feat: implement QuestionBank CRUD with pagination and template query

- Add pagination support to findAll (page, limit query params) - Add findByTemplateId method to service - Add GET /by-template/:templateId endpoint to controller - Service already includes CRUD for QuestionBank and QuestionBankItem
2026-04-23 17:19:11 +08:00
commit 0a9588abb7
492 changed files with 112453 additions and 0 deletions
@@ -0,0 +1,44 @@
+export const DEFAULT_CHUNK_SIZE = 200;
+export const MIN_CHUNK_SIZE = 50;
+export const MAX_CHUNK_SIZE = 8191;
+export const DEFAULT_CHUNK_OVERLAP = 40;
+export const MIN_CHUNK_OVERLAP = 25;
+export const DEFAULT_MAX_OVERLAP_RATIO = 0.5;
+
+export const DEFAULT_VECTOR_DIMENSIONS = 1536;
+
+// File size limit (バイト)
+export const MAX_FILE_SIZE = 100 * 1024 * 1024; // 100MB
+
+export const DEFAULT_MAX_BATCH_SIZE = 2048;
+
+// Supported languages
+const SUPPORTED_LANGUAGES = ['zh', 'en', 'ja'] as const;
+
+/**
+ * Get the default language from the environment variable.
+ * Fallback to 'en' (English) if not set or invalid.
+ */
+function getDefaultLanguage(): (typeof SUPPORTED_LANGUAGES)[number] {
+  const envValue = process.env.DEFAULT_LANGUAGE?.toLowerCase();
+
+  // Validate: must be one of supported languages
+  if (
+    envValue &&
+    SUPPORTED_LANGUAGES.includes(
+      envValue as (typeof SUPPORTED_LANGUAGES)[number],
+    )
+  ) {
+    return envValue as (typeof SUPPORTED_LANGUAGES)[number];
+  }
+
+  // Fallback to English if not set or invalid
+  return 'en';
+}
+
+// Default language - read from env, fallback to English
+export const DEFAULT_LANGUAGE = getDefaultLanguage();
+export const DEFAULT_LANGUAGE_FALLBACK = 'en';
+
+// システム全体の共通テナントID（シードデータetc.で使用）
+export const GLOBAL_TENANT_ID = '00000000-0000-0000-0000-000000000000';
@@ -0,0 +1,64 @@
+export const DOC_EXTENSIONS = [
+  'pdf',
+  'doc',
+  'docx',
+  'xls',
+  'xlsx',
+  'ppt',
+  'pptx',
+  'rtf',
+  'csv',
+  'txt',
+  'md',
+  'html',
+  'json',
+  'xml',
+  'odt',
+  'ods',
+  'odp',
+];
+export const CODE_EXTENSIONS = [
+  'js',
+  'jsx',
+  'ts',
+  'tsx',
+  'css',
+  'py',
+  'java',
+  'sql',
+  'cpp',
+  'h',
+  'go',
+  'rs',
+  'php',
+  'rb',
+];
+export const IMAGE_EXTENSIONS = [
+  'jpg',
+  'jpeg',
+  'png',
+  'gif',
+  'bmp',
+  'webp',
+  'tiff',
+];
+export const IMAGE_MIME_TYPES = [
+  'image/jpeg',
+  'image/png',
+  'image/gif',
+  'image/bmp',
+  'image/webp',
+  'image/tiff',
+];
+
+export const ALL_ALLOWED_EXTENSIONS = [
+  ...DOC_EXTENSIONS,
+  ...CODE_EXTENSIONS,
+  ...IMAGE_EXTENSIONS,
+];
+
+export const isAllowedByExtension = (filename: string): boolean => {
+  const ext = filename.toLowerCase().split('.').pop();
+  if (!ext) return false;
+  return ALL_ALLOWED_EXTENSIONS.includes(ext);
+};
@@ -0,0 +1,48 @@
+/**
+ * Safely parses JSON from a string, handling markdown code blocks and leading/trailing text.
+ */
+export function safeParseJson<T = any>(text: string): T | null {
+  if (!text) return null;
+
+  let jsonStr = text.trim();
+
+  // 1. Try to extract JSON from markdown code blocks if they exist
+  // Matches ```json ... ``` or just ``` ... ```
+  const codeBlockRegex = /```(?:json)?\s*([\s\S]*?)\s*```/i;
+  const match = jsonStr.match(codeBlockRegex);
+
+  if (match && match[1]) {
+    jsonStr = match[1].trim();
+  } else {
+    // 2. If no markdown block, try to find the start and end of JSON characters
+    // This handles cases where the AI adds introductory or concluding text outside the block
+    const firstOpenBrace = jsonStr.indexOf('{');
+    const firstOpenBracket = jsonStr.indexOf('[');
+    
+    let startIndex = -1;
+    if (firstOpenBrace !== -1 && (firstOpenBracket === -1 || firstOpenBrace < firstOpenBracket)) {
+      startIndex = firstOpenBrace;
+    } else if (firstOpenBracket !== -1) {
+      startIndex = firstOpenBracket;
+    }
+
+    if (startIndex !== -1) {
+      const lastCloseBrace = jsonStr.lastIndexOf('}');
+      const lastCloseBracket = jsonStr.lastIndexOf(']');
+      const endIndex = Math.max(lastCloseBrace, lastCloseBracket);
+      
+      if (endIndex !== -1 && endIndex > startIndex) {
+        jsonStr = jsonStr.substring(startIndex, endIndex + 1);
+      }
+    }
+  }
+
+  try {
+    return JSON.parse(jsonStr) as T;
+  } catch (error) {
+    console.error('[safeParseJson] Failed to parse JSON:', error);
+    console.error('[safeParseJson] Original text:', text);
+    console.error('[safeParseJson] Extracted string:', jsonStr);
+    return null;
+  }
+}