<?php
  require __DIR__ . "/../../vendor/autoload.php";
  require __DIR__ . "/../../server/utils/init.php";

  use GuzzleHttp\Client;

  $requestUri = $_SERVER["REQUEST_URI"];
  $url = trim(parse_url($requestUri, PHP_URL_PATH), "/");
  $postgrestUrl = $_ENV["POSTGREST_URL"] ?? getenv("POSTGREST_URL");
  $postgrestApiKey = $_ENV["POSTGREST_API_KEY"] ?? getenv("POSTGREST_API_KEY");

  if (strpos($url, "music/artists/") !== 0) {
    echo file_get_contents(__DIR__ . "/../../404/index.html");
    exit();
  }

  $cacheKey = "artist_" . md5($url);
  $artist = null;
  $useRedis = false;

  try {
    if (extension_loaded('redis')) {
      $redis = new Redis();
      $redis->connect('127.0.0.1', 6379);
      $useRedis = true;
    }
  } catch (Exception $e) {
    error_log("Redis not available: " . $e->getMessage());
  }

  if ($useRedis && $redis->exists($cacheKey)) {
    $artist = json_decode($redis->get($cacheKey), true);
  } else {
    $apiUrl = "$postgrestUrl/optimized_artists?url=eq./" . $url;
    $client = new Client();

    try {
      $response = $client->request("GET", $apiUrl, [
        "headers" => [
          "Accept" => "application/json",
          "Authorization" => "Bearer {$postgrestApiKey}",
        ],
      ]);

      $artistData = json_decode($response->getBody(), true);

      if (!$artistData) {
        echo file_get_contents(__DIR__ . "/../../404/index.html");
        exit();
      }

      $artist = $artistData[0];

      if ($useRedis) {
        $redis->setex($cacheKey, 3600, json_encode($artist));
      }
    } catch (Exception $e) {
      error_log($e->getMessage());
      echo file_get_contents(__DIR__ . "/../../404/index.html");
      exit();
    }
  }

  $artist["description"] = parseMarkdown($artist["description"]);
  $pageTitle = htmlspecialchars(
    "Artists • " . $artist["name"],
    ENT_QUOTES,
    "UTF-8"
  );
  $pageDescription = truncateText(htmlspecialchars(
    strip_tags($artist["description"]),
    ENT_QUOTES,
    "UTF-8"
  ), 250);
  $ogImage = htmlspecialchars($artist["image"] . "?class=w800", ENT_QUOTES, "UTF-8");
  $fullUrl = "https://www.coryd.dev" . $requestUri;

  header("Cache-Control: public, max-age=3600");
  header("Expires: " . gmdate("D, d M Y H:i:s", time() + 3600) . " GMT");
?>