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

$errors = [];
if (!function_exists('curl_init')) {
    $errors[] = 'cURL extension is not installed or enabled.';
}

// To get more diversity, let's use a few different queries.
$queries = ['man full body portrait', 'woman full body portrait', 'person full body standing'];
$results = [];

foreach ($queries as $q) {
    // Add random page to get different results each time
    $url = 'https://api.pexels.com/v1/search?query=' . urlencode($q) . '&orientation=portrait&per_page=1&page=' . rand(1, 20);
    $data = pexels_get($url);

    if ($data && !empty($data['photos'])) {
        $photo = $data['photos'][0];
        $src = $photo['src']['large'] ?? $photo['src']['original'];
        $targetDir = __DIR__ . '/../assets/images/pexels/';
        
        $filename = $photo['id'] . '.jpg';
        $target = $targetDir . $filename;

        // Only download if it doesn't exist to save bandwidth
        if (!file_exists($target)) {
            $download_result = download_to($src, $target);
            if ($download_result === false) {
                $errors[] = "Failed to download image to " . $target;
            }
        }

        if (file_exists($target)) {
            $results[] = [
                'id' => $photo['id'],
                'local_path' => 'assets/images/pexels/' . $filename,
                'photographer' => $photo['photographer'] ?? 'Unknown',
                'photographer_url' => $photo['photographer_url'] ?? '#',
                'avg_color' => $photo['avg_color']
            ];
        } else {
            $errors[] = "Image file does not exist at " . $target;
        }
    } else {
        $errors[] = "Failed to fetch data from Pexels for query: " . $q;
    }
}

// Ensure we have 3 models, even if Pexels fails, use placeholders
while (count($results) < 3) {
    $placeholder_index = count($results) + 1;
    $results[] = [
        'id' => 'placeholder_' . $placeholder_index,
        // Using an external placeholder service as a fallback
        'local_path' => 'https://via.placeholder.com/400x600.png?text=Model+' . $placeholder_index,
        'photographer' => 'Placeholder',
        'photographer_url' => '#',
        'avg_color' => '#cccccc'
    ];
}

$response = [
    'models' => array_slice($results, 0, 3)
];

if (!empty($errors)) {
    $response['errors'] = $errors;
}

echo json_encode($response);