/**
 * Created by Mai on 2017/4/14.
 * 清单模板，新建项目使用
 */
let counter = require("../../../public/counter/counter.js");
let mongoose = require('mongoose');
let BillsTemplates = mongoose.model('temp_bills');
let BillsTemplateDAO = function(){};
const BillsTemplateModel = require("../../pm/models/templates/bills_template_model");
const uuidV1 = require('uuid/v1');
const billsUtil = require('../../../public/billsUtil');

BillsTemplateDAO.prototype.getTemplate = function (type, callback) {
    if (callback) {
        BillsTemplates.find({'$or': [{tempType: type, deleteInfo: null}, {tempType: type, 'deleteInfo.deleted': {$in: [null, false]}}]}, '-_id').exec()
            .then(function (result, err) {
                if (err) {
                    callback(1, '找不到模板', null);
                } else {
                    callback(0, '', result);
                }
            });
        return null;
    } else {
        return BillsTemplates.find({'$or': [{tempType: type, deleteInfo: null}, {tempType: type, 'deleteInfo.deleted': {$in: [null, false]}}]}, '-_id').exec();
    }
};
BillsTemplateDAO.prototype.updateTemplate = function (userID, tempType, datas, callback) {
    var data, project, updateLength = 0, hasError = false, deleteInfo = null;
    var updateAll = function (err) {
        if (!err){
            updateLength += 1;
            if (updateLength === datas.length) {
                callback(0, '', datas);
            }
        } else {
            hasError = true;
            callback(1, '升级数据出错', null);
        }
    };
    if (datas){
        for (var i = 0; i < datas.length && !hasError; i++){
            data = datas[i];
            if (data.type === 'update') {
                BillsTemplates.update({tempType: tempType, ID: data.data.ID}, data.data, updateAll)
            } else if (data.type === 'new') {
                data.data['tempType'] = tempType;
                newProject = new BillsTemplates(data.data);
                newProject.save(updateAll);
            } else if (data.type === 'delete') {
                deleteInfo = {};
                deleteInfo['deleted'] = true;
                deleteInfo['deleteDateTime'] = new Date();
                deleteInfo['deleteBy'] = userID;
                BillsTemplates.update({ID: data.data.ID}, {deleteInfo: deleteInfo}, updateAll);
            } else {
                hasError = true;
                callback(1, '升级数据出错', null)
            }
        }
    }
};
BillsTemplateDAO.prototype.getNewBillsTemplateID = function (count, callback) {
    counter.counterDAO.getIDAfterCount(counter.moduleName.template_bills, count, function (err, result) {
        var highID = result.sequence_value;
        if (!err) {
            callback(0, '', {lowID: highID - count + 1, highID: highID});
        } else {
            callback(1, '获取主键失败', null);
        }
    });
}

//过滤掉非必要清单的清单模板
BillsTemplateDAO.prototype.getNeedfulTemplate = async function (templateLibID) {
    let billsTemplateModel = new BillsTemplateModel();
    let templateData = await billsTemplateModel.getTemplateDataForNewProj(templateLibID);
    let billsDatas = JSON.parse(JSON.stringify(templateData));
    //设置同层序号，为了后续过滤掉非必要模板数据、插入接口清单数据后，能生成正确的顺序的树
    setSeqByNext(billsDatas);
    function getFlag(data) {
        return data.flags && data.flags[0] && data.flags[0].flag || '';
    }
    //过滤掉不含清单固定类别的模板数据 （导入接口只包含必要的清单模板数据）
    let needfulDatas = billsDatas.filter(data => getFlag(data));
    sortSeqToNextSibling(needfulDatas);
    //sortToTreeData(needfulDatas);
    billsUtil.resetTreeData(needfulDatas, uuidV1);
    return needfulDatas;
};

/*
 * 将同层的清单数据，按照树结构顺序设置序号
 * @param {Array} billsData(清单模板数据)
 * */
function setSeqByNext(billsData) {
    //获取同层数据
    let sameDepthDatas = {};    //按照ParentID区分
    for (let data of billsData) {
        if (!sameDepthDatas[data.ParentID]) {
            sameDepthDatas[data.ParentID] = [];
        }
        sameDepthDatas[data.ParentID].push(data);
    }
    //设置同层节点的序号
    for (let attr in sameDepthDatas) {
        let sameDepth = sameDepthDatas[attr];
        let sortedData = getDataBySorted(sameDepth),
            seq = 1;
        sortedData.forEach((data => data.seq = seq++));
    }
    //将每个同层的数据设置好序号
    //获取根据树结构NextSibling排序的同层数据
    function getDataBySorted(datas) {
        //链断了返回空数组
        let target = [];
        let last = datas.find(data => data.NextSiblingID == -1);
        while (last && target.length !== datas.length) {
            target.push(last);
            last = datas.find(data => data.NextSiblingID == last.ID);
            if (!last) {
                break;
            }
        }
        //链断了即清单模板数据的树结构有问题，这里做下兼容：
        // 1.数据没问题，返回排序过后的同层数据数组    2.数据有问题，返回不排序的同层数组
        return target.length === datas.length ? target.reverse() : datas;
    }
}

//根据同层序号，设置NextSiblingID
function sortSeqToNextSibling(needfulData) {
    let sameDepthDatas = {};    //按照ParentID区分
    for (let data of needfulData) {
        if (!sameDepthDatas[data.ParentID]) {
            sameDepthDatas[data.ParentID] = [];
        }
        sameDepthDatas[data.ParentID].push(data);
    }
    for (let attr in sameDepthDatas) {
        let sameDepth = sameDepthDatas[attr];
        sameDepth.sort((a, b) => a.seq - b.seq);
        for (let i = 0; i < sameDepth.length; i++) {
            let cur = sameDepth[i],
                next = sameDepth[i + 1];
            cur.NextSiblingID = next ? next.ID : -1;
        }
    }
}

//清单模板数据转换为uuID树结构数据
function sortToTreeData(needfulData) {
    sortSeqToNextSibling(needfulData);
    let uuidMaping = {};
    uuidMaping['-1'] = -1;
    //建立uuid-ID映射
    for(let bill of needfulData){
        uuidMaping[bill.ID] = uuidV1();
    }
    const reg = /@\d+/;
    needfulData.forEach(function (template) {
        template.ID = uuidMaping[template.ID] ? uuidMaping[template.ID] : -1;
        template.ParentID = uuidMaping[template.ParentID] ? uuidMaping[template.ParentID] : -1;
        template.NextSiblingID = uuidMaping[template.NextSiblingID] ? uuidMaping[template.NextSiblingID] : -1;
        const needToParseCalcBase = template.calcBase && reg.test(template.calcBase);
        if (needToParseCalcBase) {
            template.calcBase = billsUtil.parseCalcBase(template.calcBase, uuidMaping);
        }
    });
}

module.exports = new BillsTemplateDAO();