Add self-hosted profile synchronization via Git/WebDAV #177

New Issue

MrUnknownDE · 2026-04-05T16:18:48+02:00

MrUnknownDE commented

2026-04-05 16:18:48 +02:00

Originally created by @loss-and-quick on 3/24/2026

Description

This PR implements self-hosted synchronization and backup capabilities for OrcaSlicer profiles and projects, addressing the lack of centralized configuration management.

Key Features Added:

Self-hosted Git synchronization using libgit2 for version-controlled profile storage
WebDAV synchronization as an alternative storage backend
Automatic conflict detection with manual resolution dialogs
Configurable sync settings including optional Git token authentication
UI integration in Preferences menu for enabling/disabling sync features
Field-level merge optimization to reduce unnecessary conflicts

What Issue This Addresses:
OrcaSlicer previously lacked a built-in mechanism for synchronizing user profiles, printer settings, and project configurations across multiple devices. Users had to manually copy configuration files or rely on third-party sync solutions, risking data loss and inconsistency.

New Dependencies:

Added libgit2 as a vendored dependency (in deps/LIBGIT2/)
Updated CMake configurations to detect and link against libgit2
No breaking changes to existing functionality; feature is opt-in

Breaking Changes & Considerations:

None - the feature is completely optional and disabled by default
Existing local-only usage remains unchanged
Settings migration is handled automatically for existing users upgrading from previous versions

Screenshots/Recordings/Graphs

Tests

Unit Tests:

Added tests/slic3rutils/test_webdav_sync.cpp for WebDAV synchronization verification
Tests cover connection handling, upload/download operations, and error scenarios

Integration Testing (Recommended for Manual Verification):

Git repository workflow:
- Automatic repository creation when sync is enabled
- Profile upload/download cycles between devices
- Branch creation and remote tracking
- Authentication token handling (when configured)
Conflict resolution scenarios:
- Simultaneous edits to same profile on different devices
- Field-level merge dialog appearance and functionality
- Manual conflict resolution preserving user intent
WebDAV backend:
- Connection establishment and credential handling
- File upload/download with various profile sizes
- Error handling for network issues and auth failures
UI integration:
- Preferences panel accessibility and setting persistence
- Sync status indicators in main window
- Notification system for sync events and conflicts

Note: As this is a draft PR, comprehensive automated test coverage is still in progress. Community testing of the sync functionality is encouraged before final release.

*Originally created by @loss-and-quick on 3/24/2026* # Description This PR implements self-hosted synchronization and backup capabilities for OrcaSlicer profiles and projects, addressing the lack of centralized configuration management. **Key Features Added:** - Self-hosted Git synchronization using libgit2 for version-controlled profile storage - WebDAV synchronization as an alternative storage backend - Automatic conflict detection with manual resolution dialogs - Configurable sync settings including optional Git token authentication - UI integration in Preferences menu for enabling/disabling sync features - Field-level merge optimization to reduce unnecessary conflicts **What Issue This Addresses:** OrcaSlicer previously lacked a built-in mechanism for synchronizing user profiles, printer settings, and project configurations across multiple devices. Users had to manually copy configuration files or rely on third-party sync solutions, risking data loss and inconsistency. **New Dependencies:** - Added libgit2 as a vendored dependency (in deps/LIBGIT2/) - Updated CMake configurations to detect and link against libgit2 - No breaking changes to existing functionality; feature is opt-in **Breaking Changes & Considerations:** - None - the feature is completely optional and disabled by default - Existing local-only usage remains unchanged - Settings migration is handled automatically for existing users upgrading from previous versions # Screenshots/Recordings/Graphs <img width="531" height="357" alt="image" src="https://github.com/user-attachments/assets/5a408f1b-d96e-4075-b8af-145c37507591" /> <img width="484" height="52" alt="image" src="https://github.com/user-attachments/assets/870d8f57-2b85-41f5-9596-c2416d267278" /> <img width="1077" height="648" alt="image" src="https://github.com/user-attachments/assets/e3db05c1-946a-45e5-83c3-065c031fe739" /> ## Tests  **Unit Tests:** - Added `tests/slic3rutils/test_webdav_sync.cpp` for WebDAV synchronization verification - Tests cover connection handling, upload/download operations, and error scenarios **Integration Testing (Recommended for Manual Verification):** 1. Git repository workflow: - Automatic repository creation when sync is enabled - Profile upload/download cycles between devices - Branch creation and remote tracking - Authentication token handling (when configured) 2. Conflict resolution scenarios: - Simultaneous edits to same profile on different devices - Field-level merge dialog appearance and functionality - Manual conflict resolution preserving user intent 3. WebDAV backend: - Connection establishment and credential handling - File upload/download with various profile sizes - Error handling for network issues and auth failures 4. UI integration: - Preferences panel accessibility and setting persistence - Sync status indicators in main window - Notification system for sync events and conflicts **Note:** As this is a draft PR, comprehensive automated test coverage is still in progress. Community testing of the sync functionality is encouraged before final release.

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Reference: github/OrcaSlicer#177