<?php
/**
 * Pulls the average star rating and review count from The Old Fitz's
 * Google Business Profile via the Places API (New), cached to a local
 * JSON file so we don't hit Google on every page load. Falls back to
 * the numbers in config.php whenever there's no API key/Place ID yet,
 * or the API call fails for any reason — the homepage never breaks
 * because of this.
 */

function fritz_google_reviews(): array {
    $fallback = [
        'rating'       => GOOGLE_FALLBACK_RATING,
        'review_count' => GOOGLE_FALLBACK_REVIEW_COUNT,
        'source'       => 'fallback',
        'fetched_at'   => null,
    ];

    if (GOOGLE_PLACES_API_KEY === '' || GOOGLE_PLACE_ID === '') {
        return $fallback;
    }

    $cacheFile = __DIR__ . '/../cache/google-reviews.json';

    if (is_file($cacheFile)) {
        $cached = json_decode((string) file_get_contents($cacheFile), true);
        if (is_array($cached) && (time() - ($cached['fetched_at'] ?? 0)) < GOOGLE_STATS_CACHE_TTL) {
            $cached['source'] = 'cache';
            return $cached;
        }
    }

    $fresh = fritz_fetch_google_reviews($fallback);
    $fresh['fetched_at'] = time();

    $cacheDir = dirname($cacheFile);
    if (!is_dir($cacheDir)) {
        @mkdir($cacheDir, 0775, true);
    }
    @file_put_contents($cacheFile, json_encode($fresh));

    return $fresh;
}

function fritz_fetch_google_reviews(array $fallback): array {
    if (!function_exists('curl_init')) {
        return $fallback;
    }

    $url = sprintf(
        'https://places.googleapis.com/v1/places/%s',
        rawurlencode(GOOGLE_PLACE_ID)
    );

    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT        => 5,
        CURLOPT_HTTPHEADER     => [
            'X-Goog-Api-Key: ' . GOOGLE_PLACES_API_KEY,
            // Field mask is required by the New Places API (400 without
            // it) and also determines the billing SKU — rating and
            // userRatingCount are "Place Details (New) - Atmosphere".
            'X-Goog-FieldMask: rating,userRatingCount',
        ],
    ]);
    $body = curl_exec($ch);
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if ($body === false || $httpCode !== 200) {
        return $fallback;
    }

    $data = json_decode($body, true);
    if (!is_array($data) || isset($data['error'])) {
        return $fallback;
    }

    return [
        'rating'       => $data['rating'] ?? $fallback['rating'],
        'review_count' => $data['userRatingCount'] ?? $fallback['review_count'],
        'source'       => 'live',
    ];
}