refactor(src): split oversized modules

src/web/auto-reply/monitor/message-line.ts

@@ -0,0 +1,42 @@
+import { resolveMessagePrefix } from "../../../agents/identity.js";
+import { formatAgentEnvelope } from "../../../auto-reply/envelope.js";
+import type { loadConfig } from "../../../config/config.js";
+import type { WebInboundMsg } from "../types.js";
+
+export function formatReplyContext(msg: WebInboundMsg) {
+  if (!msg.replyToBody) return null;
+  const sender = msg.replyToSender ?? "unknown sender";
+  const idPart = msg.replyToId ? ` id:${msg.replyToId}` : "";
+  return `[Replying to ${sender}${idPart}]\n${msg.replyToBody}\n[/Replying]`;
+}
+
+export function buildInboundLine(params: {
+  cfg: ReturnType<typeof loadConfig>;
+  msg: WebInboundMsg;
+  agentId: string;
+}) {
+  const { cfg, msg, agentId } = params;
+  // WhatsApp inbound prefix: channels.whatsapp.messagePrefix > legacy messages.messagePrefix > identity/defaults
+  const messagePrefix = resolveMessagePrefix(cfg, agentId, {
+    configured: cfg.channels?.whatsapp?.messagePrefix,
+    hasAllowFrom: (cfg.channels?.whatsapp?.allowFrom?.length ?? 0) > 0,
+  });
+  const prefixStr = messagePrefix ? `${messagePrefix} ` : "";
+  const senderLabel =
+    msg.chatType === "group"
+      ? `${msg.senderName ?? msg.senderE164 ?? "Someone"}: `
+      : "";
+  const replyContext = formatReplyContext(msg);
+  const baseLine = `${prefixStr}${senderLabel}${msg.body}${
+    replyContext ? `\n\n${replyContext}` : ""
+  }`;
+
+  // Wrap with standardized envelope for the agent.
+  return formatAgentEnvelope({
+    channel: "WhatsApp",
+    from:
+      msg.chatType === "group" ? msg.from : msg.from?.replace(/^whatsapp:/, ""),
+    timestamp: msg.timestamp,
+    body: baseLine,
+  });
+}