<?php

function pexels_key() {
  $k = getenv('PEXELS_KEY');
  return $k && strlen($k) > 0 ? $k : 'Vc99rnmOhHhJAbgGQoKLZtsaIVfkeownoQNbTj78VemUjKh08ZYRbf18';
}

function pexels_get($url) {
  $ch = curl_init();
  curl_setopt_array($ch, [
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [ 'Authorization: '. pexels_key() ],
    CURLOPT_TIMEOUT => 20,
    CURLOPT_USERAGENT => 'Flatlogic/Gemini-CLI'
  ]);
  $resp = curl_exec($ch);
  $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  curl_close($ch);
  if ($code >= 200 && $code < 300 && $resp) return json_decode($resp, true);
  return null;
}

function download_to($srcUrl, $destPath) {
    if (!is_dir(dirname($destPath))) {
        mkdir(dirname($destPath), 0775, true);
    }

    $ch = curl_init($srcUrl);
    $fp = fopen($destPath, 'wb');
    curl_setopt($ch, CURLOPT_FILE, $fp);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 60);
    $result = curl_exec($ch);
    curl_close($ch);
    fclose($fp);

    return $result !== false;
}