-- Corre isto no phpMyAdmin (separador "SQL") se já tinhas a base de dados criada,
-- para adicionares o suporte a anexos.

CREATE TABLE IF NOT EXISTS attachments (
  id INT AUTO_INCREMENT PRIMARY KEY,
  ticket_id VARCHAR(20) NOT NULL,
  original_name VARCHAR(255) NOT NULL,
  stored_name VARCHAR(255) NOT NULL,
  mime_type VARCHAR(150) DEFAULT '',
  size_bytes INT DEFAULT 0,
  uploaded_at BIGINT NOT NULL,
  FOREIGN KEY (ticket_id) REFERENCES tickets(id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;