// router
import express from "express";
const router = express.Router();
export default router;

// db
import { db } from "#db";
import { sql } from "slonik";

// api

// error
// import { ApiError } from "#exceptions/api-error.ts";

// dayjs
import dayjs from "dayjs";
import utc from "dayjs/plugin/utc.js";
dayjs.extend(utc);
import timezone from "dayjs/plugin/timezone.js";
dayjs.extend(timezone);

import { v7 as uuidv7 } from "uuid";
import { UserUtils } from "#utils/user-utils.js";
import { RouterUtils } from "#utils/router-utils.js";
import { TasksManagementApi } from "#api";
import { EventsService } from "#modules/events-management/events-service.js";

dayjs.extend(utc);

router.post("/task", async (req, res, next) => {
  try {
    // валидация запроса
    const {
      name,
      startDate,
      endDate,
      isTodo,
      taskBlockId,
      programPointId,
      executors,
      roomId,
      accountableId,
    } = TasksManagementApi.POST_Task.req.parse(req.body);

    const userId = UserUtils.getUserFromReq(req).userId;
    //

    // проверка прав
    const eventId = await EventsService.getEventIdByOther({ taskBlockId });
    await EventsService.checkEventAccess(userId, eventId);
    //

    const taskId = uuidv7();

    // create task
    await db.query(
      sql.unsafe`
      insert into ev.tasks
        (task_id, name, start_date, end_date, accountable_id, is_todo, task_block_id, program_point_id, room_id)
      values
        (${taskId}, ${name}, ${startDate}, ${endDate}, ${accountableId}, ${isTodo}, ${taskBlockId}, ${programPointId}, ${roomId})`,
    );

    // add executors
    for (const executorId of executors) {
      await db.query(
        sql.unsafe`
        insert into ev.task_executors
          (task_id, role)
        values
          (${taskId}, ${executorId})`,
      );
    }

    RouterUtils.validAndSendResponse(TasksManagementApi.POST_Task.res, res, {
      code: "success",
    });
  } catch (e) {
    next(e);
  }
});

router.patch("/task", async (req, res, next) => {
  try {
    // валидация запроса
    const {
      taskId,
      endDate,
      startDate,
      isTodo,
      name,
      programPointId,
      executors,
      roomId,
      accountableId,
    } = TasksManagementApi.PATCH_Task.req.parse(req.body);

    const userId = UserUtils.getUserFromReq(req).userId;

    // проверка прав
    const eventId = await EventsService.getEventIdByOther({ taskId });
    await EventsService.checkEventAccess(userId, eventId);

    // edit task
    await db.query(
      sql.unsafe`
      UPDATE ev.tasks
      SET
        ${sql.join(
          [
            name !== undefined
              ? sql.fragment`name = ${name}`
              : sql.fragment`name = name`,
            startDate !== undefined
              ? sql.fragment`start_date = ${startDate}`
              : sql.fragment`start_date = start_date`,
            endDate !== undefined
              ? sql.fragment`end_date = ${endDate}`
              : sql.fragment`end_date = end_date`,
            isTodo !== undefined
              ? sql.fragment`is_todo = ${isTodo}`
              : sql.fragment`is_todo = is_todo`,
            programPointId !== undefined
              ? sql.fragment`program_point_id = ${programPointId}`
              : sql.fragment`program_point_id = program_point_id`,
            roomId !== undefined
              ? sql.fragment`room_id = ${roomId}`
              : sql.fragment`room_id = room_id`,
            accountableId !== undefined
              ? sql.fragment`accountable_id = ${accountableId}`
              : sql.fragment`accountable_id = accountable_id`,
          ],
          sql.fragment`, `,
        )}
      WHERE task_id = ${taskId}
      `,
    );

    if (executors && executors.length) {
      // del executors
      await db.query(
        sql.unsafe`
      delete from ev.task_executors
      where
        task_id = ${taskId}`,
      );

      // add executors
      // TODO: вынести и слить с event-block
      for (const executorId of executors) {
        await db.query(
          sql.unsafe`
        insert into ev.task_executors
          (task_id, role_id)
        values
          (${taskId}, ${executorId})`,
        );
      }
    }

    RouterUtils.validAndSendResponse(TasksManagementApi.PATCH_Task.res, res, {
      code: "success",
    });
  } catch (e) {
    next(e);
  }
});