/**
 * Created by Tony on 2017/3/13.
 */

let fsUtil = require("../../public/fsUtil");

const rpt_pdf_util = require("../output/rpt_pdf_util");
const fs = require('fs') ;

//统一回调函数
let callback = function(req, res, err, data){
    if(err){
        res.json({success: false, error: err});
    }
    else{
        //res.send({success: true, data: data});
        res.json({success:true, data: data});
    }
};

module.exports = {

    restfulTestResponse: function (req, res) {
        console.log('you are calling restfulTestResponse.');
        callback(req, res, null, 'good!');
    },

    restfulTestResponsePost: function (req, res) {
        console.log('you are calling restfulTestResponse by POST way.');
        callback(req, res, null, 'good!');
    },

    createExcelFilesInOneBookEx: function (req, res) {
        //采用了优化策略
        let params = JSON.parse(req.body.params),
            rptPageRstArray = params.rptPageRstArray,
            uuid = params.uuid
        ;

        // if (rpt_ids && rpt_ids.length > 0) {
        //     getMultiRptsCommon(user_id, prj_id, rpt_ids, pageSize, orientation, customizeCfg, dftOption, JV.OUTPUT_TYPE_NORMAL, function (err, rptPageRstArray) {
        //         if(err){
        //             console.log('导出Excel错误（生成数据过程错误）, userId: ' + user_id + ', prjId' + prj_id);
        //             callback(req, res, '数据有误', null);
        //         } else {
        //             if ((rpt_bill_tpl_ids && rpt_bill_tpl_ids.length > 0) || (rpt_glj_tpl_ids && rpt_glj_tpl_ids.length > 0)) {
        //                 getSummaryComboPages(user_id, prjIds, rpt_bill_tpl_ids, rpt_glj_tpl_ids, pageSize, orientation, customizeCfg, option, JV.OUTPUT_TYPE_NORMAL, function (err, rptSumPageRstArray) {
        //                     rpt_xl_util.exportExcelInOneBook(rptPageRstArray.concat(rptSumPageRstArray), pageSize, rptName, function(uuidName){
        //                         let fileRst = {uuid: uuidName, reportName: rptName};
        //                         callback(req, res, err, fileRst);
        //                     });
        //                 });
        //             } else {
        //                 rpt_xl_util.exportExcelInOneBook(rptPageRstArray, pageSize, rptName, function(uuidName){
        //                     let fileRst = {uuid: uuidName, reportName: rptName};
        //                     callback(req, res, err, fileRst);
        //                 });
        //             }
        //         }
        //     });
        // }
    },

    createExcelFilesEx: function (req, res) {
        let params = JSON.parse(req.body.params),
            pageSize = params.pageSize,
            isOneSheet = params.isOneSheet,
            rptPageRstArray = params.rptPageRstArray
        ;
        // if (rpt_ids && rpt_ids.length > 0) {
        //     getMultiRptsCommon(user_id, prj_id, rpt_ids, pageSize, orientation, customizeCfg, dftOption, JV.OUTPUT_TYPE_NORMAL, function (err, rptPageRstArray) {
        //         if (err) {
        //             console.log('导出Excel错误（生成数据过程错误）, userId: ' + user_id + ', prjId' + prj_id);
        //             callback(req, res, '数据生成错误', null);
        //         } else {
        //             if ((rpt_bill_tpl_ids && rpt_bill_tpl_ids.length > 0) || (rpt_glj_tpl_ids && rpt_glj_tpl_ids.length > 0)) {
        //                 getSummaryComboPages(user_id, prjIds, rpt_bill_tpl_ids, rpt_glj_tpl_ids, pageSize, orientation, customizeCfg, option, JV.OUTPUT_TYPE_NORMAL, function (err, rptSumPageRstArray) {
        //                     let parallelFunctions = [];
        //                     pri_Add_Parallel_Functions(parallelFunctions, rptPageRstArray, rpt_names, err);
        //                     pri_Add_Parallel_Functions(parallelFunctions, rptSumPageRstArray, sum_rpt_names, err);
        //                     pri_Run_Parallel_Functions(parallelFunctions);
        //                 });
        //             } else {
        //                 let parallelFunctions = [];
        //                 pri_Add_Parallel_Functions(parallelFunctions, rptPageRstArray, rpt_names, err);
        //                 pri_Run_Parallel_Functions(parallelFunctions);
        //             }
        //         }
        //     });
        // } else if ((rpt_bill_tpl_ids && rpt_bill_tpl_ids.length > 0) || (rpt_glj_tpl_ids && rpt_glj_tpl_ids.length > 0)) {
        //     getSummaryComboPages(user_id, prjIds, rpt_bill_tpl_ids, rpt_glj_tpl_ids, pageSize, orientation, customizeCfg, option, JV.OUTPUT_TYPE_NORMAL, function (err, rptSumPageRstArray) {
        //         let parallelFunctions = [];
        //         pri_Add_Parallel_Functions(parallelFunctions, rptSumPageRstArray, sum_rpt_names, err);
        //         pri_Run_Parallel_Functions(parallelFunctions);
        //     });
        // }
    },

    createPdfFilesEx: function (req, res) {
        let params = JSON.parse(req.body.params),
            pageSize = params.pageSize,
            rptPageRstArray = params.rptPageRstArray,
            uuidArray = params.uuids
        ;
        // console.log('start!');
        let msg = 'sent the export request!';
        let err = null;
        if (rptPageRstArray instanceof Array && rptPageRstArray.length > 0) {
            for (let rIdx = 0; rIdx < rptPageRstArray.length; rIdx++) {
                try {
                    rpt_pdf_util.export_pdf_file(rptPageRstArray[rIdx], pageSize, uuidArray[rIdx], null); // 创建线程来实现build PDF，但无call back
                } catch (ex) {
                    if (err) {
                        err = err + 'Has error on: ' + rIdx + ' ';
                    } else {
                        err = 'Has error on: ' + rIdx + ' ';
                    }
                }
            }
        }
        callback(req, res, err, msg);
    },

    getFileByUUID: function (req, res) {
        let uuid = req.params.uuid,
            rptName = req.params.rptName,
            suffix = "." + req.params.suffix
        ;
        // let user_id = req.session.sessionUser.id; //未来要校验user id
        try {
            res.setHeader('Content-Type', 'application/vnd.openxmlformats');
            let rptNameURI = encodeURI(rptName);
            res.setHeader("Content-Disposition", "attachment; filename=\"" + rptNameURI + suffix + "\"; filename*=utf-8''" + rptNameURI + suffix );
            let filestream = fs.createReadStream(__dirname.slice(0, __dirname.length - 28) + '/tmp/' + uuid + suffix);
            filestream.on('data', function(chunk) {
                res.write(chunk);
            });
            filestream.on('end', function() {
                res.end();
            });
        } catch (e) {
            console.log(e);
        }
    },
};