# Edit & Delete Flush Feature

## Overview
This feature allows users to edit and delete their own flush records directly from their profile page. The implementation includes a modal interface for editing, client-side validation, and proper handling through the AT Protocol and Jetstream firehose.

## What Was Added

### 1. API Client Functions (`src/lib/api-client.ts`)
Added two new functions to handle record management:

- **`deleteFlushRecord(session, recordUri)`**: Deletes a flush record using the AT Protocol's `deleteRecord` method
- **`updateFlushRecord(session, recordUri, text, emoji, originalCreatedAt)`**: Updates a flush record using the AT Protocol's `putRecord` method

Both functions:
- Parse AT URIs correctly (format: `at://did:plc:xxx/collection.name/rkey`)
- Use the OAuth session's Agent for authenticated requests
- Include proper error handling and logging
- Preserve the original `createdAt` timestamp on updates

### 2. Edit Modal Component (`src/components/EditFlushModal.tsx`)
A beautiful modal dialog that provides:

- Pre-populated form with the flush's current text and emoji
- Character counter (59 character limit)
- Emoji selector with all approved emojis
- Content validation (banned words, character limits)
- Delete confirmation workflow
- Loading states for all async operations
- Error handling with user-friendly messages
- Backdrop click to close
- Responsive design for mobile devices

### 3. Profile Page Updates (`src/app/profile/[handle]/page.tsx`)
Enhanced the profile page with:

- Edit button on each flush (only visible to the flush owner)
- Authentication check using `useAuth()` hook to compare DIDs
- Integration with `EditFlushModal` component
- State management for editing operations
- Success/error message display
- Optimistic UI updates (updates local state immediately)

New state variables:
- `editingFlush`: Tracks which flush is being edited
- `actionError`: Displays error messages
- `actionSuccess`: Displays success messages

New functions:
- `isOwnProfile()`: Checks if the logged-in user owns the profile
- `handleUpdateFlush()`: Handles the update operation
- `handleDeleteFlush()`: Handles the delete operation

### 4. Profile Styles (`src/app/profile/[handle]/profile.module.css`)
Added styles for:

- `.contentRight`: Container for timestamp and edit button
- `.editButton`: Pencil icon button with hover effects
- `.actionError`: Error message styling
- `.actionSuccess`: Success message styling

### 5. Edit Modal Styles (`src/components/EditFlushModal.module.css`)
Complete styling for the modal including:

- Dark backdrop overlay
- Centered modal with max-width
- Form inputs and emoji grid
- Action buttons (Save, Cancel, Delete)
- Delete confirmation UI
- Responsive mobile layout
- Smooth transitions and hover effects

### 6. Jetstream Consumer (`scripts/firehose-worker.js`)
Updated to properly handle:

- **Delete operations**: Removes records from Supabase when deleted from the network
- **Update operations**: Updates existing records with new content
- URI construction for record matching
- Proper error handling for database operations

## How It Works

### User Flow

1. **User navigates to their own profile**
   - Edit buttons appear next to each of their flushes
   - Buttons are hidden for other users' profiles

2. **User clicks edit button**
   - Modal opens with pre-filled form
   - Current text and emoji are displayed
   - User can modify text and/or emoji
   - Character counter shows remaining characters

3. **User saves changes**
   - Validation runs (banned words, character limits)
   - API call made to update the record via AT Protocol
   - Local state updates immediately (optimistic UI)
   - Success message displayed
   - Modal closes automatically

4. **User deletes a flush**
   - Clicks "Delete Flush" button
   - Confirmation prompt appears
   - On confirmation, record is deleted via AT Protocol
   - Record removed from local state
   - Success message displayed
   - Modal closes

### Technical Flow

#### Update Operation
```
User clicks Save
  → Validation (client-side)
  → updateFlushRecord(session, uri, text, emoji, createdAt)
  → Agent.api.com.atproto.repo.putRecord()
  → PDS updates the record
  → Jetstream firehose emits 'update' event
  → Worker processes event
  → Supabase record updated
  → UI updates optimistically
```

#### Delete Operation
```
User confirms delete
  → deleteFlushRecord(session, uri)
  → Agent.api.com.atproto.repo.deleteRecord()
  → PDS deletes the record
  → Jetstream firehose emits 'delete' event
  → Worker processes event
  → Supabase record deleted
  → UI updates optimistically
```

## Authorization

- Uses OAuth session from `@atproto/oauth-client-browser`
- Compares `session.sub` (user's DID) with `profileData.did`
- Edit buttons only visible when DIDs match
- AT Protocol handles authorization at the PDS level
- Users can only edit/delete their own records

## Validation

All validation from the original flush creation is preserved:

- **Character limit**: 59 characters
- **Banned words**: Content filtering via `containsBannedWords()`
- **Text sanitization**: via `sanitizeText()`
- **Emoji validation**: Only approved emojis from the list
- **Authentication**: Must be logged in

## Error Handling

Comprehensive error handling at every level:

- Network failures
- Authorization errors
- Validation errors
- User-friendly error messages
- Console logging for debugging
- Graceful degradation

## Responsive Design

The modal and edit buttons work beautifully on:

- Desktop screens
- Tablets
- Mobile devices

Features:
- Touch-friendly button sizes
- Readable text at all sizes
- Scrollable modal content
- Proper spacing and padding

## Future Enhancements

Potential improvements:

1. **Edit history**: Track when records were edited
2. **Undo functionality**: Allow users to revert changes
3. **Bulk operations**: Edit/delete multiple flushes at once
4. **Keyboard shortcuts**: Quick access to edit/delete
5. **Inline editing**: Edit directly in the feed without modal
6. **Draft saving**: Save edits as drafts before publishing

## Testing Checklist

To verify the feature works correctly:

- [ ] Edit button appears on own profile only
- [ ] Edit button hidden on other users' profiles
- [ ] Modal opens when edit button clicked
- [ ] Form pre-populates with current values
- [ ] Text changes are validated
- [ ] Emoji selection works
- [ ] Character counter updates correctly
- [ ] Save button updates the record
- [ ] Delete button shows confirmation
- [ ] Delete confirmation works
- [ ] Cancel buttons close modal
- [ ] Success messages display
- [ ] Error messages display
- [ ] Local state updates optimistically
- [ ] Jetstream updates Supabase correctly
- [ ] Mobile layout works properly

## Notes

- Records maintain their original `createdAt` timestamp when updated
- Updates create a new CID (Content Identifier) for the record
- The URI remains the same (same `rkey`)
- Deletes are permanent and cannot be undone
- All operations respect AT Protocol's distributed architecture

