text: ------------------------------------------------------------------------------------------------------------------------
  -- Structure for admins users
  ------------------------------------------------------------------------------------------------------------------------
  CREATE TYPE admin_roles AS ENUM ('guest', 'viewer', 'admin');
  
  CREATE TABLE admin (
    id_admin BIGSERIAL PRIMARY KEY,
    username VARCHAR(255) UNIQUE NOT NULL,
    password VARCHAR(255),
    role admin_roles NOT NULL
  );
  
  INSERT INTO admin (id_admin, username, password, role) VALUES
  (1, 'repli2dev', '$2y$10$UUrNvvRbZ0Rm1I3MHqPCc.x03eZWmLHFhtkxvUfr3XhqpwvutffWa', 'admin');