# Blind Mode System Check

## ✅ Status: All Systems Operational

### Database
- [x] `blind_mode` column added to `team_sessions` table
- [x] Type: TINYINT(1) 
- [x] Default: 0 (collaborative mode)
- [x] Comment: '0 = collaborative, 1 = blind'

### API Endpoints
- [x] `team_session_toggle_blind.php` - Toggle blind mode (Fixed auth)
- [x] `team_session_delete.php` - Delete sessions (Fixed auth)
- [x] `team_votes_get.php` - Get votes with filtering (Modified)
- [x] `team_session_create.php` - Already correct
- [x] `team_session_finalize.php` - Already correct
- [x] `team_vote_submit.php` - Already correct (no auth needed)
- [x] `team_session_join.php` - Already correct (no auth needed)

### Frontend Pages
- [x] `team_session.php` - Toggle switch UI, delete button
- [x] `team_participant.php` - Blind mode banner, filtered votes
- [x] `team_monitor.php` - Visibility mode indicator

### CSS
- [x] Toggle switch styles added to `style.css`

## How It Works

### Active Sessions (status = 'active')
- Show blind mode toggle: 👁️ Collaborative ⇄ 🔒 Blind Mode
- Show Monitor Live button
- Show Finalize button
- Show Delete button (🗑️)

### Finalized Sessions (status = 'analyzing')
- Hide blind mode toggle (can't change after finalization)
- Show View Results button only
- Blind mode setting is preserved in database for reporting

## Common Issues & Solutions

### Issue: Toggle doesn't appear
**Solution:** Check session status - toggle only shows for "Active" sessions, not "Analyzing" or "Completed"

### Issue: 500 errors on toggle/delete
**Solution:** Fixed - was caused by duplicate auth includes. Now uses correct pattern:
```php
require_once __DIR__ . '/_bootstrap.php';
if (!is_researcher()) {
    json_error('Access denied. Researcher privileges required.', 403);
}
```

### Issue: Duplicate sessions
**Solution:** Use delete button (🗑️) to remove duplicates. Duplicates are database records, not display bugs.

## Testing Checklist

1. Create a new team session ✓
2. Verify toggle appears for active session ✓
3. Toggle to Blind Mode ✓
4. Have participants join ✓
5. Verify participants only see own votes in blind mode ✓
6. Verify monitor sees all votes ✓
7. Toggle back to Collaborative ✓
8. Verify participants see all votes ✓
9. Finalize session ✓
10. Verify toggle disappears ✓

## Auth Pattern (Standard for all researcher-only endpoints)

```php
<?php
require_once __DIR__ . '/_bootstrap.php';

if ($_SERVER['REQUEST_METHOD'] !== 'POST') { 
    json_error('POST required', 405); 
}

// Check researcher authentication (JSON-friendly)
if (!is_researcher()) {
    json_error('Access denied. Researcher privileges required.', 403);
}
```

**DO NOT:**
- Include auth.php separately (it's in _bootstrap.php)
- Use `is_logged_in() || !is_researcher()` pattern
- Mix authentication methods

## File Inventory

### Created
- `scripts/team_blind_mode_migration.sql`
- `public/api/team_session_toggle_blind.php`
- `public/api/team_session_delete.php`
- `BLIND_MODE_FEATURE.md`
- `SYSTEM_CHECK.md` (this file)

### Modified
- `public/api/team_votes_get.php`
- `public/team_session.php`
- `public/team_participant.php`
- `public/team_monitor.php`
- `assets/css/style.css`

---
**Last Updated:** October 12, 2025
**Status:** Production Ready