This commit introduces significant improvements to the file loading pipeline to enhance stability and user experience.
The application startup is no longer blocked by file caching, and it now gracefully handles corrupted or slow-loading video files instead of hanging.
Key Changes:
- **Non-Blocking File Caching:**
- Caching files to IndexedDB is now a non-blocking, "fire-and-forget" operation.
- `saveFileWithMetadata` calls are no longer awaited, allowing the UI and parsing to proceed immediately.
- `Promise.allSettled` is used to log cache results in the background.
- **Robust Video Loading:**
- Implemented a 10-second timeout for the video `canplaythrough` event to prevent indefinite hangs.
- If the timeout occurs but `loadedmetadata` has fired, the video is treated as playable, allowing the application to continue.
- If the video fails to load entirely (due to a timeout or an `error` event), the user is presented with a modal to either "Retry" or "Continue without Video".
- **Bug Fixes:**
- Fixed a critical state bug where `appState.videoMissing` was not reset on a new file load, which caused issues when re-uploading a valid video after a failure.
- Resolved multiple race conditions in the modal system where error and choice modals would close prematurely after being displayed.
- Replaced the blocking `alert()` on storage quota errors with a non-blocking modal, ensuring the app remains responsive.
The previous synchronization logic relied on either naive relative time (causing drift) or expensive runtime date parsing (causing lag). This commit implements a hybrid "Baked Offset" architecture.
Changes:
- src/utils.js: Added `precomputeRadarVideoSync` to inject `videoSyncedTime` into every radar frame. Ported robust timestamp parsers from the modularize branch.
- src/main.js: Integrated automatic offset calculation into the file loading pipeline. If filenames contain timestamps, the offset is now auto-calculated.
- src/sync.js: Simplified the `videoFrameCallback` loop. It now treats the video as the "Master Clock" and looks up the pre-computed synced time, ensuring 60fps performance during playback and scrubbing.
- UI: Manual offset adjustments now trigger a "re-bake" of the entire timeline instantly.
RUSHIL AMBARISH KADU