# Video Section Enhancements

## Summary
Enhanced the video section with YouTube links, Full HD auto-start quality, and added indication that all videos are from YouTube.

## Changes Made

### 1. VideosPage.tsx (`frontend/src/pages/VideosPage.tsx`)

#### Added YouTube Icon Import
```tsx
import { FaPlay, FaExternalLinkAlt, FaYoutube } from 'react-icons/fa';
```

#### Enhanced Page Header
- Added "Všechna videa jsou z YouTube" (All videos are from YouTube) text with YouTube icon
- Positioned below the main description

#### Video Cards Enhancement
- **Added YouTube Link Button**: Each video card now shows a small "YouTube" button
- The button opens the video directly on YouTube in a new tab
- Uses `FaYoutube` icon with red color scheme
- Button prevents event propagation to avoid triggering the modal

#### Modal Video Player Enhancement
- **Full HD Quality**: Added `vq=hd1080` parameter to force 1080p quality
- **Auto-play**: Videos automatically start when modal opens
- **Open on YouTube Button**: Added button in modal to open the video on YouTube
- URL format: `?autoplay=1&vq=hd1080&rel=0&modestbranding=1&playsinline=1`

### 2. VideosSection.tsx (`frontend/src/components/home/VideosSection.tsx`)

#### Added Imports
```tsx
import { Icon, VStack } from '@chakra-ui/react';
import { FaYoutube } from 'react-icons/fa';
```

#### Enhanced Video Cards
- Added `videoId` to `RenderItem` type
- Created `extractVideoId` helper function
- Updated all video items to include `videoId` field
- Added YouTube link buttons to each card
- Reorganized card layout using `VStack` for better structure

#### Modal Enhancement
- Updated iframe URL to include `vq=hd1080` for Full HD quality
- Maintained auto-play and other quality parameters

## Technical Details

### YouTube URL Parameters
- `autoplay=1` - Automatically starts video playback
- `vq=hd1080` - Requests Full HD (1080p) quality as default
- `rel=0` - Limits related videos to same channel
- `modestbranding=1` - Minimal YouTube branding
- `playsinline=1` - Plays inline on mobile devices

### Video ID Extraction
Videos now properly extract and store YouTube video IDs for:
- Generating thumbnail URLs
- Creating direct YouTube links
- Better tracking and analytics

### User Experience Improvements
1. **Clear Attribution**: Users know all videos are from YouTube
2. **Direct Access**: Can open videos directly on YouTube with one click
3. **High Quality**: Videos start in Full HD when available
4. **Seamless Playback**: Auto-play in modal for better experience

## Testing Checklist
- [ ] Video cards display correctly on VideosPage
- [ ] Video cards display correctly in HomePage VideosSection
- [ ] YouTube link buttons work and open in new tab
- [ ] Modal opens and videos auto-play
- [ ] Videos start in Full HD quality (when available)
- [ ] "Všechna videa jsou z YouTube" text appears on VideosPage
- [ ] YouTube icons display correctly
- [ ] Mobile responsiveness maintained

## Files Modified
1. `frontend/src/pages/VideosPage.tsx`
2. `frontend/src/components/home/VideosSection.tsx`

## Notes
- The `vq=hd1080` parameter requests 1080p, but YouTube will use the highest available quality up to that resolution
- If a video doesn't have 1080p available, YouTube will automatically select the best available quality
- All existing functionality (auto-fetch, manual configuration, legacy support) remains intact
