legado初步支持

src/app/admin/page.tsx

@@ -12217,6 +12217,8 @@ const OPDSConfigComponent = ({
   const [cacheTTL, setCacheTTL] = useState(10 * 60 * 1000);
   const [sources, setSources] = useState<BookSource[]>([]);
   const [editingIndex, setEditingIndex] = useState<number | null>(null);
+  const [legadoImportText, setLegadoImportText] = useState('');
+  const [legadoRuleDrafts, setLegadoRuleDrafts] = useState<Record<number, string>>({});
 
   useEffect(() => {
     if (config?.OPDSConfig) {
@@ -12226,6 +12228,7 @@ const OPDSConfigComponent = ({
         (config.OPDSConfig.Sources || []).map((item, index) => ({
           id: item.id || `source_${index + 1}`,
           name: item.name || `书源 ${index + 1}`,
+          type: item.type || 'opds',
           url: item.url || '',
           enabled: item.enabled !== false,
           authMode: item.authMode || 'none',
@@ -12236,9 +12239,11 @@ const OPDSConfigComponent = ({
           searchTemplate: item.searchTemplate || '',
           preferFormat: item.preferFormat || ['epub', 'pdf'],
           language: item.language || '',
+          legado: item.legado,
         }))
       );
       setEditingIndex(null);
+      setLegadoRuleDrafts({});
     }
   }, [config]);
 
@@ -12264,6 +12269,7 @@ const OPDSConfigComponent = ({
         {
           id: `source_${prev.length + 1}`,
           name: `书源 ${prev.length + 1}`,
+          type: 'opds',
           url: '',
           enabled: true,
           authMode: 'none',
@@ -12274,13 +12280,76 @@ const OPDSConfigComponent = ({
           searchTemplate: '',
           preferFormat: ['epub', 'pdf'],
           language: '',
+          legado: undefined,
         },
       ];
     });
   };
 
+  const makeLegadoSourceId = (name: string, url: string, index: number) => {
+    const raw = `${name}|${url}|${index}`;
+    let hash = 0;
+    for (let i = 0; i < raw.length; i += 1) {
+      hash = ((hash << 5) - hash + raw.charCodeAt(i)) | 0;
+    }
+    return `legado_${Math.abs(hash).toString(36)}`;
+  };
+
+  const importLegadoSources = () => {
+    try {
+      const parsed = JSON.parse(legadoImportText);
+      const list = Array.isArray(parsed) ? parsed : [parsed];
+      const imported = list
+        .filter((item) => item && typeof item === 'object')
+        .map((rule: any, index) => {
+          const name = rule.bookSourceName || `Legado 书源 ${index + 1}`;
+          const url = rule.bookSourceUrl || '';
+          return {
+            id: makeLegadoSourceId(name, url, index),
+            name,
+            type: 'legado' as const,
+            url,
+            enabled: rule.enabled !== false,
+            authMode: 'none' as const,
+            username: '',
+            password: '',
+            headerName: '',
+            headerValue: '',
+            searchTemplate: '',
+            preferFormat: ['epub' as const],
+            language: '',
+            legado: rule,
+          } satisfies BookSource;
+        })
+        .filter((source) => !!source.url);
+
+      if (imported.length === 0) {
+        throw new Error('没有识别到有效 Legado 书源，请确认 JSON 内含 bookSourceUrl');
+      }
+
+      setSources((prev) => {
+        const existed = new Set(prev.map((item) => `${item.type || 'opds'}|${item.url}|${item.name}`));
+        const next = imported.filter((item) => !existed.has(`${item.type}|${item.url}|${item.name}`));
+        return [...prev, ...next];
+      });
+      setLegadoImportText('');
+      showSuccess(`已导入 ${imported.length} 个 Legado 书源`, showAlert);
+    } catch (error) {
+      showError(error instanceof Error ? error.message : 'Legado JSON 解析失败', showAlert);
+    }
+  };
+
   const removeSource = (index: number) => {
     setSources((prev) => prev.filter((_, idx) => idx !== index));
+    setLegadoRuleDrafts((prev) => {
+      const next: Record<number, string> = {};
+      Object.entries(prev).forEach(([key, value]) => {
+        const numericKey = Number(key);
+        if (numericKey < index) next[numericKey] = value;
+        if (numericKey > index) next[numericKey - 1] = value;
+      });
+      return next;
+    });
     setEditingIndex((prev) => {
       if (prev === null) return prev;
       if (prev === index) return null;
@@ -12291,6 +12360,7 @@ const OPDSConfigComponent = ({
   const normalizeSource = (source: BookSource, index: number) => ({
     id: source.id?.trim() || `source_${index + 1}`,
     name: source.name?.trim() || `书源 ${index + 1}`,
+    type: source.type || 'opds',
     url: source.url?.trim() || '',
     enabled: source.enabled !== false,
     authMode: source.authMode || 'none',
@@ -12299,13 +12369,28 @@ const OPDSConfigComponent = ({
     headerName:
       source.authMode === 'header' ? source.headerName?.trim() || '' : '',
     headerValue: source.authMode === 'header' ? source.headerValue || '' : '',
-    searchTemplate: source.searchTemplate?.trim() || '',
+    searchTemplate: source.type === 'legado' ? '' : source.searchTemplate?.trim() || '',
     preferFormat: source.preferFormat?.length
       ? source.preferFormat
       : ['epub', 'pdf'],
     language: source.language?.trim() || '',
+    legado: source.type === 'legado' ? source.legado : undefined,
   });
 
+  const updateLegadoRuleJson = (index: number, value: string) => {
+    setLegadoRuleDrafts((prev) => ({ ...prev, [index]: value }));
+    try {
+      const rule = JSON.parse(value);
+      updateSource(index, {
+        legado: rule,
+        name: rule.bookSourceName || sources[index]?.name,
+        url: rule.bookSourceUrl || sources[index]?.url,
+      });
+    } catch {
+      // 允许用户继续编辑尚未完成的 JSON，保存前需修正为合法 JSON
+    }
+  };
+
   const buildConfig = () => ({
     Enabled: enabled,
     CacheTTL: Math.max(60_000, cacheTTL || 10 * 60 * 1000),
@@ -12316,6 +12401,14 @@ const OPDSConfigComponent = ({
     await withLoading('saveOPDSConfig', async () => {
       try {
         if (!config) throw new Error('配置未加载');
+        for (const [index, draft] of Object.entries(legadoRuleDrafts)) {
+          if (!draft.trim()) continue;
+          try {
+            JSON.parse(draft);
+          } catch {
+            throw new Error(`第 ${Number(index) + 1} 个 Legado 书源 JSON 格式不正确`);
+          }
+        }
         const response = await fetch('/api/admin/config', {
           method: 'POST',
           headers: { 'Content-Type': 'application/json' },
@@ -12385,10 +12478,10 @@ const OPDSConfigComponent = ({
     <div className='space-y-6'>
       <div className='bg-amber-50 dark:bg-amber-900/20 border border-amber-200 dark:border-amber-800 rounded-lg p-4'>
         <h3 className='text-sm font-medium text-amber-900 dark:text-amber-100 mb-2'>
-          关于电子书馆 / OPDS
+          关于电子书馆 / OPDS / Legado
         </h3>
         <div className='text-sm text-amber-800 dark:text-amber-200 space-y-1'>
-          <p>• 支持多书源，每个源可独立配置认证、搜索模板与默认格式偏好。</p>
+          <p>• 支持多书源，每个源可选择 OPDS 或 Legado，并独立配置规则。</p>
           <p>
             • 有些源只支持分类浏览，有些源只支持搜索，测试连接会自动探测能力。
           </p>
@@ -12449,6 +12542,34 @@ const OPDSConfigComponent = ({
           </button>
         </div>
 
+        <div className='rounded-xl border border-amber-200 bg-amber-50 p-4 dark:border-amber-800 dark:bg-amber-900/20'>
+          <div className='mb-2 flex items-center justify-between gap-3'>
+            <div>
+              <h4 className='text-sm font-medium text-amber-900 dark:text-amber-100'>
+                导入 Legado 书源
+              </h4>
+              <p className='mt-1 text-xs text-amber-800 dark:text-amber-200'>
+                粘贴阅读/Legado 导出的单个书源 JSON 或书源数组，导入后可逐个测试。
+              </p>
+            </div>
+            <button
+              type='button'
+              onClick={importLegadoSources}
+              disabled={!legadoImportText.trim()}
+              className={buttonStyles.primarySmall}
+            >
+              导入 Legado
+            </button>
+          </div>
+          <textarea
+            value={legadoImportText}
+            onChange={(e) => setLegadoImportText(e.target.value)}
+            placeholder='[{ "bookSourceName": "...", "bookSourceUrl": "...", "searchUrl": "...", "ruleSearch": { ... } }]'
+            rows={5}
+            className='w-full rounded-lg border border-amber-200 bg-white px-3 py-2 font-mono text-xs text-gray-900 dark:border-amber-800 dark:bg-gray-900 dark:text-gray-100'
+          />
+        </div>
+
         {sources.length === 0 && (
           <div className='rounded-lg border border-dashed border-gray-300 dark:border-gray-600 p-4 text-sm text-gray-500 dark:text-gray-400'>
             暂无 OPDS 书源，点击“添加书源”开始配置。
@@ -12499,6 +12620,14 @@ const OPDSConfigComponent = ({
                       </div>
 
                       <div className='space-y-2 text-xs text-gray-600 dark:text-gray-300'>
+                        <div className='flex items-start justify-between gap-3'>
+                          <span className='shrink-0 text-gray-500 dark:text-gray-400'>
+                            类型
+                          </span>
+                          <span className='min-w-0 text-right'>
+                            {source.type === 'legado' ? 'Legado' : 'OPDS'}
+                          </span>
+                        </div>
                         <div className='flex items-start justify-between gap-3'>
                           <span className='shrink-0 text-gray-500 dark:text-gray-400'>
                             地址
@@ -12524,7 +12653,11 @@ const OPDSConfigComponent = ({
                             搜索
                           </span>
                           <span>
-                            {source.searchTemplate?.trim()
+                            {source.type === 'legado'
+                              ? source.legado?.searchUrl
+                                ? '已配置'
+                                : '未配置'
+                              : source.searchTemplate?.trim()
                               ? '已配置'
                               : '未配置'}
                           </span>
@@ -12585,6 +12718,27 @@ const OPDSConfigComponent = ({
                         </div>
 
                         <div className='grid grid-cols-1 gap-4'>
+                          <div>
+                            <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
+                              书源类型
+                            </label>
+                            <select
+                              value={source.type || 'opds'}
+                              onChange={(e) => {
+                                const nextType = e.target.value as BookSource['type'];
+                                updateSource(index, {
+                                  type: nextType,
+                                  legado: nextType === 'legado'
+                                    ? source.legado || { bookSourceName: source.name, bookSourceUrl: source.url }
+                                    : undefined,
+                                });
+                              }}
+                              className='w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-gray-900 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100'
+                            >
+                              <option value='opds'>OPDS</option>
+                              <option value='legado'>Legado</option>
+                            </select>
+                          </div>
                           <div>
                             <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
                               书源 ID
@@ -12620,14 +12774,35 @@ const OPDSConfigComponent = ({
                           <input
                             type='text'
                             value={source.url}
-                            onChange={(e) =>
+                            onChange={(e) => {
-                              updateSource(index, { url: e.target.value })
+                              const url = e.target.value;
-                            }
+                              updateSource(index, {
-                            placeholder='https://example.com/opds'
+                                url,
+                                legado: source.type === 'legado' ? { ...(source.legado || {}), bookSourceUrl: url } : source.legado,
+                              });
+                            }}
+                            placeholder={source.type === 'legado' ? 'https://example.com' : 'https://example.com/opds'}
                             className='w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-gray-900 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100'
                           />
                         </div>
 
+                        {source.type === 'legado' ? (
+                          <div>
+                            <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
+                              Legado 原始 JSON
+                            </label>
+                            <textarea
+                              value={legadoRuleDrafts[index] ?? JSON.stringify(source.legado || {}, null, 2)}
+                              onChange={(e) => updateLegadoRuleJson(index, e.target.value)}
+                              rows={10}
+                              className='w-full rounded-lg border border-gray-300 bg-white px-3 py-2 font-mono text-xs text-gray-900 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100'
+                            />
+                            <p className='mt-1 text-xs text-gray-500 dark:text-gray-400'>
+                              修改后请保持合法 JSON；测试会检查搜索/章节规则是否存在。
+                            </p>
+                          </div>
+                        ) : (
+                        <>
                         <div className='grid grid-cols-1 gap-4'>
                           <div>
                             <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
@@ -12751,6 +12926,8 @@ const OPDSConfigComponent = ({
                             </div>
                           </div>
                         )}
+                        </>
+                        )}
                       </div>
                     )}
                   </div>
@@ -12823,7 +13000,7 @@ const OPDSConfigComponent = ({
                                 {source.name || `书源 ${index + 1}`}
                               </div>
                               <div className='mt-1 text-xs text-gray-500 dark:text-gray-400'>
-                                {source.language || '未设置语言'}
+                                {source.type === 'legado' ? 'Legado' : 'OPDS'} · {source.language || '未设置语言'}
                               </div>
                             </td>
                             <td className='px-4 py-3 text-sm text-gray-600 dark:text-gray-300'>
@@ -12845,7 +13022,11 @@ const OPDSConfigComponent = ({
                                 : '自定义 Header'}
                             </td>
                             <td className='px-4 py-3 text-sm text-gray-600 dark:text-gray-300'>
-                              {source.searchTemplate?.trim()
+                              {source.type === 'legado'
+                                ? source.legado?.searchUrl
+                                  ? '已配置'
+                                  : '未配置'
+                                : source.searchTemplate?.trim()
                                 ? '已配置'
                                 : '未配置'}
                             </td>
@@ -12933,6 +13114,27 @@ const OPDSConfigComponent = ({
                                   </div>
 
                                   <div className='grid grid-cols-1 gap-4 md:grid-cols-2'>
+                                    <div>
+                                      <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
+                                        书源类型
+                                      </label>
+                                      <select
+                                        value={source.type || 'opds'}
+                                        onChange={(e) => {
+                                          const nextType = e.target.value as BookSource['type'];
+                                          updateSource(index, {
+                                            type: nextType,
+                                            legado: nextType === 'legado'
+                                              ? source.legado || { bookSourceName: source.name, bookSourceUrl: source.url }
+                                              : undefined,
+                                          });
+                                        }}
+                                        className='w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-gray-900 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100'
+                                      >
+                                        <option value='opds'>OPDS</option>
+                                        <option value='legado'>Legado</option>
+                                      </select>
+                                    </div>
                                     <div>
                                       <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
                                         书源 ID
@@ -12972,16 +13174,32 @@ const OPDSConfigComponent = ({
                                     <input
                                       type='text'
                                       value={source.url}
-                                      onChange={(e) =>
+                                      onChange={(e) => {
+                                        const url = e.target.value;
                                         updateSource(index, {
-                                          url: e.target.value,
+                                          url,
-                                        })
+                                          legado: source.type === 'legado' ? { ...(source.legado || {}), bookSourceUrl: url } : source.legado,
-                                      }
+                                        });
-                                      placeholder='https://example.com/opds'
+                                      }}
+                                      placeholder={source.type === 'legado' ? 'https://example.com' : 'https://example.com/opds'}
                                       className='w-full rounded-lg border border-gray-300 bg-white px-3 py-2 text-gray-900 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100'
                                     />
                                   </div>
 
+                                  {source.type === 'legado' ? (
+                                    <div>
+                                      <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
+                                        Legado 原始 JSON
+                                      </label>
+                                      <textarea
+                                        value={legadoRuleDrafts[index] ?? JSON.stringify(source.legado || {}, null, 2)}
+                                        onChange={(e) => updateLegadoRuleJson(index, e.target.value)}
+                                        rows={12}
+                                        className='w-full rounded-lg border border-gray-300 bg-white px-3 py-2 font-mono text-xs text-gray-900 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100'
+                                      />
+                                    </div>
+                                  ) : (
+                                  <>
                                   <div className='grid grid-cols-1 gap-4 md:grid-cols-3'>
                                     <div>
                                       <label className='mb-2 block text-sm font-medium text-gray-700 dark:text-gray-300'>
@@ -13109,6 +13327,8 @@ const OPDSConfigComponent = ({
                                       </div>
                                     </div>
                                   )}
+                                  </>
+                                  )}
                                 </div>
                               </td>
                             </tr>
@@ -13130,7 +13350,7 @@ const OPDSConfigComponent = ({
           disabled={isLoading('saveOPDSConfig')}
           className={buttonStyles.success}
         >
-          {isLoading('saveOPDSConfig') ? '保存中...' : '保存 OPDS 配置'}
+          {isLoading('saveOPDSConfig') ? '保存中...' : '保存电子书源配置'}
         </button>
       </div>
 

src/app/api/admin/opds/route.ts

@@ -3,6 +3,7 @@ import { NextRequest, NextResponse } from 'next/server';
 import { getAuthInfoFromCookie } from '@/lib/auth';
 import { BookSource, BookSourceCapabilities } from '@/lib/book.types';
 import { db } from '@/lib/db';
+import { legadoClient } from '@/lib/legado.client';
 import { opdsClient } from '@/lib/opds.client';
 
 export const runtime = 'nodejs';
@@ -10,6 +11,7 @@ export const runtime = 'nodejs';
 interface TestSourceInput {
   id?: string;
   name?: string;
+  type?: 'opds' | 'legado';
   url?: string;
   enabled?: boolean;
   authMode?: 'none' | 'basic' | 'header';
@@ -20,6 +22,7 @@ interface TestSourceInput {
   searchTemplate?: string;
   preferFormat?: Array<'epub' | 'pdf'>;
   language?: string;
+  legado?: BookSource['legado'];
 }
 
 async function ensureAdmin(request: NextRequest) {
@@ -39,6 +42,7 @@ async function ensureAdmin(request: NextRequest) {
 }
 
 async function detectCapabilitiesFromSource(source: BookSource): Promise<BookSourceCapabilities> {
+  if (source.type === 'legado') return legadoClient.detectCapabilitiesFromSource(source);
   try {
     const result = await opdsClient.getCatalogFromSource(source);
     return {
@@ -70,7 +74,7 @@ export async function POST(request: NextRequest) {
     const body = await request.json();
     const inputSources = (body?.Sources || []) as TestSourceInput[];
     if (!Array.isArray(inputSources) || inputSources.length === 0) {
-      return NextResponse.json({ success: false, message: '请至少填写一个 OPDS 书源' }, { status: 400 });
+      return NextResponse.json({ success: false, message: '请至少填写一个电子书源' }, { status: 400 });
     }
 
     const sources: BookSource[] = inputSources
@@ -78,6 +82,7 @@ export async function POST(request: NextRequest) {
       .map((item, index) => ({
         id: item.id?.trim() || `source_${index + 1}`,
         name: item.name?.trim() || `书源 ${index + 1}`,
+        type: item.type || 'opds',
         url: (item.url || '').trim(),
         enabled: item.enabled !== false,
         authMode: item.authMode || 'none',
@@ -88,6 +93,7 @@ export async function POST(request: NextRequest) {
         searchTemplate: item.searchTemplate?.trim() || '',
         preferFormat: item.preferFormat || ['epub', 'pdf'],
         language: item.language?.trim() || '',
+        legado: item.legado,
       }));
 
     if (sources.length === 0) {

src/app/api/books/catalog/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from 'next/server';
 
-import { opdsClient } from '@/lib/opds.client';
+import { bookProvider } from '@/lib/book-provider';
 
 import { getAuthorizedBooksUsername } from '../_utils';
 
@@ -17,7 +17,7 @@ export async function GET(request: NextRequest) {
     if (!sourceId) {
       return NextResponse.json({ error: '缺少 sourceId' }, { status: 400 });
     }
-    const result = await opdsClient.getCatalog(sourceId, href);
+    const result = await bookProvider.getCatalog(sourceId, href);
     return NextResponse.json(result);
   } catch (error) {
     return NextResponse.json({ error: (error as Error).message }, { status: 500 });

src/app/api/books/detail/route.ts

@@ -2,7 +2,7 @@ import { NextRequest, NextResponse } from 'next/server';
 
 import { BookAcquisitionLink } from '@/lib/book.types';
 import { db } from '@/lib/db';
-import { opdsClient } from '@/lib/opds.client';
+import { bookProvider } from '@/lib/book-provider';
 
 import { getAuthorizedBooksUsername } from '../_utils';
 
@@ -49,7 +49,7 @@ async function resolveDetail(username: string, payload: DetailPayload) {
           }]
         : undefined;
 
-  const detail = await opdsClient.getBookDetail(sourceId, href, {
+  const detail = await bookProvider.getBookDetail(sourceId, href, {
     id: bookId,
     title: payload.title || shelfItem?.title || readRecord?.title || undefined,
     author: payload.author || shelfItem?.author || readRecord?.author || undefined,

src/app/api/books/file/route.ts

@@ -1,7 +1,7 @@
 import { NextRequest, NextResponse } from 'next/server';
 
 import { db } from '@/lib/db';
-import { opdsClient } from '@/lib/opds.client';
+import { bookProvider } from '@/lib/book-provider';
 
 import { getAuthorizedBooksUsername } from '../_utils';
 
@@ -11,12 +11,13 @@ type FilePayload = {
   sourceId?: string;
   bookId?: string;
   href?: string;
-  format?: 'epub' | 'pdf' | null;
+  format?: 'epub' | 'pdf' | 'chapters' | null;
 };
 
 async function resolveFileHref(username: string, payload: FilePayload): Promise<{ sourceId: string; href: string }> {
   const sourceId = payload.sourceId?.trim();
   if (!sourceId) throw new Error('缺少 sourceId');
+  if (payload.format === 'chapters') throw new Error('章节型书源不提供文件下载');
 
   if (payload.href?.trim()) {
     return { sourceId, href: payload.href.trim() };
@@ -35,9 +36,10 @@ async function resolveFileHref(username: string, payload: FilePayload): Promise<
   const detailHref = shelfItem?.detailHref || readRecord?.detailHref;
   if (!detailHref) throw new Error('找不到可下载文件');
 
-  const preferred = await opdsClient.getPreferredAcquisition(sourceId, detailHref);
+  const preferred = await bookProvider.getPreferredAcquisition(sourceId, detailHref);
+  if (preferred.format === 'chapters') throw new Error('章节型书源不提供文件下载');
   if (payload.format && preferred.format !== payload.format) {
-    const detail = await opdsClient.getBookDetail(sourceId, detailHref);
+    const detail = await bookProvider.getBookDetail(sourceId, detailHref);
     const matched = detail.acquisitionLinks.find((item) => (payload.format === 'pdf' ? item.type.toLowerCase().includes('pdf') : item.type.toLowerCase().includes('epub')));
     if (!matched?.href) throw new Error('找不到对应格式文件');
     return { sourceId, href: matched.href };
@@ -47,7 +49,7 @@ async function resolveFileHref(username: string, payload: FilePayload): Promise<
 }
 
 async function proxyFile(request: NextRequest, sourceId: string, href: string) {
-  const source = await opdsClient.getSourceById(sourceId);
+  const source = await bookProvider.getSourceById(sourceId);
   const headers = new Headers();
   if (source.authMode === 'basic' && source.username) {
     headers.set('Authorization', `Basic ${Buffer.from(`${source.username}:${source.password || ''}`).toString('base64')}`);
@@ -98,7 +100,7 @@ export async function GET(request: NextRequest) {
       sourceId: searchParams.get('sourceId') || undefined,
       bookId: searchParams.get('bookId') || undefined,
       href: searchParams.get('href') || undefined,
-      format: (searchParams.get('format')?.trim() as 'epub' | 'pdf' | null) || null,
+      format: (searchParams.get('format')?.trim() as 'epub' | 'pdf' | 'chapters' | null) || null,
     });
     return await proxyFile(request, resolved.sourceId, resolved.href);
   } catch (error) {

src/app/api/books/read/chapter/route.ts

@@ -0,0 +1,24 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+import { legadoClient } from '@/lib/legado.client';
+
+import { getAuthorizedBooksUsername } from '../../_utils';
+
+export const runtime = 'nodejs';
+
+export async function GET(request: NextRequest) {
+  const username = await getAuthorizedBooksUsername(request);
+  if (username instanceof NextResponse) return username;
+
+  try {
+    const { searchParams } = new URL(request.url);
+    const sourceId = searchParams.get('sourceId')?.trim();
+    const href = searchParams.get('href')?.trim();
+    const tocHref = searchParams.get('tocHref')?.trim() || undefined;
+    if (!sourceId || !href) return NextResponse.json({ error: '缺少 sourceId 或 href' }, { status: 400 });
+    const chapter = await legadoClient.getChapterContent(sourceId, href, tocHref);
+    return NextResponse.json(chapter);
+  } catch (error) {
+    return NextResponse.json({ error: (error as Error).message }, { status: 500 });
+  }
+}

src/app/api/books/read/chapters/route.ts

@@ -0,0 +1,31 @@
+import { NextRequest, NextResponse } from 'next/server';
+
+import { legadoClient } from '@/lib/legado.client';
+
+import { getAuthorizedBooksUsername } from '../../_utils';
+
+export const runtime = 'nodejs';
+
+export async function GET(request: NextRequest) {
+  const username = await getAuthorizedBooksUsername(request);
+  if (username instanceof NextResponse) return username;
+
+  try {
+    const { searchParams } = new URL(request.url);
+    const sourceId = searchParams.get('sourceId')?.trim();
+    const bookId = searchParams.get('bookId')?.trim();
+    const href = searchParams.get('href')?.trim() || '';
+
+    if (!sourceId) return NextResponse.json({ error: '缺少 sourceId' }, { status: 400 });
+
+    const chapters = bookId
+      ? await legadoClient.getChaptersByBookId(sourceId, bookId)
+      : href
+        ? await legadoClient.getChapters(sourceId, href)
+        : null;
+    if (!chapters) return NextResponse.json({ error: '缺少 bookId 或 href，无法定位章节目录' }, { status: 400 });
+    return NextResponse.json({ chapters }, { headers: { 'Cache-Control': 'no-store' } });
+  } catch (error) {
+    return NextResponse.json({ error: (error as Error).message }, { status: 500 });
+  }
+}

src/app/api/books/read/manifest/route.ts

@@ -2,7 +2,7 @@ import { NextRequest, NextResponse } from 'next/server';
 
 import { BookAcquisitionLink } from '@/lib/book.types';
 import { db } from '@/lib/db';
-import { opdsClient } from '@/lib/opds.client';
+import { bookProvider } from '@/lib/book-provider';
 
 import { getAuthorizedBooksUsername } from '../../_utils';
 
@@ -13,7 +13,7 @@ type ManifestPayload = {
   bookId?: string;
   href?: string;
   acquisitionHref?: string;
-  format?: 'epub' | 'pdf' | null;
+  format?: 'epub' | 'pdf' | 'chapters' | null;
   title?: string;
   author?: string;
   cover?: string;
@@ -45,12 +45,12 @@ async function resolveManifest(username: string, payload: ManifestPayload) {
     const fallbackAcquisitionLinks: BookAcquisitionLink[] = resolvedAcquisitionHref
       ? [{
           rel: 'http://opds-spec.org/acquisition',
-          type: resolvedFormat === 'pdf' ? 'application/pdf' : 'application/epub+zip',
+          type: resolvedFormat === 'chapters' ? 'application/x-legado-chapters+json' : resolvedFormat === 'pdf' ? 'application/pdf' : 'application/epub+zip',
           href: resolvedAcquisitionHref,
         }]
       : [];
 
-    const detail = await opdsClient.getBookDetail(sourceId, resolvedHref || '', {
+    const detail = await bookProvider.getBookDetail(sourceId, resolvedHref || '', {
       id: bookId || resolvedAcquisitionHref || undefined,
       title: payload.title || existingRecord?.title || shelfItem?.title || undefined,
       author: payload.author || existingRecord?.author || shelfItem?.author || undefined,
@@ -60,9 +60,9 @@ async function resolveManifest(username: string, payload: ManifestPayload) {
       acquisitionLinks: fallbackAcquisitionLinks,
     });
     const preferred = resolvedHref
-      ? await opdsClient.getPreferredAcquisition(sourceId, resolvedHref)
+      ? await bookProvider.getPreferredAcquisition(sourceId, resolvedHref)
       : {
-          format: resolvedFormat === 'pdf' ? 'pdf' : 'epub',
+          format: resolvedFormat === 'chapters' ? 'chapters' : resolvedFormat === 'pdf' ? 'pdf' : 'epub',
           href: resolvedAcquisitionHref || '',
         };
     const lastRecord = await db.getBookReadRecord(username, sourceId, detail.id);
@@ -70,7 +70,8 @@ async function resolveManifest(username: string, payload: ManifestPayload) {
     return NextResponse.json({
       book: detail,
       format: preferred.format,
-      fileUrl: `/api/books/file?sourceId=${encodeURIComponent(sourceId)}&bookId=${encodeURIComponent(detail.id)}&format=${encodeURIComponent(preferred.format)}`,
+      fileUrl: preferred.format === 'chapters' ? undefined : `/api/books/file?sourceId=${encodeURIComponent(sourceId)}&bookId=${encodeURIComponent(detail.id)}&format=${encodeURIComponent(preferred.format)}`,
+      chaptersUrl: preferred.format === 'chapters' ? `/api/books/read/chapters?sourceId=${encodeURIComponent(sourceId)}&bookId=${encodeURIComponent(detail.id)}` : undefined,
       acquisitionHref: preferred.href,
       cacheKey: `${sourceId}::${detail.id}::${preferred.format}`,
       coverUrl: detail.cover,

src/app/api/books/search/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from 'next/server';
 
-import { opdsClient } from '@/lib/opds.client';
+import { bookProvider } from '@/lib/book-provider';
 
 import { getAuthorizedBooksUsername } from '../_utils';
 
@@ -17,7 +17,7 @@ export async function GET(request: NextRequest) {
     if (!q) {
       return NextResponse.json({ results: [], failedSources: [] });
     }
-    const result = await opdsClient.searchBooks(q, sourceId);
+    const result = await bookProvider.searchBooks(q, sourceId);
     return NextResponse.json(result);
   } catch (error) {
     return NextResponse.json({ error: (error as Error).message }, { status: 500 });

src/app/api/books/search/ws/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from 'next/server';
 
-import { opdsClient } from '@/lib/opds.client';
+import { bookProvider } from '@/lib/book-provider';
 
 import { getAuthorizedBooksUsername } from '../../_utils';
 
@@ -37,7 +37,7 @@ export async function GET(request: NextRequest) {
       };
 
       try {
-        const sources = await opdsClient.getSearchSources(sourceId);
+        const sources = await bookProvider.getSearchSources(sourceId);
         let completedSources = 0;
         let totalResults = 0;
         const failedSources: Array<{ sourceId: string; sourceName: string; error: string }> = [];
@@ -47,7 +47,7 @@ export async function GET(request: NextRequest) {
         await Promise.all(
           sources.map(async (source) => {
             try {
-              const result = await opdsClient.searchBooksSource(q, source);
+              const result = await bookProvider.searchBooksSource(q, source);
               completedSources += 1;
               totalResults += result.results.length;
               send({

src/app/api/books/sources/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from 'next/server';
 
-import { opdsClient } from '@/lib/opds.client';
+import { bookProvider } from '@/lib/book-provider';
 
 import { getAuthorizedBooksUsername } from '../_utils';
 
@@ -11,7 +11,7 @@ export async function GET(request: NextRequest) {
   if (username instanceof NextResponse) return username;
 
   try {
-    const sources = await opdsClient.getSources();
+    const sources = await bookProvider.getSources();
     return NextResponse.json({ sources });
   } catch (error) {
     return NextResponse.json({ error: (error as Error).message }, { status: 500 });

src/app/books/detail/page.tsx

@@ -6,7 +6,7 @@ import { useEffect, useMemo, useState } from 'react';
 
 import { buildBookReadPath, cacheBookDetail, getBookRouteCache } from '@/lib/book-route-cache.client';
 import { deleteBookShelf, getAllBookShelf, saveBookShelf } from '@/lib/book.db.client';
-import { BookDetail, BookShelfItem } from '@/lib/book.types';
+import { BookChapter, BookDetail, BookShelfItem } from '@/lib/book.types';
 
 function DetailSkeleton() {
   return (
@@ -47,7 +47,7 @@ function sanitizeFilename(name: string) {
   return name.replace(/[\/:*?"<>|]/g, '_').trim();
 }
 
-async function openBookFile(sourceId: string, bookId: string, format?: 'epub' | 'pdf', download = false, href?: string, title?: string) {
+async function openBookFile(sourceId: string, bookId: string, format?: 'epub' | 'pdf' | 'chapters', download = false, href?: string, title?: string) {
   const response = await fetch('/api/books/file', {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
@@ -86,6 +86,9 @@ export default function BookDetailPage() {
   const bookId = searchParams.get('bookId') || '';
   const [detail, setDetail] = useState<BookDetail | null>(null);
   const [shelf, setShelf] = useState<Record<string, BookShelfItem>>({});
+  const [chapters, setChapters] = useState<BookChapter[]>([]);
+  const [chaptersLoading, setChaptersLoading] = useState(false);
+  const [chaptersError, setChaptersError] = useState('');
   const [error, setError] = useState('');
   const [fileBusy, setFileBusy] = useState<'open' | 'download' | ''>('');
 
@@ -122,8 +125,50 @@ export default function BookDetailPage() {
       .catch((err) => setError(err.message || '获取详情失败'));
   }, [sourceId, bookId, cached]);
 
-  const readable = detail?.acquisitionLinks.find((item) => item.type.toLowerCase().includes('epub') || item.type.toLowerCase().includes('pdf'));
+  const readable = detail?.acquisitionLinks.find((item) => {
-  const readableFormat = readable?.type.toLowerCase().includes('pdf') ? 'pdf' : 'epub';
+    const type = item.type.toLowerCase();
+    return type.includes('epub') || type.includes('pdf') || type.includes('legado-chapters') || item.rel === 'legado:chapters';
+  });
+  const readableFormat = readable?.type.toLowerCase().includes('pdf')
+    ? 'pdf'
+    : readable?.type.toLowerCase().includes('legado-chapters') || readable?.rel === 'legado:chapters'
+      ? 'chapters'
+      : 'epub';
+
+  useEffect(() => {
+    if (!detail || !readable || readableFormat !== 'chapters') {
+      setChapters([]);
+      setChaptersError('');
+      setChaptersLoading(false);
+      return;
+    }
+    let cancelled = false;
+    setChapters([]);
+    setChaptersLoading(true);
+    setChaptersError('');
+    const params = new URLSearchParams({
+      sourceId: detail.sourceId,
+      bookId: detail.id,
+    });
+    fetch(`/api/books/read/chapters?${params.toString()}`, { cache: 'no-store' })
+      .then(async (res) => {
+        const json = await res.json();
+        if (!res.ok) throw new Error(json.error || '获取章节失败');
+        if (cancelled) return;
+        setChapters((json.chapters || []) as BookChapter[]);
+      })
+      .catch((err) => {
+        if (cancelled) return;
+        setChapters([]);
+        setChaptersError(err.message || '获取章节失败');
+      })
+      .finally(() => {
+        if (!cancelled) setChaptersLoading(false);
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [detail, readable, readableFormat]);
 
   const toggleShelf = async () => {
     if (!detail) return;
@@ -176,7 +221,7 @@ export default function BookDetailPage() {
           <div className='flex flex-wrap gap-3'>
             {readable ? <Link href={buildBookReadPath(detail.sourceId, detail.id)} onClick={() => cacheBookDetail(detail)} className='rounded-2xl bg-sky-600 px-4 py-2 text-sm text-white'>在线阅读</Link> : null}
             <button onClick={toggleShelf} className='rounded-2xl border border-gray-200 px-4 py-2 text-sm dark:border-gray-700'>{shelf[`${detail.sourceId}+${detail.id}`] ? '移出书架' : '加入书架'}</button>
-            {readable ? <button onClick={async () => { try { setFileBusy('download'); await openBookFile(detail.sourceId, detail.id, readableFormat, true, readable?.href, detail.title); } catch (err) { setError((err as Error).message || '下载文件失败'); } finally { setFileBusy(''); } }} disabled={fileBusy !== ''} className='rounded-2xl border border-gray-200 px-4 py-2 text-sm dark:border-gray-700'>{fileBusy === 'download' ? '下载中...' : '下载文件'}</button> : null}
+            {readable && readableFormat !== 'chapters' ? <button onClick={async () => { try { setFileBusy('download'); await openBookFile(detail.sourceId, detail.id, readableFormat, true, readable?.href, detail.title); } catch (err) { setError((err as Error).message || '下载文件失败'); } finally { setFileBusy(''); } }} disabled={fileBusy !== ''} className='rounded-2xl border border-gray-200 px-4 py-2 text-sm dark:border-gray-700'>{fileBusy === 'download' ? '下载中...' : '下载文件'}</button> : null}
           </div>
         </div>
       </section>
@@ -184,7 +229,8 @@ export default function BookDetailPage() {
         <h2 className='text-lg font-semibold'>可用格式</h2>
         <div className='mt-4 space-y-3'>
           {detail.acquisitionLinks.map((item) => {
-            const format = item.type.toLowerCase().includes('pdf') ? 'pdf' : item.type.toLowerCase().includes('epub') ? 'epub' : undefined;
+            const type = item.type.toLowerCase();
+            const format = type.includes('pdf') ? 'pdf' : type.includes('epub') ? 'epub' : type.includes('legado-chapters') || item.rel === 'legado:chapters' ? 'chapters' : undefined;
             return (
               <div key={`${item.href}-${item.type}`} className='flex items-center justify-between rounded-2xl bg-gray-50 px-4 py-3 text-sm dark:bg-gray-900'>
                 <div>
@@ -193,7 +239,7 @@ export default function BookDetailPage() {
                 </div>
                 <button disabled={!format || fileBusy !== ''} onClick={async () => {
                   if (!format) return;
-                  if (format === 'epub') {
+                  if (format === 'epub' || format === 'chapters') {
                     cacheBookDetail(detail);
                     window.location.href = buildBookReadPath(detail.sourceId, detail.id);
                     return;
@@ -212,6 +258,36 @@ export default function BookDetailPage() {
           })}
         </div>
       </section>
+      {readableFormat === 'chapters' ? (
+        <section className='rounded-3xl border border-gray-200 bg-white p-5 shadow-sm dark:border-gray-800 dark:bg-gray-950'>
+          <div className='flex items-center justify-between gap-3'>
+            <h2 className='text-lg font-semibold'>章节目录</h2>
+            <div className='text-sm text-gray-500'>{chaptersLoading ? '加载中...' : `${chapters.length} 章`}</div>
+          </div>
+          {chaptersError ? <div className='mt-4 text-sm text-red-500'>{chaptersError}</div> : null}
+          {!chaptersLoading && !chaptersError && chapters.length === 0 ? (
+            <div className='mt-4 rounded-2xl bg-amber-50 px-4 py-3 text-sm text-amber-800 dark:bg-amber-900/20 dark:text-amber-200'>
+              源站当前没有返回章节，这不是 EPUB 文件缺失；请换有章节的搜索结果。
+            </div>
+          ) : null}
+          {chapters.length > 0 ? (
+            <div className='mt-4 grid gap-2 sm:grid-cols-2 lg:grid-cols-3'>
+              {chapters.slice(0, 60).map((chapter) => (
+                <Link
+                  key={`${chapter.href}-${chapter.order}`}
+                  href={buildBookReadPath(detail.sourceId, detail.id, chapter.href)}
+                  onClick={() => cacheBookDetail(detail)}
+                  className='truncate rounded-2xl bg-gray-50 px-4 py-3 text-sm hover:bg-sky-50 hover:text-sky-600 dark:bg-gray-900 dark:hover:bg-sky-950/40'
+                  title={chapter.title}
+                >
+                  {chapter.title}
+                </Link>
+              ))}
+            </div>
+          ) : null}
+          {chapters.length > 60 ? <div className='mt-3 text-xs text-gray-500'>仅预览前 60 章，完整目录请进入阅读页侧边栏查看。</div> : null}
+        </section>
+      ) : null}
     </div>
   );
 }

src/app/books/page.tsx

@@ -45,8 +45,8 @@ export default function BooksHomePage() {
   return (
     <div className='space-y-6'>
       <section className='rounded-3xl border border-gray-200 bg-white p-5 shadow-sm dark:border-gray-800 dark:bg-gray-950'>
-        <h1 className='text-lg font-semibold'>OPDS 电子书源</h1>
+        <h1 className='text-lg font-semibold'>电子书源</h1>
-        <p className='mt-1 text-sm text-gray-500 dark:text-gray-400'>支持分类浏览、搜索、书架与 EPUB 在线阅读。</p>
+        <p className='mt-1 text-sm text-gray-500 dark:text-gray-400'>支持 OPDS 与 Legado 书源，提供搜索、书架与在线阅读。</p>
       </section>
 
       {loading ? <BooksHomeSkeleton /> : null}
@@ -56,6 +56,7 @@ export default function BooksHomePage() {
         {sources.map((source) => (
           <div key={source.id} className='rounded-3xl border border-gray-200 bg-white p-5 shadow-sm dark:border-gray-800 dark:bg-gray-950'>
             <div className='text-base font-semibold'>{source.name}</div>
+            <div className='mt-1 text-xs text-gray-400'>{source.type === 'legado' ? 'Legado' : 'OPDS'}</div>
             <div className='mt-2 flex flex-wrap gap-2 text-xs'>
               <span className={`rounded-full px-2 py-1 ${source.capabilities?.catalogSupported ? 'bg-sky-100 text-sky-700 dark:bg-sky-950/50 dark:text-sky-300' : 'bg-gray-100 text-gray-500 dark:bg-gray-900 dark:text-gray-400'}`}>分类{source.capabilities?.catalogSupported ? '可用' : '不可用'}</span>
               <span className={`rounded-full px-2 py-1 ${source.capabilities?.searchSupported ? 'bg-emerald-100 text-emerald-700 dark:bg-emerald-950/50 dark:text-emerald-300' : 'bg-gray-100 text-gray-500 dark:bg-gray-900 dark:text-gray-400'}`}>搜索{source.capabilities?.searchSupported ? '可用' : '不可用'}</span>

src/app/books/read/page.tsx

@@ -6,7 +6,7 @@ import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { createPortal } from 'react-dom';
 
 import { saveBookReadRecord } from '@/lib/book.db.client';
-import { BookReadManifest, BookReadRecord, BookTtsProgress, BookTtsVoice } from '@/lib/book.types';
+import { BookChapter, BookChapterContent, BookReadManifest, BookReadRecord, BookTtsProgress, BookTtsVoice } from '@/lib/book.types';
 import {
   buildBookCacheKey,
   enforceBookCacheLimit,
@@ -370,6 +370,153 @@ async function downloadBookWithProgress(
   return new Blob(chunks, { type: response.headers.get('content-type') || 'application/epub+zip' });
 }
 
+function ChapterReader({ manifest }: { manifest: BookReadManifest }) {
+  const searchParams = useSearchParams();
+  const initialChapterHref = searchParams.get('chapterHref') || '';
+  const [chapters, setChapters] = useState<BookChapter[]>([]);
+  const [currentIndex, setCurrentIndex] = useState(0);
+  const [chapter, setChapter] = useState<BookChapterContent | null>(null);
+  const [tocOpen, setTocOpen] = useState(false);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState('');
+
+  useEffect(() => {
+    const handleToggleChapters = () => setTocOpen((prev) => !prev);
+    window.addEventListener('books-read-toggle-chapters', handleToggleChapters);
+    return () => window.removeEventListener('books-read-toggle-chapters', handleToggleChapters);
+  }, []);
+
+  useEffect(() => {
+    if (!manifest.chaptersUrl && !manifest.acquisitionHref) return;
+    let cancelled = false;
+    setChapters([]);
+    setChapter(null);
+    setCurrentIndex(0);
+    setLoading(true);
+    setError('');
+    const url = manifest.chaptersUrl || `/api/books/read/chapters?sourceId=${encodeURIComponent(manifest.book.sourceId)}&bookId=${encodeURIComponent(manifest.book.id)}`;
+    fetch(url, { cache: 'no-store' })
+      .then(async (res) => {
+        const json = await res.json();
+        if (!res.ok) throw new Error(json.error || '获取目录失败');
+        if (cancelled) return;
+        const list = (json.chapters || []) as BookChapter[];
+        setChapters(list);
+        const savedHref = initialChapterHref || manifest.lastRecord?.chapterHref || manifest.lastRecord?.locator?.href || manifest.lastRecord?.locator?.value || '';
+        const savedIndex = list.findIndex((item) => item.href === savedHref);
+        setCurrentIndex(savedIndex >= 0 ? savedIndex : 0);
+      })
+      .catch((err) => {
+        if (!cancelled) setError(err.message || '获取目录失败');
+      });
+    return () => {
+      cancelled = true;
+    };
+  }, [initialChapterHref, manifest]);
+
+  useEffect(() => {
+    const item = chapters[currentIndex];
+    if (!item) {
+      if (chapters.length === 0) setLoading(false);
+      return;
+    }
+    setLoading(true);
+    setError('');
+    const params = new URLSearchParams({
+      sourceId: manifest.book.sourceId,
+      href: item.href,
+    });
+    if (manifest.acquisitionHref) params.set('tocHref', manifest.acquisitionHref);
+    fetch(`/api/books/read/chapter?${params.toString()}`, { cache: 'no-store' })
+      .then(async (res) => {
+        const json = await res.json();
+        if (!res.ok) throw new Error(json.error || '获取章节失败');
+        setChapter({ ...(json as BookChapterContent), title: (json as BookChapterContent).title || item.title });
+        const progressPercent = chapters.length > 0 ? Math.round(((currentIndex + 1) / chapters.length) * 100) : 0;
+        const record: BookReadRecord = {
+          sourceId: manifest.book.sourceId,
+          sourceName: manifest.book.sourceName,
+          bookId: manifest.book.id,
+          title: manifest.book.title,
+          author: manifest.book.author,
+          cover: manifest.book.cover,
+          detailHref: manifest.book.detailHref,
+          acquisitionHref: manifest.acquisitionHref,
+          format: 'chapters',
+          locator: { type: 'chapter', value: item.href, href: item.href, chapterTitle: item.title },
+          chapterTitle: item.title,
+          chapterHref: item.href,
+          progressPercent,
+          saveTime: Date.now(),
+        };
+        void saveBookReadRecord(record.sourceId, record.bookId, record);
+      })
+      .catch((err) => setError(err.message || '获取章节失败'))
+      .finally(() => setLoading(false));
+  }, [chapters, currentIndex, manifest]);
+
+  if (error) return <div className='p-4 text-sm text-red-500'>{error}</div>;
+  if (loading && !chapter) return <div className='p-4 text-sm text-gray-500'>章节加载中...</div>;
+  if (!chapters.length) {
+    return (
+      <div className='mx-auto max-w-2xl p-4'>
+        <div className='rounded-2xl border border-amber-200 bg-amber-50 p-4 text-sm text-amber-800 dark:border-amber-800 dark:bg-amber-900/20 dark:text-amber-200'>
+          暂无章节。该 Legado 源返回的是章节/图片接口，不是 EPUB 文件；如果详情接口显示章节数为 0，说明源站当前还没放出可读章节，请换一本有章节的结果再试。
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className='min-h-[calc(100vh-3.5rem)] bg-gray-50 dark:bg-black'>
+      {tocOpen && typeof document !== 'undefined' ? createPortal(
+        <div className='fixed inset-0 z-40 bg-black/30' onClick={() => setTocOpen(false)}>
+          <div
+            className='absolute right-0 top-0 h-screen w-[22rem] max-w-[88vw] overflow-y-auto border-l border-gray-200 bg-white shadow-xl dark:border-gray-700 dark:bg-gray-950'
+            onClick={(event) => event.stopPropagation()}
+          >
+            <div className='sticky top-0 border-b border-gray-200 bg-white/95 p-4 backdrop-blur dark:border-gray-800 dark:bg-gray-950/95'>
+              <div className='text-base font-semibold'>章节目录</div>
+              <div className='mt-1 text-xs text-gray-500'>{manifest.book.title} · {chapters.length} 章</div>
+            </div>
+            <div className='space-y-2 p-4'>
+              {chapters.map((item, index) => {
+                const active = index === currentIndex;
+                return (
+                  <button
+                    key={`${item.href}-${item.order}-${index}`}
+                    onClick={() => {
+                      setCurrentIndex(index);
+                      setTocOpen(false);
+                    }}
+                    className={`block w-full rounded-2xl px-4 py-3 text-left text-sm transition ${active ? 'bg-sky-600 text-white' : 'text-gray-700 hover:bg-gray-100 dark:text-gray-200 dark:hover:bg-gray-900'}`}
+                    title={item.title}
+                  >
+                    <span className='block truncate'>{item.title}</span>
+                  </button>
+                );
+              })}
+            </div>
+          </div>
+        </div>,
+        document.body
+      ) : null}
+
+      <div className='mx-auto max-w-3xl px-4 py-6'>
+        <article className='text-lg leading-9 text-gray-800 dark:text-gray-100'>
+          {loading ? '加载中...' : chapter?.content?.includes('<img')
+            ? <div className='space-y-2' dangerouslySetInnerHTML={{ __html: chapter.content }} />
+            : <div className='whitespace-pre-wrap'>{chapter?.content || '本章暂无内容'}</div>}
+        </article>
+        <div className='mt-5 flex justify-between gap-3'>
+          <button disabled={currentIndex <= 0} onClick={() => setCurrentIndex((prev) => Math.max(0, prev - 1))} className='rounded-2xl border border-gray-200 px-4 py-2 text-sm disabled:text-gray-400 dark:border-gray-700'>上一章</button>
+          <button disabled={currentIndex >= chapters.length - 1} onClick={() => setCurrentIndex((prev) => Math.min(chapters.length - 1, prev + 1))} className='rounded-2xl bg-sky-600 px-4 py-2 text-sm text-white disabled:bg-gray-300'>下一章</button>
+        </div>
+      </div>
+    </div>
+  );
+}
+
 
 function normalizeHrefForMatch(href?: string) {
   if (!href) return '';
@@ -1174,7 +1321,7 @@ export default function BookReadPage() {
             sourceId: manifest.book.sourceId,
             bookId: manifest.book.id,
             title: manifest.book.title,
-            format: manifest.format,
+            format: 'epub',
             acquisitionHref: manifest.acquisitionHref || `${manifest.book.sourceId}:${manifest.book.id}:${manifest.format}`,
             blob,
             size: blob.size,
@@ -1655,6 +1802,10 @@ export default function BookReadPage() {
     );
   }
 
+  if (manifest.format === 'chapters') {
+    return <ChapterReader manifest={manifest} />;
+  }
+
   if (manifest.format === 'pdf') {
     if (!pdfBlobUrl) return <div className='p-4 text-sm text-gray-500'>PDF 加载中... {progressLabel}</div>;
     return <iframe src={pdfBlobUrl} className='h-[calc(100vh-4rem)] w-full bg-white' title={manifest.book.title} />;

src/components/books/BooksLayout.tsx

@@ -26,7 +26,7 @@ function getStaticMeta(pathname: string) {
   if (pathname === '/books/search') return { title: '电子书搜索', subtitle: '按书名与作者搜索' };
   if (pathname === '/books/detail') return { title: '电子书详情', subtitle: '查看书籍信息与可用格式' };
   if (pathname === '/books/read') return { title: '电子书阅读', subtitle: '分页阅读', backHref: '/books' };
-  return { title: '电子书馆', subtitle: 'OPDS 目录、搜索、阅读与书架' };
+  return { title: '电子书馆', subtitle: 'OPDS / Legado 目录、搜索、阅读与书架' };
 }
 
 export default function BooksLayout({ children }: { children: React.ReactNode }) {

src/lib/admin.types.ts

@@ -287,6 +287,7 @@ export interface AdminConfig {
     Sources?: Array<{
       id: string;
       name: string;
+      type?: 'opds' | 'legado';
       url: string;
       enabled?: boolean;
       authMode?: 'none' | 'basic' | 'header';
@@ -297,6 +298,7 @@ export interface AdminConfig {
       searchTemplate?: string;
       preferFormat?: Array<'epub' | 'pdf'>;
       language?: string;
+      legado?: import('./book.types').LegadoBookSourceRule;
     }>;
     CacheTTL?: number;
   };

src/lib/book-provider.ts

@@ -0,0 +1,84 @@
+import {
+  BookCatalogResult,
+  BookDetail,
+  BookListItem,
+  BookSearchFailure,
+  BookSearchResult,
+  BookSource,
+} from './book.types';
+import { legadoClient } from './legado.client';
+import { opdsClient } from './opds.client';
+
+function sourceKind(source?: Pick<BookSource, 'type'>) {
+  return source?.type === 'legado' || (source as BookSource | undefined)?.legado ? 'legado' : 'opds';
+}
+
+export class BookProvider {
+  async getSources(): Promise<BookSource[]> {
+    const [opdsSources, legadoSources] = await Promise.all([
+      opdsClient.getSources().catch(() => []),
+      legadoClient.getSources().catch(() => []),
+    ]);
+    return [...opdsSources.map((source) => ({ ...source, type: source.type || 'opds' as const })), ...legadoSources];
+  }
+
+  async getSourceById(sourceId: string): Promise<BookSource> {
+    const sources = await this.getSources();
+    const source = sources.find((item) => item.id === sourceId);
+    if (!source) throw new Error('未找到对应的电子书源');
+    return source;
+  }
+
+  async getCatalog(sourceId: string, href?: string): Promise<BookCatalogResult> {
+    const source = await this.getSourceById(sourceId);
+    return sourceKind(source) === 'legado'
+      ? legadoClient.getCatalog(sourceId, href)
+      : opdsClient.getCatalog(sourceId, href);
+  }
+
+  async getSearchSources(sourceId?: string): Promise<BookSource[]> {
+    if (sourceId) return [await this.getSourceById(sourceId)];
+    return this.getSources();
+  }
+
+  async searchBooksSource(q: string, source: BookSource): Promise<{ source: BookSource; results: BookListItem[] }> {
+    return sourceKind(source) === 'legado'
+      ? legadoClient.searchBooksSource(q, source)
+      : opdsClient.searchBooksSource(q, source);
+  }
+
+  async searchBooks(q: string, sourceId?: string): Promise<BookSearchResult> {
+    const sources = await this.getSearchSources(sourceId);
+    const results: BookListItem[] = [];
+    const failedSources: BookSearchFailure[] = [];
+    await Promise.all(sources.map(async (source) => {
+      try {
+        const sourceResult = await this.searchBooksSource(q, source);
+        results.push(...sourceResult.results);
+      } catch (error) {
+        failedSources.push({ sourceId: source.id, sourceName: source.name, error: (error as Error).message });
+      }
+    }));
+    return { results, failedSources };
+  }
+
+  async getBookDetail(sourceId: string, href: string, fallback?: Partial<BookDetail>): Promise<BookDetail> {
+    const source = await this.getSourceById(sourceId);
+    return sourceKind(source) === 'legado'
+      ? legadoClient.getBookDetail(sourceId, href, fallback)
+      : opdsClient.getBookDetail(sourceId, href, fallback);
+  }
+
+  async getPreferredAcquisition(sourceId: string, href: string): Promise<{ format: 'epub' | 'pdf' | 'chapters'; href: string }> {
+    const source = await this.getSourceById(sourceId);
+    if (sourceKind(source) === 'legado') {
+      const detail = await legadoClient.getBookDetail(sourceId, href);
+      const chapters = detail.acquisitionLinks.find((item) => item.type === 'application/x-legado-chapters+json') || detail.acquisitionLinks[0];
+      if (!chapters?.href) throw new Error('当前书籍没有可用章节目录');
+      return { format: 'chapters', href: chapters.href };
+    }
+    return opdsClient.getPreferredAcquisition(sourceId, href);
+  }
+}
+
+export const bookProvider = new BookProvider();

src/lib/book-route-cache.client.ts

@@ -16,7 +16,7 @@ export interface BookRouteCacheItem {
   detailHref?: string;
   acquisitionHref?: string;
   acquisitionLinks?: BookAcquisitionLink[];
-  format?: 'epub' | 'pdf';
+  format?: 'epub' | 'pdf' | 'chapters';
   updatedAt: number;
 }
 
@@ -76,7 +76,10 @@ export function cacheBookListItem(item: BookListItem) {
 }
 
 export function cacheBookDetail(detail: BookDetail) {
-  const readable = detail.acquisitionLinks.find((item) => item.type.toLowerCase().includes('epub') || item.type.toLowerCase().includes('pdf'));
+  const readable = detail.acquisitionLinks.find((item) => {
+    const type = item.type.toLowerCase();
+    return type.includes('epub') || type.includes('pdf') || type.includes('legado-chapters') || item.rel === 'legado:chapters';
+  });
   saveBookRouteCache({
     sourceId: detail.sourceId,
     bookId: detail.id,
@@ -87,7 +90,7 @@ export function cacheBookDetail(detail: BookDetail) {
     summary: detail.summary,
     detailHref: detail.detailHref,
     acquisitionHref: readable?.href,
-    format: readable?.type.toLowerCase().includes('pdf') ? 'pdf' : readable ? 'epub' : undefined,
+    format: readable?.type.toLowerCase().includes('pdf') ? 'pdf' : readable?.type.toLowerCase().includes('legado-chapters') || readable?.rel === 'legado:chapters' ? 'chapters' : readable ? 'epub' : undefined,
     acquisitionLinks: detail.acquisitionLinks,
   });
 }
@@ -124,6 +127,11 @@ export function buildBookDetailPath(sourceId: string, bookId: string) {
   return `/books/detail?sourceId=${encodeURIComponent(sourceId)}&bookId=${encodeURIComponent(bookId)}`;
 }
 
-export function buildBookReadPath(sourceId: string, bookId: string) {
+export function buildBookReadPath(sourceId: string, bookId: string, chapterHref?: string) {
-  return `/books/read?sourceId=${encodeURIComponent(sourceId)}&bookId=${encodeURIComponent(bookId)}`;
+  const params = new URLSearchParams({
+    sourceId,
+    bookId,
+  });
+  if (chapterHref) params.set('chapterHref', chapterHref);
+  return `/books/read?${params.toString()}`;
 }

src/lib/book.types.ts

@@ -1,16 +1,71 @@
 export interface BookSourceCapabilities {
   searchSupported: boolean;
   catalogSupported: boolean;
-  searchMode: 'opds' | 'template' | 'disabled';
+  searchMode: 'opds' | 'template' | 'legado' | 'disabled';
-  catalogMode: 'navigation' | 'acquisition' | 'flat' | 'disabled';
+  catalogMode: 'navigation' | 'acquisition' | 'flat' | 'legado' | 'disabled';
   acquisitionTypes: string[];
   lastCheckedAt?: number;
   lastError?: string;
 }
 
+export interface LegadoRuleSearch {
+  bookList?: string;
+  name?: string;
+  author?: string;
+  intro?: string;
+  coverUrl?: string;
+  bookUrl?: string;
+  kind?: string;
+  lastChapter?: string;
+}
+
+export interface LegadoRuleBookInfo {
+  name?: string;
+  author?: string;
+  intro?: string;
+  coverUrl?: string;
+  tocUrl?: string;
+  kind?: string;
+  lastChapter?: string;
+}
+
+export interface LegadoRuleToc {
+  chapterList?: string;
+  chapterName?: string;
+  chapterUrl?: string;
+  isVip?: string;
+  isPay?: string;
+}
+
+export interface LegadoRuleContent {
+  content?: string;
+  nextContentUrl?: string;
+}
+
+export interface LegadoBookSourceRule {
+  bookSourceName?: string;
+  bookSourceUrl?: string;
+  bookSourceGroup?: string;
+  enabled?: boolean;
+  enabledExplore?: boolean;
+  header?: string | Record<string, string>;
+  loginUrl?: string;
+  searchUrl?: string;
+  bookInfoUrl?: string;
+  tocUrl?: string;
+  chapterUrl?: string;
+  ruleSearch?: LegadoRuleSearch;
+  ruleBookInfo?: LegadoRuleBookInfo;
+  ruleToc?: LegadoRuleToc;
+  ruleContent?: LegadoRuleContent;
+  customOrder?: number;
+  weight?: number;
+}
+
 export interface BookSource {
   id: string;
   name: string;
+  type?: 'opds' | 'legado';
   url: string;
   enabled?: boolean;
   authMode?: 'none' | 'basic' | 'header';
@@ -21,6 +76,7 @@ export interface BookSource {
   searchTemplate?: string;
   preferFormat?: Array<'epub' | 'pdf'>;
   language?: string;
+  legado?: LegadoBookSourceRule;
   capabilities?: BookSourceCapabilities;
 }
 
@@ -87,7 +143,7 @@ export interface BookSearchResult {
 }
 
 export interface BookLocator {
-  type: 'epub-cfi' | 'pdf-page' | 'href';
+  type: 'epub-cfi' | 'pdf-page' | 'href' | 'chapter';
   value: string;
   href?: string;
   chapterTitle?: string;
@@ -100,7 +156,7 @@ export interface BookShelfItem {
   title: string;
   author?: string;
   cover?: string;
-  format?: 'epub' | 'pdf';
+  format?: 'epub' | 'pdf' | 'chapters';
   detailHref?: string;
   acquisitionHref?: string;
   progressPercent?: number;
@@ -118,7 +174,7 @@ export interface BookReadRecord {
   title: string;
   author?: string;
   cover?: string;
-  format: 'epub' | 'pdf';
+  format: 'epub' | 'pdf' | 'chapters';
   detailHref?: string;
   acquisitionHref?: string;
   locator: BookLocator;
@@ -159,10 +215,27 @@ export interface BookTtsProgress {
 
 export interface BookReadManifest {
   book: BookDetail;
-  format: 'epub' | 'pdf';
+  format: 'epub' | 'pdf' | 'chapters';
-  fileUrl: string;
+  fileUrl?: string;
+  chaptersUrl?: string;
   acquisitionHref?: string;
   cacheKey?: string;
   coverUrl?: string;
   lastRecord?: BookReadRecord | null;
 }
+
+export interface BookChapter {
+  id: string;
+  title: string;
+  href: string;
+  order: number;
+}
+
+export interface BookChapterContent {
+  id: string;
+  title: string;
+  href: string;
+  content: string;
+  nextHref?: string;
+  previousHref?: string;
+}

src/lib/config.ts

@@ -695,6 +695,7 @@ export function configSelfCheck(adminConfig: AdminConfig): AdminConfig {
         return [{
           id: 'default',
           name: process.env.OPDS_NAME || '默认书源',
+          type: 'opds',
           url: envUrl,
           enabled: true,
           authMode: (process.env.OPDS_AUTH_MODE as 'none' | 'basic' | 'header' | undefined) || 'none',

src/lib/legado.client.ts

@@ -0,0 +1,687 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+import * as cheerio from 'cheerio/slim';
+import crypto from 'crypto';
+import he from 'he';
+
+import { getConfig } from './config';
+import {
+  BookAcquisitionLink,
+  BookCatalogResult,
+  BookChapter,
+  BookChapterContent,
+  BookDetail,
+  BookListItem,
+  BookSearchFailure,
+  BookSearchResult,
+  BookSource,
+  BookSourceCapabilities,
+  LegadoBookSourceRule,
+} from './book.types';
+import { validateProxyUrlServerSide } from './server/ssrf';
+
+interface ResolvedLegadoConfig {
+  enabled: boolean;
+  sources: BookSource[];
+  cacheTTL: number;
+}
+
+const DEFAULT_TIMEOUT_MS = Number(process.env.LEGADO_TIMEOUT_MS || process.env.OPDS_TIMEOUT_MS || 20000);
+const MAX_TEXT_BYTES = Number(process.env.LEGADO_MAX_TEXT_BYTES || 3 * 1024 * 1024);
+const LEGADO_CACHE_VERSION = 'v5';
+const textCache = new Map<string, { expiresAt: number; data: string }>();
+const searchCache = new Map<string, { expiresAt: number; data: BookListItem[] }>();
+const detailCache = new Map<string, { expiresAt: number; data: BookDetail }>();
+const tocCache = new Map<string, { expiresAt: number; data: BookChapter[] }>();
+const chapterCache = new Map<string, { expiresAt: number; data: BookChapterContent }>();
+
+function stableId(input: string) {
+  return crypto.createHash('sha1').update(input).digest('hex').slice(0, 16);
+}
+
+function asObjectHeader(value?: string | Record<string, string>): Record<string, string> {
+  if (!value) return {};
+  if (typeof value === 'object') return value;
+  try {
+    const parsed = JSON.parse(value);
+    return parsed && typeof parsed === 'object' ? parsed : {};
+  } catch {
+    return value.split('\n').reduce<Record<string, string>>((headers, line) => {
+      const index = line.indexOf(':');
+      if (index > 0) headers[line.slice(0, index).trim()] = line.slice(index + 1).trim();
+      return headers;
+    }, {});
+  }
+}
+
+function buildHeaders(source: BookSource): HeadersInit {
+  const rule = source.legado;
+  const headers: Record<string, string> = {
+    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0 Safari/537.36',
+    Accept: 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
+    ...asObjectHeader(rule?.header),
+  };
+  if (source.authMode === 'header' && source.headerName && source.headerValue) headers[source.headerName] = source.headerValue;
+  if (source.authMode === 'basic' && source.username) headers.Authorization = `Basic ${Buffer.from(`${source.username}:${source.password || ''}`).toString('base64')}`;
+  delete headers.Host;
+  delete headers.host;
+  delete headers['Content-Length'];
+  delete headers['content-length'];
+  return headers;
+}
+
+function sourceBase(source: BookSource) {
+  return source.legado?.bookSourceUrl || source.url;
+}
+
+function normalizeUrl(base: string, href?: string): string {
+  if (!href) return base;
+  const trimmed = href.trim();
+  if (!trimmed) return base;
+  if (/^javascript:/i.test(trimmed)) return '';
+  return new URL(trimmed, base).toString();
+}
+
+function encodeRuleParam(value: string) {
+  return encodeURIComponent(value).replace(/%20/g, '+');
+}
+
+function buildUrlFromTemplate(template: string, source: BookSource, keyword?: string, page = 1, baseOverride?: string) {
+  const base = baseOverride || sourceBase(source);
+  let raw = template || base;
+  raw = raw.replace(/\{\{(?:key|keyword|searchTerms)\}\}/g, encodeRuleParam(keyword || ''));
+  raw = raw.replace(/\{\{(?:page|pageIndex)\}\}/g, String(page));
+  raw = raw
+    .replace(/\{searchTerms\}/g, encodeRuleParam(keyword || ''))
+    .replace(/\{key\}/g, encodeRuleParam(keyword || ''))
+    .replace(/\{keyword\}/g, encodeRuleParam(keyword || ''))
+    .replace(/\{page\}/g, String(page))
+    .replace(/\{pageIndex\}/g, String(page));
+  if (raw.includes('{{') && keyword) raw = raw.replace(/\{\{.*?\}\}/g, encodeRuleParam(keyword));
+  return normalizeUrl(base, raw);
+}
+
+function parseJsonMaybe(value: string): any | null {
+  try {
+    return JSON.parse(value);
+  } catch {
+    return null;
+  }
+}
+
+function jsonPrimitiveToString(value: any): string {
+  if (value === undefined || value === null) return '';
+  if (typeof value === 'string') return value.trim();
+  if (typeof value === 'number' || typeof value === 'boolean') return String(value);
+  if (Array.isArray(value)) return value.map(jsonPrimitiveToString).filter(Boolean).join(', ');
+  try {
+    return JSON.stringify(value);
+  } catch {
+    return String(value);
+  }
+}
+
+function readJsonPath(input: any, path?: string): any {
+  if (!path) return input;
+  let normalized = path.trim();
+  if (normalized.startsWith('@json:')) normalized = normalized.slice(6);
+  if (normalized.startsWith('-@json:')) normalized = normalized.slice(7);
+  if (!normalized || normalized === '$') return input;
+
+  const recursive = normalized.match(/^\$\.\.([A-Za-z0-9_$-]+)\[\*\]$/);
+  if (recursive) {
+    const key = recursive[1];
+    const out: any[] = [];
+    const walk = (node: any) => {
+      if (!node || typeof node !== 'object') return;
+      if (Array.isArray(node)) {
+        node.forEach(walk);
+        return;
+      }
+      if (Array.isArray(node[key])) out.push(...node[key]);
+      Object.values(node).forEach(walk);
+    };
+    walk(input);
+    return out;
+  }
+
+  normalized = normalized.replace(/^\$\.?/, '');
+  const tokens = normalized.match(/[^.[\]]+|\[\*\]|\[\d+\]/g) || [];
+  let current = input;
+  for (const token of tokens) {
+    if (current === undefined || current === null) return undefined;
+    if (token === '[*]') {
+      if (!Array.isArray(current)) return [];
+      current = current.flat();
+    } else if (/^\[\d+\]$/.test(token)) {
+      current = Array.isArray(current) ? current[Number(token.slice(1, -1))] : undefined;
+    } else if (Array.isArray(current)) {
+      current = current.map((item) => item?.[token]).filter((item) => item !== undefined);
+    } else {
+      current = current[token];
+    }
+  }
+  return current;
+}
+
+function ruleIsJson(rule?: string) {
+  return !!rule && /@json:|-@json:|^\$\./.test(rule.trim());
+}
+
+function selectJsonItems(json: any, rule?: string): any[] {
+  const reverse = !!rule?.trim().startsWith('-');
+  const value = readJsonPath(json, rule);
+  const list = Array.isArray(value) ? value : value ? [value] : [];
+  return reverse ? [...list].reverse() : list;
+}
+
+function renderTemplateWithJson(template: string, json: any, source: BookSource, baseUrl: string) {
+  const rendered = template.replace(/\{\{(.*?)\}\}/g, (_, expr) => {
+    const normalizedExpr = String(expr).trim().replace(/^@json:/, '');
+    const value = readJsonPath(json, normalizedExpr);
+    return encodeRuleParam(jsonPrimitiveToString(value));
+  });
+  return normalizeUrl(baseUrl || sourceBase(source), rendered);
+}
+
+function readJsonRule(json: any, rule?: string, source?: BookSource, baseUrl?: string): string {
+  if (!rule) return '';
+  const trimmed = rule.trim();
+  if (trimmed.includes('{{')) return renderTemplateWithJson(trimmed, json, source as BookSource, baseUrl || sourceBase(source as BookSource));
+  if (trimmed.startsWith('@js:')) {
+    if (/result\s*=\s*['"]([^'"]+)['"]\s*\+\s*result\.([A-Za-z0-9_$-]+)/.test(trimmed)) {
+      const match = trimmed.match(/result\s*=\s*['"]([^'"]+)['"]\s*\+\s*result\.([A-Za-z0-9_$-]+)/);
+      return normalizeUrl(baseUrl || sourceBase(source as BookSource), `${match?.[1] || ''}${jsonPrimitiveToString(json?.[match?.[2] || ''])}`);
+    }
+    if (/item\.img|\.reverse\(\)/.test(trimmed)) {
+      const data = Array.isArray(json?.data) ? [...json.data].reverse() : Array.isArray(json) ? [...json].reverse() : [];
+      return data
+        .map((item) => item?.img ? `<img src="${String(item.img)}" style="max-width:100%; display:block;" referrerpolicy="no-referrer">` : '')
+        .filter(Boolean)
+        .join('');
+    }
+    return '';
+  }
+  const value = readJsonPath(json, trimmed);
+  const text = jsonPrimitiveToString(value);
+  if ((/url|href|pic|cover/i.test(trimmed) || /^https?:\/\//i.test(text)) && text && baseUrl) return normalizeUrl(baseUrl, text);
+  return text;
+}
+
+function fallbackChapterHrefFromItem(item: any, rule?: string, baseUrl?: string): string {
+  const id = jsonPrimitiveToString(item?.id || item?.cid || item?.chapter_id || item?.chapterId);
+  if (!id) return '';
+  const match = (rule || '').match(/['"]([^'"]*(?:pic|chapter)[^'"]*(?:cid|id)=)['"]/i);
+  if (match?.[1]) return normalizeUrl(baseUrl || '', `${match[1]}${id}`);
+  return '';
+}
+
+function splitAlternatives(rule?: string): string[] {
+  return (rule || '').split('||').map((item) => item.trim()).filter(Boolean);
+}
+
+function parseStep(step: string): { selector: string; attr: string } {
+  const trimmed = step.trim();
+  const attrMatch = trimmed.match(/(?:@|::)(text|textNodes|html|href|src|content|value|data-[\w-]+|[\w-]+)$/i);
+  if (attrMatch) {
+    return { selector: trimmed.slice(0, attrMatch.index).trim(), attr: attrMatch[1] };
+  }
+  const dotAttr = trimmed.match(/\.(text|html|href|src)$/i);
+  if (dotAttr) return { selector: trimmed.slice(0, dotAttr.index).trim(), attr: dotAttr[1] };
+  return { selector: trimmed, attr: '' };
+}
+
+function stripFilters(rule: string) {
+  return rule.split('##')[0].trim();
+}
+
+function selectElements($: cheerio.CheerioAPI, root: cheerio.Cheerio<any>, rule?: string): cheerio.Cheerio<any> {
+  const normalized = stripFilters(rule || '');
+  if (!normalized) return root;
+  const steps = normalized.split(/&&|@css:/).map((item) => item.trim()).filter(Boolean);
+  let current = root;
+  for (const rawStep of steps) {
+    const { selector, attr } = parseStep(rawStep);
+    if (!selector || attr) break;
+    current = current.find(selector);
+  }
+  return current;
+}
+
+function readValue($: cheerio.CheerioAPI, root: cheerio.Cheerio<any>, rule?: string, baseUrl?: string): string {
+  for (const alternative of splitAlternatives(rule)) {
+    const normalized = stripFilters(alternative);
+    const steps = normalized.split(/&&|@css:/).map((item) => item.trim()).filter(Boolean);
+    let current = root;
+    let attr = '';
+    for (const rawStep of steps) {
+      const parsed = parseStep(rawStep);
+      if (parsed.selector) current = current.find(parsed.selector);
+      if (parsed.attr) attr = parsed.attr;
+    }
+    if (current.length === 0 && steps.length === 1) {
+      const parsed = parseStep(steps[0]);
+      if (!parsed.selector && parsed.attr) current = root;
+    }
+    const node = current.first();
+    let value = '';
+    const normalizedAttr = attr.toLowerCase();
+    if (!attr || normalizedAttr === 'text' || normalizedAttr === 'textnodes') value = node.text();
+    else if (normalizedAttr === 'html') value = node.html() || '';
+    else value = node.attr(attr) || '';
+    value = he.decode(value || '').replace(/\u00a0/g, ' ').trim();
+    if ((normalizedAttr === 'href' || normalizedAttr === 'src') && value && baseUrl) value = normalizeUrl(baseUrl, value);
+    if (value) return value;
+  }
+  return '';
+}
+
+function contentFromRule(raw: string, rule?: string, baseUrl?: string): string {
+  const json = parseJsonMaybe(raw);
+  if (json && (ruleIsJson(rule) || rule?.trim().startsWith('@js:'))) {
+    return readJsonRule(json, rule, undefined, baseUrl);
+  }
+  const $ = cheerio.load(raw);
+  return readValue($, $.root(), rule, baseUrl);
+}
+
+function cleanContent(value: string) {
+  const decoded = he.decode(value || '').trim();
+  if (/<img\b/i.test(decoded)) return decoded;
+  return decoded
+    .replace(/<br\s*\/?>/gi, '\n')
+    .replace(/<\/p>/gi, '\n')
+    .replace(/<[^>]+>/g, '')
+    .replace(/\r/g, '')
+    .split('\n')
+    .map((line) => line.trim())
+    .filter(Boolean)
+    .join('\n\n');
+}
+
+async function resolveLegadoConfig(): Promise<ResolvedLegadoConfig> {
+  let enabled = process.env.OPDS_ENABLED === 'true' || process.env.LEGADO_ENABLED === 'true';
+  let sources: BookSource[] = [];
+  const cacheTTL = Number(process.env.LEGADO_CACHE_TTL_MS || process.env.OPDS_CACHE_TTL_MS || 10 * 60 * 1000);
+
+  const envJson = process.env.LEGADO_SOURCES_JSON;
+  if (envJson) {
+    try {
+      const parsed = JSON.parse(envJson);
+      sources = normalizeImportedSources(parsed);
+    } catch {}
+  }
+
+  try {
+    const config = await getConfig();
+    if (config.OPDSConfig) {
+      enabled = config.OPDSConfig.Enabled ?? enabled;
+      if (Array.isArray(config.OPDSConfig.Sources)) {
+        sources = (config.OPDSConfig.Sources as BookSource[])
+          .map((source, index) => normalizeConfiguredLegadoSource(source, index))
+          .filter((source): source is BookSource => !!source);
+      }
+    }
+  } catch {}
+
+  return { enabled, cacheTTL, sources: sources.filter((source) => !!source.url && source.enabled !== false) };
+}
+
+export function normalizeImportedSources(input: unknown): BookSource[] {
+  const list = Array.isArray(input) ? input : [input];
+  return list
+    .filter((item): item is LegadoBookSourceRule => !!item && typeof item === 'object')
+    .map((rule, index) => {
+      const name = rule.bookSourceName || `Legado 书源 ${index + 1}`;
+      const url = rule.bookSourceUrl || '';
+      return {
+        id: `legado_${stableId(`${name}|${url}|${index}`)}`,
+        name,
+        type: 'legado' as const,
+        url,
+        enabled: rule.enabled !== false,
+        authMode: 'none' as const,
+        preferFormat: ['epub' as const],
+        language: '',
+        legado: rule,
+      };
+    })
+    .filter((source) => !!source.url);
+}
+
+function normalizeConfiguredLegadoSource(item: any, index: number): BookSource | null {
+  if (!item || typeof item !== 'object') return null;
+  if (item.type === 'legado' || item.legado) {
+    const rule = item.legado || item;
+    const name = item.name || rule.bookSourceName || `Legado 书源 ${index + 1}`;
+    const url = item.url || rule.bookSourceUrl || '';
+    if (!url) return null;
+    return {
+      ...item,
+      id: item.id || `legado_${stableId(`${name}|${url}|${index}`)}`,
+      name,
+      type: 'legado',
+      url,
+      enabled: item.enabled !== false && rule.enabled !== false,
+      authMode: item.authMode || 'none',
+      legado: { ...rule, bookSourceName: rule.bookSourceName || name, bookSourceUrl: rule.bookSourceUrl || url },
+    };
+  }
+  if (item.bookSourceUrl || item.searchUrl || item.ruleSearch) {
+    return normalizeImportedSources([item])[0] || null;
+  }
+  return null;
+}
+
+async function fetchText(source: BookSource, url: string): Promise<string> {
+  const safe = await validateProxyUrlServerSide(url);
+  if (!safe) throw new Error('书源地址未通过安全校验');
+  const cacheKey = `${LEGADO_CACHE_VERSION}|text|${source.id}|${url}`;
+  const cached = textCache.get(cacheKey);
+  const { cacheTTL } = await resolveLegadoConfig();
+  if (cached && cached.expiresAt > Date.now()) return cached.data;
+
+  const controller = new AbortController();
+  const timeout = setTimeout(() => controller.abort(), DEFAULT_TIMEOUT_MS);
+  try {
+    const response = await fetch(url, { headers: buildHeaders(source), signal: controller.signal, cache: 'no-store' });
+    if (!response.ok) throw new Error(`请求失败: ${response.status}`);
+    const contentLength = Number(response.headers.get('content-length') || '0');
+    if (contentLength > MAX_TEXT_BYTES) throw new Error('响应内容过大');
+    const text = await response.text();
+    if (text.length > MAX_TEXT_BYTES) throw new Error('响应内容过大');
+    textCache.set(cacheKey, { data: text, expiresAt: Date.now() + cacheTTL });
+    return text;
+  } finally {
+    clearTimeout(timeout);
+  }
+}
+
+async function getSourceById(sourceId: string): Promise<BookSource> {
+  const config = await resolveLegadoConfig();
+  const source = config.sources.find((item) => item.id === sourceId);
+  if (!source) throw new Error('未找到对应的 Legado 书源');
+  return source;
+}
+
+function getRule(source: BookSource): LegadoBookSourceRule {
+  if (!source.legado) throw new Error('Legado 书源缺少规则');
+  return source.legado;
+}
+
+function makeItem(source: BookSource, partial: Partial<BookListItem> & { detailHref?: string; title?: string }): BookListItem {
+  const detailHref = partial.detailHref || '';
+  return {
+    id: partial.id || stableId(`${source.id}|${detailHref || partial.title || Date.now()}`),
+    sourceId: source.id,
+    sourceName: source.name,
+    title: partial.title || '未命名电子书',
+    author: partial.author,
+    cover: partial.cover,
+    summary: partial.summary,
+    tags: partial.tags,
+    detailHref,
+    acquisitionLinks: partial.acquisitionLinks || [],
+  };
+}
+
+export class LegadoClient {
+  async getSources(): Promise<BookSource[]> {
+    const config = await resolveLegadoConfig();
+    if (!config.enabled) return [];
+    return config.sources.map((source) => ({
+      ...source,
+      capabilities: {
+        searchSupported: !!source.legado?.searchUrl,
+        catalogSupported: false,
+        searchMode: source.legado?.searchUrl ? 'legado' : 'disabled',
+        catalogMode: 'legado',
+        acquisitionTypes: ['application/x-legado-chapters+json'],
+        lastCheckedAt: Date.now(),
+      },
+    }));
+  }
+
+  async getSearchSources(sourceId?: string): Promise<BookSource[]> {
+    return sourceId ? [await getSourceById(sourceId)] : (await resolveLegadoConfig()).sources;
+  }
+
+  async searchBooksSource(q: string, source: BookSource): Promise<{ source: BookSource; results: BookListItem[] }> {
+    const rule = getRule(source);
+    if (!rule.searchUrl || !rule.ruleSearch?.bookList) throw new Error('该 Legado 书源不支持搜索');
+    const cacheKey = `${LEGADO_CACHE_VERSION}|search|${source.id}|${q}`;
+    const { cacheTTL } = await resolveLegadoConfig();
+    const cached = searchCache.get(cacheKey);
+    if (cached && cached.expiresAt > Date.now()) return { source, results: cached.data };
+
+    const targetUrl = buildUrlFromTemplate(rule.searchUrl, source, q, 1);
+    const html = await fetchText(source, targetUrl);
+    const results: BookListItem[] = [];
+    const json = parseJsonMaybe(html);
+    if (json && ruleIsJson(rule.ruleSearch.bookList)) {
+      const items = selectJsonItems(json, rule.ruleSearch.bookList);
+      items.forEach((item) => {
+        const detailHref = readJsonRule(item, rule.ruleSearch?.bookUrl, source, targetUrl);
+        const title = readJsonRule(item, rule.ruleSearch?.name, source, targetUrl);
+        if (!title && !detailHref) return;
+        const cover = readJsonRule(item, rule.ruleSearch?.coverUrl, source, targetUrl);
+        results.push(makeItem(source, {
+          id: jsonPrimitiveToString(item?.id) || undefined,
+          title,
+          author: readJsonRule(item, rule.ruleSearch?.author, source, targetUrl),
+          summary: readJsonRule(item, rule.ruleSearch?.intro, source, targetUrl),
+          cover: cover || undefined,
+          detailHref,
+          tags: readJsonRule(item, rule.ruleSearch?.kind, source, targetUrl).split(/[,，\s]+/).filter(Boolean),
+        }));
+      });
+    } else {
+      const $ = cheerio.load(html);
+      const items = selectElements($, $.root(), rule.ruleSearch.bookList);
+      items.each((_, element) => {
+        const root = $(element);
+        const detailHref = readValue($, root, rule.ruleSearch?.bookUrl, targetUrl);
+        const title = readValue($, root, rule.ruleSearch?.name, targetUrl);
+        if (!title && !detailHref) return;
+        const cover = readValue($, root, rule.ruleSearch?.coverUrl, targetUrl);
+        results.push(makeItem(source, {
+          title,
+          author: readValue($, root, rule.ruleSearch?.author, targetUrl),
+          summary: readValue($, root, rule.ruleSearch?.intro, targetUrl),
+          cover: cover || undefined,
+          detailHref,
+          tags: readValue($, root, rule.ruleSearch?.kind, targetUrl).split(/[,，\s]+/).filter(Boolean),
+        }));
+      });
+    }
+    searchCache.set(cacheKey, { data: results, expiresAt: Date.now() + cacheTTL });
+    return { source, results };
+  }
+
+  async searchBooks(q: string, sourceId?: string): Promise<BookSearchResult> {
+    const sources = await this.getSearchSources(sourceId);
+    const results: BookListItem[] = [];
+    const failedSources: BookSearchFailure[] = [];
+    await Promise.all(sources.map(async (source) => {
+      try {
+        const sourceResult = await this.searchBooksSource(q, source);
+        results.push(...sourceResult.results);
+      } catch (error) {
+        failedSources.push({ sourceId: source.id, sourceName: source.name, error: (error as Error).message });
+      }
+    }));
+    return { results, failedSources };
+  }
+
+  async getCatalog(sourceId: string, href?: string): Promise<BookCatalogResult> {
+    const source = await getSourceById(sourceId);
+    return {
+      sourceId: source.id,
+      sourceName: source.name,
+      title: source.name,
+      href: href || source.url,
+      entries: [],
+      navigation: [],
+    };
+  }
+
+  async getChaptersByBookId(sourceId: string, bookId: string): Promise<BookChapter[]> {
+    const source = await getSourceById(sourceId);
+    const rule = getRule(source);
+    const base = sourceBase(source);
+    const detailHref = rule.ruleSearch?.bookUrl
+      ? normalizeUrl(base, rule.ruleSearch.bookUrl
+        .replace(/\{\{\s*\$\.id\s*\}\}/g, encodeURIComponent(bookId))
+        .replace(/\{\{\s*id\s*\}\}/g, encodeURIComponent(bookId))
+        .replace(/\{id\}/g, encodeURIComponent(bookId)))
+      : '';
+    if (!detailHref) throw new Error('该 Legado 书源无法通过 bookId 定位详情');
+    const detail = await this.getBookDetail(sourceId, detailHref, { id: bookId, detailHref });
+    const tocHref = detail.acquisitionLinks.find((item) => item.rel === 'legado:chapters' || item.type.toLowerCase().includes('legado-chapters'))?.href;
+    if (!tocHref) return [];
+    return this.getChapters(sourceId, tocHref);
+  }
+
+  async getBookDetail(sourceId: string, href: string, fallback?: Partial<BookDetail>): Promise<BookDetail> {
+    const source = await getSourceById(sourceId);
+    const rule = getRule(source);
+    const detailHref = href || fallback?.detailHref || '';
+    const cacheKey = `${LEGADO_CACHE_VERSION}|detail|${source.id}|${detailHref}`;
+    const { cacheTTL } = await resolveLegadoConfig();
+    const cached = detailCache.get(cacheKey);
+    if (cached && cached.expiresAt > Date.now()) return { ...cached.data, ...(!href && fallback ? fallback : {}) };
+
+    let detail: BookDetail | null = null;
+    if (detailHref && rule.ruleBookInfo) {
+      const targetUrl = rule.bookInfoUrl ? buildUrlFromTemplate(rule.bookInfoUrl, source, undefined, 1, detailHref).replace(/\{bookUrl\}/g, encodeURIComponent(detailHref)) : detailHref;
+      const html = await fetchText(source, targetUrl);
+      const json = parseJsonMaybe(html);
+      const $ = json ? null : cheerio.load(html);
+      const root = $?.root();
+      const read = (itemRule?: string) => json
+        ? readJsonRule(json, itemRule, source, targetUrl)
+        : readValue($ as cheerio.CheerioAPI, root as cheerio.Cheerio<any>, itemRule, targetUrl);
+      const tocUrl = read(rule.ruleBookInfo.tocUrl) || (rule.tocUrl ? buildUrlFromTemplate(rule.tocUrl, source, undefined, 1, detailHref).replace(/\{bookUrl\}/g, encodeURIComponent(detailHref)) : targetUrl);
+      const cover = read(rule.ruleBookInfo.coverUrl) || fallback?.cover;
+      const title = read(rule.ruleBookInfo.name) || fallback?.title || '未命名电子书';
+      const chapterCountText = json
+        ? jsonPrimitiveToString(readJsonPath(json, '@json:$.data.nums') ?? readJsonPath(json, '@json:$.data.chapter_nums'))
+        : '';
+      const chapterCount = chapterCountText ? Number(chapterCountText) : NaN;
+      const hasKnownEmptyChapters = Number.isFinite(chapterCount) && chapterCount <= 0;
+      const acquisitionLinks: BookAcquisitionLink[] = hasKnownEmptyChapters ? [] : [{ rel: 'legado:chapters', type: 'application/x-legado-chapters+json', href: tocUrl, title: '章节目录' }];
+      detail = {
+        id: fallback?.id || stableId(`${source.id}|${detailHref || title}`),
+        sourceId,
+        sourceName: source.name,
+        title,
+        author: read(rule.ruleBookInfo.author) || fallback?.author,
+        cover: cover || undefined,
+        summary: read(rule.ruleBookInfo.intro) || fallback?.summary,
+        tags: read(rule.ruleBookInfo.kind).split(/[,，\s]+/).filter(Boolean),
+        categories: read(rule.ruleBookInfo.kind).split(/[,，\s]+/).filter(Boolean),
+        detailHref,
+        acquisitionLinks,
+        navigation: hasKnownEmptyChapters ? [] : [{ title: '目录', href: tocUrl, rel: 'legado:toc', type: 'application/x-legado-chapters+json' }],
+      };
+    }
+
+    if (!detail) {
+      const tocUrl = fallback?.acquisitionLinks?.[0]?.href || detailHref;
+      detail = {
+        id: fallback?.id || stableId(`${source.id}|${detailHref || fallback?.title || ''}`),
+        sourceId,
+        sourceName: source.name,
+        title: fallback?.title || '未命名电子书',
+        author: fallback?.author,
+        cover: fallback?.cover,
+        summary: fallback?.summary,
+        detailHref,
+        acquisitionLinks: [{ rel: 'legado:chapters', type: 'application/x-legado-chapters+json', href: tocUrl, title: '章节目录' }],
+        navigation: [{ title: '目录', href: tocUrl, rel: 'legado:toc', type: 'application/x-legado-chapters+json' }],
+      };
+    }
+    detailCache.set(cacheKey, { data: detail, expiresAt: Date.now() + cacheTTL });
+    return detail;
+  }
+
+  async getChapters(sourceId: string, tocHref: string): Promise<BookChapter[]> {
+    const source = await getSourceById(sourceId);
+    const rule = getRule(source);
+    if (!rule.ruleToc?.chapterList) throw new Error('该 Legado 书源缺少目录规则');
+    const cacheKey = `${LEGADO_CACHE_VERSION}|toc|${source.id}|${tocHref}`;
+    const { cacheTTL } = await resolveLegadoConfig();
+    const cached = tocCache.get(cacheKey);
+    if (cached && cached.expiresAt > Date.now()) return cached.data;
+
+    const targetUrl = normalizeUrl(sourceBase(source), tocHref);
+    const html = await fetchText(source, targetUrl);
+    const chapters: BookChapter[] = [];
+    const json = parseJsonMaybe(html);
+    if (json && ruleIsJson(rule.ruleToc.chapterList)) {
+      const items = selectJsonItems(json, rule.ruleToc.chapterList);
+      items.forEach((item, index) => {
+        const title = readJsonRule(item, rule.ruleToc?.chapterName, source, targetUrl) || `第 ${index + 1} 章`;
+        const href = readJsonRule(item, rule.ruleToc?.chapterUrl, source, targetUrl)
+          || fallbackChapterHrefFromItem(item, rule.ruleToc?.chapterUrl, targetUrl);
+        if (!href) return;
+        const normalizedHref = normalizeUrl(targetUrl, href);
+        chapters.push({ id: stableId(`${source.id}|${normalizedHref}`), title, href: normalizedHref, order: index });
+      });
+    } else {
+      const $ = cheerio.load(html);
+      const items = selectElements($, $.root(), rule.ruleToc.chapterList);
+      items.each((index, element) => {
+        const root = $(element);
+        const title = readValue($, root, rule.ruleToc?.chapterName, targetUrl) || `第 ${index + 1} 章`;
+        const href = readValue($, root, rule.ruleToc?.chapterUrl, targetUrl) || root.attr('href') || '';
+        if (!href) return;
+        const normalizedHref = normalizeUrl(targetUrl, href);
+        chapters.push({ id: stableId(`${source.id}|${normalizedHref}`), title, href: normalizedHref, order: index });
+      });
+    }
+    tocCache.set(cacheKey, { data: chapters, expiresAt: Date.now() + cacheTTL });
+    return chapters;
+  }
+
+  async getChapterContent(sourceId: string, chapterHref: string, tocHref?: string): Promise<BookChapterContent> {
+    const source = await getSourceById(sourceId);
+    const rule = getRule(source);
+    if (!rule.ruleContent?.content) throw new Error('该 Legado 书源缺少正文规则');
+    const targetUrl = normalizeUrl(sourceBase(source), chapterHref);
+    const cacheKey = `${LEGADO_CACHE_VERSION}|chapter|${source.id}|${targetUrl}`;
+    const cached = chapterCache.get(cacheKey);
+    if (cached && cached.expiresAt > Date.now()) return cached.data;
+
+    const html = await fetchText(source, targetUrl);
+    const rawContent = contentFromRule(html, rule.ruleContent.content, targetUrl);
+    const chapters = tocHref ? await this.getChapters(sourceId, tocHref).catch(() => []) : [];
+    const index = chapters.findIndex((item) => item.href === targetUrl || item.href === chapterHref);
+    const content: BookChapterContent = {
+      id: stableId(`${source.id}|${targetUrl}`),
+      title: index >= 0 ? chapters[index].title : '',
+      href: targetUrl,
+      content: cleanContent(rawContent),
+      previousHref: index > 0 ? chapters[index - 1].href : undefined,
+      nextHref: index >= 0 && index + 1 < chapters.length ? chapters[index + 1].href : undefined,
+    };
+    chapterCache.set(cacheKey, { data: content, expiresAt: Date.now() + 24 * 60 * 60 * 1000 });
+    return content;
+  }
+
+  async getSourceById(sourceId: string): Promise<BookSource> {
+    return getSourceById(sourceId);
+  }
+
+  async detectCapabilitiesFromSource(source: BookSource): Promise<BookSourceCapabilities> {
+    return {
+      searchSupported: !!source.legado?.searchUrl,
+      catalogSupported: false,
+      searchMode: source.legado?.searchUrl ? 'legado' : 'disabled',
+      catalogMode: 'legado',
+      acquisitionTypes: ['application/x-legado-chapters+json'],
+      lastCheckedAt: Date.now(),
+    };
+  }
+}
+
+export const legadoClient = new LegadoClient();

src/lib/opds.client.ts

@@ -234,7 +234,7 @@ async function resolveOPDSConfig(): Promise<ResolvedOPDSConfig> {
   return {
     enabled,
     cacheTTL,
-    sources: (sources || []).filter((source) => !!source?.url && source.enabled !== false),
+    sources: (sources || []).filter((source) => !!source?.url && source.enabled !== false && (source.type || 'opds') === 'opds' && !source.legado),
   };
 }