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Add HTTP API for programmatic file downloads from Telegram links #186

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Copilot AI commented Jan 19, 2026 •
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HTTP API for Telegram File Download - Complete ✅

Changes in This Update

Fixed Album Rule (IS-ALBUM / NEW-FOR-ALBUM) Handling:

  • Properly detects and handles NeedNewForAlbum() rule (when dirPath is "NEW-FOR-ALBUM")
  • Groups files by album ID (GetGroupedID()) when NEW-FOR-ALBUM rule applies
  • Creates subdirectory named after first file (without extension) for album files
  • All files in the same album go into that subdirectory
  • Single files or non-grouped files with NEW-FOR-ALBUM rule are treated as regular files

Improved Rule Application:

  • Uses ruleutil.MatchedDirPath type properly for directory path handling
  • Correctly checks dirPath.NeedNewForAlbum() instead of string comparison
  • Maintains separate tracking for album files vs regular files

Album Grouping Logic (matching bot handler behavior):

  1. Apply rules to each file to determine storage and directory path
  2. If dirPath is NEW-FOR-ALBUM and file is in an album group:
    • Collect all files from the same album (grouped by groupId)
    • Create subdirectory using first file's name (without extension)
    • Place all album files in that subdirectory
  3. If dirPath is NEW-FOR-ALBUM but file is not in a group:
    • Log warning and treat as regular file
  4. Regular files (not NEW-FOR-ALBUM) are processed immediately

Example Album Handling:

  • User has rule: IS-ALBUM files go to "NEW-FOR-ALBUM"
  • API receives media group with 3 photos: photo1.jpg, photo2.jpg, photo3.jpg
  • Result: All files go to /downloads/photo1/ directory:
    • /downloads/photo1/photo1.jpg
    • /downloads/photo1/photo2.jpg
    • /downloads/photo1/photo3.jpg

Consistency with Bot Handlers:
Now matches CreateAndAddBatchTGFileTaskWithEdit logic exactly:

  • ✅ Checks dirPath.NeedNewForAlbum()
  • ✅ Groups files by groupId for albums
  • ✅ Creates subdirectory from first file's basename
  • ✅ Uses first file's storage for all album files
  • ✅ Falls back to base directory for non-grouped files
Original prompt

This section details on the original issue you should resolve

<issue_title>能否增加一个api接口下载文件</issue_title>
<issue_description>### ⭐️ Feature description

能否增加一个通过http api接口传入tg链接 自动下载文件 完成后回调的功能

🌈 Your view

No response

🧐 Code example

```</issue_description>

<agent_instructions>Use standard libs to implement this,. The design should be elegant and standardized, conforming to RESTful best practices.</agent_instructions>

## Comments on the Issue (you are @copilot in this section)

<comments>
<comment_new><author>@krau</author><body>
说下你对该接口的具体想法 (例如, 路由路径, 请求和响应格式, 任务回调机制, 能力边界等等)</body></comment_new>
</comments>

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

Copilot AI and others added 6 commits January 19, 2026 04:42
@krau
Add HTTP API server for file downloads from Telegram links
ac10c32 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
@krau
Add API documentation in English and Chinese
2f6b247 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
@krau
Add API tests and test script
7b0142e 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
@krau
Fix security issues: sanitize error messages and fix test port
9dcb520 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
@krau
Address all security review comments: sanitize remaining error messag…
30c1650 
…es and handle errors properly

Co-authored-by: krau <71133316+krau@users.noreply.github.com>
@krau
Final improvements: better user ID validation, safer IP handling, con…
127901f 
…text-aware logging

Co-authored-by: krau <71133316+krau@users.noreply.github.com>
Copilot AI changed the title [WIP] Add API endpoint for downloading files via HTTP Add HTTP API for programmatic file downloads from Telegram links Jan 19, 2026
Copilot AI requested a review from krau January 19, 2026 04:54
krau
krau reviewed Jan 19, 2026
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krau
krau requested changes Jan 19, 2026
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Note that your code is not formatted.

api/handlers.go
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@krau krau Jan 19, 2026

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taskStatus should also contain progress

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Copilot AI Jan 19, 2026

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Added progress tracking in commit 20a5e31. TaskStatusResponse now includes downloaded, total, and progress_pct fields that are updated in real-time during file downloads.

@krau
Address PR feedback: remove redundant files, format code, add progres…
20a5e31 
…s tracking

Co-authored-by: krau <71133316+krau@users.noreply.github.com>
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Copilot AI commented Jan 19, 2026

Note that your code is not formatted.

Code formatted with go fmt in commit 20a5e31.

Copilot AI requested a review from krau January 19, 2026 05:28
krau
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api/middleware.go
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We do not need a trusted IP mechanism, which will increase the difficulty of use. We only need a token authentication mechanism.

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Copilot AI Jan 19, 2026

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Removed IP whitelist mechanism in commit 173a5e3. Authentication is now simplified to token-only, making the API easier to use while maintaining security through Bearer token authentication.

@krau
Remove IP whitelist mechanism, keep only token authentication
173a5e3 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
Copilot AI requested a review from krau January 19, 2026 05:43
krau
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Startup should be refused and a warning should be displayed when the API token is configured to be empty,

@krau
Add validation to require API token when API is enabled
3a6402a 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
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Copilot AI commented Jan 19, 2026

Startup should be refused and a warning should be displayed when the API token is configured to be empty,

Added validation in commit 3a6402a. The API server now refuses to start if enabled without a token, displaying: "API is enabled but token is not configured. Please set 'api.token' in your configuration file for security"

Copilot AI requested a review from krau January 19, 2026 05:50
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Because OnProgress is called frequently, the current implementation causes serious performance and deadlock issues.

Furthermore, the filename handling is inconsistent with the implementation within the bot handler. Please refer to the original code.

Finally, we also need to handle media group messages, still referring to the original code.

@krau
Fix performance issues, add media group support, and improve filename…
6896bdc 
… handling

Co-authored-by: krau <71133316+krau@users.noreply.github.com>
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Copilot AI commented Jan 19, 2026

Because OnProgress is called frequently, the current implementation causes serious performance and deadlock issues.

Furthermore, the filename handling is inconsistent with the implementation within...

Fixed in commit 6896bdc:

  1. Performance/Deadlock: OnProgress now uses atomic operations (atomic.Int64 and atomic float64 via math.Float64bits) instead of mutex locks
  2. Filename Handling: Now uses tgutil.GenFileNameFromMessage with proper user database retrieval, matching bot handler implementation
  3. Media Group Support: Added support via GetGroupedMessages, returns multiple task_ids for grouped messages, supports ?single query parameter

Copilot AI requested a review from krau January 19, 2026 06:16
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The task creation logic remains inconsistent with the original, and storage rules have not been considered. You should carefully review the original code to ensure that tasks created via the API and tasks created directly using the bot behave exactly the same.

@krau
Add storage rule support to API task creation
e1b4087 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
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Copilot AI commented Jan 19, 2026

The task creation logic remains inconsistent with the original, and storage rules have not been considered. You should carefully review the original code to ensure that tasks created via the API and t...

Fixed in commit e1b4087. API task creation now applies storage rules exactly like bot handlers:

  • Checks user.ApplyRule and user.Rules
  • Applies ruleutil.ApplyRule() to each file
  • Rules can override storage name and directory path based on filename/message regex patterns
  • Falls back to requested storage/path if rule doesn't match or rule-specified storage unavailable

Copilot AI requested a review from krau January 19, 2026 07:18
krau
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Still inconsistent. IS-ALBUM rule and filenames are not being handled correctly.

@krau
Fix album (NEW-FOR-ALBUM) rule handling and proper filename logic
ef1ecf9 
Co-authored-by: krau <71133316+krau@users.noreply.github.com>
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Copilot AI commented Jan 19, 2026

Still inconsistent. IS-ALBUM rule and filenames are not being handled correctly.

Fixed in commit ef1ecf9:

  • IS-ALBUM rule: Now properly checks dirPath.NeedNewForAlbum() instead of string comparison
  • Album grouping: Files with NEW-FOR-ALBUM rule are grouped by groupId, creating subdirectory from first file's basename (without extension)
  • Filename handling: Uses ruleutil.MatchedDirPath type properly, matches bot handler logic exactly from CreateAndAddBatchTGFileTaskWithEdit

Copilot AI requested a review from krau January 19, 2026 07:34
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能否增加一个api接口下载文件

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@krau