| 1 | // Package weixin 实现微信 iLink Bot 适配器。 |
| 2 | // 参考 Hermes Agent 的 weixin adapter： |
| 3 | // - getupdates 长轮询 |
| 4 | // - sendmessage / sendtyping |
| 5 | // - context_token 持久化 |
| 6 | // - 二维码登录 |
| 7 | // - DM allowlist（默认只对 allowlist 内用户开放 DM；群聊默认关闭） |
| 8 | package weixin |
| 9 | |
| 10 | import ( |
| 11 | "bytes" |
| 12 | "context" |
| 13 | "crypto/rand" |
| 14 | "crypto/sha256" |
| 15 | "encoding/base64" |
| 16 | "encoding/hex" |
| 17 | "encoding/json" |
| 18 | "fmt" |
| 19 | "io" |
| 20 | "log/slog" |
| 21 | "net/http" |
| 22 | "os" |
| 23 | "path/filepath" |
| 24 | "strings" |
| 25 | "sync" |
| 26 | "time" |
| 27 | |
| 28 | "reasonix/internal/bot" |
| 29 | "reasonix/internal/config" |
| 30 | "reasonix/internal/fileutil" |
| 31 | fileencoding "reasonix/internal/fileutil/encoding" |
| 32 | ) |
| 33 | |
| 34 | const ( |
| 35 | defaultWeixinAPI = "https://ilinkai.weixin.qq.com" |
| 36 | getUpdatesPath = "/ilink/bot/getupdates" |
| 37 | sendMessagePath = "/ilink/bot/sendmessage" |
| 38 | sendTypingPath = "/ilink/bot/sendtyping" |
| 39 | uploadMediaPath = "/ilink/bot/getuploadurl" |
| 40 | getBotQRPath = "/ilink/bot/get_bot_qrcode" |
| 41 | getQRStatusPath = "/ilink/bot/get_qrcode_status" |
| 42 | |
| 43 | ilinkAppID = "bot" |
| 44 | ilinkClientVersion = (2 << 16) | (2 << 8) |
| 45 | ilinkChannelVersion = "2.2.0" |
| 46 | weixinItemText = 1 |
| 47 | weixinMsgTypeBot = 2 |
| 48 | weixinMsgStateDone = 2 |
| 49 | |
| 50 | weixinHTTPTimeout = 30 * time.Second |
| 51 | ) |
| 52 | |
| 53 | var weixinHTTPClient = &http.Client{Timeout: weixinHTTPTimeout} |
| 54 | |
| 55 | // ilinkUpdate 微信 iLink getupdates 返回的更新消息。 |
| 56 | type ilinkUpdate struct { |
| 57 | UpdateID int64 `json:"update_id"` |
| 58 | UpdateType string `json:"update_type"` |
| 59 | Message struct { |
| 60 | MessageID ilinkString `json:"message_id"` |
| 61 | ChatID string `json:"chat_id"` |
| 62 | ChatType string `json:"chat_type"` |
| 63 | From struct { |
| 64 | UserID string `json:"user_id"` |
| 65 | UserName string `json:"user_name"` |
| 66 | } `json:"from"` |
| 67 | Text string `json:"text"` |
| 68 | Timestamp int64 `json:"timestamp"` |
| 69 | } `json:"message"` |
| 70 | } |
| 71 | |
| 72 | type ilinkMessage struct { |
| 73 | MessageID ilinkString `json:"message_id"` |
| 74 | FromUserID string `json:"from_user_id"` |
| 75 | ToUserID string `json:"to_user_id"` |
| 76 | RoomID string `json:"room_id"` |
| 77 | ChatRoomID string `json:"chat_room_id"` |
| 78 | ContextToken string `json:"context_token"` |
| 79 | MsgType int `json:"msg_type"` |
| 80 | ItemList []struct { |
| 81 | Type int `json:"type"` |
| 82 | TextItem struct { |
| 83 | Text string `json:"text"` |
| 84 | } `json:"text_item"` |
| 85 | } `json:"item_list"` |
| 86 | } |
| 87 | |
| 88 | type ilinkResponse struct { |
| 89 | Ret int `json:"ret"` |
| 90 | Errcode int `json:"errcode"` |
| 91 | Errmsg string `json:"errmsg"` |
| 92 | Updates []ilinkUpdate `json:"updates"` |
| 93 | Msgs []ilinkMessage `json:"msgs"` |
| 94 | HasMore bool `json:"has_more"` |
| 95 | ContextToken string `json:"context_token"` |
| 96 | GetUpdatesBuf string `json:"get_updates_buf"` |
| 97 | LongpollingTimeoutMs int `json:"longpolling_timeout_ms"` |
| 98 | } |
| 99 | |
| 100 | type ilinkString string |
| 101 | |
| 102 | func (s *ilinkString) UnmarshalJSON(data []byte) error { |
| 103 | if string(data) == "null" { |
| 104 | *s = "" |
| 105 | return nil |
| 106 | } |
| 107 | var str string |
| 108 | if err := json.Unmarshal(data, &str); err == nil { |
| 109 | *s = ilinkString(str) |
| 110 | return nil |
| 111 | } |
| 112 | var num json.Number |
| 113 | if err := json.Unmarshal(data, &num); err == nil { |
| 114 | *s = ilinkString(num.String()) |
| 115 | return nil |
| 116 | } |
| 117 | return fmt.Errorf("ilink string: expected string or number, got %s", string(data)) |
| 118 | } |
| 119 | |
| 120 | // adapter 微信适配器实现。 |
| 121 | type adapter struct { |
| 122 | cfg config.WeixinBotConfig |
| 123 | logger *slog.Logger |
| 124 | msgCh chan bot.InboundMessage |
| 125 | cancel context.CancelFunc |
| 126 | |
| 127 | mu sync.Mutex |
| 128 | contextTokens map[string]string |
| 129 | syncBuf string |
| 130 | lastUpdateID int64 |
| 131 | pollReadyOnce sync.Once |
| 132 | lastPollLog time.Time |
| 133 | } |
| 134 | |
| 135 | // New 创建微信 Bot 适配器。 |
| 136 | func New(cfg config.WeixinBotConfig, logger *slog.Logger) bot.Adapter { |
| 137 | return &adapter{ |
| 138 | cfg: cfg, |
| 139 | logger: logger.With("platform", "weixin"), |
| 140 | contextTokens: make(map[string]string), |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | func (a *adapter) Platform() bot.Platform { return bot.PlatformWeixin } |
| 145 | func (a *adapter) Name() string { return "weixin" } |
| 146 | |
| 147 | func (a *adapter) Start(ctx context.Context) error { |
| 148 | a.msgCh = make(chan bot.InboundMessage, 64) |
| 149 | ctx, a.cancel = context.WithCancel(ctx) |
| 150 | a.loadContextTokens() |
| 151 | if a.token() == "" { |
| 152 | return a.tokenMissingError() |
| 153 | } |
| 154 | |
| 155 | a.logger.Info("weixin polling started", "account", logHash(a.accountID()), "api_base", a.apiBase()) |
| 156 | go a.pollLoop(ctx) |
| 157 | return nil |
| 158 | } |
| 159 | |
| 160 | func (a *adapter) Stop() error { |
| 161 | if a.cancel != nil { |
| 162 | a.cancel() |
| 163 | } |
| 164 | return nil |
| 165 | } |
| 166 | |
| 167 | func (a *adapter) Send(ctx context.Context, msg bot.OutboundMessage) (bot.SendResult, error) { |
| 168 | return a.sendMessage(ctx, msg) |
| 169 | } |
| 170 | |
| 171 | func (a *adapter) SendTyping(ctx context.Context, chatID string) error { |
| 172 | return a.sendTyping(ctx, chatID) |
| 173 | } |
| 174 | |
| 175 | func (a *adapter) Messages() <-chan bot.InboundMessage { |
| 176 | return a.msgCh |
| 177 | } |
| 178 | |
| 179 | // SendText sends one plain text message to a saved Weixin iLink conversation. |
| 180 | // It is used by desktop settings as an actual connection test. |
| 181 | func SendText(ctx context.Context, cfg config.WeixinBotConfig, chatID, text string) (bot.SendResult, error) { |
| 182 | a := &adapter{cfg: cfg, logger: slog.Default().With("platform", "weixin"), contextTokens: make(map[string]string)} |
| 183 | return a.sendMessage(ctx, bot.OutboundMessage{ChatID: chatID, Text: text}) |
| 184 | } |
| 185 | |
| 186 | // token 从环境变量获取微信 token。 |
| 187 | func (a *adapter) token() string { |
| 188 | if token := os.Getenv(a.cfg.TokenEnv); token != "" { |
| 189 | return token |
| 190 | } |
| 191 | account, _ := loadSavedAccount(a.accountID()) |
| 192 | if account.Token != "" { |
| 193 | return account.Token |
| 194 | } |
| 195 | if a.cfg.AccountID == "" { |
| 196 | account, _ = loadAnySavedAccount() |
| 197 | return account.Token |
| 198 | } |
| 199 | return "" |
| 200 | } |
| 201 | |
| 202 | func (a *adapter) tokenMissingError() error { |
| 203 | if strings.TrimSpace(a.cfg.TokenEnv) == "" { |
| 204 | return fmt.Errorf("weixin token is not configured and no saved weixin account is available") |
| 205 | } |
| 206 | return fmt.Errorf("%s not set and no saved weixin account is available", a.cfg.TokenEnv) |
| 207 | } |
| 208 | |
| 209 | // apiBase 返回 API base URL。 |
| 210 | func (a *adapter) apiBase() string { |
| 211 | if a.cfg.APIBase != "" { |
| 212 | return a.cfg.APIBase |
| 213 | } |
| 214 | account, _ := loadSavedAccount(a.accountID()) |
| 215 | if account.BaseURL != "" { |
| 216 | return strings.TrimRight(account.BaseURL, "/") |
| 217 | } |
| 218 | return defaultWeixinAPI |
| 219 | } |
| 220 | |
| 221 | func (a *adapter) accountID() string { |
| 222 | if a.cfg.AccountID != "" { |
| 223 | return a.cfg.AccountID |
| 224 | } |
| 225 | return "default" |
| 226 | } |
| 227 | |
| 228 | func (a *adapter) contextToken(chatID string) string { |
| 229 | a.mu.Lock() |
| 230 | defer a.mu.Unlock() |
| 231 | return a.contextTokens[chatID] |
| 232 | } |
| 233 | |
| 234 | func (a *adapter) setContextToken(chatID, token string) { |
| 235 | a.mu.Lock() |
| 236 | if token == "" { |
| 237 | delete(a.contextTokens, chatID) |
| 238 | } else { |
| 239 | a.contextTokens[chatID] = token |
| 240 | } |
| 241 | a.mu.Unlock() |
| 242 | a.saveContextTokens() |
| 243 | } |
| 244 | |
| 245 | func (a *adapter) tokenStorePath() string { |
| 246 | root := config.MemoryUserDir() |
| 247 | if root == "" { |
| 248 | return "" |
| 249 | } |
| 250 | return filepath.Join(weixinAccountDir(root), a.accountID()+".context-tokens.json") |
| 251 | } |
| 252 | |
| 253 | func (a *adapter) loadContextTokens() { |
| 254 | path := a.tokenStorePath() |
| 255 | if path == "" { |
| 256 | return |
| 257 | } |
| 258 | data, err := fileencoding.ReadFileUTF8(path) |
| 259 | if err != nil { |
| 260 | return |
| 261 | } |
| 262 | var tokens map[string]string |
| 263 | if err := json.Unmarshal(data, &tokens); err != nil { |
| 264 | a.logger.Warn("failed to load weixin context tokens", "err", err) |
| 265 | return |
| 266 | } |
| 267 | a.mu.Lock() |
| 268 | a.contextTokens = tokens |
| 269 | a.mu.Unlock() |
| 270 | } |
| 271 | |
| 272 | func (a *adapter) saveContextTokens() { |
| 273 | path := a.tokenStorePath() |
| 274 | if path == "" { |
| 275 | return |
| 276 | } |
| 277 | if err := os.MkdirAll(filepath.Dir(path), 0o700); err != nil { |
| 278 | a.logger.Warn("failed to create weixin token dir", "err", err) |
| 279 | return |
| 280 | } |
| 281 | a.mu.Lock() |
| 282 | data, err := json.MarshalIndent(a.contextTokens, "", " ") |
| 283 | a.mu.Unlock() |
| 284 | if err != nil { |
| 285 | return |
| 286 | } |
| 287 | if err := fileutil.AtomicWriteFile(path, data, 0o600); err != nil { |
| 288 | a.logger.Warn("failed to save weixin context tokens", "err", err) |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | func ilinkGET(ctx context.Context, baseURL, endpoint string) (map[string]any, error) { |
| 293 | req, err := http.NewRequestWithContext(ctx, http.MethodGet, strings.TrimRight(baseURL, "/")+"/"+strings.TrimLeft(endpoint, "/"), nil) |
| 294 | if err != nil { |
| 295 | return nil, err |
| 296 | } |
| 297 | req.Header.Set("iLink-App-Id", ilinkAppID) |
| 298 | req.Header.Set("iLink-App-ClientVersion", fmt.Sprintf("%d", ilinkClientVersion)) |
| 299 | resp, err := weixinHTTPClient.Do(req) |
| 300 | if err != nil { |
| 301 | return nil, err |
| 302 | } |
| 303 | defer resp.Body.Close() |
| 304 | data, _ := io.ReadAll(resp.Body) |
| 305 | if resp.StatusCode >= 400 { |
| 306 | if len(data) > 200 { |
| 307 | data = data[:200] |
| 308 | } |
| 309 | return nil, fmt.Errorf("HTTP %d: %s", resp.StatusCode, string(data)) |
| 310 | } |
| 311 | var out map[string]any |
| 312 | if err := json.Unmarshal(data, &out); err != nil { |
| 313 | return nil, err |
| 314 | } |
| 315 | return out, nil |
| 316 | } |
| 317 | |
| 318 | // pollLoop 长轮询获取更新。 |
| 319 | func (a *adapter) pollLoop(ctx context.Context) { |
| 320 | // 启动时短暂等待让登录完成 |
| 321 | if !bot.SleepCtx(ctx, 2*time.Second) { |
| 322 | return |
| 323 | } |
| 324 | |
| 325 | for { |
| 326 | if ctx.Err() != nil { |
| 327 | return |
| 328 | } |
| 329 | |
| 330 | updates, err := a.getUpdates(ctx) |
| 331 | if err != nil { |
| 332 | a.logger.Error("getupdates failed", "err", err) |
| 333 | if !bot.SleepCtx(ctx, 5*time.Second) { |
| 334 | return |
| 335 | } |
| 336 | continue |
| 337 | } |
| 338 | |
| 339 | for _, upd := range updates { |
| 340 | a.handleUpdate(upd) |
| 341 | } |
| 342 | |
| 343 | // 没有更新时短暂等待 |
| 344 | if len(updates) == 0 { |
| 345 | if !bot.SleepCtx(ctx, 500*time.Millisecond) { |
| 346 | return |
| 347 | } |
| 348 | } |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | // getUpdates 调用微信 iLink getupdates API。 |
| 353 | func (a *adapter) getUpdates(ctx context.Context) ([]ilinkUpdate, error) { |
| 354 | tok := a.token() |
| 355 | if tok == "" { |
| 356 | return nil, a.tokenMissingError() |
| 357 | } |
| 358 | |
| 359 | url := a.apiBase() + getUpdatesPath |
| 360 | |
| 361 | a.mu.Lock() |
| 362 | payload := map[string]any{ |
| 363 | "get_updates_buf": a.syncBuf, |
| 364 | "base_info": map[string]string{ |
| 365 | "channel_version": ilinkChannelVersion, |
| 366 | }, |
| 367 | } |
| 368 | a.mu.Unlock() |
| 369 | |
| 370 | body, _ := json.Marshal(payload) |
| 371 | req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewBuffer(body)) |
| 372 | if err != nil { |
| 373 | return nil, err |
| 374 | } |
| 375 | setIlinkHeaders(req, tok, body) |
| 376 | |
| 377 | resp, err := weixinHTTPClient.Do(req) |
| 378 | if err != nil { |
| 379 | return nil, err |
| 380 | } |
| 381 | defer resp.Body.Close() |
| 382 | |
| 383 | var result ilinkResponse |
| 384 | if err := json.NewDecoder(resp.Body).Decode(&result); err != nil { |
| 385 | return nil, err |
| 386 | } |
| 387 | if result.Ret != 0 || result.Errcode != 0 { |
| 388 | return nil, fmt.Errorf("getupdates error ret=%d errcode=%d: %s", result.Ret, result.Errcode, result.Errmsg) |
| 389 | } |
| 390 | a.pollReadyOnce.Do(func() { |
| 391 | a.logger.Info("weixin getupdates ready", "account", logHash(a.accountID()), "api_base", a.apiBase()) |
| 392 | }) |
| 393 | a.logPollHealth(result) |
| 394 | |
| 395 | a.mu.Lock() |
| 396 | if result.GetUpdatesBuf != "" { |
| 397 | a.syncBuf = result.GetUpdatesBuf |
| 398 | } |
| 399 | if len(result.Updates) > 0 { |
| 400 | last := result.Updates[len(result.Updates)-1] |
| 401 | a.lastUpdateID = last.UpdateID |
| 402 | } |
| 403 | a.mu.Unlock() |
| 404 | |
| 405 | if len(result.Msgs) > 0 { |
| 406 | for _, msg := range result.Msgs { |
| 407 | a.handleIlinkMessage(msg) |
| 408 | } |
| 409 | } |
| 410 | return result.Updates, nil |
| 411 | } |
| 412 | |
| 413 | func (a *adapter) logPollHealth(result ilinkResponse) { |
| 414 | shouldLog := len(result.Updates) > 0 || len(result.Msgs) > 0 |
| 415 | a.mu.Lock() |
| 416 | if !shouldLog && time.Since(a.lastPollLog) >= 5*time.Minute { |
| 417 | shouldLog = true |
| 418 | } |
| 419 | if shouldLog { |
| 420 | a.lastPollLog = time.Now() |
| 421 | } |
| 422 | a.mu.Unlock() |
| 423 | if !shouldLog { |
| 424 | return |
| 425 | } |
| 426 | a.logger.Info("weixin getupdates heartbeat", |
| 427 | "updates", len(result.Updates), |
| 428 | "msgs", len(result.Msgs), |
| 429 | "has_more", result.HasMore, |
| 430 | "timeout_ms", result.LongpollingTimeoutMs) |
| 431 | } |
| 432 | |
| 433 | // handleUpdate 处理单条微信更新消息。 |
| 434 | func (a *adapter) handleUpdate(upd ilinkUpdate) { |
| 435 | if upd.UpdateType != "message" { |
| 436 | a.logger.Info("weixin update ignored", "reason", "non_message", "update_type", upd.UpdateType) |
| 437 | return |
| 438 | } |
| 439 | |
| 440 | m := upd.Message |
| 441 | chatType := bot.ChatDM |
| 442 | if m.ChatType == "group" { |
| 443 | chatType = bot.ChatGroup |
| 444 | } |
| 445 | |
| 446 | ib := bot.InboundMessage{ |
| 447 | Platform: bot.PlatformWeixin, |
| 448 | ChatType: chatType, |
| 449 | ChatID: m.ChatID, |
| 450 | UserID: m.From.UserID, |
| 451 | UserName: m.From.UserName, |
| 452 | Text: m.Text, |
| 453 | MessageID: string(m.MessageID), |
| 454 | } |
| 455 | |
| 456 | select { |
| 457 | case a.msgCh <- ib: |
| 458 | a.logger.Info("weixin inbound queued", "source", "update", "chat_type", chatType, "chat", logHash(ib.ChatID), "user", logHash(ib.UserID), "message", logHash(ib.MessageID), "text_chars", len([]rune(ib.Text))) |
| 459 | default: |
| 460 | a.logger.Warn("weixin message channel full") |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | func (a *adapter) handleIlinkMessage(m ilinkMessage) { |
| 465 | if m.FromUserID == "" || m.FromUserID == a.accountID() { |
| 466 | a.logger.Info("weixin message ignored", "reason", "self_or_missing_sender", "from", logHash(m.FromUserID), "message", logHash(string(m.MessageID))) |
| 467 | return |
| 468 | } |
| 469 | text := extractIlinkText(m.ItemList) |
| 470 | if text == "" { |
| 471 | a.logger.Info("weixin message ignored", "reason", "empty_text", "from", logHash(m.FromUserID), "message", logHash(string(m.MessageID))) |
| 472 | return |
| 473 | } |
| 474 | chatType, chatID := guessIlinkChat(m, a.accountID()) |
| 475 | if chatID == "" { |
| 476 | a.logger.Info("weixin message ignored", "reason", "missing_chat", "from", logHash(m.FromUserID), "message", logHash(string(m.MessageID))) |
| 477 | return |
| 478 | } |
| 479 | if m.ContextToken != "" { |
| 480 | a.setContextToken(chatID, m.ContextToken) |
| 481 | } |
| 482 | ib := bot.InboundMessage{ |
| 483 | Platform: bot.PlatformWeixin, |
| 484 | ChatType: chatType, |
| 485 | ChatID: chatID, |
| 486 | UserID: m.FromUserID, |
| 487 | UserName: m.FromUserID, |
| 488 | Text: text, |
| 489 | MessageID: string(m.MessageID), |
| 490 | } |
| 491 | select { |
| 492 | case a.msgCh <- ib: |
| 493 | a.logger.Info("weixin inbound queued", "source", "message", "chat_type", chatType, "chat", logHash(ib.ChatID), "user", logHash(ib.UserID), "message", logHash(ib.MessageID), "text_chars", len([]rune(ib.Text))) |
| 494 | default: |
| 495 | a.logger.Warn("weixin message channel full") |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | func logHash(id string) string { |
| 500 | if id == "" { |
| 501 | return "" |
| 502 | } |
| 503 | sum := sha256.Sum256([]byte(id)) |
| 504 | return hex.EncodeToString(sum[:])[:12] |
| 505 | } |
| 506 | |
| 507 | func extractIlinkText(items []struct { |
| 508 | Type int `json:"type"` |
| 509 | TextItem struct { |
| 510 | Text string `json:"text"` |
| 511 | } `json:"text_item"` |
| 512 | }) string { |
| 513 | var out []string |
| 514 | for _, item := range items { |
| 515 | if item.Type == weixinItemText && item.TextItem.Text != "" { |
| 516 | out = append(out, item.TextItem.Text) |
| 517 | } |
| 518 | } |
| 519 | return strings.TrimSpace(strings.Join(out, "\n")) |
| 520 | } |
| 521 | |
| 522 | func guessIlinkChat(m ilinkMessage, accountID string) (bot.ChatType, string) { |
| 523 | roomID := firstNonEmptyString(m.RoomID, m.ChatRoomID) |
| 524 | if roomID != "" { |
| 525 | return bot.ChatGroup, roomID |
| 526 | } |
| 527 | if m.ToUserID != "" && accountID != "" && m.ToUserID != accountID && m.MsgType == 1 { |
| 528 | return bot.ChatGroup, m.ToUserID |
| 529 | } |
| 530 | return bot.ChatDM, m.FromUserID |
| 531 | } |
| 532 | |
| 533 | func setIlinkHeaders(req *http.Request, token string, body []byte) { |
| 534 | req.Header.Set("Content-Type", "application/json") |
| 535 | req.Header.Set("AuthorizationType", "ilink_bot_token") |
| 536 | req.Header.Set("Authorization", "Bearer "+token) |
| 537 | req.Header.Set("Content-Length", fmt.Sprintf("%d", len(body))) |
| 538 | req.Header.Set("X-WECHAT-UIN", randomWechatUIN()) |
| 539 | req.Header.Set("iLink-App-Id", ilinkAppID) |
| 540 | req.Header.Set("iLink-App-ClientVersion", fmt.Sprintf("%d", ilinkClientVersion)) |
| 541 | } |
| 542 | |
| 543 | func randomWechatUIN() string { |
| 544 | var b [4]byte |
| 545 | if _, err := rand.Read(b[:]); err != nil { |
| 546 | return base64.StdEncoding.EncodeToString(fmt.Appendf(nil, "%d", time.Now().UnixNano())) |
| 547 | } |
| 548 | return base64.StdEncoding.EncodeToString(fmt.Appendf(nil, "%d", uint32(b[0])<<24|uint32(b[1])<<16|uint32(b[2])<<8|uint32(b[3]))) |
| 549 | } |
| 550 | |
| 551 | func firstNonEmptyString(vals ...string) string { |
| 552 | for _, v := range vals { |
| 553 | if v != "" { |
| 554 | return v |
| 555 | } |
| 556 | } |
| 557 | return "" |
| 558 | } |
| 559 | |
| 560 | // sendMessage 使用微信 iLink sendmessage API 发送消息。 |
| 561 | func (a *adapter) sendMessage(ctx context.Context, msg bot.OutboundMessage) (bot.SendResult, error) { |
| 562 | tok := a.token() |
| 563 | if tok == "" { |
| 564 | return bot.SendResult{}, a.tokenMissingError() |
| 565 | } |
| 566 | |
| 567 | url := a.apiBase() + sendMessagePath |
| 568 | |
| 569 | payload := map[string]any{ |
| 570 | "base_info": map[string]string{"channel_version": ilinkChannelVersion}, |
| 571 | "msg": map[string]any{ |
| 572 | "from_user_id": "", |
| 573 | "to_user_id": msg.ChatID, |
| 574 | "client_id": fmt.Sprintf("reasonix-%d", time.Now().UnixNano()), |
| 575 | "message_type": weixinMsgTypeBot, |
| 576 | "message_state": weixinMsgStateDone, |
| 577 | "item_list": []map[string]any{ |
| 578 | {"type": weixinItemText, "text_item": map[string]string{"text": msg.Text}}, |
| 579 | }, |
| 580 | }, |
| 581 | } |
| 582 | if contextToken := a.contextToken(msg.ChatID); contextToken != "" { |
| 583 | if m, ok := payload["msg"].(map[string]any); ok { |
| 584 | m["context_token"] = contextToken |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | body, _ := json.Marshal(payload) |
| 589 | req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewBuffer(body)) |
| 590 | if err != nil { |
| 591 | return bot.SendResult{}, err |
| 592 | } |
| 593 | setIlinkHeaders(req, tok, body) |
| 594 | |
| 595 | resp, err := weixinHTTPClient.Do(req) |
| 596 | if err != nil { |
| 597 | return bot.SendResult{}, err |
| 598 | } |
| 599 | defer resp.Body.Close() |
| 600 | |
| 601 | var result struct { |
| 602 | Ret int `json:"ret"` |
| 603 | Errcode int `json:"errcode"` |
| 604 | Errmsg string `json:"errmsg"` |
| 605 | MessageID ilinkString `json:"message_id"` |
| 606 | } |
| 607 | respBody, _ := io.ReadAll(resp.Body) |
| 608 | if err := json.Unmarshal(respBody, &result); err != nil { |
| 609 | return bot.SendResult{}, err |
| 610 | } |
| 611 | if result.Ret != 0 || result.Errcode != 0 { |
| 612 | if a.contextToken(msg.ChatID) != "" { |
| 613 | a.setContextToken(msg.ChatID, "") |
| 614 | return a.sendMessage(ctx, msg) |
| 615 | } |
| 616 | return bot.SendResult{}, fmt.Errorf("sendmessage error ret=%d errcode=%d: %s", result.Ret, result.Errcode, result.Errmsg) |
| 617 | } |
| 618 | |
| 619 | return bot.SendResult{MessageID: string(result.MessageID)}, nil |
| 620 | } |
| 621 | |
| 622 | // sendTyping 发送"正在输入"状态。 |
| 623 | func (a *adapter) sendTyping(ctx context.Context, chatID string) error { |
| 624 | tok := a.token() |
| 625 | if tok == "" { |
| 626 | return a.tokenMissingError() |
| 627 | } |
| 628 | |
| 629 | url := a.apiBase() + sendTypingPath |
| 630 | |
| 631 | payload := map[string]any{ |
| 632 | "base_info": map[string]string{"channel_version": ilinkChannelVersion}, |
| 633 | "ilink_user_id": chatID, |
| 634 | "status": 1, |
| 635 | } |
| 636 | if contextToken := a.contextToken(chatID); contextToken != "" { |
| 637 | payload["context_token"] = contextToken |
| 638 | } |
| 639 | body, _ := json.Marshal(payload) |
| 640 | |
| 641 | req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewBuffer(body)) |
| 642 | if err != nil { |
| 643 | return err |
| 644 | } |
| 645 | setIlinkHeaders(req, tok, body) |
| 646 | |
| 647 | resp, err := weixinHTTPClient.Do(req) |
| 648 | if err != nil { |
| 649 | return err |
| 650 | } |
| 651 | defer resp.Body.Close() |
| 652 | |
| 653 | var result struct { |
| 654 | Ret int `json:"ret"` |
| 655 | Errcode int `json:"errcode"` |
| 656 | Errmsg string `json:"errmsg"` |
| 657 | } |
| 658 | if err := json.NewDecoder(resp.Body).Decode(&result); err != nil { |
| 659 | return err |
| 660 | } |
| 661 | if result.Ret != 0 || result.Errcode != 0 { |
| 662 | return fmt.Errorf("sendtyping error ret=%d errcode=%d: %s", result.Ret, result.Errcode, result.Errmsg) |
| 663 | } |
| 664 | |
| 665 | return nil |
| 666 | } |
| 667 |