Add Feishu channel adapter with webhook and send path

src/channels/feishu/adapter.test.ts

@@ -0,0 +1,156 @@
+import { describe, expect, it, vi, beforeEach } from 'vitest';
+import type { IncomingMessage, ServerResponse } from 'http';
+
+import { FeishuAdapter } from './adapter.js';
+
+const mockFetch = vi.fn();
+vi.stubGlobal('fetch', mockFetch);
+
+function jsonResponse(body: unknown, status = 200): Response {
+  return {
+    ok: status >= 200 && status < 300,
+    status,
+    json: async () => body,
+    text: async () => JSON.stringify(body),
+  } as Response;
+}
+
+function mockReq(body: string): IncomingMessage {
+  const req = {
+    headers: {},
+    on(event: string, handler: (...args: unknown[]) => void) {
+      if (event === 'data') {
+        handler(Buffer.from(body, 'utf8'));
+      }
+      if (event === 'end') {
+        handler();
+      }
+      return this;
+    },
+    off: () => req,
+    destroy: () => undefined,
+  } as unknown as IncomingMessage;
+  return req;
+}
+
+function mockRes() {
+  const state = { statusCode: 0, body: '' };
+  const res = {
+    writeHead: (code: number) => {
+      state.statusCode = code;
+    },
+    end: (chunk?: string) => {
+      state.body = chunk ?? '';
+    },
+  } as unknown as ServerResponse;
+  return { res, state };
+}
+
+describe('FeishuAdapter', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    mockFetch.mockReset();
+  });
+
+  it('has name feishu and starts disconnected', () => {
+    const adapter = new FeishuAdapter({
+      appId: 'app-id',
+      appSecret: 'app-secret',
+    });
+    expect(adapter.name).toBe('feishu');
+    expect(adapter.status).toBe('disconnected');
+  });
+
+  it('send fetches token and posts message', async () => {
+    const adapter = new FeishuAdapter({
+      appId: 'app-id',
+      appSecret: 'app-secret',
+    });
+    await adapter.connect();
+
+    mockFetch.mockImplementation(async (url: string) => {
+      if (url.includes('/tenant_access_token/internal')) {
+        return jsonResponse({ code: 0, tenant_access_token: 'tenant-token', expire: 7200 });
+      }
+      if (url.includes('/im/v1/messages?receive_id_type=chat_id')) {
+        return jsonResponse({ code: 0, msg: 'ok' });
+      }
+      throw new Error(`Unexpected fetch URL: ${url}`);
+    });
+
+    await adapter.send('oc_xxx_chat', { text: 'hello feishu' });
+    expect(mockFetch).toHaveBeenCalledTimes(2);
+  });
+
+  it('handleRequest returns challenge for url verification', async () => {
+    const adapter = new FeishuAdapter({
+      appId: 'app-id',
+      appSecret: 'app-secret',
+      webhookToken: 'verify-token',
+    });
+    const body = JSON.stringify({
+      type: 'url_verification',
+      challenge: 'challenge-token',
+    });
+    const req = mockReq(body);
+    const { res, state } = mockRes();
+
+    await adapter.handleRequest(req, res);
+    expect(state.statusCode).toBe(200);
+    expect(state.body).toContain('challenge-token');
+  });
+
+  it('handleEvent forwards text message with reply metadata', async () => {
+    const adapter = new FeishuAdapter({
+      appId: 'app-id',
+      appSecret: 'app-secret',
+      webhookToken: 'verify-token',
+      requireMention: false,
+    });
+    const inbound: Array<{ channel: string; senderId: string; text: string }> = [];
+    adapter.onMessage((msg) => inbound.push({ channel: msg.channel, senderId: msg.senderId, text: msg.text }));
+
+    await adapter.handleEvent({
+      header: { event_type: 'im.message.receive_v1', token: 'verify-token' },
+      event: {
+        sender: { sender_id: { open_id: 'ou_123' } },
+        message: {
+          message_id: 'om_1',
+          chat_id: 'oc_123',
+          chat_type: 'group',
+          message_type: 'text',
+          content: JSON.stringify({ text: 'ping' }),
+        },
+      },
+    });
+
+    expect(inbound).toEqual([{ channel: 'feishu', senderId: 'ou_123', text: 'ping' }]);
+  });
+
+  it('enforces webhook token on event ingress', async () => {
+    const adapter = new FeishuAdapter({
+      appId: 'app-id',
+      appSecret: 'app-secret',
+      webhookToken: 'verify-token',
+    });
+
+    const body = JSON.stringify({
+      header: { event_type: 'im.message.receive_v1', token: 'wrong-token' },
+      event: {
+        sender: { sender_id: { open_id: 'ou_123' } },
+        message: {
+          message_id: 'om_1',
+          chat_id: 'oc_123',
+          chat_type: 'group',
+          message_type: 'text',
+          content: JSON.stringify({ text: 'ping' }),
+        },
+      },
+    });
+    const req = mockReq(body);
+    const { res, state } = mockRes();
+
+    await adapter.handleRequest(req, res);
+    expect(state.statusCode).toBe(401);
+  });
+});

src/channels/feishu/adapter.ts

@@ -0,0 +1,269 @@
+import type { IncomingMessage, ServerResponse } from 'http';
+
+import type {
+  InboundMessage,
+  OutboundMessage,
+  ChannelAdapter,
+  ChannelStatus,
+} from '../types.js';
+import { shouldIgnoreForMissingMention, splitMessage } from '../utils.js';
+import { readRequestBody } from '../../utils/httpBody.js';
+
+export interface FeishuAdapterConfig {
+  appId: string;
+  appSecret: string;
+  webhookToken?: string;
+  allowedChatIds?: string[];
+  requireMention?: boolean;
+  mentionName?: string;
+  endpoint?: string;
+}
+
+interface FeishuTenantTokenResponse {
+  code?: number;
+  tenant_access_token?: string;
+  expire?: number;
+  msg?: string;
+}
+
+interface FeishuMessageSendResponse {
+  code?: number;
+  msg?: string;
+}
+
+interface FeishuEventEnvelope {
+  type?: string;
+  challenge?: string;
+  header?: {
+    event_type?: string;
+    token?: string;
+  };
+  event?: {
+    sender?: {
+      sender_id?: {
+        open_id?: string;
+        user_id?: string;
+      };
+      sender_type?: string;
+    };
+    message?: {
+      message_id?: string;
+      chat_id?: string;
+      chat_type?: string;
+      message_type?: string;
+      content?: string;
+    };
+  };
+}
+
+const MAX_MESSAGE_LENGTH = 3500;
+
+export class FeishuAdapter implements ChannelAdapter {
+  readonly name = 'feishu';
+  private _status: ChannelStatus = 'disconnected';
+  private messageHandler?: (msg: InboundMessage) => void;
+  private tokenCache: { token: string; expiresAt: number } | null = null;
+
+  constructor(private readonly config: FeishuAdapterConfig) {}
+
+  get status(): ChannelStatus {
+    return this._status;
+  }
+
+  onMessage(handler: (msg: InboundMessage) => void): void {
+    this.messageHandler = handler;
+  }
+
+  async connect(): Promise<void> {
+    this._status = 'connected';
+  }
+
+  async disconnect(): Promise<void> {
+    this._status = 'disconnected';
+  }
+
+  async send(peerId: string, message: OutboundMessage): Promise<void> {
+    if (this._status !== 'connected') {
+      throw new Error('Feishu adapter not connected');
+    }
+
+    const text = message.text.trim();
+    if (!text) {
+      return;
+    }
+
+    const chunks = text.length > MAX_MESSAGE_LENGTH ? splitMessage(text, MAX_MESSAGE_LENGTH) : [text];
+    for (const chunk of chunks) {
+      await this.sendMessage(peerId, chunk);
+    }
+  }
+
+  async handleRequest(req: IncomingMessage, res: ServerResponse): Promise<void> {
+    let body = '';
+    try {
+      body = await readRequestBody(req, { maxBytes: 1_048_576 });
+    } catch {
+      res.writeHead(400, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ error: 'Invalid request body' }));
+      return;
+    }
+
+    let payload: FeishuEventEnvelope;
+    try {
+      payload = JSON.parse(body) as FeishuEventEnvelope;
+    } catch {
+      res.writeHead(400, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ error: 'Invalid JSON' }));
+      return;
+    }
+
+    // URL verification flow
+    if (payload.type === 'url_verification' && payload.challenge) {
+      res.writeHead(200, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ challenge: payload.challenge }));
+      return;
+    }
+
+    if (this.config.webhookToken && payload.header?.token !== this.config.webhookToken) {
+      res.writeHead(401, { 'Content-Type': 'application/json' });
+      res.end(JSON.stringify({ error: 'Invalid webhook token' }));
+      return;
+    }
+
+    await this.handleEvent(payload);
+    res.writeHead(202, { 'Content-Type': 'application/json' });
+    res.end(JSON.stringify({ accepted: true }));
+  }
+
+  async handleEvent(payload: FeishuEventEnvelope): Promise<void> {
+    if (!this.messageHandler) {
+      return;
+    }
+    if (payload.header?.event_type !== 'im.message.receive_v1') {
+      return;
+    }
+
+    const message = payload.event?.message;
+    if (!message || message.message_type !== 'text') {
+      return;
+    }
+    const chatId = message.chat_id?.trim();
+    if (!chatId) {
+      return;
+    }
+    if (this.config.allowedChatIds && this.config.allowedChatIds.length > 0) {
+      if (!this.config.allowedChatIds.includes(chatId)) {
+        return;
+      }
+    }
+
+    const senderId = payload.event?.sender?.sender_id?.open_id?.trim()
+      || payload.event?.sender?.sender_id?.user_id?.trim();
+    if (!senderId) {
+      return;
+    }
+
+    const text = parseFeishuText(message.content);
+    if (!text) {
+      return;
+    }
+
+    const mentionName = this.config.mentionName ?? 'flynn';
+    const mentionRegex = new RegExp(`(?:^|\\s)@?${escapeRegex(mentionName)}(?:\\b|:)`, 'i');
+    const isDm = (message.chat_type ?? '').toLowerCase() === 'p2p';
+    const mentionsBot = mentionRegex.test(text);
+    if (shouldIgnoreForMissingMention({
+      requireMention: this.config.requireMention,
+      defaultRequireMention: true,
+      mentionsBot: isDm || mentionsBot,
+    })) {
+      return;
+    }
+
+    const cleaned = text.replace(new RegExp(`^\\s*@?${escapeRegex(mentionName)}(?:\\b|:)\\s*`, 'i'), '').trim();
+    if (!cleaned) {
+      return;
+    }
+
+    this.messageHandler({
+      id: message.message_id ?? `feishu-${Date.now()}`,
+      channel: 'feishu',
+      senderId,
+      text: cleaned,
+      timestamp: Date.now(),
+      metadata: {
+        chatId,
+        chatType: message.chat_type,
+        replyPeerId: chatId,
+      },
+    });
+  }
+
+  private async sendMessage(chatId: string, text: string): Promise<void> {
+    const token = await this.getTenantAccessToken();
+    const endpoint = `${this.baseEndpoint()}/open-apis/im/v1/messages?receive_id_type=chat_id`;
+    const response = await fetch(endpoint, {
+      method: 'POST',
+      headers: {
+        Authorization: `Bearer ${token}`,
+        'Content-Type': 'application/json; charset=utf-8',
+      },
+      body: JSON.stringify({
+        receive_id: chatId,
+        msg_type: 'text',
+        content: JSON.stringify({ text }),
+      }),
+    });
+    const payload = await response.json().catch(() => ({})) as FeishuMessageSendResponse;
+    if (!response.ok || payload.code !== 0) {
+      throw new Error(`Feishu send failed (${response.status}): ${payload.msg ?? 'unknown error'}`);
+    }
+  }
+
+  private async getTenantAccessToken(): Promise<string> {
+    const now = Date.now();
+    if (this.tokenCache && this.tokenCache.expiresAt > now + 30_000) {
+      return this.tokenCache.token;
+    }
+
+    const endpoint = `${this.baseEndpoint()}/open-apis/auth/v3/tenant_access_token/internal`;
+    const response = await fetch(endpoint, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json; charset=utf-8' },
+      body: JSON.stringify({
+        app_id: this.config.appId,
+        app_secret: this.config.appSecret,
+      }),
+    });
+    const payload = await response.json().catch(() => ({})) as FeishuTenantTokenResponse;
+    if (!response.ok || payload.code !== 0 || !payload.tenant_access_token) {
+      throw new Error(`Feishu auth failed (${response.status}): ${payload.msg ?? 'missing token'}`);
+    }
+    const expireSecs = typeof payload.expire === 'number' ? payload.expire : 3600;
+    this.tokenCache = {
+      token: payload.tenant_access_token,
+      expiresAt: now + expireSecs * 1000,
+    };
+    return payload.tenant_access_token;
+  }
+
+  private baseEndpoint(): string {
+    return (this.config.endpoint ?? 'https://open.feishu.cn').replace(/\/+$/, '');
+  }
+}
+
+function parseFeishuText(content: string | undefined): string {
+  if (!content) {
+    return '';
+  }
+  try {
+    const parsed = JSON.parse(content) as { text?: string };
+    return (parsed.text ?? '').trim();
+  } catch {
+    return '';
+  }
+}
+
+function escapeRegex(value: string): string {
+  return value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+}

src/channels/feishu/index.ts

@@ -0,0 +1 @@
+export { FeishuAdapter, type FeishuAdapterConfig } from './adapter.js';

src/channels/index.ts

@@ -22,4 +22,5 @@ export { TeamsAdapter, type TeamsAdapterConfig } from './teams/index.js';
 export { GoogleChatAdapter, type GoogleChatAdapterConfig } from './googleChat/index.js';
 export { BlueBubblesAdapter, type BlueBubblesAdapterConfig } from './bluebubbles/index.js';
 export { LineAdapter, type LineAdapterConfig } from './line/index.js';
+export { FeishuAdapter, type FeishuAdapterConfig } from './feishu/index.js';
 export { PairingManager, type PairingConfig, type PairingStore, type ApprovedSender } from './pairing.js';

src/config/schema.test.ts

@@ -608,6 +608,33 @@ describe('configSchema — line', () => {
   });
 });
 
+describe('configSchema — feishu', () => {
+  const minimalConfig = {
+    telegram: { bot_token: 'test', allowed_chat_ids: [1] },
+    models: { default: { provider: 'anthropic', model: 'claude-3' } },
+  };
+
+  it('accepts feishu config and defaults optional fields', () => {
+    const result = configSchema.parse({
+      ...minimalConfig,
+      feishu: {
+        app_id: 'cli_a1b2c3',
+        app_secret: 'secret',
+      },
+    });
+
+    expect(result.feishu).toBeDefined();
+    if (!result.feishu) {
+      throw new Error('Expected feishu config');
+    }
+    expect(result.feishu.app_id).toBe('cli_a1b2c3');
+    expect(result.feishu.app_secret).toBe('secret');
+    expect(result.feishu.allowed_chat_ids).toEqual([]);
+    expect(result.feishu.require_mention).toBe(true);
+    expect(result.feishu.mention_name).toBe('flynn');
+  });
+});
+
 describe('configSchema — whatsapp', () => {
   const minimalConfig = {
     telegram: { bot_token: 'test', allowed_chat_ids: [1] },

src/config/schema.ts

@@ -511,6 +511,16 @@ const lineSchema = z.object({
   mention_name: z.string().default('flynn'),
 }).optional();
 
+const feishuSchema = z.object({
+  app_id: z.string().min(1, 'Feishu app_id is required'),
+  app_secret: z.string().min(1, 'Feishu app_secret is required'),
+  webhook_token: z.string().optional(),
+  allowed_chat_ids: z.array(z.string()).default([]),
+  require_mention: z.boolean().default(true),
+  mention_name: z.string().default('flynn'),
+  endpoint: z.string().url('Feishu endpoint must be a valid URL').optional(),
+}).optional();
+
 const browserSchema = z.object({
   enabled: z.boolean().default(false),
   executable_path: z.string().optional(),
@@ -691,6 +701,7 @@ export const configSchema = z.object({
   google_chat: googleChatSchema,
   bluebubbles: bluebubblesSchema,
   line: lineSchema,
+  feishu: feishuSchema,
   server: serverSchema.default({}),
   models: modelsSchema,
   backends: backendsSchema.default({}),

src/daemon/channels.test.ts

@@ -24,6 +24,7 @@ describe('registerChannels', () => {
       setGoogleChatHandler: vi.fn(),
       setBlueBubblesHandler: vi.fn(),
       setLineHandler: vi.fn(),
+      setFeishuHandler: vi.fn(),
     };
 
     registerChannels({
@@ -57,6 +58,7 @@ describe('registerChannels', () => {
       setGoogleChatHandler: vi.fn(),
       setBlueBubblesHandler: vi.fn(),
       setLineHandler: vi.fn(),
+      setFeishuHandler: vi.fn(),
     };
 
     registerChannels({
@@ -70,4 +72,38 @@ describe('registerChannels', () => {
     expect(names).toContain('line');
     expect(gateway.setLineHandler).toHaveBeenCalledTimes(1);
   });
+
+  it('registers Feishu adapter when configured', () => {
+    const config = configSchema.parse({
+      telegram: { bot_token: 'test-token', allowed_chat_ids: [1] },
+      models: { default: { provider: 'anthropic', model: 'claude-3' } },
+      feishu: {
+        app_id: 'cli_a1b2c3',
+        app_secret: 'secret',
+        allowed_chat_ids: ['oc_123'],
+      },
+    });
+
+    const channelRegistry = new ChannelRegistry();
+    const gateway = {
+      setWebhookHandler: vi.fn(),
+      setGmailHandler: vi.fn(),
+      setTeamsHandler: vi.fn(),
+      setGoogleChatHandler: vi.fn(),
+      setBlueBubblesHandler: vi.fn(),
+      setLineHandler: vi.fn(),
+      setFeishuHandler: vi.fn(),
+    };
+
+    registerChannels({
+      config,
+      channelRegistry,
+      hookEngine: new HookEngine(config.hooks),
+      gateway: gateway as unknown as Parameters<typeof registerChannels>[0]['gateway'],
+    });
+
+    const names = channelRegistry.list().map((adapter) => adapter.name);
+    expect(names).toContain('feishu');
+    expect(gateway.setFeishuHandler).toHaveBeenCalledTimes(1);
+  });
 });

src/daemon/channels.ts

@@ -1,6 +1,6 @@
 import type { Config } from '../config/index.js';
 import type { HookEngine } from '../hooks/index.js';
-import { ChannelRegistry, TelegramAdapter, WebChatAdapter, DiscordAdapter, SlackAdapter, WhatsAppAdapter, MatrixAdapter, SignalAdapter, MattermostAdapter, TeamsAdapter, GoogleChatAdapter, BlueBubblesAdapter, LineAdapter, PairingManager } from '../channels/index.js';
+import { ChannelRegistry, TelegramAdapter, WebChatAdapter, DiscordAdapter, SlackAdapter, WhatsAppAdapter, MatrixAdapter, SignalAdapter, MattermostAdapter, TeamsAdapter, GoogleChatAdapter, BlueBubblesAdapter, LineAdapter, FeishuAdapter, PairingManager } from '../channels/index.js';
 import { CronScheduler, WebhookHandler, GmailWatcher } from '../automation/index.js';
 import type { GatewayServer } from '../gateway/index.js';
 
@@ -167,6 +167,21 @@ export function registerChannels(deps: ChannelsDeps): ChannelsResult {
     gateway.setLineHandler(lineAdapter);
   }
 
+  // Register Feishu adapter (if configured)
+  if (config.feishu) {
+    const feishuAdapter = new FeishuAdapter({
+      appId: config.feishu.app_id,
+      appSecret: config.feishu.app_secret,
+      webhookToken: config.feishu.webhook_token,
+      allowedChatIds: config.feishu.allowed_chat_ids.length > 0 ? config.feishu.allowed_chat_ids : undefined,
+      requireMention: config.feishu.require_mention,
+      mentionName: config.feishu.mention_name,
+      endpoint: config.feishu.endpoint,
+    });
+    channelRegistry.register(feishuAdapter);
+    gateway.setFeishuHandler(feishuAdapter);
+  }
+
   // Register WebChat adapter (wraps the gateway)
   const webChatAdapter = new WebChatAdapter({ gateway });
   channelRegistry.register(webChatAdapter);

src/gateway/handlers/services.test.ts

@@ -36,6 +36,7 @@ function makeBaseConfig(): Config {
     google_chat: undefined,
     bluebubbles: undefined,
     line: undefined,
+    feishu: undefined,
   } as unknown as Config;
 }
 
@@ -55,6 +56,7 @@ describe('discoverServices', () => {
       expect.objectContaining({ name: 'google_chat', status: 'not_configured' }),
       expect.objectContaining({ name: 'bluebubbles', status: 'not_configured' }),
       expect.objectContaining({ name: 'line', status: 'not_configured' }),
+      expect.objectContaining({ name: 'feishu', status: 'not_configured' }),
       expect.objectContaining({ name: 'cron', status: 'not_configured' }),
       expect.objectContaining({ name: 'mcp', status: 'not_configured' }),
       expect.objectContaining({ name: 'web_search', status: 'configured' }),

src/gateway/handlers/services.ts

@@ -59,6 +59,7 @@ export function discoverServices(
     { key: 'google_chat', name: 'google_chat', description: 'Google Chat bot' },
     { key: 'bluebubbles', name: 'bluebubbles', description: 'iMessage via BlueBubbles' },
     { key: 'line', name: 'line', description: 'LINE Messaging API bot' },
+    { key: 'feishu', name: 'feishu', description: 'Feishu/Lark bot' },
   ];
 
   for (const { key, name, description } of channelConfigs) {

src/gateway/server.ts

@@ -52,6 +52,7 @@ import type { TeamsAdapter } from '../channels/teams/adapter.js';
 import type { GoogleChatAdapter } from '../channels/googleChat/adapter.js';
 import type { BlueBubblesAdapter } from '../channels/bluebubbles/adapter.js';
 import type { LineAdapter } from '../channels/line/adapter.js';
+import type { FeishuAdapter } from '../channels/feishu/adapter.js';
 
 export interface GatewayServerConfig {
   port: number;
@@ -123,6 +124,8 @@ export interface GatewayServerConfig {
   blueBubblesHandler?: Pick<BlueBubblesAdapter, 'handleRequest'>;
   /** Optional LINE adapter for inbound webhook events. */
   lineHandler?: Pick<LineAdapter, 'handleRequest'>;
+  /** Optional Feishu adapter for inbound webhook events. */
+  feishuHandler?: Pick<FeishuAdapter, 'handleRequest'>;
 }
 
 export class GatewayServer {
@@ -733,6 +736,12 @@ export class GatewayServer {
       return;
     }
 
+    // Feishu events route — bypass gateway auth (Feishu webhook posts directly)
+    if (this.config.feishuHandler && req.method === 'POST' && req.url?.startsWith('/feishu/events')) {
+      await this.config.feishuHandler.handleRequest(req, res);
+      return;
+    }
+
     // Apply auth to HTTP requests when configured
     const authConfig = this.config.auth ?? {};
     if (this.config.authHttp !== false && authConfig.token) {
@@ -856,6 +865,11 @@ export class GatewayServer {
     this.config.lineHandler = handler;
   }
 
+  /** Set the Feishu handler for inbound webhook HTTP routes (late binding). */
+  setFeishuHandler(handler: Pick<FeishuAdapter, 'handleRequest'>): void {
+    this.config.feishuHandler = handler;
+  }
+
   private async startDiscovery(host: string, port: number): Promise<void> {
     const discovery = this.config.discovery;
     if (!discovery?.enabled) {