'use strict';

/**
 *
 * 清单汇总
 *
 * @author Mai
 * @date
 * @version
 */

const mergeChar = ';';
const Ledger = require('./ledger');

const gclGatherModel = class {

    /**
     * 构造函数
     * 
     * @param {Object} ctx - egg 全局变量 
     */
    constructor(ctx) {
        this.ctx = ctx;
        this._ = ctx.helper._;
        // mainData
        this.billsTree = new Ledger.billsTree(this.ctx, {
            id: 'ledger_id',
            pid: 'ledger_pid',
            order: 'order',
            level: 'level',
            rootId: -1,
            keys: ['id', 'tender_id', 'ledger_id']
        });
        this.pos = new Ledger.pos({
            id: 'id', ledgerId: 'lid', order: 'order'
        });
    }

    /**
     * 根据node新增工程量清单
     * 
     * @param {Object}} node 
     * @returns {Object}
     */
    newGclNode(node) {
        const gcl = {
            id: this.gclList.length + 1,
            b_code: node.b_code,
            name: node.name,
            unit: node.unit,
            unit_price: node.unit_price,
            leafXmjs: [],
        };
        this.gclList.push(gcl);
        return gcl;
    }

    /**
     * 获取node对应的工程量清单
     * 
     * @param {Object} node
     * @returns {Object}  
     */
    getGclNode(node) {
        const helper = this.ctx.helper;
        const gcl = this.gclList.find(function (g) {
            return g.b_code === node.b_code &&
                (g.name || node.name ? g.name === node.name : true) &&
                (g.unit || node.unit ? g.unit === node.unit : true) &&
                helper.checkZero(helper.sub(g.unit_price, node.unit_price));
        });
        if (gcl) {
            return gcl;
        } else {
            return this.newGclNode(node);
        }
    }

    /**
     * 检查 text 是否是Peg
     * e.g. K123+000(true) Kab+123(false) K123.234+234(false) K12+324.234(true)
     *
     * @param text
     * @returns {*}
     * @constructor
     */
    CheckPeg(text) {
        const pegReg = /[a-zA-Z]*[kK][0-9]+[+＋][0-9]{3}([.][0-9]+)?/;
        return pegReg.test(text);
    }

    /**
     * 基于node向上查找桩号节点（特别的，对于路基工程等，桩号节点应该在计量单元中）
     * 
     * @param {Object} node - 清单树节点 
     */
    getPegNode(node) {
        if (node) {
            if (this.CheckPeg(node.name)) {
                return node;
            } else {
                const parent = this.billsTree.getParent(node);
                return parent ? this.getPegNode(parent) : null;
            }
        }
    }

    /**
     * 获取节点的第N层父节点
     *
     * @param node - 节点(检索起点)
     * @param level - 第N层
     * @returns {*}
     */
    getNodeByLevel(node, level) {
        let cur = node;
        while (cur && cur.level > level) {
            cur = this.billsTree.getParent(cur);
        }
        return cur;
    }

    /**
     * 获取 单位工程
     *
     * @param xmj - 计量单元(最底层项目节)
     * @returns {string}
     */
    getDwgc(peg, xmj) {
        if (peg) {
            return peg.name;
        } else {
            const node = this.getNodeByLevel(xmj, 2);
            return node ? node.name : '';
        }
    }

    /**
     * 获取 分部工程
     *
     * @param peg - 桩号节点
     * @param xmj - 计量单元(最底层项目节)
     * @returns {string}
     */
    getFbgc(peg, xmj) {
        if (peg && peg.id !== xmj.id) {
            const node = this.getNodeByLevel(xmj, peg.level + 1);
            return node ? node.name : '';
        } else {
            const node = this.getNodeByLevel(xmj, 3);
            return node ? node.name : '';
        }
    }

    /**
     * 获取 分项工程
     *
     * @param peg - 桩号节点
     * @param xmj - 计量单元(最底层项目节)
     * @returns {string}
     */
    getFxgc (peg, xmj) {
        if (!peg) {
            const node = this.getNodeByLevel(xmj, 4);
            return node ? node.name : '';
        } else if (peg.id === xmj.id) {
            if (xmj.level > 4) {
                let value = '';
                for (let level = 4; level < xmj.level; level++) {
                    const node = this.getNodeByLevel(xmj, level);
                    value = value === '' ? node.name : value + mergeChar + node.name;
                }
                return value;
            } else {
                return '';
            }
        } else {
            if (peg.level + 2 < xmj.level) {
                let value = '';
                for (let level = peg.level + 2; level < xmj.level; level++) {
                    const node = this.getNodeByLevel(xmj, level);
                    value = value === '' ? node.name : value + mergeChar + node.name;
                }
                return value;
            } else {
                return '';
            }
        }
    }

    /**
     * 生成缓存数据（缓存仅为了不用每次都运算分部工程等）
     * 
     * @param {Object}} leafXmj - 清单树节点 
     * @returns {Object} 最底层项目节缓存数据
     */
    newCacheLeafXmj(leafXmj) {
        const peg = this.getPegNode(leafXmj);
        const cacheLX = {
            id: leafXmj.id,
            code: leafXmj.code,
            jldy: leafXmj.name,
            fbgc: this.getFbgc(peg, leafXmj),
            fxgc: this.getFxgc(peg, leafXmj),
            dwgc: this.getDwgc(peg, leafXmj),
            drawing_code: leafXmj.drawing_code,
        };
        this.leafXmjs.push(cacheLX);
        return cacheLX;
    }

    /**
     * 获取缓存数据（有缓存则直接读取，无则生成缓存）
     * 
     * @param {Object} leafXmj - 最底层项目节 
     * @returns {Object} 最底层项目缓存数据
     */
    getCacheLeafXmj(leafXmj) {
        const cacheLX = this.leafXmjs.find(lx => { return lx.id === leafXmj.id; });
        if (!cacheLX) {
            return this.newCacheLeafXmj(leafXmj);
        } else {
            return cacheLX;
        }
    }

    /**
     * 汇总工程量清单数据
     * 
     * @param {Object} node 最底层工程量清单树节点 
     * @param {*} leafXmj node所属的最底层项目节
     */
    loadGatherGclNode(node, leafXmj) {
        const helper = this.ctx.helper;
        const gcl = this.getGclNode(node);
        for (const prop in node) {
            if (prop === 'quantity' || prop === 'total_price' || prop.indexOf('qty') >= 0 || prop.indexOf('tp') >= 0) {
                gcl[prop] = this.ctx.helper.add(gcl[prop], node[prop]);
            }
        }
        const cacheLeafXmj = this.getCacheLeafXmj(leafXmj);
        const posRange = this.pos.getLedgerPos(node.id);

        const loadLeafXmj = function (detail, calcSource) {
            const dx = helper._.assign({}, cacheLeafXmj);
            dx.gcl_id = gcl.id;
            dx.org_gcl_id = node.id;
            if (detail.name !== node.name) {
                dx.bwmx = detail.name;
                dx.mx_id = detail.id;
            }
            if (detail.drawing_code) {
                dx.drawing_code = detail.drawing_code;
            }
            for (const prop in calcSource) {
                if (prop === 'quantity' || prop.indexOf('qty') > 0) dx[prop] = calcSource[prop];
            }
            gcl.leafXmjs.push(dx);
        };

        if (posRange && posRange.length > 0) {
            for (const pr of posRange) {
                loadLeafXmj(pr, pr);
            }
        } else {
            loadLeafXmj(leafXmj, node);
        }
    }

    /**
     * 递归生成工程量清单汇总数据
     * 
     * @param {Array<Object>} nodes 清单子节点
     * @param {Object} leafXmj 最底层项目节 
     */
    recursiveGatherGclData(nodes, leafXmj) {
        for (const node of nodes) {
            if (node.b_code) {
                if (node.children.length > 0) {
                    this.recursiveGatherGclData(node.children, leafXmj);
                } else {
                    this.loadGatherGclNode(node, leafXmj);
                }
            } else if (node.children.length > 0) {
                this.recursiveGatherGclData(node.children, node);
            }
        }
    }

    gatherDealBillsData(deal) {
        if (deal && deal.length > 0) {
            for (const node of deal) {
                node.b_code = node.code;
                const gcl = this.getGclNode(node);
                if (!node.quantity || !node.unit_price) continue;
                gcl.deal_bills_qty = node.quantity;
                gcl.deal_bills_tp = node.total_price;
            }
        }
    }

    convertResultData() {
        this.leafXmjs = [];
        for (const gcl of this.gclList) {
            if (gcl.leafXmjs.length === 0) return;
            for (const lx of gcl.leafXmjs) {
                this.leafXmjs.push(lx);
            }
        }
    }

    /**
     * 汇总
     * 
     * @param {Array<Object>} bills 清单数据 
     * @param {Array<Object>} pos 计量单元数据
     */
    gather(bills, pos, deal) {
        const helper = this.ctx.helper;
        this.billsTree.loadDatas(bills);
        this.pos.loadDatas(pos);

        this.gclList = [];
        this.leafXmjs = [];

        this.recursiveGatherGclData(this.billsTree.children, null);
        this.gatherDealBillsData(deal);
        this.gclList.sort(function (a, b) {
            return helper.compareCode(a.b_code, b.b_code);
        });

        this.convertResultData();
        return [this.gclList, this.leafXmjs];
    }
    gatherObj(bills, pos, deal) {
        const helper = this.ctx.helper;
        this.billsTree = bills;
        this.pos = pos;

        this.gclList = [];
        this.leafXmjs = [];

        this.recursiveGatherGclData(this.billsTree.children, null);
        this.gatherDealBillsData(deal);
        this.gclList.sort(function (a, b) {
            return helper.compareCode(a.b_code, b.b_code);
        });

        this.convertResultData();
        return [this.gclList, this.leafXmjs];
    }
};

module.exports = {
    gclGather: gclGatherModel,
};