'use strict';

/**
 * 版本数据模型
 *
 * @author CaiAoLin
 * @date 2017/10/25
 * @version
 */
const shenpiConst = require('../const/shenpi');

module.exports = app => {

    class ShenpiGroup extends app.BaseService {

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

        async getGroupList(tid, type, transaction = null) {
            return transaction ? await transaction.select(this.tableName, { where: { tid, sp_type: type } }) : await this.getAllDataByCondition({ where: { tid, sp_type: type } });
        }

        async getOneGroup(id) {
            const group = await this.getDataById(id);
            if (group.change_type) group.change_type = JSON.parse(group.change_type);
            group.auditGroupList = await this.ctx.service.shenpiAudit.getAuditGroupList(group.tid, group.sp_type, shenpiConst.sp_status.gdspl, group.id);
            return group;
        }

        async saveGroup(tid, data) {
            const transaction = await this.db.beginTransaction();
            try {
                const sp_type = shenpiConst.sp_type[data.code];
                const groupList = await this.getGroupList(tid, sp_type);
                if (data.groupId) {
                    const info = await this.getDataById(data.groupId);
                    if (!info) {
                        throw '该审批组不存在';
                    }
                    if (this._.findIndex(groupList, function(item) {
                        return item.id !== data.groupId && item.name === data.name;
                    }) !== -1) {
                        throw '该审批组名称已存在，请更改其它名称';
                    }
                    const updateData = {
                        id: info.id,
                        name: data.name,
                    };
                    if (data.code === 'change' && data.change_type) {
                        updateData.change_type = JSON.stringify(data.change_type);
                    }
                    await transaction.update(this.tableName, updateData);
                } else {
                    const insertData = {
                        tid, sp_type, name: data.name,
                        is_select: 1, change_type: data.code === 'change' && data.change_type ? JSON.stringify(data.change_type) : null,
                        create_time: new Date(),
                    };
                    const updateGroupData = this._.map(groupList, function(item) {
                        return {
                            id: item.id,
                            is_select: 0,
                        };
                    });
                    if (updateGroupData.length > 0) await transaction.updateRows(this.tableName, updateGroupData);
                    const result = await transaction.insert(this.tableName, insertData);
                    data.groupId = result.insertId;
                    // 判断是否存在group_id 为 0的，则自动填写
                    const auditList = await this.ctx.service.shenpiAudit.getAuditList(tid, sp_type, shenpiConst.sp_status.gdspl);
                    if (auditList && auditList.length > 0) {
                        const updateData = this._.map(auditList, function(item) {
                            return {
                                id: item.id,
                                sp_group: data.groupId,
                            };
                        });
                        await transaction.updateRows(this.ctx.service.shenpiAudit.tableName, updateData);
                    }
                }
                await transaction.commit();
                return { group: await this.getOneGroup(data.groupId) };
            } catch (err) {
                await transaction.rollback();
                throw err;
            }
        }

        async changeGroup(data) {
            const info = await this.getDataById(data.groupId);
            if (!info) {
                throw '该审批组不存在';
            }
            const groupList = await this.getGroupList(info.tid, info.sp_type);
            const updateGroupData = this._.map(groupList, function(item) {
                return {
                    id: item.id,
                    is_select: item.id === info.id ? 1 : 0,
                };
            });
            if (updateGroupData.length > 0) return await this.db.updateRows(this.tableName, updateGroupData);
        }

        async deleteGroup(data) {
            const transaction = await this.db.beginTransaction();
            try {
                const group = await this.getDataById(data.groupId);
                if (!group) throw '该审批组不存在';
                // 移除审批人
                await transaction.delete(this.ctx.service.shenpiAudit.tableName, { sp_group: group.id });
                await transaction.delete(this.tableName, { id: group.id });
                // 第一个审批组设置为is_select=1
                const groupList = await this.getGroupList(group.tid, group.sp_type, transaction);
                if (groupList && groupList.length > 0) {
                    const updateGroupData = this._.map(groupList, function(item) {
                        return {
                            id: item.id,
                            is_select: item.id === groupList[0].id ? 1 : 0,
                        };
                    });
                    if (updateGroupData.length > 0) await transaction.updateRows(this.tableName, updateGroupData);
                }
                await transaction.commit();
                return true;
            } catch (err) {
                await transaction.rollback();
                throw err;
            }
        }

        async getGroupBySelect(tid, sp_type) {
            return await this.getDataByCondition({ tid, sp_type, is_select: 1 });
        }

        async getGroupListByChangeType(tid, sp_type, change_type) {
            const sql = 'select * from ?? where tid= ? and sp_type= ? and JSON_CONTAINS(change_type, json_object(?, true)) order by id asc';
            const sqlParam = [this.tableName, tid, sp_type, change_type];
            return await this.db.query(sql, sqlParam);
        }

        async getSelectGroupByChangeType(tid, sp_type, change_type, group_id = 0) {
            if (group_id !== 0) {
                const group = await this.getDataById(group_id);
                if (group) return group;
            }
            // 查找变更选中的审批组id，没有这为默认审批组或null
            const result = await this.getGroupListByChangeType(tid, sp_type, change_type);
            if (result && result.length > 0) {
                const hadSelect = this._.find(result, function(item) {
                    return item.is_select === 1;
                });
                if (hadSelect) {
                    return hadSelect;
                }
                return result[0];
            }
            return null;
        }
    }

    return ShenpiGroup;
};