Slack MCP

import type { SlackClient } from '../slack-client.js'; import type { SlackTool } from './index.js'; function getPreviousWorkday(): { oldest: string; latest: string } { const now = new Date(); const today = now.getDay(); // 0 = Sunday, 1 = Monday, ..., 6 = Saturday let daysBack: number; // Calculate how many days back to get the previous workday switch (today) { case 1: // Monday -> get Friday (3 days back) daysBack = 3; break; case 0: // Sunday -> get Friday (2 days back) daysBack = 2; break; case 6: // Saturday -> get Friday (1 day back) daysBack = 1; break; default: // Tuesday-Friday -> get previous day (1 day back) daysBack = 1; break; } const previousWorkday = new Date(now); previousWorkday.setDate(now.getDate() - daysBack); // Set to start of that day (00:00:00) const startOfDay = new Date(previousWorkday); startOfDay.setHours(0, 0, 0, 0); // Set to end of that day (23:59:59) const endOfDay = new Date(previousWorkday); endOfDay.setHours(23, 59, 59, 999); return { oldest: (startOfDay.getTime() / 1000).toString(), latest: (endOfDay.getTime() / 1000).toString() }; } function getWorkdayName(daysBack: number): string { const days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']; const now = new Date(); const targetDate = new Date(now); targetDate.setDate(now.getDate() - daysBack); return days[targetDate.getDay()]; } export function readFrontendLadisaiTool(slackClient: SlackClient, defaultUserId?: string): SlackTool { const hasDefaultUserId = !!defaultUserId; return { name: 'read_frontend_ladisai_messages', description: hasDefaultUserId ? `Read latest messages from specified user (${defaultUserId}) in the frontend-ladisai channel` : 'Read latest messages from specified user in the frontend-ladisai channel', inputSchema: { type: 'object', properties: { ...(hasDefaultUserId ? {} : { user_id: { type: 'string', description: 'User ID to filter messages for (e.g., U047F3P6PUG)', } }), limit: { type: 'number', description: 'Number of messages to retrieve from channel for filtering (default 20)', default: 20, }, max_results: { type: 'number', description: 'Maximum number of user messages to return (default 5)', default: 5, }, include_user_info: { type: 'boolean', description: 'Include user information for messages (default true)', default: true, }, manual_date: { type: 'string', description: 'Manual date override in YYYY-MM-DD format (optional)', }, all_time: { type: 'boolean', description: 'Search all time instead of just previous workday (default false)', default: false, }, }, ...(hasDefaultUserId ? {} : { required: ['user_id'] }), }, handler: async (args) => { const { user_id, limit = 100, max_results = 5, include_user_info = true, manual_date, all_time = false } = args; // Use provided user_id or default const targetUserId = user_id || defaultUserId; if (!targetUserId) { throw new Error('User ID is required either as parameter or default configuration'); } // Hard-coded channel ID for frontend-ladisai const FRONTEND_LADISAI_CHANNEL_ID = 'CPQ1Y03HC'; let oldest: string | undefined, latest: string | undefined, targetDateName: string; if (all_time) { // Search all time oldest = undefined; latest = undefined; targetDateName = 'all time'; } else if (manual_date) { // Manual date override const targetDate = new Date(manual_date); const startOfDay = new Date(targetDate); startOfDay.setHours(0, 0, 0, 0); const endOfDay = new Date(targetDate); endOfDay.setHours(23, 59, 59, 999); oldest = (startOfDay.getTime() / 1000).toString(); latest = (endOfDay.getTime() / 1000).toString(); targetDateName = targetDate.toLocaleDateString(); } else { // Auto-calculate previous workday const timeRange = getPreviousWorkday(); oldest = timeRange.oldest; latest = timeRange.latest; const today = new Date().getDay(); const daysBack = today === 1 ? 3 : (today === 0 ? 2 : (today === 6 ? 1 : 1)); targetDateName = getWorkdayName(daysBack); } try { const response = await slackClient.getChannelHistory({ channel: FRONTEND_LADISAI_CHANNEL_ID, limit, oldest, latest, }); if (!response.ok) { throw new Error(`Failed to get frontend-ladisai messages: ${response.error}`); } // Filter messages from target user only const userMessages = response.messages?.filter(message => message.user === targetUserId ) || []; // Sort by timestamp (newest first) and limit results const sortedMessages = userMessages .sort((a, b) => parseFloat(b.ts || '0') - parseFloat(a.ts || '0')) .slice(0, max_results); const processedMessages = sortedMessages.map(message => { const baseMessage = { ts: message.ts, user: message.user, text: message.text, type: message.type, subtype: message.subtype, thread_ts: message.thread_ts, reply_count: message.reply_count, // Convert timestamp to readable date readable_time: message.ts ? new Date(parseFloat(message.ts) * 1000).toLocaleString() : 'Unknown time', // No reactions included as per user request }; return baseMessage; }); // Get user info if requested let enrichedMessages = processedMessages; if (include_user_info && processedMessages.length > 0) { try { const userInfo = await slackClient.getUserInfo(targetUserId); const userDetails = userInfo.ok ? { real_name: userInfo.user?.real_name, display_name: userInfo.user?.profile?.display_name, name: userInfo.user?.name, } : null; enrichedMessages = processedMessages.map(message => ({ ...message, user_info: userDetails, })); } catch (error) { console.error(`Failed to get user info for ${targetUserId}:`, error); } } return { success: true, channel: 'frontend-ladisai', channel_id: FRONTEND_LADISAI_CHANNEL_ID, target_user: `${targetUserId}`, target_date: targetDateName, time_range: oldest && latest ? { oldest: new Date(parseFloat(oldest) * 1000).toLocaleString(), latest: new Date(parseFloat(latest) * 1000).toLocaleString(), } : 'All time', messages: enrichedMessages, total: enrichedMessages.length, total_channel_messages: response.messages?.length || 0, message: `Successfully retrieved ${enrichedMessages.length} messages from user ${targetUserId} in frontend-ladisai for ${targetDateName}`, }; } catch (error) { return { success: false, error: error instanceof Error ? error.message : String(error), channel: 'frontend-ladisai', channel_id: FRONTEND_LADISAI_CHANNEL_ID, target_user: `${targetUserId}`, target_date: targetDateName, }; } }, }; }