<?php
namespace Site\Controller;

class BlogPost {
  /**
   * ブログ投稿を取得する
   * 
   * @return array 投稿の配列
   */
  public function getPosts(string $section): array {
    $path = ROOT.$section;
    $posts = [];

    if (!is_dir($path)) return $posts;
    $files = glob($path.'/*.md');

    foreach ($files as $file) {
      $content = file_get_contents($file);
      $parts = explode('----', $content, 2);
      if (count($parts) != 2) continue;

      $metadata = [];
      $meta = explode("\n", trim($parts[0]));

      foreach ($meta as $line) {
        $line = trim($line);
        if (empty($line)) continue;

        $colonPos = strpos($line, ':');
        if ($colonPos === false) continue;

        $key = trim(substr($line, 0, $colonPos));
        $value = trim(substr($line, $colonPos + 1));
        $value = trim($value, '"\'');

        if ($key == 'category') {
          $metadata[$key] = array_map('trim', explode(',', $value));
        } else {
          $metadata[$key] = $value;
        }
      }

      $articleBody = trim($parts[1]);
      $preview = mb_substr(strip_tags($articleBody), 0, 50).'...';
      $slug = basename($file, '.md');

      $posts[] = [
        'title' => $metadata['title'] ?? '',
        'date' => $metadata['date'] ?? '',
        'thumbnail' => $metadata['thumbnail'] ?? '',
        'thumborient' => $metadata['thumborient'] ?? '',
        'category' => $metadata['category'] ?? [],
        'uuid' => $metadata['uuid'] ?? '',
        'preview' => $preview,
        'slug' => $slug,
      ];
    }

    // 日付でソート（新しい順）
    usort($posts, function($a, $b) {
      return strtotime($b['date']) - strtotime($a['date']);
    });

    return $posts;
  }
}
