feat: refactor BlueBubbles media handling by introducing a dedicated media send function and optimizing message processing for media attachments

extensions/bluebubbles/src/media-send.ts

@@ -0,0 +1,120 @@
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+import type { ClawdbotConfig } from "clawdbot/plugin-sdk";
+
+import { sendBlueBubblesAttachment } from "./attachments.js";
+import { getBlueBubblesRuntime } from "./runtime.js";
+
+const HTTP_URL_RE = /^https?:\/\//i;
+
+function resolveLocalMediaPath(source: string): string {
+  if (!source.startsWith("file://")) return source;
+  try {
+    return fileURLToPath(source);
+  } catch {
+    throw new Error(`Invalid file:// URL: ${source}`);
+  }
+}
+
+function resolveFilenameFromSource(source?: string): string | undefined {
+  if (!source) return undefined;
+  if (source.startsWith("file://")) {
+    try {
+      return path.basename(fileURLToPath(source)) || undefined;
+    } catch {
+      return undefined;
+    }
+  }
+  if (HTTP_URL_RE.test(source)) {
+    try {
+      return path.basename(new URL(source).pathname) || undefined;
+    } catch {
+      return undefined;
+    }
+  }
+  const base = path.basename(source);
+  return base || undefined;
+}
+
+export async function sendBlueBubblesMedia(params: {
+  cfg: ClawdbotConfig;
+  to: string;
+  mediaUrl?: string;
+  mediaPath?: string;
+  mediaBuffer?: Uint8Array;
+  contentType?: string;
+  filename?: string;
+  caption?: string;
+  accountId?: string;
+}) {
+  const {
+    cfg,
+    to,
+    mediaUrl,
+    mediaPath,
+    mediaBuffer,
+    contentType,
+    filename,
+    caption,
+    accountId,
+  } = params;
+  const core = getBlueBubblesRuntime();
+
+  let buffer: Uint8Array;
+  let resolvedContentType = contentType ?? undefined;
+  let resolvedFilename = filename ?? undefined;
+
+  if (mediaBuffer) {
+    buffer = mediaBuffer;
+    if (!resolvedContentType) {
+      const hint = mediaPath ?? mediaUrl;
+      const detected = await core.media.detectMime({
+        buffer: Buffer.isBuffer(mediaBuffer) ? mediaBuffer : Buffer.from(mediaBuffer),
+        filePath: hint,
+      });
+      resolvedContentType = detected ?? undefined;
+    }
+    if (!resolvedFilename) {
+      resolvedFilename = resolveFilenameFromSource(mediaPath ?? mediaUrl);
+    }
+  } else {
+    const source = mediaPath ?? mediaUrl;
+    if (!source) {
+      throw new Error("BlueBubbles media delivery requires mediaUrl, mediaPath, or mediaBuffer.");
+    }
+    if (HTTP_URL_RE.test(source)) {
+      const fetched = await core.channel.media.fetchRemoteMedia({ url: source });
+      buffer = fetched.buffer;
+      resolvedContentType = resolvedContentType ?? fetched.contentType ?? undefined;
+      resolvedFilename = resolvedFilename ?? fetched.fileName;
+    } else {
+      const localPath = resolveLocalMediaPath(source);
+      const fs = await import("node:fs/promises");
+      const data = await fs.readFile(localPath);
+      buffer = new Uint8Array(data);
+      if (!resolvedContentType) {
+        const detected = await core.media.detectMime({
+          buffer: data,
+          filePath: localPath,
+        });
+        resolvedContentType = detected ?? undefined;
+      }
+      if (!resolvedFilename) {
+        resolvedFilename = resolveFilenameFromSource(localPath);
+      }
+    }
+  }
+
+  return sendBlueBubblesAttachment({
+    to,
+    buffer,
+    filename: resolvedFilename ?? "attachment",
+    contentType: resolvedContentType ?? undefined,
+    caption: caption ?? undefined,
+    opts: {
+      cfg,
+      accountId,
+    },
+  });
+}