add site announcements

src/server/services/platforms/base.ts

@@ -1,3 +1,4 @@
+import { createHash } from 'node:crypto';
 import type { RequestInit as UndiciRequestInit } from 'undici';
 import { withSiteProxyRequestInit } from '../siteProxy.js';
 
@@ -44,6 +45,19 @@ export interface ApiTokenInfo {
   tokenGroup?: string | null;
 }
 
+export interface SiteAnnouncement {
+  sourceKey: string;
+  title: string;
+  content: string;
+  level: 'info' | 'warning' | 'error';
+  sourceUrl?: string | null;
+  startsAt?: string | null;
+  endsAt?: string | null;
+  upstreamCreatedAt?: string | null;
+  upstreamUpdatedAt?: string | null;
+  rawPayload?: unknown;
+}
+
 export interface CreateApiTokenOptions {
   name?: string;
   group?: string;
@@ -66,6 +80,7 @@ export interface PlatformAdapter {
   getModels(baseUrl: string, token: string, platformUserId?: number): Promise<string[]>;
   getApiToken(baseUrl: string, accessToken: string, platformUserId?: number): Promise<string | null>;
   getApiTokens(baseUrl: string, accessToken: string, platformUserId?: number): Promise<ApiTokenInfo[]>;
+  getSiteAnnouncements(baseUrl: string, accessToken: string, platformUserId?: number): Promise<SiteAnnouncement[]>;
   getUserGroups(baseUrl: string, accessToken: string, platformUserId?: number): Promise<string[]>;
   createApiToken(baseUrl: string, accessToken: string, platformUserId?: number, options?: CreateApiTokenOptions): Promise<boolean>;
   deleteApiToken(baseUrl: string, accessToken: string, tokenKey: string, platformUserId?: number): Promise<boolean>;
@@ -149,6 +164,14 @@ export abstract class BasePlatformAdapter implements PlatformAdapter {
     return [{ name: 'default', key: token, enabled: true, tokenGroup: 'default' }];
   }
 
+  async getSiteAnnouncements(
+    _baseUrl: string,
+    _accessToken: string,
+    _platformUserId?: number,
+  ): Promise<SiteAnnouncement[]> {
+    return [];
+  }
+
   async createApiToken(
     _baseUrl: string,
     _accessToken: string,
@@ -192,4 +215,9 @@ export abstract class BasePlatformAdapter implements PlatformAdapter {
     }
     return res.json() as Promise<T>;
   }
+
+  protected buildNoticeSourceKey(content: string): string {
+    const normalized = (content || '').trim();
+    return `notice:${createHash('sha1').update(normalized).digest('hex')}`;
+  }
 }

src/server/services/platforms/doneHub.test.ts

@@ -1,6 +1,7 @@
 import { afterEach, beforeEach, describe, expect, it } from 'vitest';
 import { createServer, type IncomingMessage, type ServerResponse } from 'node:http';
 import { AddressInfo } from 'node:net';
+import { createHash } from 'node:crypto';
 import { DoneHubAdapter } from './doneHub.js';
 
 describe('DoneHubAdapter', () => {
@@ -48,6 +49,15 @@ describe('DoneHubAdapter', () => {
         return;
       }
 
+      if (req.url === '/api/notice') {
+        res.writeHead(200, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({
+          success: true,
+          data: 'Scheduled maintenance tonight',
+        }));
+        return;
+      }
+
       res.writeHead(404, { 'Content-Type': 'application/json' });
       res.end(JSON.stringify({ error: 'not found' }));
     });
@@ -93,4 +103,20 @@ describe('DoneHubAdapter', () => {
     expect(balance.used).toBe(60);
     expect(balance.quota).toBe(100);
   });
+
+  it('normalizes the global site notice from /api/notice', async () => {
+    const adapter = new DoneHubAdapter();
+    const rows = await adapter.getSiteAnnouncements(baseUrl, 'token');
+
+    expect(rows).toEqual([
+      {
+        sourceKey: `notice:${createHash('sha1').update('Scheduled maintenance tonight').digest('hex')}`,
+        title: 'Site notice',
+        content: 'Scheduled maintenance tonight',
+        level: 'info',
+        sourceUrl: '/api/notice',
+        rawPayload: { success: true, data: 'Scheduled maintenance tonight' },
+      },
+    ]);
+  });
 });

src/server/services/platforms/doneHub.ts

@@ -1,5 +1,5 @@
 import { OneHubAdapter } from './oneHub.js';
-import type { BalanceInfo, CheckinResult } from './base.js';
+import type { BalanceInfo, CheckinResult, SiteAnnouncement } from './base.js';
 
 export class DoneHubAdapter extends OneHubAdapter {
   readonly platformName: string = 'done-hub';
@@ -32,6 +32,26 @@ export class DoneHubAdapter extends OneHubAdapter {
     return { balance: quotaRemaining, used, quota: total, todayIncome, todayQuotaConsumption };
   }
 
+  override async getSiteAnnouncements(baseUrl: string, _accessToken: string): Promise<SiteAnnouncement[]> {
+    try {
+      const payload = await this.fetchJson<any>(`${baseUrl}/api/notice`);
+      const content = typeof payload?.data === 'string'
+        ? payload.data.trim()
+        : (typeof payload === 'string' ? payload.trim() : '');
+      if (!content) return [];
+      return [{
+        sourceKey: this.buildNoticeSourceKey(content),
+        title: 'Site notice',
+        content,
+        level: 'info',
+        sourceUrl: '/api/notice',
+        rawPayload: payload,
+      }];
+    } catch {
+      return [];
+    }
+  }
+
   // getModels is inherited from OneHubAdapter which already has /api/available_model fallback.
   // No need to override here — OneHub's implementation handles this correctly.
 }

src/server/services/platforms/newApi.test.ts

@@ -1,6 +1,7 @@
 import { describe, it, expect, beforeEach, afterEach } from 'vitest';
 import { createServer, type IncomingMessage, type ServerResponse } from 'node:http';
 import { AddressInfo } from 'node:net';
+import { createHash } from 'node:crypto';
 import { readFileSync } from 'node:fs';
 import { NewApiAdapter } from './newApi.js';
 
@@ -142,6 +143,15 @@ describe('NewApiAdapter', () => {
         return;
       }
 
+      if (req.url === '/api/notice') {
+        res.writeHead(200, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({
+          success: true,
+          data: 'Welcome to the site',
+        }));
+        return;
+      }
+
       if (req.url?.startsWith('/api/token/')) {
         if (typeof req.headers.authorization === 'string' && req.headers.authorization === `Bearer ${COOKIE_SHIELDED_TOKEN}`) {
           res.writeHead(401, { 'Content-Type': 'application/json' });
@@ -616,4 +626,20 @@ describe('NewApiAdapter', () => {
     expect(receivedHeaders['rix-api-user']).toBe('42');
     expect(receivedHeaders['neo-api-user']).toBe('42');
   });
+
+  it('normalizes the global site notice from /api/notice', async () => {
+    const adapter = new NewApiAdapter();
+    const rows = await adapter.getSiteAnnouncements(baseUrl, 'session-token');
+
+    expect(rows).toEqual([
+      {
+        sourceKey: `notice:${createHash('sha1').update('Welcome to the site').digest('hex')}`,
+        title: 'Site notice',
+        content: 'Welcome to the site',
+        level: 'info',
+        sourceUrl: '/api/notice',
+        rawPayload: { success: true, data: 'Welcome to the site' },
+      },
+    ]);
+  });
 });

src/server/services/platforms/newApi.ts

@@ -1,4 +1,4 @@
-import { ApiTokenInfo, BasePlatformAdapter, CheckinResult, BalanceInfo, UserInfo, TokenVerifyResult, CreateApiTokenOptions } from './base.js';
+import { ApiTokenInfo, BasePlatformAdapter, CheckinResult, BalanceInfo, UserInfo, TokenVerifyResult, CreateApiTokenOptions, type SiteAnnouncement } from './base.js';
 import type { RequestInit as UndiciRequestInit } from 'undici';
 import { createContext, runInContext } from 'node:vm';
 import { withSiteProxyRequestInit } from '../siteProxy.js';
@@ -15,6 +15,26 @@ export class NewApiAdapter extends BasePlatformAdapter {
     }
   }
 
+  override async getSiteAnnouncements(baseUrl: string, _accessToken: string): Promise<SiteAnnouncement[]> {
+    try {
+      const payload = await this.fetchJson<any>(`${baseUrl}/api/notice`);
+      const content = typeof payload?.data === 'string'
+        ? payload.data.trim()
+        : (typeof payload === 'string' ? payload.trim() : '');
+      if (!content) return [];
+      return [{
+        sourceKey: this.buildNoticeSourceKey(content),
+        title: 'Site notice',
+        content,
+        level: 'info',
+        sourceUrl: '/api/notice',
+        rawPayload: payload,
+      }];
+    } catch {
+      return [];
+    }
+  }
+
   private tryDecodeUserId(token: string): number | null {
     try {
       const parts = token.split('.');

src/server/services/platforms/siteAnnouncements.test.ts

@@ -0,0 +1,103 @@
+import { describe, expect, it } from 'vitest';
+import {
+  BasePlatformAdapter,
+  type BalanceInfo,
+  type CheckinResult,
+  type PlatformAdapter,
+  type SiteAnnouncement,
+} from './base.js';
+
+class UnsupportedAnnouncementAdapter extends BasePlatformAdapter {
+  override readonly platformName = 'unsupported';
+
+  override async detect(): Promise<boolean> {
+    return false;
+  }
+
+  override async checkin(): Promise<CheckinResult> {
+    return { success: false, message: 'unsupported' };
+  }
+
+  override async getBalance(): Promise<BalanceInfo> {
+    return { balance: 0, used: 0, quota: 0 };
+  }
+
+  override async getModels(): Promise<string[]> {
+    return [];
+  }
+}
+
+class SingleNoticeAdapter extends UnsupportedAnnouncementAdapter {
+  override readonly platformName = 'single-notice';
+
+  override async getSiteAnnouncements(): Promise<SiteAnnouncement[]> {
+    return [{
+      sourceKey: 'notice:welcome',
+      title: 'Site notice',
+      content: 'Welcome to the site',
+      level: 'info',
+      sourceUrl: '/api/notice',
+      rawPayload: { notice: 'Welcome to the site' },
+    }];
+  }
+}
+
+class ListAnnouncementAdapter extends UnsupportedAnnouncementAdapter {
+  override readonly platformName = 'list-notice';
+
+  override async getSiteAnnouncements(): Promise<SiteAnnouncement[]> {
+    return [
+      {
+        sourceKey: 'announcement:1',
+        title: 'Maintenance',
+        content: 'Window starts at 10:00',
+        level: 'warning',
+        startsAt: '2026-03-20T10:00:00Z',
+        upstreamCreatedAt: '2026-03-20T09:00:00Z',
+        rawPayload: { id: 1 },
+      },
+      {
+        sourceKey: 'announcement:2',
+        title: 'New model online',
+        content: 'gpt-4.1 is available',
+        level: 'info',
+        endsAt: '2026-03-21T00:00:00Z',
+        upstreamUpdatedAt: '2026-03-20T12:00:00Z',
+        rawPayload: { id: 2 },
+      },
+    ];
+  }
+}
+
+function expectAnnouncementShape(row: SiteAnnouncement) {
+  expect(row.sourceKey).toBeTruthy();
+  expect(row.title).toBeTruthy();
+  expect(row.content).toBeTruthy();
+  expect(['info', 'warning', 'error']).toContain(row.level);
+}
+
+describe('site announcement platform contract', () => {
+  it('allows unsupported adapters to return an empty list', async () => {
+    const adapter: PlatformAdapter = new UnsupportedAnnouncementAdapter();
+
+    await expect(adapter.getSiteAnnouncements('https://example.com', 'token')).resolves.toEqual([]);
+  });
+
+  it('normalizes single-notice platforms into the shared announcement shape', async () => {
+    const adapter: PlatformAdapter = new SingleNoticeAdapter();
+
+    const rows = await adapter.getSiteAnnouncements('https://example.com', 'token');
+
+    expect(rows).toHaveLength(1);
+    expectAnnouncementShape(rows[0]);
+  });
+
+  it('normalizes list-style platforms into the shared announcement shape', async () => {
+    const adapter: PlatformAdapter = new ListAnnouncementAdapter();
+
+    const rows = await adapter.getSiteAnnouncements('https://example.com', 'token');
+
+    expect(rows).toHaveLength(2);
+    rows.forEach(expectAnnouncementShape);
+  });
+});

src/server/services/platforms/sub2api.test.ts

@@ -438,4 +438,79 @@ describe('Sub2ApiAdapter', () => {
     const deleted = await adapter.deleteApiToken(baseUrl, 'jwt-token', 'sk-delete-me');
     expect(deleted).toBe(true);
   });
+
+  it('normalizes announcements from /api/v1/announcements', async () => {
+    await startServer((req, res) => {
+      if (req.url === '/api/v1/announcements?page=1&page_size=100') {
+        res.writeHead(200, { 'Content-Type': 'application/json' });
+        res.end(JSON.stringify({
+          code: 0,
+          message: 'success',
+          data: {
+            items: [
+              {
+                id: 11,
+                title: 'Maintenance',
+                content: 'Window starts at 10:00',
+                starts_at: '2026-03-20T10:00:00Z',
+                ends_at: '2026-03-20T12:00:00Z',
+                created_at: '2026-03-20T09:00:00Z',
+                updated_at: '2026-03-20T09:30:00Z',
+              },
+              {
+                id: 12,
+                title: 'New model online',
+                content: 'gpt-4.1 is available',
+                read_at: '2026-03-20T12:05:00Z',
+                created_at: '2026-03-20T12:00:00Z',
+                updated_at: '2026-03-20T12:01:00Z',
+              },
+            ],
+          },
+        }));
+        return;
+      }
+      res.writeHead(404).end();
+    });
+
+    const rows = await adapter.getSiteAnnouncements(baseUrl, 'jwt-token');
+
+    expect(rows).toEqual([
+      {
+        sourceKey: 'announcement:11',
+        title: 'Maintenance',
+        content: 'Window starts at 10:00',
+        level: 'info',
+        startsAt: '2026-03-20T10:00:00Z',
+        endsAt: '2026-03-20T12:00:00Z',
+        upstreamCreatedAt: '2026-03-20T09:00:00Z',
+        upstreamUpdatedAt: '2026-03-20T09:30:00Z',
+        rawPayload: {
+          id: 11,
+          title: 'Maintenance',
+          content: 'Window starts at 10:00',
+          starts_at: '2026-03-20T10:00:00Z',
+          ends_at: '2026-03-20T12:00:00Z',
+          created_at: '2026-03-20T09:00:00Z',
+          updated_at: '2026-03-20T09:30:00Z',
+        },
+      },
+      {
+        sourceKey: 'announcement:12',
+        title: 'New model online',
+        content: 'gpt-4.1 is available',
+        level: 'info',
+        upstreamCreatedAt: '2026-03-20T12:00:00Z',
+        upstreamUpdatedAt: '2026-03-20T12:01:00Z',
+        rawPayload: {
+          id: 12,
+          title: 'New model online',
+          content: 'gpt-4.1 is available',
+          read_at: '2026-03-20T12:05:00Z',
+          created_at: '2026-03-20T12:00:00Z',
+          updated_at: '2026-03-20T12:01:00Z',
+        },
+      },
+    ]);
+  });
 });

src/server/services/platforms/sub2api.ts

@@ -4,6 +4,7 @@ import {
   CheckinResult,
   BalanceInfo,
   CreateApiTokenOptions,
+  type SiteAnnouncement,
   UserInfo,
 } from './base.js';
 
@@ -486,6 +487,41 @@ export class Sub2ApiAdapter extends BasePlatformAdapter {
     return this.fetchModelsByToken(normalizedBase, discoveredApiToken);
   }
 
+  override async getSiteAnnouncements(baseUrl: string, accessToken: string): Promise<SiteAnnouncement[]> {
+    try {
+      const endpoint = '/api/v1/announcements?page=1&page_size=100';
+      const res = await this.fetchJson<any>(`${normalizeBaseUrl(baseUrl)}${endpoint}`, {
+        headers: this.buildAuthHeader(accessToken),
+      });
+      const data = this.parseSub2ApiEnvelope<any>(res, endpoint);
+      const rawItems = Array.isArray(data)
+        ? data
+        : (Array.isArray(data?.items) ? data.items : []);
+      const rows: SiteAnnouncement[] = [];
+      for (const item of rawItems) {
+        const id = Number.parseInt(String(item?.id), 10);
+        if (!Number.isFinite(id) || id <= 0) continue;
+        const title = typeof item?.title === 'string' ? item.title.trim() : '';
+        const content = typeof item?.content === 'string' ? item.content.trim() : '';
+        if (!title && !content) continue;
+        rows.push({
+          sourceKey: `announcement:${id}`,
+          title: title || `Announcement ${id}`,
+          content: content || title,
+          level: 'info',
+          startsAt: typeof item?.starts_at === 'string' ? item.starts_at : undefined,
+          endsAt: typeof item?.ends_at === 'string' ? item.ends_at : undefined,
+          upstreamCreatedAt: typeof item?.created_at === 'string' ? item.created_at : undefined,
+          upstreamUpdatedAt: typeof item?.updated_at === 'string' ? item.updated_at : undefined,
+          rawPayload: item,
+        });
+      }
+      return rows;
+    } catch {
+      return [];
+    }
+  }
+
   override async getApiTokens(baseUrl: string, accessToken: string): Promise<ApiTokenInfo[]> {
     try {
       const keys = await this.listApiKeys(normalizeBaseUrl(baseUrl), accessToken);

src/server/services/siteAnnouncementPollingService.test.ts

@@ -0,0 +1,32 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+const syncSiteAnnouncementsMock = vi.fn();
+
+vi.mock('./siteAnnouncementService.js', () => ({
+  syncSiteAnnouncements: (...args: unknown[]) => syncSiteAnnouncementsMock(...args),
+}));
+
+describe('siteAnnouncementPollingService', () => {
+  beforeEach(() => {
+    vi.useFakeTimers();
+    syncSiteAnnouncementsMock.mockReset();
+  });
+
+  afterEach(async () => {
+    const module = await import('./siteAnnouncementPollingService.js');
+    module.stopSiteAnnouncementPolling();
+    vi.useRealTimers();
+  });
+
+  it('runs one immediate sync and then continues on the configured interval', async () => {
+    const module = await import('./siteAnnouncementPollingService.js');
+    syncSiteAnnouncementsMock.mockResolvedValue(undefined);
+
+    module.startSiteAnnouncementPolling(60_000);
+    await vi.advanceTimersByTimeAsync(0);
+    expect(syncSiteAnnouncementsMock).toHaveBeenCalledTimes(1);
+
+    await vi.advanceTimersByTimeAsync(60_000);
+    expect(syncSiteAnnouncementsMock).toHaveBeenCalledTimes(2);
+  });
+});

src/server/services/siteAnnouncementPollingService.ts

@@ -0,0 +1,35 @@
+import { syncSiteAnnouncements } from './siteAnnouncementService.js';
+
+const DEFAULT_SITE_ANNOUNCEMENT_INTERVAL_MS = 15 * 60 * 1000;
+
+let pollingTimer: ReturnType<typeof setInterval> | null = null;
+let syncRunning = false;
+
+async function runSyncOnce() {
+  if (syncRunning) return;
+  syncRunning = true;
+  try {
+    await syncSiteAnnouncements();
+  } catch (error) {
+    console.error('[SiteAnnouncementPolling] Sync failed:', error);
+  } finally {
+    syncRunning = false;
+  }
+}
+
+export function startSiteAnnouncementPolling(intervalMs = DEFAULT_SITE_ANNOUNCEMENT_INTERVAL_MS) {
+  stopSiteAnnouncementPolling();
+  pollingTimer = setInterval(() => {
+    void runSyncOnce();
+  }, Math.max(10_000, intervalMs));
+  pollingTimer.unref?.();
+  void runSyncOnce();
+  return { intervalMs: Math.max(10_000, intervalMs) };
+}
+
+export function stopSiteAnnouncementPolling() {
+  if (pollingTimer) {
+    clearInterval(pollingTimer);
+    pollingTimer = null;
+  }
+}

src/server/services/siteAnnouncementService.test.ts

@@ -0,0 +1,192 @@
+import { afterAll, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest';
+import { mkdtempSync, rmSync } from 'node:fs';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+
+const getAdapterMock = vi.fn();
+const sendNotificationMock = vi.fn();
+
+vi.mock('./platforms/index.js', () => ({
+  getAdapter: (...args: unknown[]) => getAdapterMock(...args),
+}));
+
+vi.mock('./notifyService.js', () => ({
+  sendNotification: (...args: unknown[]) => sendNotificationMock(...args),
+}));
+
+type DbModule = typeof import('../db/index.js');
+type ServiceModule = typeof import('./siteAnnouncementService.js');
+
+describe('siteAnnouncementService', () => {
+  let dataDir = '';
+  let db: DbModule['db'];
+  let schema: DbModule['schema'];
+  let closeDbConnections: DbModule['closeDbConnections'];
+  let syncSiteAnnouncements: ServiceModule['syncSiteAnnouncements'];
+
+  beforeAll(async () => {
+    dataDir = mkdtempSync(join(tmpdir(), 'metapi-site-announcements-service-'));
+    process.env.DATA_DIR = dataDir;
+
+    await import('../db/migrate.js');
+    const dbModule = await import('../db/index.js');
+    const serviceModule = await import('./siteAnnouncementService.js');
+    db = dbModule.db;
+    schema = dbModule.schema;
+    closeDbConnections = dbModule.closeDbConnections;
+    syncSiteAnnouncements = serviceModule.syncSiteAnnouncements;
+  });
+
+  beforeEach(async () => {
+    vi.useFakeTimers();
+    getAdapterMock.mockReset();
+    sendNotificationMock.mockReset();
+
+    await db.delete(schema.siteAnnouncements).run();
+    await db.delete(schema.events).run();
+    await db.delete(schema.accounts).run();
+    await db.delete(schema.sites).run();
+  });
+
+  afterAll(async () => {
+    vi.useRealTimers();
+    if (typeof closeDbConnections === 'function') {
+      await closeDbConnections();
+    }
+    if (dataDir) {
+      try {
+        rmSync(dataDir, { recursive: true, force: true });
+      } catch {}
+    }
+    delete process.env.DATA_DIR;
+  });
+
+  it('stores first-seen announcements, creates one event, and sends one notification', async () => {
+    vi.setSystemTime(new Date('2026-03-20T10:00:00Z'));
+
+    const site = await db.insert(schema.sites).values({
+      name: 'Sub Site',
+      url: 'https://sub.example.com',
+      platform: 'sub2api',
+      status: 'active',
+    }).returning().get();
+    await db.insert(schema.accounts).values({
+      siteId: site.id,
+      username: 'demo-user',
+      accessToken: 'jwt-token',
+      status: 'active',
+    }).run();
+    await db.insert(schema.sites).values({
+      name: 'Unsupported Site',
+      url: 'https://unsupported.example.com',
+      platform: 'openai',
+      status: 'active',
+    }).run();
+
+    getAdapterMock.mockImplementation((platform: string) => {
+      if (platform === 'sub2api') {
+        return {
+          getSiteAnnouncements: vi.fn(async (_baseUrl: string, accessToken: string) => {
+            expect(accessToken).toBe('jwt-token');
+            return [{
+              sourceKey: 'announcement:11',
+              title: 'Maintenance',
+              content: 'Window starts at 10:00',
+              level: 'info',
+              rawPayload: { id: 11, title: 'Maintenance' },
+            }];
+          }),
+        };
+      }
+      return {
+        getSiteAnnouncements: undefined,
+      };
+    });
+
+    const result = await syncSiteAnnouncements();
+
+    expect(result).toMatchObject({
+      scannedSites: 2,
+      inserted: 1,
+      updated: 0,
+      unsupported: 1,
+      notifications: 1,
+      events: 1,
+      failed: 0,
+    });
+
+    const announcementRows = await db.select().from(schema.siteAnnouncements).all();
+    expect(announcementRows).toHaveLength(1);
+    expect(announcementRows[0]).toMatchObject({
+      siteId: site.id,
+      platform: 'sub2api',
+      sourceKey: 'announcement:11',
+      title: 'Maintenance',
+      content: 'Window starts at 10:00',
+      level: 'info',
+    });
+
+    const eventRows = await db.select().from(schema.events).all();
+    expect(eventRows).toHaveLength(1);
+    expect(eventRows[0]).toMatchObject({
+      type: 'site_notice',
+      relatedType: 'site_announcement',
+    });
+    expect(Number(eventRows[0]?.relatedId)).toBe(Number(announcementRows[0]?.id));
+
+    expect(sendNotificationMock).toHaveBeenCalledTimes(1);
+    expect(sendNotificationMock.mock.calls[0]?.[0]).toContain('Sub Site');
+    expect(sendNotificationMock.mock.calls[0]?.[1]).toContain('Window starts at 10:00');
+    expect(sendNotificationMock.mock.calls[0]?.[2]).toBe('info');
+  });
+
+  it('updates existing announcements without duplicating events or notifications', async () => {
+    const site = await db.insert(schema.sites).values({
+      name: 'Sub Site',
+      url: 'https://sub.example.com',
+      platform: 'sub2api',
+      status: 'active',
+    }).returning().get();
+    await db.insert(schema.accounts).values({
+      siteId: site.id,
+      username: 'demo-user',
+      accessToken: 'jwt-token',
+      status: 'active',
+    }).run();
+
+    getAdapterMock.mockReturnValue({
+      getSiteAnnouncements: vi.fn(async () => [{
+        sourceKey: 'announcement:11',
+        title: 'Maintenance',
+        content: 'Window starts at 10:00',
+        level: 'info',
+        rawPayload: { id: 11, title: 'Maintenance' },
+      }]),
+    });
+
+    vi.setSystemTime(new Date('2026-03-20T10:00:00Z'));
+    await syncSiteAnnouncements({ siteId: site.id });
+    const firstRow = await db.select().from(schema.siteAnnouncements).get();
+
+    vi.setSystemTime(new Date('2026-03-20T11:00:00Z'));
+    const result = await syncSiteAnnouncements({ siteId: site.id });
+
+    expect(result).toMatchObject({
+      scannedSites: 1,
+      inserted: 0,
+      updated: 1,
+      notifications: 0,
+      events: 0,
+      failed: 0,
+    });
+
+    const announcementRows = await db.select().from(schema.siteAnnouncements).all();
+    expect(announcementRows).toHaveLength(1);
+    expect(announcementRows[0]?.firstSeenAt).toBe(firstRow?.firstSeenAt);
+    expect(announcementRows[0]?.lastSeenAt).not.toBe(firstRow?.lastSeenAt);
+
+    const eventRows = await db.select().from(schema.events).all();
+    expect(eventRows).toHaveLength(1);
+    expect(sendNotificationMock).toHaveBeenCalledTimes(1);
+  });
+});

src/server/services/siteAnnouncementService.ts

@@ -0,0 +1,163 @@
+import { and, asc, eq } from 'drizzle-orm';
+import { db, schema } from '../db/index.js';
+import { getAdapter } from './platforms/index.js';
+import { sendNotification } from './notifyService.js';
+import { formatUtcSqlDateTime } from './localTimeService.js';
+import type { SiteAnnouncement } from './platforms/base.js';
+
+export type SiteAnnouncementSyncResult = {
+  scannedSites: number;
+  inserted: number;
+  updated: number;
+  unsupported: number;
+  notifications: number;
+  events: number;
+  failed: number;
+  failedSites: Array<{ siteId: number; siteName: string; message: string }>;
+};
+
+function toStoredPayload(rawPayload: unknown): string | null {
+  if (rawPayload === undefined) return null;
+  try {
+    return JSON.stringify(rawPayload);
+  } catch {
+    return null;
+  }
+}
+
+function buildAnnouncementMessage(row: SiteAnnouncement): string {
+  const title = String(row.title || '').trim();
+  const content = String(row.content || '').trim();
+  if (title && content && title !== content && title.toLowerCase() !== 'site notice') {
+    return `${title}\n${content}`;
+  }
+  return content || title;
+}
+
+async function resolveSiteAccessToken(siteId: number, siteApiKey?: string | null): Promise<string> {
+  const direct = String(siteApiKey || '').trim();
+  if (direct) return direct;
+
+  const account = await db.select()
+    .from(schema.accounts)
+    .where(and(
+      eq(schema.accounts.siteId, siteId),
+      eq(schema.accounts.status, 'active'),
+    ))
+    .orderBy(asc(schema.accounts.id))
+    .limit(1)
+    .get();
+
+  return String(account?.accessToken || '').trim();
+}
+
+async function listTargetSites(siteId?: number | null) {
+  if (siteId && Number.isFinite(siteId) && siteId > 0) {
+    return await db.select()
+      .from(schema.sites)
+      .where(eq(schema.sites.id, siteId))
+      .all();
+  }
+
+  return await db.select()
+    .from(schema.sites)
+    .where(eq(schema.sites.status, 'active'))
+    .all();
+}
+
+export async function syncSiteAnnouncements(options?: { siteId?: number | null }): Promise<SiteAnnouncementSyncResult> {
+  const result: SiteAnnouncementSyncResult = {
+    scannedSites: 0,
+    inserted: 0,
+    updated: 0,
+    unsupported: 0,
+    notifications: 0,
+    events: 0,
+    failed: 0,
+    failedSites: [],
+  };
+
+  const sites = await listTargetSites(options?.siteId ?? null);
+
+  for (const site of sites) {
+    result.scannedSites += 1;
+    const adapter = getAdapter(String(site.platform || ''));
+    if (!adapter || typeof adapter.getSiteAnnouncements !== 'function') {
+      result.unsupported += 1;
+      continue;
+    }
+
+    try {
+      const accessToken = await resolveSiteAccessToken(site.id, site.apiKey);
+      const announcements = await adapter.getSiteAnnouncements(site.url, accessToken);
+      const seenAt = formatUtcSqlDateTime(new Date());
+
+      for (const announcement of announcements) {
+        const existing = await db.select()
+          .from(schema.siteAnnouncements)
+          .where(and(
+            eq(schema.siteAnnouncements.siteId, site.id),
+            eq(schema.siteAnnouncements.sourceKey, announcement.sourceKey),
+          ))
+          .limit(1)
+          .get();
+
+        const patch = {
+          platform: String(site.platform || '').trim(),
+          title: announcement.title,
+          content: announcement.content,
+          level: announcement.level,
+          sourceUrl: announcement.sourceUrl ?? null,
+          startsAt: announcement.startsAt ?? null,
+          endsAt: announcement.endsAt ?? null,
+          upstreamCreatedAt: announcement.upstreamCreatedAt ?? null,
+          upstreamUpdatedAt: announcement.upstreamUpdatedAt ?? null,
+          lastSeenAt: seenAt,
+          rawPayload: toStoredPayload(announcement.rawPayload),
+        };
+
+        if (existing) {
+          await db.update(schema.siteAnnouncements)
+            .set(patch)
+            .where(eq(schema.siteAnnouncements.id, existing.id))
+            .run();
+          result.updated += 1;
+          continue;
+        }
+
+        const inserted = await db.insert(schema.siteAnnouncements).values({
+          siteId: site.id,
+          sourceKey: announcement.sourceKey,
+          firstSeenAt: seenAt,
+          ...patch,
+        }).returning().get();
+        result.inserted += 1;
+
+        const title = `站点公告：${site.name}`;
+        const message = buildAnnouncementMessage(announcement);
+        await db.insert(schema.events).values({
+          type: 'site_notice',
+          title,
+          message,
+          level: announcement.level,
+          relatedId: inserted.id,
+          relatedType: 'site_announcement',
+          createdAt: seenAt,
+        }).run();
+        result.events += 1;
+
+        await sendNotification(title, message, announcement.level);
+        result.notifications += 1;
+      }
+    } catch (error) {
+      result.failed += 1;
+      result.failedSites.push({
+        siteId: site.id,
+        siteName: site.name,
+        message: error instanceof Error && error.message ? error.message : 'unknown error',
+      });
+    }
+  }
+
+  return result;
+}