quran-mcp-server

Instructions

Implementation Reference

• src/handlers/resources.ts:213-248 (handler)

  The primary handler function that executes the 'chapter-reciters' tool logic. It validates the input arguments using the schema, calls the audio service, formats the response, and handles errors.

  /**
   * Handler for the chapter-reciters tool
   */
  export async function handleChapterReciters(args: any) {
    try {
      // Validate arguments
      const validatedArgs = chapterRecitersSchema.parse(args);
      
      // Call the service
      const result = await audioService.listChapterReciters(validatedArgs);
      
      // Log the response in verbose mode
      verboseLog('response', {
        tool: 'chapter-reciters',
        result
      });
      
      return {
        content: [
          {
            type: "text",
            text: JSON.stringify(result, null, 2)
          }
        ]
      };
    } catch (error) {
      verboseLog('error', {
        tool: 'chapter-reciters',
        error: error instanceof Error ? error.message : String(error)
      });
      
      // Use the standardized error response utility
      const { createErrorResponse } = require('../utils/error-handler');
      return createErrorResponse(error, 'chapter-reciters');
    }
  }

• src/schemas/audio.ts:44-50 (schema)

  Zod schema for validating input parameters to the 'chapter-reciters' tool, specifically an optional language parameter.

  /**
   * Schema for chapter-reciters
   */
  export const chapterRecitersSchema = z.object({
    language: z.string().optional().describe("Name of reciters in specific language"),
  });

• src/server.ts:221-225 (registration)

  Registration of the 'chapter-reciters' tool in the MCP server's listTools response, defining its name, description, and input schema.

    name: ApiTools.chapter_reciters,
    description: "List of Chapter Reciters",
    inputSchema: zodToJsonSchema(audioSchemas.chapterReciters),
  },
  {

• src/server.ts:303-304 (registration)

  Dispatch/registration of the handler function for the 'chapter-reciters' tool in the MCP callTool request handler switch statement.

  case ApiTools.chapter_reciters:
    return await handleChapterReciters(request.params.arguments);

• src/services/audio-service.ts:40-129 (helper)

  Core service method implementing the logic for fetching chapter reciters: API request, caching, fallback to mock data on errors.

  async listChapterReciters(params: z.infer<typeof chapterRecitersSchema>): Promise<ChapterRecitersResponse> {
    try {
      // Validate parameters
      const validatedParams = chapterRecitersSchema.parse(params);
      
      // Check cache first
      const now = Date.now();
      if (this.chapterRecitersCache && (now - this.chapterRecitersCacheTimestamp < CACHE_DURATION_MS)) {
        verboseLog('response', {
          method: 'listChapterReciters',
          source: 'cache',
          age: `${(now - this.chapterRecitersCacheTimestamp) / 1000} seconds`
        });
        
        return {
          success: true,
          message: "chapter-reciters executed successfully (from cache)",
          data: this.chapterRecitersCache
        };
      }
      
      try {
        // Make request to Quran.com API
        const url = `${API_BASE_URL}/resources/chapter_reciters`;
        const response = await makeApiRequest(url, {
          language: validatedParams.language
        });
        
        verboseLog('response', {
          method: 'listChapterReciters',
          source: 'api',
          dataSize: JSON.stringify(response).length
        });
        
        // Update cache
        this.chapterRecitersCache = response;
        this.chapterRecitersCacheTimestamp = now;
        
        return {
          success: true,
          message: "chapter-reciters executed successfully",
          data: response
        };
      } catch (axiosError) {
        verboseLog('error', {
          method: 'listChapterReciters',
          error: axiosError instanceof Error ? axiosError.message : String(axiosError)
        });
        
        // If the API call fails, return mock data
        verboseLog('response', {
          method: 'listChapterReciters',
          source: 'mock',
          reason: 'API unavailable'
        });
        
        const mockData = this.getChapterRecitersMockData();
        
        return {
          success: true,
          message: "chapter-reciters executed with mock data (API unavailable)",
          data: mockData
        };
      }
    } catch (error) {
      verboseLog('error', {
        method: 'listChapterReciters',
        error: error instanceof Error ? error.message : String(error)
      });
      
      if (error instanceof z.ZodError) {
        throw new ApiError(`Validation error: ${error.errors.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`, 400);
      }
      
      // Return mock data as a fallback for any error
      verboseLog('response', {
        method: 'listChapterReciters',
        source: 'mock',
        reason: 'error occurred'
      });
      
      const mockData = this.getChapterRecitersMockData();
      
      return {
        success: true,
        message: "chapter-reciters executed with mock data (error occurred)",
        data: mockData
      };
    }
  }