# Shot Data Table Implementation with TanStack Table

## Overview
Successfully refactored the shot table view to use shadcn-vue Data Table pattern with TanStack Table (@tanstack/vue-table). This provides a more robust, performant, and feature-rich table implementation following industry best practices.

## What Changed

### New Dependencies
- **@tanstack/vue-table**: Headless table library for Vue 3 with powerful sorting, filtering, and column management

### New Files Created

1. **frontend/src/components/shot/columns.ts**
   - Column definitions using TanStack Table's ColumnDef type
   - Dynamic column generation for task types
   - Integrated action menus and badges
   - Type-safe column configuration

2. **frontend/src/components/shot/ShotsDataTable.vue**
   - Data table component using TanStack Table
   - Handles sorting state
   - Manages column visibility
   - Emits row click events
   - Fully typed with TypeScript

### Updated Files

1. **frontend/src/components/shot/ShotBrowser.vue**
   - Replaced custom table with TanStack Table implementation
   - Updated state management to use SortingState and VisibilityState
   - Simplified sorting logic (handled by TanStack Table)
   - Added shotColumns computed property
   - Integrated with new data table component

2. **frontend/src/components/shot/ShotColumnVisibilityControl.vue**
   - Updated to work with TanStack Table's VisibilityState
   - Added isColumnVisible helper function
   - Maintains same UI/UX as asset page

## Key Features

### TanStack Table Benefits

1. **Type Safety**: Full TypeScript support with proper typing
2. **Performance**: Optimized rendering and state management
3. **Flexibility**: Headless UI allows custom styling
4. **Sorting**: Built-in sorting with multi-column support
5. **Column Management**: Easy show/hide columns
6. **Row Selection**: Built-in row selection state
7. **Extensibility**: Easy to add pagination, filtering, etc.

### Column Definitions

The `columns.ts` file defines all columns:
- **Select**: Checkbox column for row selection
- **Shot Name**: With camera icon
- **Episode**: Badge showing episode name
- **Frame Range**: Shows start-end with frame count
- **Status**: Color-coded status badge
- **Task Status Columns**: Dynamically generated from allTaskTypes
- **Description**: Truncated text
- **Actions**: Dropdown menu with edit/delete/view tasks

### State Management

Uses TanStack Table state types:
- **SortingState**: Array of sort configurations
- **VisibilityState**: Object mapping column IDs to visibility boolean
- Session storage persistence for column visibility

### Integration Pattern

```typescript
// Column definitions with metadata
const shotColumns = computed(() => {
  const meta: ShotColumnMeta = {
    episodes: episodes.value,
    onEdit: editShot,
    onDelete: deleteShot,
    onViewTasks: selectShot,
  }
  return createShotColumns(allTaskTypes.value, meta)
})

// Data table usage
<ShotsDataTable
  :columns="shotColumns"
  :data="filteredShots"
  :sorting="sorting"
  :column-visibility="columnVisibility"
  :all-task-types="allTaskTypes"
  @update:sorting="sorting = $event"
  @update:column-visibility="handleColumnVisibilityChange"
  @row-click="handleRowClick"
/>
```

## Advantages Over Previous Implementation

### Before (Custom Table)
- Manual sorting implementation
- Custom column visibility logic
- More code to maintain
- Less type safety
- Manual state management

### After (TanStack Table)
- Built-in sorting with proper state management
- Standard column visibility pattern
- Less custom code
- Full TypeScript support
- Industry-standard patterns
- Better performance
- Easier to extend (pagination, filtering, etc.)

## Consistency with Asset Page

The shot table now follows the same patterns as the asset table:
- Same column visibility control UI
- Same sorting behavior
- Same row selection patterns
- Consistent badge styling
- Matching action menus

## Future Enhancements

With TanStack Table, these features are now easy to add:

1. **Pagination**: Built-in pagination support
2. **Global Filtering**: Search across all columns
3. **Column Resizing**: Drag to resize columns
4. **Column Reordering**: Drag and drop columns
5. **Row Expansion**: Expandable rows for details
6. **Virtual Scrolling**: For thousands of rows
7. **Export**: Easy data export functionality

## Testing

The implementation maintains all existing functionality:
- ✅ Column sorting works
- ✅ Column visibility control works
- ✅ Row selection works
- ✅ Task status badges display correctly
- ✅ Action menus work
- ✅ Episode names display correctly
- ✅ Session storage persistence works
- ✅ Integration with ShotBrowser works

## Migration Notes

No breaking changes for users:
- Same UI/UX
- Same features
- Better performance
- More maintainable code

The refactoring is complete and production-ready!