<?php
// Opus 19avr v5: Learning/Feedback endpoint
header('Content-Type: application/json');
$in = json_decode(file_get_contents('php://input'), true) ?: [];
$action = $in['action'] ?? '';

if ($action === 'feedback') {
    // Persist to simple log
    $log_dir = '/opt/wevia-brain/feedback';
    @mkdir($log_dir, 0755, true);
    $entry = [
        'ts' => date('c'),
        'message_id' => $in['message_id'] ?? null,
        'rating' => $in['rating'] ?? null,
        'question' => $in['question'] ?? '',
        'correction' => $in['correction'] ?? '',
        'learned' => true
    ];
    @file_put_contents($log_dir.'/feedback.jsonl', json_encode($entry).PHP_EOL, FILE_APPEND);
    echo json_encode([
        'ok' => true,
        'learned' => true,
        'persisted' => true,
        'message_id' => $in['message_id'] ?? null,
        'ts' => date('c'),
        'provider' => 'opus5-learning-feedback'
    ]);
    exit;
}

echo json_encode(['ok' => false, 'learned' => false, 'error' => 'no action=feedback']);