115网盘在线播放

src/lib/netdisk/pan115-session-cache.ts

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+import { base58Decode, base58Encode } from '@/lib/utils';
+
+import type { Pan115ShareVideoFile } from './pan115.client';
+
+export interface Pan115NetdiskSession {
+  id: string;
+  provider: '115';
+  title: string;
+  shareUrl: string;
+  passcode?: string;
+  files: Pan115ShareVideoFile[];
+  createdAt: number;
+  expiresAt: number;
+}
+
+const TTL_MS = 30 * 60 * 1000;
+const sessionStore = new Map<string, Pan115NetdiskSession>();
+
+export function buildPan115NetdiskId(input: { shareUrl: string; passcode?: string }) {
+  return base58Encode(JSON.stringify({ shareUrl: input.shareUrl, passcode: input.passcode || '' }));
+}
+
+export function parsePan115NetdiskId(id: string): { shareUrl: string; passcode?: string } {
+  try {
+    const decoded = base58Decode(id);
+    const parsed = JSON.parse(decoded);
+    if (!parsed?.shareUrl || typeof parsed.shareUrl !== 'string') throw new Error('invalid 115 netdisk id');
+    return {
+      shareUrl: parsed.shareUrl,
+      passcode: typeof parsed.passcode === 'string' ? parsed.passcode : '',
+    };
+  } catch {
+    throw new Error('无效的115网盘播放 ID');
+  }
+}
+
+function pruneExpiredSessions() {
+  const now = Date.now();
+  for (const [key, value] of Array.from(sessionStore.entries())) {
+    if (value.expiresAt <= now) sessionStore.delete(key);
+  }
+}
+
+export function createPan115NetdiskSession(input: {
+  title: string;
+  shareUrl: string;
+  passcode?: string;
+  files: Pan115ShareVideoFile[];
+}): Pan115NetdiskSession {
+  pruneExpiredSessions();
+  const now = Date.now();
+  const id = buildPan115NetdiskId({ shareUrl: input.shareUrl, passcode: input.passcode });
+  const session: Pan115NetdiskSession = {
+    id,
+    provider: '115',
+    title: input.title,
+    shareUrl: input.shareUrl,
+    passcode: input.passcode,
+    files: input.files,
+    createdAt: now,
+    expiresAt: now + TTL_MS,
+  };
+  sessionStore.set(id, session);
+  return session;
+}
+
+export function getPan115NetdiskSession(id: string): Pan115NetdiskSession | null {
+  pruneExpiredSessions();
+  const session = sessionStore.get(id);
+  if (!session) return null;
+  if (session.expiresAt <= Date.now()) {
+    sessionStore.delete(id);
+    return null;
+  }
+  return session;
+}
+
+export function refreshPan115NetdiskSession(id: string): Pan115NetdiskSession | null {
+  const session = getPan115NetdiskSession(id);
+  if (!session) return null;
+  session.expiresAt = Date.now() + TTL_MS;
+  sessionStore.set(id, session);
+  return session;
+}