CREATE TABLE IF NOT EXISTS media_assets (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  asset_key TEXT NOT NULL UNIQUE,
  original_name TEXT NOT NULL,
  mime_type TEXT NOT NULL,
  extension TEXT NOT NULL,
  bytes INTEGER NOT NULL,
  width INTEGER NOT NULL,
  height INTEGER NOT NULL,
  original_path TEXT NOT NULL,
  derived_path TEXT NOT NULL,
  thumbnail_path TEXT NOT NULL,
  alt_text TEXT NOT NULL DEFAULT '',
  source_text TEXT NOT NULL DEFAULT '',
  copyright_text TEXT NOT NULL DEFAULT '',
  authorization_status TEXT NOT NULL DEFAULT 'pending' CHECK (authorization_status IN ('pending', 'authorized', 'restricted')),
  status TEXT NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'trash', 'deleted')),
  created_by INTEGER,
  created_at TEXT NOT NULL,
  updated_at TEXT NOT NULL,
  deleted_at TEXT,
  FOREIGN KEY (created_by) REFERENCES admin_users(id)
);

CREATE INDEX IF NOT EXISTS idx_media_assets_status_created ON media_assets(status, created_at DESC);