fix: make forwardToStorage fully dynamic based on fileType

- Replace forceDocument boolean with fileType string in forwardToStorage
- Dynamically call matching sendPhoto, sendAudio, sendVideo, sendVoice, sendAnimation, sendSticker, or sendDocument Telegraf API method
- Correctly extract uploaded file details based on what Telegram returned
- Fixes IMAGE_PROCESS_FAILED 500 error when uploading ogg audio, video, sticker, or voice notes via HTTP
- Update upload.ts, bot.ts, and test suites to match the new dynamic signature

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/bot.ts

@@ -96,7 +96,7 @@ export const startBot = async (): Promise<Telegraf<Context>> => {
             return;
           }
 
-          const result = await forwardToStorage(file_id, fileName);
+          const result = await forwardToStorage(file_id, fileName, fileType);
           const publicId = nanoid();
 
           const uploaded = {

src/routes/upload.ts

@@ -88,11 +88,7 @@ const handleMultipartUpload = async (req: Request): Promise<Response> => {
       return Response.json({ error: `File size exceeds ${fileType} limit` }, { status: 400 });
     }
 
-    const isDocument =
-      finalFileName.endsWith('.pdf') ||
-      finalFileName.endsWith('.txt') ||
-      !['photo', 'video', 'audio', 'voice', 'animation'].includes(fileType);
-    const result = await forwardToStorage(fileBuffer, finalFileName, isDocument);
+    const result = await forwardToStorage(fileBuffer, finalFileName, fileType);
     const bot = getBot();
     const fileInfo = (await bot.telegram.getFile(result.telegramFileId)) as any;
 
@@ -199,11 +195,7 @@ const handleJSONUpload = async (req: Request): Promise<Response> => {
       return Response.json({ error: `File size exceeds ${fileType} limit` }, { status: 400 });
     }
 
-    const isDocument =
-      finalFileName.endsWith('.pdf') ||
-      finalFileName.endsWith('.txt') ||
-      !['photo', 'video', 'audio', 'voice', 'animation'].includes(fileType);
-    const result = await forwardToStorage(fileBytes, finalFileName, isDocument);
+    const result = await forwardToStorage(fileBytes, finalFileName, fileType);
     const bot = getBot();
     const fileInfo = (await bot.telegram.getFile(result.telegramFileId)) as any;
 

src/utils/telegram.ts

@@ -20,15 +20,50 @@ interface TelegramFileInfo {
 export const forwardToStorage = async (
   fileChunk: any,
   fileName: string,
-  forceDocument = false,
+  fileType: string,
 ): Promise<ForwardResult> => {
   try {
-    const caption = forceDocument ? `📁 ${fileName}` : fileName;
     const filePayload = { source: fileChunk, filename: fileName };
-    const result: any = forceDocument
-      ? await bot.telegram.sendDocument(config.storageChatId, filePayload, { caption })
-      : await bot.telegram.sendPhoto(config.storageChatId, filePayload, { caption });
-    const uploadedFile = forceDocument ? result.document : result.photo?.slice(-1)[0];
+    let result: any;
+
+    if (fileType === 'photo') {
+      result = await bot.telegram.sendPhoto(config.storageChatId, filePayload, {
+        caption: fileName,
+      });
+    } else if (fileType === 'audio') {
+      result = await bot.telegram.sendAudio(config.storageChatId, filePayload, {
+        caption: fileName,
+      });
+    } else if (fileType === 'video') {
+      result = await bot.telegram.sendVideo(config.storageChatId, filePayload, {
+        caption: fileName,
+      });
+    } else if (fileType === 'voice') {
+      result = await bot.telegram.sendVoice(config.storageChatId, filePayload, {
+        caption: fileName,
+      });
+    } else if (fileType === 'animation') {
+      result = await bot.telegram.sendAnimation(config.storageChatId, filePayload, {
+        caption: fileName,
+      });
+    } else if (fileType === 'sticker') {
+      result = await bot.telegram.sendSticker(config.storageChatId, filePayload);
+    } else {
+      result = await bot.telegram.sendDocument(config.storageChatId, filePayload, {
+        caption: `📁 ${fileName}`,
+      });
+    }
+
+    let uploadedFile: any;
+    if (result.document) uploadedFile = result.document;
+    else if (result.photo) uploadedFile = result.photo?.slice(-1)[0];
+    else if (result.video) uploadedFile = result.video;
+    else if (result.audio) uploadedFile = result.audio;
+    else if (result.voice) uploadedFile = result.voice;
+    else if (result.animation) uploadedFile = result.animation;
+    else if (result.sticker) uploadedFile = result.sticker;
+    else if (result.video_note) uploadedFile = result.video_note;
+    else uploadedFile = result[fileType];
 
     logger.info('File forwarded to storage', { fileName, message: result.message_id });