<?php
// api/pexels.php
header('Content-Type: application/json');
require_once __DIR__.'/../includes/pexels.php';

// Get comma-separated query names from the request
$queries_str = $_GET['queries'] ?? '';
if (empty($queries_str)) {
    echo json_encode(['error' => 'No queries provided.']);
    exit;
}
$queries = explode(',', $queries_str);

$results = [];

foreach ($queries as $query) {
    $query = trim($query);
    if (empty($query)) continue;

    // Define a local path for the image
    $local_path_dir = __DIR__ . '/../assets/images/corals';
    if (!is_dir($local_path_dir)) {
        mkdir($local_path_dir, 0775, true);
    }
    $image_filename = strtolower(str_replace(' ', '-', $query)) . '.jpg';
    $local_path = $local_path_dir . '/' . $image_filename;
    $relative_path = 'assets/images/corals/' . $image_filename;

    // Serve cached image if it exists
    if (file_exists($local_path)) {
        $results[$query] = $relative_path . '?v=' . filemtime($local_path);
        continue;
    }

    // Fetch from Pexels if not cached
    $search_query = $query . " coral";
    $url = 'https://api.pexels.com/v1/search?query=' . urlencode($search_query) . '&orientation=square&per_page=1&page=1';
    $data = pexels_get($url);

    if ($data && !empty($data['photos'])) {
        $photo = $data['photos'][0];
        $src = $photo['src']['large'] ?? $photo['src']['medium'] ?? $photo['src']['original'];
        
        if (download_to($src, $local_path)) {
            $results[$query] = $relative_path . '?v=' . time();
        } else {
            // Download failed, use a placeholder
            $results[$query] = 'https://picsum.photos/seed/' . urlencode($query) . '/600/600';
        }
    } else {
        // Pexels fetch failed, use a placeholder
        $results[$query] = 'https://picsum.photos/seed/' . urlencode($query) . '/600/600';
    }
    // Small delay to avoid hitting API rate limits too quickly
    usleep(200000); // 200ms
}

echo json_encode($results);