'use strict';

/**
 *
 *
 * @author Mai
 * @date 2018/6/12
 * @version
 */

const audit = require('../const/audit').revise;

module.exports = app => {
    class LedgerRevise extends app.BaseService {

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

        /**
         * 获取标段下，修订（分页，且按时间倒序）
         * @param {Number}tid - 标段id
         * @returns {Promise<*>} - ledger_change下所有数据，并关联 project_account(读取提交人名称、单位、公司)
         */
        async getReviseList (tid) {
            const sql = 'SELECT lc.id, lc.tid, lc.corder, lc.in_time, lc.uid, lc.begin_time, lc.end_time, lc.times, lc.status, lc.valid,' +
                '    pa.name As user_name, pa.role As user_role, pa.company As user_company' +
                '  FROM ' + this.tableName + ' As lc' +
                '  INNER JOIN ' + this.ctx.service.projectAccount.tableName + ' As pa ON lc.uid = pa.id' +
                '  WHERE lc.tid = ?' +
                '  ORDER BY lc.in_time DESC' +
                '  LIMIT ?, ?';
            const Len = this.app.config.pageSize;
            const sqlParam = [tid, (this.ctx.page - 1) * Len, Len];
            return await this.db.query(sql, sqlParam);
        }

        async getLastestRevise(tid, valid = true) {
            const sql = 'SELECT lc.*,' +
                '    pa.name As user_name, pa.role As user_role, pa.company As user_company' +
                '  FROM ' + this.tableName + ' As lc' +
                '  INNER JOIN ' + this.ctx.service.projectAccount.tableName + ' As pa ON lc.uid = pa.id' +
                '  WHERE lc.tid = ? ' + (valid ? ' And lc.valid' : '') +
                '  ORDER BY lc.in_time DESC' +
                '  LIMIT 0, 1';
            const sqlParam = [tid];
            return await this.db.queryOne(sql, sqlParam);
        }

        async getRevise(tid, rid) {
            const sql = 'SELECT lc.*,' +
                '    pa.name As user_name, pa.role As user_role, pa.company As user_company' +
                '  FROM ' + this.tableName + ' As lc' +
                '  INNER JOIN ' + this.ctx.service.projectAccount.tableName + ' As pa ON lc.uid = pa.id' +
                '  WHERE lc.tid = ? and lc.id = ? ' +
                '  ORDER BY lc.in_time DESC' +
                '  LIMIT 0, 1';
            const sqlParam = [tid, rid];
            return await this.db.queryOne(sql, sqlParam);
        }

        /**
         * 获取新增修订的序号
         * @param {Number}tid - 标段id
         * @returns {Promise<number>}
         */
        async getNewOrder(tid) {
            const sql = 'SELECT Max(`corder`) As max_order FROM ' + this.tableName + ' Where `tid` = ? and `valid`';
            const sqlParam = [tid];
            const result = await this.db.queryOne(sql, sqlParam);
            return result.max_order || 0;
            // if (result && result.max_order) {
            //     return result.max_order;
            // } else {
            //     return 0;
            // }
        }

        async _initReviseBills(transaction, tid) {
            const sql = 'Insert Into ' + this.ctx.service.reviseBills.tableName +
                '  (id, code, b_code, name, unit, source, remark, ledger_id, ledger_pid, level, `order`, full_path, is_leaf,' +
                '     quantity, total_price, unit_price, drawing_code, memo, dgn_qty1, dgn_qty2, deal_qty, deal_tp,' +
                '     sgfh_qty, sgfh_tp, sjcl_qty, sjcl_tp, qtcl_qty, qtcl_tp, node_type, crid, tender_id)' +
                '  Select id, code, b_code, name, unit, source, remark, ledger_id, ledger_pid, level, `order`, full_path, is_leaf,' +
                '      quantity, total_price, unit_price, drawing_code, memo, dgn_qty1, dgn_qty2, deal_qty, deal_tp,' +
                '      sgfh_qty, sgfh_tp, sjcl_qty, sjcl_tp, qtcl_qty, qtcl_tp, node_type, crid, tender_id' +
                '  From ' + this.ctx.service.ledger.tableName +
                '  Where `tender_id` = ?';
            const sqlParam = [tid];
            await transaction.query(sql, sqlParam);
        }

        async _initRevisePos(transaction, tid) {
            const sql = 'Insert Into ' + this.ctx.service.revisePos.tableName +
                '  (id, tid, lid, name, drawing_code, quantity, add_stage, add_times, add_user,' +
                '     sgfh_qty, sjcl_qty, qtcl_qty, crid, in_time, porder)' +
                '  Select id, tid, lid, name, drawing_code, quantity, add_stage, add_times, add_user,' +
                '     sgfh_qty, sjcl_qty, qtcl_qty, crid, in_time, porder' +
                '  From ' + this.ctx.service.pos.tableName +
                '  Where `tid` = ?';
            const sqlParam = [tid];
            await transaction.query(sql, sqlParam);
        }

        async _initReviseAuditor(transaction, rid, order) {
            const inTime = new Date();
            const preRevise = order > 0 ? await this.getDataByCondition({tid: this.ctx.tender.id, corder: order}) : null;
            const newAuditors = [];
            const auditors = preRevise
                ? await this.ctx.service.reviseAudit.getAuditors(preRevise.id, preRevise.ledger_times)
                : await this.ctx.service.ledgerAudit.getAuditors(this.ctx.tender.id, this.ctx.tender.data.ledger_times);
            for (const a of auditors) {
                newAuditors.push({
                    tender_id: this.ctx.tender.id,
                    rid: rid,
                    in_time: inTime,
                    audit_order: a.audit_order,
                    audit_id: a.audit_id,
                    times: 1,
                    status: audit.status.uncheck,
                });
            }
            await transaction.insert(this.ctx.service.reviseAudit.tableName, newAuditors);
        }

        /**
         * 备份
         * @param {Object} revise - 修订
         * @returns {Promise<void>}
         * @private
         */
        async backupReviseHistoryFile(revise) {
            const timestamp = (new Date()).getTime();

            const billsHis = '/revise/bills' + timestamp + '.json';
            const bills = await this.ctx.service.reviseBills.getData(revise.tid);
            await this.ctx.helper.saveBufferFile(JSON.stringify(bills), this.ctx.app.config.filePath + billsHis);

            const posHis = '/revise/pos' + timestamp + '.json';
            const pos = await this.ctx.service.revisePos.getData(revise.tid);
            await this.ctx.helper.saveBufferFile(JSON.stringify(pos), this.ctx.app.config.filePath + posHis);

            return [billsHis, posHis];
        }

        /**
         * 新增修订
         * @param {Number}tid - 标段id
         * @param {Number}uid - 提交人id
         * @returns {Promise<void>}
         */
        async add(tid, uid) {
            if (!tid && !uid) {
                throw '数据错误';
            }
            const maxOrder = await this.getNewOrder(tid);
            const data = {
                id: this.uuid.v4(), tid: tid, uid: uid,
                corder: maxOrder + 1, in_time: new Date(), status: audit.status.uncheck,
            };
            const transaction = await this.db.beginTransaction();
            try {
                const result = await transaction.insert(this.tableName, data);
                if (result.affectedRows !== 1) {
                    throw '新增台账修订失败';
                }
                await transaction.delete(this.ctx.service.reviseBills.tableName, {tender_id: tid});
                await this._initReviseBills(transaction, tid, data.id);
                await transaction.delete(this.ctx.service.revisePos.tableName, {tid: tid});
                await this._initRevisePos(transaction, tid, data.id);
                await this._initReviseAuditor(transaction, data.id, maxOrder);
                await transaction.commit();
                return data;
            } catch(err) {
                await transaction.rollback();
                throw err;
            }
        }

        /**
         * 作废修订
         * @param revise
         * @returns {Promise<void>}
         */
        async cancelRevise(revise) {
            const [billsHis, posHis] = await this.backupReviseHistoryFile(revise);
            const result = await this.db.update(this.tableName, {
                id: revise.id, valid: false, end_time: new Date(),
                bills_file: billsHis, pos_file: posHis,
            });
            return result.affectedRows === 1;
        }

    }

    return LedgerRevise;
};