create room message table

CREATE TABLE room_messages (
  id serial NOT NULL,
  room_name varchar(255) NOT NULL,
  request_id INT NOT NULL,
  requester_id INT NOT NULL,
  traveller_id INT NOT NULL,
  active BOOLEAN NOT NULL DEFAULT TRUE ,
  created_at TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL,
  updated_at TIMESTAMP(0) WITHOUT TIME ZONE,
  CONSTRAINT room_messages_pk PRIMARY KEY (id),
  CONSTRAINT room_messages_name_unique UNIQUE (room_name)
);

CREATE INDEX room_msg_name_idx ON room_messages (room_name);
CREATE INDEX room_msg_req_id_requester_traveller_idx ON room_messages (request_id, requester_id, traveller_id);
CREATE INDEX room_msg_requester_id_idx ON room_messages (requester_id);
CREATE INDEX room_msg_traveller_id_idx ON room_messages (traveller_id);
CREATE INDEX room_msg_updated_at_idx ON room_messages (updated_at);

CREATE TABLE message_histories (
  id serial NOT NULL,
  message_id VARCHAR(255) NOT NULL,
  room_id INT NOT NULL,
  from_id INT NOT NULL,
  to_id INT NOT NULL,
  body VARCHAR(2048) NOT NULL,
  message_type VARCHAR(255) NOT NULL,
  created_at TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL,
  updated_at TIMESTAMP(0) WITHOUT TIME ZONE,
  CONSTRAINT message_histories_pk PRIMARY KEY (id),
  CONSTRAINT message_histories_msgid_unique UNIQUE (message_id)
);

CREATE INDEX message_histories_msgid_idx ON message_histories (message_id);
CREATE INDEX message_histories_room_id_idx ON message_histories (room_id);
CREATE INDEX message_histories_created_at_idx ON message_histories (created_at);