# Activities Admin Page - Fixes Summary

## Issues Fixed

### 1. ✅ AI Parsing Not Working
**Problem**: AI-generated JSON was appearing as raw text in form fields instead of being parsed.

**Solution**:
- Added defensive JSON parsing to handle cases where API returns JSON as a string
- Improved error handling with detailed error messages
- Added console logging for debugging
- Enhanced toast notifications with proper durations

**Files Modified**:
- `frontend/src/pages/admin/AdminActivitiesPage.tsx` (lines 195-217)

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### 2. ✅ Map Integration Fixed
**Problem**: 
- Map coordinates were not being saved to the event
- Map preview was not showing after import
- "Poloha nebyla nalezena" error when location wasn't geocoded

**Solution**:
- Added `latitude` and `longitude` fields to Event model (backend)
- Updated EventInput to accept coordinates
- Modified CreateEvent and UpdateEvent controllers to save coordinates
- Added map preview after importing coordinates
- Coordinates are now saved when using MapLinkImporter
- EventLocationMap component now accepts and uses stored coordinates (falls back to geocoding if not provided)

**Files Modified**:
- `internal/models/event.go` - Added YoutubeURL, Latitude, Longitude fields
- `internal/controllers/event_controller.go` - Added fields to EventInput, CreateEvent, UpdateEvent
- `frontend/src/types/event.ts` - Added latitude, longitude fields
- `frontend/src/pages/admin/AdminActivitiesPage.tsx` - Save coordinates on import, show map preview
- `frontend/src/components/events/EventLocationMap.tsx` - Accept and use provided coordinates
- `frontend/src/pages/ActivityDetailPage.tsx` - Pass coordinates to map component

---

### 3. ✅ YouTube Video Embed Fixed
**Problem**: YouTube videos were not displaying correctly due to complex/broken URL parsing.

**Solution**:
- Created robust `getYouTubeEmbedUrl()` helper function that handles:
  - Standard watch URLs: `https://www.youtube.com/watch?v=VIDEO_ID`
  - Short URLs: `https://youtu.be/VIDEO_ID`
  - Embed URLs: `https://www.youtube.com/embed/VIDEO_ID`
  - Already embedded URLs (returns as-is)
- Properly extracts video ID using regex matching
- Returns null for invalid URLs

**Files Modified**:
- `frontend/src/pages/ActivityDetailPage.tsx` - Added getYouTubeEmbedUrl helper (lines 37-72)

---

### 4. ✅ File Attachments - Supported Formats
**Problem**: No file type restrictions or information about supported formats.

**Solution**:
- Added visible list of supported file formats above upload button
- Implemented file type validation with user-friendly error messages
- Added accept attribute to file input for browser-level filtering
- Shows individual error messages for each failed upload

**Supported Formats**:
- Documents: PDF, Word (.doc, .docx), Excel (.xls, .xlsx), PowerPoint (.ppt, .pptx)
- Images: JPG, JPEG, PNG, GIF, WEBP
- Text: TXT
- Archives: ZIP, RAR

**Files Modified**:
- `frontend/src/pages/admin/AdminActivitiesPage.tsx` - Added file type validation (lines 864-910)

---

## Database Schema Changes

The following fields were added to the `events` table (via AutoMigrate):
- `youtube_url` VARCHAR(500) - Stores YouTube video URL
- `latitude` FLOAT - Stores location latitude (nullable)
- `longitude` FLOAT - Stores location longitude (nullable)

**Note**: AutoMigrate is called on every CreateEvent/UpdateEvent operation, so the schema will update automatically when the server restarts.

---

## Testing Checklist

### AI Generation
- [ ] Test AI generation with various prompts
- [ ] Verify title and description fields are populated correctly
- [ ] Test with "Přepsat existující obsah" checkbox on/off
- [ ] Verify different tone settings work

### Map Integration
- [ ] Import coordinates from Google Maps link
- [ ] Import coordinates from Mapy.cz link
- [ ] Verify map preview shows after import
- [ ] Create event and verify coordinates are saved
- [ ] Edit existing event - verify map loads with saved coordinates
- [ ] View event detail page - verify map shows correctly

### YouTube Videos
- [ ] Add YouTube video using standard watch URL
- [ ] Add YouTube video using short youtu.be URL
- [ ] Add YouTube video from club channel selector
- [ ] View event detail page - verify video embeds correctly
- [ ] Test with various YouTube URL formats

### File Attachments
- [ ] Upload supported file types (PDF, Word, Excel, etc.)
- [ ] Try uploading unsupported file type - verify error message
- [ ] Upload multiple files at once
- [ ] Verify file list shows with correct sizes
- [ ] Remove attachment - verify it's removed from list

### Form Validation
- [ ] Try submitting without required fields - verify error messages
- [ ] Verify "Název" and "Začátek" show required field errors

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## Next Steps

1. **Backend**: Restart the Go server to apply database schema changes
2. **Frontend**: Rebuild the React app if needed
3. **Testing**: Run through the testing checklist above
4. **Monitoring**: Check server logs for any migration warnings or errors

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## Additional Improvements Made

- Enhanced coordinate state management in admin modal (initialize/clear on open/close)
- Improved error messages throughout the form
- Better loading states and user feedback
- Consistent toast notification durations
- Better TypeScript typing for coordinates (number | null)