TK-FB-Project/api.hyungi.net/models/vacationRequestModel.js

/**
 * vacationRequestModel.js
 * 휴가 신청 관련 데이터베이스 쿼리 모델
 */

const { getDb } = require('../dbPool');

const vacationRequestModel = {
  /**
   * 휴가 신청 생성
   */
  async create(requestData, callback) {
    try {
      const db = await getDb();
      const query = `INSERT INTO vacation_requests SET ?`;
      const [result] = await db.query(query, requestData);
      callback(null, result);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 휴가 신청 목록 조회 (필터링 지원)
   */
  async getAll(filters = {}, callback) {
    try {
      const db = await getDb();

      let query = `
        SELECT
          vr.*,
          w.worker_name,
          vt.type_name as vacation_type_name,
          vt.deduct_days as vacation_deduct_days,
          requester.name as requester_name,
          reviewer.name as reviewer_name
        FROM vacation_requests vr
        INNER JOIN workers w ON vr.worker_id = w.worker_id
        INNER JOIN vacation_types vt ON vr.vacation_type_id = vt.id
        LEFT JOIN users requester ON vr.requested_by = requester.user_id
        LEFT JOIN users reviewer ON vr.reviewed_by = reviewer.user_id
        WHERE 1=1
      `;

      const params = [];

      // 작업자 필터
      if (filters.worker_id) {
        query += ` AND vr.worker_id = ?`;
        params.push(filters.worker_id);
      }

      // 상태 필터
      if (filters.status) {
        query += ` AND vr.status = ?`;
        params.push(filters.status);
      }

      // 기간 필터
      if (filters.start_date) {
        query += ` AND vr.start_date >= ?`;
        params.push(filters.start_date);
      }

      if (filters.end_date) {
        query += ` AND vr.end_date <= ?`;
        params.push(filters.end_date);
      }

      // 휴가 유형 필터
      if (filters.vacation_type_id) {
        query += ` AND vr.vacation_type_id = ?`;
        params.push(filters.vacation_type_id);
      }

      query += ` ORDER BY vr.created_at DESC`;

      const [rows] = await db.query(query, params);
      callback(null, rows);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 특정 휴가 신청 조회
   */
  async getById(requestId, callback) {
    try {
      const db = await getDb();
      const query = `
        SELECT
          vr.*,
          w.worker_name,
          w.phone_number as worker_phone,
          w.email as worker_email,
          vt.type_name as vacation_type_name,
          vt.type_code as vacation_type_code,
          vt.deduct_days as vacation_deduct_days,
          requester.name as requester_name,
          requester.username as requester_username,
          reviewer.name as reviewer_name,
          reviewer.username as reviewer_username
        FROM vacation_requests vr
        INNER JOIN workers w ON vr.worker_id = w.worker_id
        INNER JOIN vacation_types vt ON vr.vacation_type_id = vt.id
        LEFT JOIN users requester ON vr.requested_by = requester.user_id
        LEFT JOIN users reviewer ON vr.reviewed_by = reviewer.user_id
        WHERE vr.request_id = ?
      `;
      const [rows] = await db.query(query, [requestId]);
      callback(null, rows);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 휴가 신청 수정
   */
  async update(requestId, updateData, callback) {
    try {
      const db = await getDb();
      const query = `UPDATE vacation_requests SET ? WHERE request_id = ?`;
      const [result] = await db.query(query, [updateData, requestId]);
      callback(null, result);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 휴가 신청 삭제
   */
  async delete(requestId, callback) {
    try {
      const db = await getDb();
      const query = `DELETE FROM vacation_requests WHERE request_id = ?`;
      const [result] = await db.query(query, [requestId]);
      callback(null, result);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 휴가 신청 승인/거부
   */
  async updateStatus(requestId, statusData, callback) {
    try {
      const db = await getDb();
      const query = `
        UPDATE vacation_requests
        SET
          status = ?,
          reviewed_by = ?,
          reviewed_at = NOW(),
          review_note = ?
        WHERE request_id = ?
      `;
      const [result] = await db.query(query, [
        statusData.status,
        statusData.reviewed_by,
        statusData.review_note || null,
        requestId
      ]);
      callback(null, result);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 특정 작업자의 대기 중인 휴가 신청 수
   */
  async getPendingCount(workerId, callback) {
    try {
      const db = await getDb();
      const query = `
        SELECT COUNT(*) as count
        FROM vacation_requests
        WHERE worker_id = ? AND status = 'pending'
      `;
      const [rows] = await db.query(query, [workerId]);
      callback(null, rows);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 특정 작업자의 승인된 휴가 일수 합계 (특정 기간)
   */
  async getApprovedDaysInPeriod(workerId, startDate, endDate, callback) {
    try {
      const db = await getDb();
      const query = `
        SELECT COALESCE(SUM(days_used), 0) as total_days
        FROM vacation_requests
        WHERE worker_id = ?
          AND status = 'approved'
          AND start_date >= ?
          AND end_date <= ?
      `;
      const [rows] = await db.query(query, [workerId, startDate, endDate]);
      callback(null, rows);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 휴가 기간 중복 체크
   */
  async checkOverlap(workerId, startDate, endDate, excludeRequestId = null, callback) {
    try {
      const db = await getDb();
      let query = `
        SELECT COUNT(*) as count
        FROM vacation_requests
        WHERE worker_id = ?
          AND status IN ('pending', 'approved')
          AND (
            (start_date <= ? AND end_date >= ?) OR
            (start_date <= ? AND end_date >= ?) OR
            (start_date >= ? AND end_date <= ?)
          )
      `;
      const params = [workerId, startDate, startDate, endDate, endDate, startDate, endDate];

      if (excludeRequestId) {
        query += ` AND request_id != ?`;
        params.push(excludeRequestId);
      }

      const [rows] = await db.query(query, params);
      callback(null, rows);
    } catch (error) {
      callback(error);
    }
  },

  /**
   * 모든 대기 중인 휴가 신청 (관리자용)
   */
  async getAllPending(callback) {
    try {
      const db = await getDb();
      const query = `
        SELECT
          vr.*,
          w.worker_name,
          vt.type_name as vacation_type_name,
          requester.name as requester_name
        FROM vacation_requests vr
        INNER JOIN workers w ON vr.worker_id = w.worker_id
        INNER JOIN vacation_types vt ON vr.vacation_type_id = vt.id
        LEFT JOIN users requester ON vr.requested_by = requester.user_id
        WHERE vr.status = 'pending'
        ORDER BY vr.created_at ASC
      `;
      const [rows] = await db.query(query);
      callback(null, rows);
    } catch (error) {
      callback(error);
    }
  }
};

module.exports = vacationRequestModel;