'use strict';

/**
 *
 *
 * @author Mai
 * @date
 * @version
 */
const Ledger = require('../lib/ledger');

module.exports = app => {

    class LedgerTag extends app.BaseService {
        /**
         * 构造函数
         *
         * @param {Object} ctx - egg全局变量
         * @return {void}
         */
        constructor(ctx) {
            super(ctx);
            this.tableName = 'ledger_history';
        }

        /** 获取最新数据
         *
         * @param {Number}tid - 标段id
         * @return {Promise<*>} 最新数据
         */
        async getLatestHistory(tid) {
            const his = await this.db.select(this.tableName, {
                where: { tid, valid: 1 },
                orders: [['in_time', 'desc']],
                limit: 1, offset: 0,
            });
            return his[0];
        }

        /**
         * 备份
         * @param {Object} tender - 标段
         * @return {Promise<void>} - 新增备份id
         * @private
         */
        async backupLedgerHistory(tender) {
            const now = new Date();
            const timestamp = (now).getTime();

            const billsHis = `${this.ctx.session.sessionProject.id}/${tender.id}/ledger/bills${timestamp}.json`;
            const bills = await this.ctx.service.ledger.getData(tender.id);
            await this.ctx.hisOss.put(this.ctx.hisOssPath + billsHis, Buffer.from(JSON.stringify(bills), 'utf8'));

            const posHis = `${this.ctx.session.sessionProject.id}/${tender.id}/ledger/pos${timestamp}.json`;
            const pos = await this.ctx.service.pos.getPosData({ tid: tender.id });
            await this.ctx.hisOss.put(this.ctx.hisOssPath + posHis, Buffer.from(JSON.stringify(pos), 'utf8'));

            const result = await this.db.insert(this.tableName, {
                pid: this.ctx.session.sessionProject.id, tid: tender.id,
                in_time: now,
                bills_file: billsHis, pos_file: posHis,
                bills_count: bills.length, pos_count: pos.length,
            });

            return result.insertId;
        }

        /**
         * 备份
         * @param {Object} tender - 标段
         * @return {Promise<void>} - 新增备份id
         * @private
         */
        async checkBackupLedgerHistory(tid, sid = 0, rid = '') {
            const sbCount = await this.ctx.service.ledger.count({ tender_id: tid });
            const spCount = await this.ctx.service.pos.count({ tid: tid });
            const ledgerHis = await this.ctx.service.ledgerHistory.getLatestHistory(tid);
            if (sbCount === ledgerHis.bills_count && spCount === ledgerHis.pos_count) return ledgerHis.id;

            const now = new Date();
            const timestamp = (now).getTime();

            const billsHis = `${this.ctx.session.sessionProject.id}/${tid}/ledger/bills${timestamp}-s.json`;
            const bills = await this.ctx.service.ledger.getData(tid);
            await this.ctx.hisOss.put(this.ctx.hisOssPath + billsHis, Buffer.from(JSON.stringify(bills), 'utf8'));

            const posHis = `${this.ctx.session.sessionProject.id}/${tid}/ledger/pos${timestamp}-s.json`;
            const pos = await this.ctx.service.pos.getPosData({ tid: tid });
            await this.ctx.hisOss.put(this.ctx.hisOssPath + posHis, Buffer.from(JSON.stringify(pos), 'utf8'));

            const result = await this.db.insert(this.tableName, {
                pid: this.ctx.session.sessionProject.id, tid, sid, rid,
                in_time: now,
                bills_file: billsHis, pos_file: posHis,
                bills_count: bills.length, pos_count: pos.length,
            });

            return result.insertId;
        }

        /**
         * 备份
         * @param {Object} revise - 修订
         * @return {Promise<void>} - 新增备份id
         * @private
         */
        async backupReviseLedgerHistory(revise) {
            const now = new Date();
            const timestamp = (now).getTime();

            const price = await this.ctx.service.revisePrice.getAllDataByCondition({ where: { rid: revise.id } });
            let sum = { total_price: 0 };

            const billsHis = `${this.ctx.session.sessionProject.id}/${revise.tid}/ledger/bills${timestamp}-r.json`;
            const bills = await this.ctx.service.reviseBills.getData(revise.tid);

            const posHis = `${this.ctx.session.sessionProject.id}/${revise.tid}/ledger/pos${timestamp}-r.json`;
            const pos = await this.ctx.service.revisePos.getData(revise.tid);
            if (price.length === 0) {
                for (const b of bills) {
                    if (!b.is_leaf) continue;
                    sum.total_price = this.ctx.helper.add(sum.total_price, b.total_price);
                }
                await this.ctx.hisOss.put(this.ctx.hisOssPath + billsHis, Buffer.from(JSON.stringify(bills), 'utf8'));
                await this.ctx.hisOss.put(this.ctx.hisOssPath + posHis, Buffer.from(JSON.stringify(pos), 'utf8'));
            } else {
                const settleStatusBills = revise.readySettle ? await this.ctx.service.settleBills.getAllDataByCondition({ where: { settle_id: revise.readySettle.id }}): [];
                this.ctx.helper.assignRelaData(bills, [
                    { data: settleStatusBills, fields: ['settle_status'], prefix: '', relaId: 'lid' },
                ]);
                const reviseTree = new Ledger.reviseTree(this.ctx, { id: 'ledger_id', pid: 'ledger_pid', order: 'order', level: 'level', rootId: -1 });
                reviseTree.loadRevisePrice(price, this.ctx.tender.info.decimal);
                reviseTree.loadDatas(bills);
                sum = reviseTree.sum();
                await this.ctx.hisOss.put(this.ctx.hisOssPath + billsHis, Buffer.from(JSON.stringify(reviseTree.getUpdateReviseData()), 'utf8'));
                await this.ctx.hisOss.put(this.ctx.hisOssPath + posHis, Buffer.from(JSON.stringify(pos), 'utf8'));
            }

            const result = await this.db.insert(this.tableName, {
                pid: this.ctx.session.sessionProject.id, tid: revise.tid,
                rid: revise.id, rorder: revise.corder,
                in_time: now,
                bills_file: billsHis, pos_file: posHis, valid: 0,
                bills_count: bills.length, pos_count: pos.length,
            });

            return [result.insertId, sum];
        }
    }

    return LedgerTag;
};