refactor: streamline outbound payload handling

src/infra/outbound/payloads.ts

@@ -0,0 +1,44 @@
+import type { ReplyPayload } from "../../auto-reply/types.js";
+
+export type NormalizedOutboundPayload = {
+  text: string;
+  mediaUrls: string[];
+};
+
+export type OutboundPayloadJson = {
+  text: string;
+  mediaUrl: string | null;
+  mediaUrls?: string[];
+};
+
+export function normalizeOutboundPayloads(
+  payloads: ReplyPayload[],
+): NormalizedOutboundPayload[] {
+  return payloads
+    .map((payload) => ({
+      text: payload.text ?? "",
+      mediaUrls:
+        payload.mediaUrls ?? (payload.mediaUrl ? [payload.mediaUrl] : []),
+    }))
+    .filter((payload) => payload.text || payload.mediaUrls.length > 0);
+}
+
+export function normalizeOutboundPayloadsForJson(
+  payloads: ReplyPayload[],
+): OutboundPayloadJson[] {
+  return payloads.map((payload) => ({
+    text: payload.text ?? "",
+    mediaUrl: payload.mediaUrl ?? null,
+    mediaUrls:
+      payload.mediaUrls ?? (payload.mediaUrl ? [payload.mediaUrl] : undefined),
+  }));
+}
+
+export function formatOutboundPayloadLog(
+  payload: NormalizedOutboundPayload,
+): string {
+  const lines: string[] = [];
+  if (payload.text) lines.push(payload.text.trimEnd());
+  for (const url of payload.mediaUrls) lines.push(`MEDIA:${url}`);
+  return lines.join("\n");
+}