import {Server, Socket} from "socket.io";
import db from "../../config/db";
import {SocketEvents} from "../events";

import {log_error} from "../util";
import TasksControllerV2 from "../../controllers/tasks-controller-v2";

interface ITaskSubscribeRequest {
  mode: number;
  task_id: string;
  user_id: string;
  team_member_id: string;
}

export async function on_task_subscriber_change(_io: Server, socket: Socket, data?: ITaskSubscribeRequest) {
  if (!data) return;

  try {
    const isSubscribe = data.mode == 0;
    const q = isSubscribe
      ? `INSERT INTO task_subscribers (user_id, task_id, team_member_id, action)
         VALUES ($1, $2, $3, 'WHEN_DONE');`
      : `DELETE
         FROM task_subscribers
         WHERE user_id = $1
           AND task_id = $2
           AND team_member_id = $3;`;
    await db.query(q, [data.user_id, data.task_id, data.team_member_id]);

    const subscribers = await TasksControllerV2.getTaskSubscribers(data.task_id);
    socket.emit(SocketEvents.TASK_SUBSCRIBERS_CHANGE.toString(), subscribers);

    return;
  } catch (error) {
    log_error(error);
  }
}