feat: PIT Channel plugin v1.0.0 - complete implementation

src/outbound.ts

@@ -0,0 +1,118 @@
+/**
+ * Outbound 模块 - 消息发送
+ * @module outbound
+ */
+
+import type { SendResult } from "./types.js";
+import { chunkText } from "./utils/chunker.js";
+import { createLogger } from "./utils/logger.js";
+
+const MODULE = "outbound";
+
+// 外部 Gateway 管理器 - 由 channel.ts 注入
+let gatewayMap: Map<string, {
+  sendText: (to: string, content: string, replyTo?: string) => Promise<{ success: boolean; messageId?: string; error?: string }>;
+  sendMedia: (to: string, mediaUrl: string, text?: string, replyTo?: string) => Promise<{ success: boolean; messageId?: string; error?: string }>;
+}> | null = null;
+
+/**
+ * 设置 Gateway 映射（由 channel.ts 调用）
+ */
+export function setGatewayMap(map: Map<string, never>): void {
+  gatewayMap = map as unknown as typeof gatewayMap;
+}
+
+/**
+ * 发送文本消息
+ */
+export async function sendText(options: {
+  to: string;
+  text: string;
+  accountId: string;
+  replyToId?: string;
+}): Promise<SendResult> {
+  const { to, text, accountId, replyToId } = options;
+  const log = createLogger(MODULE);
+
+  try {
+    const gateway = gatewayMap?.get(accountId);
+    if (!gateway) {
+      return { messageId: "", error: "Gateway not available" };
+    }
+
+    // 获取分块限制
+    const chunkLimit = 4000;
+    const chunks = chunkText(text, { limit: chunkLimit, mode: "markdown" });
+
+    if (chunks.length === 1) {
+      const result = await gateway.sendText(to, text, replyToId);
+      return {
+        messageId: result.messageId ?? "",
+        error: result.error,
+      };
+    }
+
+    // 多块消息，逐块发送
+    const messageIds: string[] = [];
+    let lastError: string | undefined;
+
+    for (let i = 0; i < chunks.length; i++) {
+      const chunk = chunks[i];
+      const chunkSuffix = chunks.length > 1 ? `\n\n--- [${i + 1}/${chunks.length}] ---` : "";
+      const result = await gateway.sendText(to, chunk + chunkSuffix, replyToId);
+      
+      if (result.messageId) {
+        messageIds.push(result.messageId);
+      }
+      if (result.error) {
+        lastError = result.error;
+      }
+
+      // 块之间添加延迟
+      if (i < chunks.length - 1) {
+        await new Promise(resolve => setTimeout(resolve, 100));
+      }
+    }
+
+    return {
+      messageId: messageIds.join(","),
+      error: lastError,
+    };
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    log.error("Failed to send text", { to, error: message });
+    return { messageId: "", error: message };
+  }
+}
+
+/**
+ * 发送媒体消息
+ */
+export async function sendMedia(options: {
+  to: string;
+  text?: string;
+  mediaUrl: string;
+  accountId: string;
+  replyToId?: string;
+}): Promise<SendResult> {
+  const { to, text, mediaUrl, accountId, replyToId } = options;
+  const log = createLogger(MODULE);
+
+  try {
+    const gateway = gatewayMap?.get(accountId);
+    if (!gateway) {
+      return { messageId: "", error: "Gateway not available" };
+    }
+
+    const result = await gateway.sendMedia(to, mediaUrl, text, replyToId);
+    
+    return {
+      messageId: result.messageId ?? "",
+      error: result.error,
+    };
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    log.error("Failed to send media", { to, mediaUrl, error: message });
+    return { messageId: "", error: message };
+  }
+}