CREATE TABLE IF NOT EXISTS media_assets (
  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
  owner_user_id BIGINT UNSIGNED NOT NULL,
  media_type VARCHAR(20) NOT NULL,
  storage_provider VARCHAR(20) NOT NULL DEFAULT 'local',
  bucket VARCHAR(100) NOT NULL DEFAULT '',
  object_key VARCHAR(500) NOT NULL DEFAULT '',
  public_url VARCHAR(500) NOT NULL DEFAULT '',
  mime_type VARCHAR(100) NOT NULL DEFAULT '',
  file_size BIGINT UNSIGNED NOT NULL DEFAULT 0,
  width INT UNSIGNED NULL,
  height INT UNSIGNED NULL,
  duration_ms INT UNSIGNED NULL,
  moderation_status TINYINT UNSIGNED NOT NULL DEFAULT 1,
  status TINYINT UNSIGNED NOT NULL DEFAULT 1,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  deleted_at DATETIME(3) NULL,
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS posts (
  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
  user_id BIGINT UNSIGNED NOT NULL,
  content VARCHAR(2000) NOT NULL DEFAULT '',
  visibility TINYINT UNSIGNED NOT NULL DEFAULT 1,
  city_code VARCHAR(20) NOT NULL DEFAULT '',
  location_text VARCHAR(100) NOT NULL DEFAULT '',
  status TINYINT UNSIGNED NOT NULL DEFAULT 1,
  moderation_status TINYINT UNSIGNED NOT NULL DEFAULT 1,
  like_count INT UNSIGNED NOT NULL DEFAULT 0,
  comment_count INT UNSIGNED NOT NULL DEFAULT 0,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
  deleted_at DATETIME(3) NULL,
  PRIMARY KEY (id),
  KEY idx_posts_status_created (status, created_at),
  KEY idx_posts_user_created (user_id, created_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS post_media (
  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
  post_id BIGINT UNSIGNED NOT NULL,
  media_id BIGINT UNSIGNED NULL,
  media_url VARCHAR(500) NOT NULL DEFAULT '',
  media_type VARCHAR(20) NOT NULL DEFAULT 'image',
  sort_order INT NOT NULL DEFAULT 0,
  PRIMARY KEY (id),
  KEY idx_post_media_post (post_id, sort_order)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS post_likes (
  post_id BIGINT UNSIGNED NOT NULL,
  user_id BIGINT UNSIGNED NOT NULL,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  PRIMARY KEY (post_id, user_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS post_comments (
  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
  post_id BIGINT UNSIGNED NOT NULL,
  user_id BIGINT UNSIGNED NOT NULL,
  parent_comment_id BIGINT UNSIGNED NULL,
  reply_user_id BIGINT UNSIGNED NULL,
  content VARCHAR(1000) NOT NULL,
  status TINYINT UNSIGNED NOT NULL DEFAULT 1,
  moderation_status TINYINT UNSIGNED NOT NULL DEFAULT 1,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  deleted_at DATETIME(3) NULL,
  PRIMARY KEY (id),
  KEY idx_comments_post_created (post_id, created_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;