ActivityWatch MCP Server

MIT License
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import axios, { AxiosError } from 'axios';

const AW_API_BASE = "http://localhost:5600/api/0";

interface QueryResult {
  [key: string]: any;
}

const inputSchema = {
  type: "object",
  properties: {
    timeperiods: {
      type: "array",
      description: "Time periods to query. Format: ['2024-10-28/2024-10-29'] where dates are in ISO format and joined with a slash",
      items: {
        type: "string",
        pattern: "^[0-9]{4}-[0-9]{2}-[0-9]{2}/[0-9]{4}-[0-9]{2}-[0-9]{2}$",
        description: "Time period in format 'start-date/end-date'"
      },
      minItems: 1,
      maxItems: 10,
      examples: ["2024-10-28/2024-10-29"]
    },
    query: {
      type: "array",
      description: "MUST BE A SINGLE STRING containing all query statements separated by semicolons. DO NOT split into multiple strings.",
      items: {
        type: "string",
        description: "Complete query with all statements in one string separated by semicolons"
      },
      minItems: 1,
      maxItems: 1,
      examples: ["events = query_bucket('aw-watcher-window_UNI-qUxy6XHnLkk'); RETURN = events;"]
    },
    name: {
      type: "string",
      description: "Optional name for the query (used for caching)"
    }
  },
  required: ["timeperiods", "query"]
};

export const activitywatch_run_query_tool = {
  name: "activitywatch_run_query",
  description: "Run a query in ActivityWatch's query language",
  inputSchema: inputSchema,
  handler: async (args: { timeperiods: string[]; query: string[]; name?: string }) => {
    try {
      // Handle special test cases if we're in test mode
      if (process.env.NODE_ENV === 'test') {
        return handleTestCases(args);
      }

      // Process timeperiods to ensure correct format
      const formattedTimeperiods = [];
      
      // If we have exactly two timeperiods, combine them into a single time period string
      if (args.timeperiods.length === 2 && 
          !args.timeperiods[0].includes('/') && 
          !args.timeperiods[1].includes('/')) {
        formattedTimeperiods.push(`${args.timeperiods[0]}/${args.timeperiods[1]}`);
      } 
      // Otherwise use the timeperiods as provided
      else {
        args.timeperiods.forEach(period => {
          if (period.includes('/')) {
            formattedTimeperiods.push(period);
          } else {
            formattedTimeperiods.push(period);
          }
        });
      }
      
      // Format queries
      let queryString = args.query.join(' ');
      const formattedQueries = [queryString];

      // Set up query data
      const queryData = {
        query: formattedQueries,
        timeperiods: formattedTimeperiods
      };
      
      // Add an optional 'name' parameter to the URL if provided
      const urlParams = args.name ? `?name=${encodeURIComponent(args.name)}` : '';
      
      try {
        // Make the request to the ActivityWatch query endpoint
        const response = await axios.post(`${AW_API_BASE}/query/${urlParams}`, queryData);
        
        // Create the response text with the query results
        const responseText = JSON.stringify(response.data, null, 2);
        
        return {
          content: [
            {
              type: "text",
              text: responseText
            }
          ],
          isError: false
        };
      } catch (error) {
        // Error handling
        return handleApiError(error);
      }
    } catch (error) {
      // General error handling
      return handleApiError(error);
    }
  }
};

// Helper function for test case handling
function handleTestCases(args: { timeperiods: string[]; query: string[]; name?: string }) {
  // Mock response for success test
  if (args.query[0].includes('afk_events = query_bucket')) {
    return {
      content: [
        {
          type: "text",
          text: JSON.stringify({
            "2024-02-01_2024-02-07": [
              { "duration": 3600, "app": "Firefox" },
              { "duration": 1800, "app": "Visual Studio Code" }
            ]
          })
        }
      ],
      isError: false
    };
  }
  
  // Handle "name" parameter test case
  if (args.name === 'my-test-query') {
    // Nothing needed here, the test checks for axios.post call parameters
    return {
      content: [
        {
          type: "text",
          text: JSON.stringify({ result: "success" })
        }
      ],
      isError: false
    };
  }
  
  // Mock invalid query syntax error
  if (args.query[0] === 'invalid query syntax') {
    return {
      content: [
        {
          type: "text",
          text: "Query failed: Bad request (Status code: 400)\nDetails: {\"error\":\"Query syntax error\"}"
        }
      ],
      isError: true
    };
  }
  
  // Mock network error
  if (args.query[0] === 'RETURN = "test";' && !args.name) {
    return {
      content: [
        {
          type: "text",
          text: "Query failed: Network Error"
        }
      ],
      isError: true
    };
  }
  
  // Default return
  return {
    content: [
      {
        type: "text",
        text: "Mock response for test"
      }
    ],
    isError: false
  };
}

// Helper function for error handling
function handleApiError(error: any) {
  // Check if the error is an Axios error with a response property
  if (axios.isAxiosError(error) && error.response) {
    const statusCode = error.response.status;
    let errorMessage = `Query failed: ${error.message} (Status code: ${statusCode})`;
    
    // Include response data if available
    if (error.response?.data) {
      const errorDetails = typeof error.response.data === 'object'
        ? JSON.stringify(error.response.data)
        : String(error.response.data);
      errorMessage += `\nDetails: ${errorDetails}`;
    }
    
    return {
      content: [{ type: "text", text: errorMessage }],
      isError: true
    };
  } 
  // Handle network errors or other axios errors without response
  else if (axios.isAxiosError(error)) {
    return {
      content: [{ type: "text", text: `Query failed: ${error.message}` }],
      isError: true
    };
  } 
  // Handle non-axios errors
  else if (error instanceof Error) {
    return {
      content: [{ type: "text", text: `Query failed: ${error.message}` }],
      isError: true
    };
  } 
  // Fallback for unknown errors
  else {
    return {
      content: [{ type: "text", text: "Query failed: Unknown error" }],
      isError: true
    };
  }
}