'use strict';

/**
 *
 *
 * @author Mai
 * @date
 * @version
 */

const validField = ['lid', 'pos_id', 'share', 'color', 'comment'];

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_tag';
        }

        /**
         * 获取台账、期所有标段
         * @param {Number} tid - 标段id
         * @param {Number} sid - 期id(-1时查询台账分解全部标签)
         * @returns {Promise<void>}
         */
        async getDatas(tid, sid = -1, settleId = -1) {
            const sql = 'SELECT la.id, la.uid, la.lid, la.pos_id, la.share, la.color, la.comment, pa.name as u_name FROM ' + this.tableName + ' la ' +
                '  LEFT JOIN ' + this.ctx.service.projectAccount.tableName + ' pa ON la.uid = pa.id' +
                '  WHERE la.tid = ? and la.sid = ? and la.settle_id = ? and (la.uid = ? or la.share) ORDER BY la.create_time DESC';
            return await this.db.query(sql, [tid, sid, settleId, this.ctx.session.sessionUser.accountId]);
        }

        /**
         * 过滤无效字段，容错
         * @param data
         * @private
         */
        _filterInvalidField(data) {
            for (const prop in data) {
                if (validField.indexOf(prop) === -1) {
                    delete data[prop];
                }
            }
        }

        async _addTag(data) {
            this._filterInvalidField(data);
            data.create_time = new Date();
            data.modify_time = data.create_time;
            data.uid = this.ctx.session.sessionUser.accountId;
            data.tid = this.ctx.tender.id;
            data.pid = this.ctx.tender.data.project_id;
            if (this.ctx.stage) {
                data.sid = this.ctx.stage.id;
                data.sorder = this.ctx.stage.order;
            }
            if (this.ctx.settle) {
                data.settle_id = this.ctx.settle.id;
                data.settle_order = this.ctx.settle.settle_order;
            }
            const result = await this.db.insert(this.tableName, data);
            data.id = result.insertId;
            data.u_name = this.ctx.session.sessionUser.name;
            return data;
        }

        async _delTag(id) {
            const tag = await this.getDataById(id);
            if (tag.uid !== this.ctx.session.sessionUser.accountId) throw '您无权删除该数据';

            await this.deleteById(id);
            return id;
        }

        async _updateTag(data) {
            const tag = await this.getDataById(data.id);
            if (tag.uid !== this.ctx.session.sessionUser.accountId) throw '您无权修改该数据';

            this._filterInvalidField(data);
            data.modify_time = new Date();
            data.id = tag.id;
            const result = await this.db.update(this.tableName, data);
            if (result.affectedRows === 1) return data;
        }

        async update(data) {
            const result = {};
            if (data.add) result.add = await this._addTag(data.add);
            if (data.del) result.del = await this._delTag(data.del);
            if (data.update) result.update = await this._updateTag(data.update);
            return result;
        }
    }

    return LedgerTag;
};