describe('MCP Tools Race Condition Fix', () => {
  describe('fetchAndSaveTools timeout behavior', () => {
    it('should demonstrate the race condition with 5000ms timeout', (done) => {
      const serverDisconnectTime = 1000;
      const toolsFetchTimeout = 5000;
      
      let serverDisconnected = false;
      
      setTimeout(() => {
        serverDisconnected = true;
      }, serverDisconnectTime);
      
      setTimeout(() => {
        expect(serverDisconnected).toBe(true);
        done();
      }, toolsFetchTimeout);
    });

    it('should fix the race condition with 1000ms timeout', (done) => {
      const serverDisconnectTime = 2000;
      const fixedToolsFetchTimeout = 1000;
      
      const serverConnected = true;
      let serverDisconnected = false;
      let toolsFetchCompleted = false;
      
      setTimeout(() => {
        serverDisconnected = true;
      }, serverDisconnectTime);
      
      setTimeout(() => {
        if (!serverDisconnected) {
          toolsFetchCompleted = true;
        }
      }, fixedToolsFetchTimeout);
      
      setTimeout(() => {
        expect(toolsFetchCompleted).toBe(true);
        expect(serverDisconnected).toBe(false);
        done();
      }, fixedToolsFetchTimeout + 100);
    });
  });

  describe('connection state checking logic', () => {
    it('should check connection state before attempting tool fetch', () => {
      const serversMap = new Map();
      const serverId = 'test-server';
      
      const checkConnectionBeforeFetch = (id: string): boolean => {
        return serversMap.has(id);
      };
      
      expect(checkConnectionBeforeFetch(serverId)).toBe(false);
      
      serversMap.set(serverId, { connected: true });
      expect(checkConnectionBeforeFetch(serverId)).toBe(true);
      
      serversMap.delete(serverId);
      expect(checkConnectionBeforeFetch(serverId)).toBe(false);
    });

    it('should implement proper double-check for server connection', () => {
      const serversMap = new Map();
      const serverId = 'test-server';
      const logMessages: string[] = [];
      
      const mockLogger = {
        warn: (msg: string) => logMessages.push(msg)
      };
      
      const fetchAndSaveToolsLogic = (id: string): boolean => {
        if (!serversMap.has(id)) {
          mockLogger.warn(`Server ${id} was disconnected before tools could be fetched`);
          return false;
        }
        
        if (serversMap.has(id)) {
          return true;
        }
        
        return false;
      };
      
      const result1 = fetchAndSaveToolsLogic(serverId);
      expect(result1).toBe(false);
      expect(logMessages).toContain('Server test-server was disconnected before tools could be fetched');
      
      serversMap.set(serverId, { connected: true });
      const result2 = fetchAndSaveToolsLogic(serverId);
      expect(result2).toBe(true);
    });
  });

  describe('timeout value validation', () => {
    it('should verify that 1000ms is sufficient for tool fetching', () => {
      const reducedTimeout = 1000;
      const originalTimeout = 5000;
      
      expect(reducedTimeout).toBeLessThan(originalTimeout);
      expect(reducedTimeout).toBeGreaterThan(0);
      expect(reducedTimeout).toBe(1000);
      
      const timeoutRatio = reducedTimeout / originalTimeout;
      expect(timeoutRatio).toBe(0.2);
    });
  });
});