'use strict';

/**
 *
 * 清单汇总对比（需使用 decimal.min.js, zh_calc.js, path_tree.js, lodash.js）
 *
 * @author Mai
 * @date 2020/10/28
 * @version
 */

const gclCompareModel = (function () {
    const leafXmjs = [], mergeChar = ';';
    let gclList, gclChapter, otherChapter;
    let ledgerSetting, gsTree;

    function gatherfields(obj, src, fields, prefix = '') {
        if (obj && src) {
            for (const f of fields) {
                obj[prefix + f] = ZhCalc.add(obj[prefix + f], src[f]);
            }
        }
    }
    /**
     * 新建 清单汇总节点
     * @param node - 最底层 工程量清单节点
     * @returns {obj}
     */
    function newGclNode(node) {
        const gcl = {
            b_code: node.b_code,
            name: node.name,
            unit: node.unit,
            unit_price: node.unit_price,
            leafXmjs: [],
        };
        gclList.push(gcl);
        return gcl;
    }

    /**
     * 获取清单汇总节点
     *
     * @param node - 最底层清单节点
     * @returns {*}
     */
    function getGclNode(node) {
        const gcl = 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) &&
                checkZero(ZhCalc.sub(g.unit_price, node.unit_price));
        });
        if (gcl) {
            return gcl
        } else {
            return 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
     */
    function CheckPeg(text) {
        const pegReg = /[a-zA-Z]?[kK][0-9]+[+＋][0-9]{3}([.][0-9]+)?/;
        return pegReg.test(text);
    }

    /**
     * 获取 桩号节点
     * @param node - 检索起始节点
     * @returns {*}
     */
    function getPegNode (node) {
        if (node) {
            if (CheckPeg(node.name)) {
                return node;
            } else {
                const parent = gsTree.getParent(node);
                return parent ? 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 {*}
     */
    function getNodeByLevel(node, level) {
        let cur = node;
        while (cur && cur.level > level) {
            cur = gsTree.getParent(cur);
        }
        return cur;
    }

    /**
     * 获取 单位工程
     *
     * @param xmj - 计量单元(最底层项目节)
     * @returns {string}
     */
    function getDwgc(peg, xmj) {
        if (peg) {
            return peg.name;
        } else {
            const node = 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}
     */
    function getFbgc(peg, xmj) {
        if (peg && peg.id !== xmj.id) {
            const node = getNodeByLevel(xmj, peg.level + 1);
            return node ? node.name : '';
        } else {
            const node = 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}
     */
    function getFxgc(peg, xmj) {
        if (!peg) {
            const node = 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 = 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 = getNodeByLevel(xmj, level);
                    value = value === '' ? node.name : value + mergeChar + node.name;
                }
                return value;
            } else {
                return '';
            }
        }
    }

    /**
     * 新建 最底层项目节 缓存数据
     * @param leafXmj
     * @returns {{id, code: *|string[], jldy, fbgc: string, fxgc: string, dwgc: string, bwmx: string, drawing_code: string}}
     */
    function newCacheLeafXmj(leafXmj) {
        const peg = getPegNode(leafXmj);
        const cacheLX = {
            id: leafXmj.id,
            code: leafXmj.code,
            jldy: leafXmj.name,
            fbgc: getFbgc(peg, leafXmj),
            fxgc: getFxgc(peg, leafXmj),
            dwgc: getDwgc(peg, leafXmj),
            drawing_code: leafXmj.drawing_code,
        };
        leafXmjs.push(cacheLX);
        return cacheLX;
    }

    /**
     * 获取缓存的最底层项目节数据
     *
     * @param leafXmj - 最底层项目节
     * @returns {*}
     */
    function getCacheLeafXmj(leafXmj) {
        const cacheLX = leafXmjs.find(function (lx) {
            return lx.id === leafXmj.id;
        });
        if (!cacheLX) {
            return newCacheLeafXmj(leafXmj);
        } else {
            return cacheLX;
        }
    }

    /**
     * 汇总节点
     * @param node - 最底层 工程量清单 节点
     * @param leafXmj - 所属 最底层 项目节
     */
    function loadGatherGclNode(node, leafXmj, gsPos) {
        const gcl = getGclNode(node);
        gatherfields(gcl, node, ledgerSetting.billsFields, ledgerSetting.prefix);
        const cacheLeafXmj = getCacheLeafXmj(leafXmj);
        const posRange = gsPos.getLedgerPos(node.id);
        const detail = posRange && posRange.length > 0 ? posRange : [node];
        for (const d of detail) {
            const dx = _.assign({}, cacheLeafXmj);
            gatherfields(dx, d, ledgerSetting.posFields, ledgerSetting.prefix);
            dx.gcl_id = node.id;
            if (d.name !== node.name) {
                dx.bwmx = d.name;
                dx.mx_id = d.id;
            }
            if (d.drawing_code) {
                dx.drawing_code = d.drawing_code;
            }
            gcl.leafXmjs.push(dx);
        }
    }

    /**
     * （递归）汇总树节点
     * @param nodes - 汇总节点列表
     * @param leafXmj - 汇总节点所属的底层项目节
     */
    function recursiveGatherGclData(nodes, leafXmj, gsPos) {
        for (const node of nodes) {
            if (node.b_code) {
                if (node.children.length > 0) {
                    recursiveGatherGclData(node.children, leafXmj, gsPos);
                } else {
                    loadGatherGclNode(node, leafXmj, gsPos);
                }
            } else if (node.children.length > 0) {
                recursiveGatherGclData(node.children, node, gsPos);
            }
        }
    }

    function _getCalcChapter(chapter) {
        const gclChapter = [], otherChapter = [];
        let serialNo = 1;
        for (const c of chapter) {
            const cc = { code: c.code, name: c.name, cType: 1 };
            cc.serialNo = serialNo++;
            cc.filter = '^[^0-9]*' + c.code.substr(0, c.code.length - 2) + '[0-9]{2}-';
            gclChapter.push(cc);
        }
        gclChapter.push({ name: '未计入章节清单合计', cType: 21, serialNo: serialNo++, });
        otherChapter.push({ name: '清单小计(A)', cType: 11, serialNo: serialNo++ });
        otherChapter.push({ name: '非清单项费用(B)', cType: 31, serialNo: serialNo++ });
        otherChapter.push({ name: '合计(C=A+B)', cType: 41, serialNo: serialNo });
        return [gclChapter, otherChapter];
    }

    function _gatherChapterFields(chapter, data, fields) {
        for (const f of fields) {
            chapter[f] = ZhCalc.add(chapter[f], data[f]);
        }
    }

    function _getGclChapter(chapter, data) {
        for (const c of chapter) {
            if (c.filter) {
                const reg = new RegExp(c.filter);
                if (reg.test(data.b_code)) {
                    return c;
                }
            } else {
                return c;
            }
        }
    }

    function _gatherChapter() {
        for (const d of gsTree.datas) {
            if (d.children && d.children.length > 0) continue;

            for (const c of otherChapter) {
                if (c.cType === 41) {
                    gatherfields(c, d, ledgerSetting.chapterFields, ledgerSetting.prefix);
                } else if (c.cType === 31 && (!d.b_code || d.b_code === '')) {
                    gatherfields(c, d, ledgerSetting.chapterFields, ledgerSetting.prefix);
                } else if (c.cType === 11 && (d.b_code)) {
                    gatherfields(c, d, ledgerSetting.chapterFields, ledgerSetting.prefix);
                }
            }
            if (d.b_code) {
                const c = _getGclChapter(gclChapter, d);
                gatherfields(c, d, ledgerSetting.chapterFields, ledgerSetting.prefix);
            }
        }
    }

    function init (gclData, chapter) {
        gclList = gclData;
        [gclChapter, otherChapter] = _getCalcChapter(chapter);
    }

    /**
     *
     * @param bills - 项目节+清单数据
     * @param pos - 计量单元数据
     * @param setting 配置
     *  e.g.
     *  {
     *      tree: {
     *          id: 'ledger_id',
     *          pid: 'ledger_pid',
     *          order: 'order',
     *          level: 'level',
     *          rootId: -1,
     *          keys: ['id', 'tender_id', 'ledger_id'],
     *          stageId: 'id',
     *      },
     *      pos: { id: 'id', ledgerId: 'lid', },
     *      billsFields: ['quantity', 'total_price', 'deal_qty', 'deal_tp'],
     *      posFields: ['quantity'],
     *      chapterFields: [new_total_price],
     *      prefix: 'org' // 'new'
     *  }
     */
    function gatherLedgerData(bills, pos, setting) {
        ledgerSetting = setting;
        try {
            //if (leafXmjs.length > 0) leafXmjs.length = 0;
            gsTree = createNewPathTree('ledger', setting.tree);
            gsTree.loadDatas(bills);
            const gsPos = new PosData(setting.pos);
            gsPos.loadDatas(pos);
            recursiveGatherGclData(gsTree.children, null, gsPos);
            _gatherChapter();
        } catch(err) {
            console.log(err);
        }
        ledgerSetting = null;
    }

    /**
     *
     * @param data {Array} - 签约清单数据
     * @returns <void>
     */
    function gatherDealBills(data) {
        if (data instanceof Array && data.length > 0) {
            for (const node of data) {
                node.b_code = node.code;
                const gcl = getGclNode(node);
                if (!d.quantity || !d.unit_price) continue;
                gcl.deal_bills_qty = node.quantity || 0;
                gcl.deal_bills_tp = node.total_price || 0;

                for (const c of otherChapter) {
                    if (c.cType === 41 || c.cType === 11) {
                        c.deal_bills_tp = ZhCalc.add(c.deal_bills_tp, d.total_price);
                    }
                }
                const c = _getGclChapter(gclChapter, d);
                c.deal_bills_tp = ZhCalc.add(c.deal_bills_tp, d.total_price);
            }
        }
    }

    /**
     * 检查汇总完的工程量清单中，同编号 & 不同名称/单位/单价 的清单并标记
     */
    function checkDiffer() {
        for (const gcl of gclList) {
            gcl.differ = false;
        }
        for (const [i, gcl] of gclList.entries()) {
            if (i === gclList.length - 1) continue;
            const next = gclList[i+1];
            if (gcl.b_code === next.b_code) {
                if (gcl.name !== next.name || gcl.unit !== next.unit || !checkZero(gcl.unit_price - next.unit_price)) {
                    gcl.differ = true;
                    next.differ = true;
                }
            }
        }
    }

    function chapterData () {
        return gclChapter.concat(otherChapter);
    }

    return {
        init,
        gatherLedgerData, gatherDealBills, checkDiffer,
        chapterData
    };
})();