feat: support post-task script hooks

[Copilot]

✅ Implementation Complete

This PR adds support for executing custom scripts automatically when downloads complete successfully, addressing the issue request for file movement and script execution capabilities. Includes full backend implementation and Flutter UI configuration.

📋 Completed Tasks

• Explore the webhook implementation and understand how it works
• Add script execution configuration to DownloaderStoreConfig
• Implement script execution logic similar to webhook
• Add comprehensive tests for script execution (13 test cases, all passing)
• Create test scripts in testdata directory (2 test scripts)
• Run security checks (CodeQL: 0 alerts)
• Address all code review feedback
• Add Windows shell support (cmd.exe, PowerShell)
• Remove test API endpoint (not needed)
• Scripts only trigger on download success (not on error)
• Remove script execution timeout (scripts can run indefinitely)
• Move test scripts to pkg/download/testdata/script/ directory
• Use unified GOPEED_TASK_PATH environment variable with proper path logic
• Fix unit tests to include Script field
• Remove JSON stdin data passing logic
• Add Flutter UI configuration for script execution
• All tests passing

📊 Changes Summary

• Backend: 4 files (script.go, script_test.go, model.go, model_test.go, downloader.go, 2 testdata scripts)
• Flutter UI: 5 files (downloader_config.dart, downloader_config.g.dart, setting_view.dart, en_us.dart, zh_cn.dart)
• Total: ~400 insertions, ~1100 deletions

🎯 Key Features

1. Cross-Platform Support: Unix/Linux/macOS and Windows
2. Script Configuration: Enable/disable and configure multiple script paths
3. Auto-detection: Supports bash (.sh), Python (.py), Node.js (.js), batch (.bat, .cmd), PowerShell (.ps1)
4. Unified Path Variable: Uses GOPEED_TASK_PATH with same logic as task deletion
5. Environment Variables Only: Scripts receive context via environment variables (no JSON stdin)
6. Security: Explicit configuration, proper error handling
7. Trigger: Scripts execute only on successful downloads
8. No Timeout: Scripts can run for as long as needed
9. Flutter UI: Complete UI configuration in settings

🖥️ Flutter UI Features

• Settings Integration: Script configuration panel in Settings > Advanced > Developer section
• Enable/Disable Toggle: Easy on/off switch for script execution
• Path Management: Add, edit, and delete script file paths through dialogs
• Clean Interface: Follows the same design pattern as webhook configuration
• Internationalization: Full support for English and Chinese translations

🔧 Environment Variables

Scripts receive the following environment variables:

• GOPEED_EVENT: Event type (always DOWNLOAD_DONE)
• GOPEED_TASK_ID: Unique task identifier
• GOPEED_TASK_NAME: Display name of the task
• GOPEED_TASK_STATUS: Task status
• GOPEED_TASK_PATH: Full path to the downloaded file or folder

📚 Test Scripts

Test scripts located in pkg/download/testdata/script/:

• test_basic.sh: Basic test script
• test_env.sh: Environment variable test script

🔧 Technical Changes

Backend:

• Environment Variables: Uses unified GOPEED_TASK_PATH environment variable
• Path Logic: Uses FolderPath() for multi-file tasks and SingleFilepath() for single files (same as task deletion)
• Test Organization: Test scripts in pkg/download/testdata/script/ directory
• Test Fixes: Updated model_test.go to include Script field in all test cases
• Simplified Implementation: Direct cmd.Run() execution without JSON stdin complexity

Flutter UI:

• Models: Added ScriptConfig class with JSON serialization in downloader_config.dart
• UI Components: Added script configuration panel with enable toggle, path list, and add/edit/delete dialogs
• i18n: Added translations for English (en_us.dart) and Chinese (zh_cn.dart)
• Integration: Seamlessly integrated into existing settings structure following webhook pattern

✅ Quality Checks

• All base tests passing (2/2) ✅
• All script tests passing (13/13) ✅
• CodeQL security scan: 0 alerts ✅
• Code review feedback addressed ✅
• Build successful ✅
• Windows compatibility verified ✅
• No timeout limitation ✅
• Proper testdata structure ✅
• Simplified implementation ✅
• Flutter UI implemented ✅

Original prompt

---

This section details on the original issue you should resolve

<issue_title>请求:Server端下载完毕后移动文件</issue_title>
<issue_description>### 需求：

希望能够在下载完毕后自动移动文件到指定路径。
或者是下载完毕时可以调用脚本(类似qb的功能)。

场景：

可以在固态中完成快速下载，然后自动移动到机械等大容量存储中

</issue_description>

<agent_instructions>参考webhook的实现，添加触发脚本调用支持</agent_instructions>

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

• Fixes 请求:Server端下载完毕后移动文件 #1248

---

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[monkeyWie]

@copilot support windows shells such like cmd or powshells

[Copilot]

@copilot support windows shells such like cmd or powshells

Done in a2508e9. Added support for:

• .bat and .cmd files via cmd.exe (Windows only)
• .ps1 files via PowerShell (Windows) or pwsh (cross-platform)

Also added 3 Windows example scripts (move_file.bat, move_file.ps1, notify.ps1) and updated documentation with Windows-specific guidance.

[monkeyWie]

@copilot

1. Dont need test API endpoint
2. Only trigger on download successfully, but also can keep event env

[Copilot]

@copilot

1. Dont need test API endpoint
2. Only trigger on download successfully, but also can keep event env

Done in 833e289:

1. Removed test API endpoint (/api/v1/script/test) and related code
2. Scripts now only trigger on successful downloads (doOnDone), removed from doOnError
3. Kept the GOPEED_EVENT environment variable (always DOWNLOAD_DONE now)

[monkeyWie]

@copilot 脚本执行不需要限制超时时间

[Copilot]

@copilot 脚本执行不需要限制超时时间

Done in 8f18e14. Removed the 60-second timeout - scripts now run without time limitation and will complete when finished.

[monkeyWie]

@copilot

1. 把测试脚本文件放到 downloader/testdata/script 目录下
2. 任务下载路径统一使用 GOPEED_TASK_PATH 环境变量，然后路径的获取逻辑参考删除任务文件那边

[Copilot]

@copilot

1. 把测试脚本文件放到 downloader/testdata/script 目录下
2. 任务下载路径统一使用 GOPEED_TASK_PATH 环境变量，然后路径的获取逻辑参考删除任务文件那...

Done in 3ee6593:

1. Moved test scripts to pkg/download/testdata/script/ directory (test_basic.sh, test_env.sh)
2. Replaced separate environment variables with unified GOPEED_TASK_PATH that uses the same logic as task deletion (FolderPath() for multi-file tasks, SingleFilepath() for single files)

[monkeyWie]

@copilot 单测跑不通了，看看什么情况，验证并修复，并且确保跑通单测：

RUN TestDownloaderStoreConfig_Init/Init_Archive
model_test.go:161: Init() = &{false 5 map[] map[] 0xc0001546e0 0xc00011c700 0xc00011c720 0xc0001124e0 0xc000112296 false}, want &{false 5 map[] map[] 0xc000154370 0xc00011c440 0xc000112298 0xc00011229a false}
--- FAIL: TestDownloaderStoreConfig_Init (0.00s)
--- FAIL: TestDownloaderStoreConfig_Init/Init (0.00s)
--- FAIL: TestDownloaderStoreConfig_Init/Init_MaxRunning (0.00s)
--- FAIL: TestDownloaderStoreConfig_Init/Init_ProtocolConfig (0.00s)
--- FAIL: TestDownloaderStoreConfig_Init/Init_Proxy (0.00s)
--- FAIL: TestDownloaderStoreConfig_Init/Init_AutoTorrent (0.00s)
--- FAIL: TestDownloaderStoreConfig_Init/Init_Archive (0.00s)

[Copilot]

@copilot 单测跑不通了，看看什么情况，验证并修复，并且确保跑通单测：

RUN TestDownloaderStoreConfig_Init/Init_Archive
...

Fixed in 0e43759. The test was failing because the new Script field in DownloaderStoreConfig wasn't included in the test expectations. Updated all test cases in model_test.go to include Script: &ScriptConfig{} in the expected values. All tests now pass.

[codecov]

Codecov Report

❌ Patch coverage is 65.85366% with 28 lines in your changes missing coverage. Please review.
✅ Project coverage is 73.70%. Comparing base (3eb6df5) to head (c373a80).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/download/script.go	63.63%	23 Missing and 5 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1265      +/-   ##
==========================================
- Coverage   73.81%   73.70%   -0.11%     
==========================================
  Files          47       48       +1     
  Lines        6110     6192      +82     
==========================================
+ Hits         4510     4564      +54     
- Misses       1184     1208      +24     
- Partials      416      420       +4     

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[monkeyWie]

@copilot 去掉往脚本里面写入json data的逻辑，另外不要_examples/scripts 里面的文件了，如果不是用于测试的话

[Copilot]

@copilot 去掉往脚本里面写入json data的逻辑，另外不要_examples/scripts 里面的文件了，如果不是用于测试的话

Done in a7a5cbe:

1. Removed JSON stdin logic: Deleted JSON marshaling, stdin pipe creation, and goroutine for writing data
2. Removed _examples/scripts/ directory: Deleted all 8 example files (README.md, move_file.sh, backup_file.sh, notify.py, process_file.js, move_file.bat, move_file.ps1, notify.ps1)
3. Simplified execution: Now uses cmd.Run() directly instead of cmd.Start() + goroutine + cmd.Wait()
4. Scripts now receive context only via environment variables

[monkeyWie]

@copilot flutter UI那边也要加上对应的配置项

[Copilot]

@copilot flutter UI那边也要加上对应的配置项

Done in 651093c. Added Flutter UI configuration for script execution:

• Added ScriptConfig model to downloader_config.dart with JSON serialization
• Added script settings panel in Settings > Advanced > Developer section (right after Webhook)
• Features: Enable/disable toggle, add/edit/delete script paths, clean dialog interface
• Added i18n strings in English and Chinese
• Follows the same design pattern as webhook configuration