'use strict';

/**
 *
 *
 * @author Mai
 * @date 2018/5/7
 * @version
 */

const fs = require('fs');
const path = require('path');
const excel = require('node-xlsx');
const xlsx = require('js-xlsx');
const sendToWormhole = require('stream-wormhole');
const loadExcelType = {
    display: 1,
    actual: 2,
};
const loadType = loadExcelType.display;

module.exports = app => {
    class DealBillsController extends app.BaseController {

        /**
         * 获取标段的签约清单数据
         * @param ctx
         * @return {Promise<void>}
         */
        async getData(ctx) {
            const responseData = {
                err: 0,
                msg: '',
                data: [],
            };
            try {
                responseData.data = await ctx.service.dealBills.getAllDataByCondition({ where: { tender_id: ctx.tender.id } });
            } catch (error) {
                this.log(error);
                responseData.err = 1;
                responseData.msg = error.toString();
            }

            ctx.body = responseData;
        }

        /**
         * 导入Excel数据
         * @param ctx
         * @return {Promise<void>}
         */
        async loadExcel(ctx) {
            let stream;
            try {
                stream = await ctx.getFileStream();
                const create_time = Date.parse(new Date()) / 1000;
                const fileInfo = path.parse(stream.filename);
                const fileName = this.app.config.filePath + '/cache/deal_bills/uploads/' + 'deal_bills' + create_time + fileInfo.ext;
                // 保存文件
                await ctx.helper.saveStreamFile(stream, fileName);
                if (loadType === loadExcelType.display) {
                    const wb = xlsx.readFile(fileName);
                    const name = wb.SheetNames[0];
                    const sheetData = {
                        rows: xlsx.utils.sheet_to_json(wb.Sheets[name], {header: 1}),
                        merge: wb.Sheets[name]["!merges"],
                    };
                    const result = await ctx.service.dealBills.importDataJsXlsx(sheetData, ctx.tender.id);
                    if (!result) {
                        throw '导入数据失败';
                    }
                } else {
                    // 读取文件
                    const sheet = excel.parse(fileName);
                    if (!sheet || sheet.length === 0 || sheet[0] === undefined || sheet[0].data === undefined) {
                        throw 'excel没有对应数据';
                    }
                    const result = await ctx.service.dealBills.importData(sheet[0], ctx.tender.id);
                    if (!result) {
                        throw '导入数据失败';
                    }
                }

                const dealBills = await this.ctx.service.dealBills.getAllDataByCondition({ where: { tender_id: ctx.tender.id } });
                ctx.body = {err: 0, msg: '', data: dealBills};
            } catch (err) {
                this.log(err);
                // 失败需要消耗掉stream 以防卡死
                if (stream) {
                    await sendToWormhole(stream);
                }
                ctx.body = {err: 1, msg: err.toString(), data: null};
            }
        }

        /**
         * 下载模板文件
         * @param ctx
         * @return {Promise<void>}
         */
        async download(ctx) {
            const file = ctx.params.file;
            if (file) {
                try {
                    let fileName;
                    if (file === '签约清单导入格式.xls') {
                        fileName = this.app.baseDir + '/app/public/deal_bills/template.xls';
                        ctx.body = await fs.readFileSync(fileName);
                    } else if (file === '签约清单.xlsx') {
                        const create_time = Date.parse(new Date()) / 1000;
                        fileName = this.app.baseDir + '/app/public/deal_bills/downloads/' + ctx.tender.id + '-' + create_time + '.xlsx';
                        await this.ctx.helper.recursiveMkdirSync(this.app.baseDir + '/app/public/deal_bills/downloads');
                        // todo 导出签约清单Excel
                        const setting = {
                            header: ['清单编号', '名称', '单位', '数量', '单价', '金额'],
                            width: [80, 150, 60, 80, 80, 80],
                            hAlign: ['left', 'left', 'center', 'right', 'right', 'right'],
                        };
                        const dealBills = await ctx.service.dealBills.getAllDataByCondition({ where: { tender_id: ctx.tender.id } });
                        const data = [];
                        for (const db of dealBills) {
                            data.push([db.code, db.name, db.unit, db.quantity, db.unit_price, db.total_price]);
                        }
                        const arraySheetData = this.ctx.helper.simpleXlsxSheetData(setting, data);
                        xlsx.writeFile({
                            SheetNames: ['Sheet1'],
                            Sheets: {
                                'Sheet1': arraySheetData,
                            },
                        }, fileName);
                        ctx.body = await fs.readFileSync(fileName);
                        // 输出文件后删除
                        fs.unlinkSync(fileName);
                    }
                } catch (err) {
                    this.log(err);
                }
            }
        }
    }

    return DealBillsController;
};