'use strict';

module.exports = app => {
    class ScheduleMonth extends app.BaseService {
        constructor(ctx) {
            super(ctx);
            this.tableName = 'schedule_month';
        }

        async getLastPlanMonth() {
            const sql = 'SELECT `yearmonth` FROM ?? WHERE `tid` = ? ORDER BY `yearmonth` DESC Limit 0,1';
            const sqlParam = [this.tableName, this.ctx.tender.id];
            return await this.db.query(sql, sqlParam);
        }

        async add(data) {
            const transaction = await this.db.beginTransaction();
            try {
                const insertData = [];
                for (const m of data) {
                    insertData.push({ tid: this.ctx.tender.id, yearmonth: m });
                }
                if (insertData.length > 0) await transaction.insert(this.tableName, insertData);
                await transaction.commit();
                return true;
            } catch (err) {
                await transaction.rollback();
                throw err;
            }
        }

        async del(data) {
            const transaction = await this.db.beginTransaction();
            try {
                for (const m of data) {
                    const delData = { tid: this.ctx.tender.id, yearmonth: m };
                    await transaction.delete(this.tableName, delData);
                    await transaction.delete(this.ctx.service.scheduleLedgerMonth.tableName, delData);
                }
                await transaction.commit();
                return true;
            } catch (err) {
                await transaction.rollback();
                throw err;
            }
        }
    }
    return ScheduleMonth;
};