var express = require('express');
var app = express();
var multer = require('multer')
var cors = require('cors');
var bodyParser = require("body-parser");
var https = require('https')
const util = require('util');
const fs = require('fs');

var corsOptions = {
    "origin": "*",
    "methods": "GET,HEAD,PUT,PATCH,POST,DELETE",
    "preflightContinue": false,
    "optionsSuccessStatus": 204
}
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cors(corsOptions));

function callLoadInitializeData(projectid, construction_id, username, sheetname, filename){
    https.get('https://natnats.mobilous.com/loadInitializeData?projectid=23&construction_id=1&username=1&sheetname=dataSheet&filename=ini_データ入力シート.xlsx', (resp) => {
        let data = '';

    // A chunk of data has been received.
        resp.on('data', (chunk) => {
            data += chunk;
        });

        // The whole response has been received. Print out the result.
        resp.on('end', () => {
            if(data !== 'no match'){
        
                resdata = JSON.parse(data);
                console.log(resdata);
            }
            
        });

        }).on("error", (err) => {
        console.log("Error: " + err.message);
        });
}

function callInitFileMover(re) {
    https.get('https://natnats.mobilous.com/iniFileMover', (resp) => {
        let data = '';

    // A chunk of data has been received.
        resp.on('data', (chunk) => {
            data += chunk;
        });

        // The whole response has been received. Print out the result.
        resp.on('end', () => {
            //debug
            data = `{
                "construction_id": 3,
                "file_name": "ini_データ入力シート.xlsx",
                "file_type": "dataSheet" 
            }`
            if(data !== 'no match'){
                resdata = JSON.parse(data);
                console.log(resdata);
            }
            
        });

        }).on("error", (err) => {
        console.log("Error: " + err.message);
        });

}

var storage = multer.diskStorage({
    destination: function(req, file, cb) {
        cb(null, '/var/www/html/FBS')
    },
    filename: function(req, file, cb) {
        cb(null, file.originalname)
    }
})


var upload = multer({ storage: storage }).single('file')

app.post('/upload', function(req, res, next) {

    console.log('email is ' + req.query.email);

    // upload(req, res, function(err) {
    //     if (err instanceof multer.MulterError) {
    //         return res.status(500).json(err)
    //     } else if (err) {
    //         return res.status(500).json(err)
    //     }
    //     else {
    //         var FileName = req.file.filename;
    //         callInitFileMover(res);
    //         res.status(200).send(FileName);
    //     }
    //     //return res.status(200).send(req.file)

    // })

});

const converter = require('json-2-csv');

app.post('/csv', (req, res, next) => {
    const csv = req;
    userData = req.body;

    converter.json2csv(userData, (err, csv) => {
        if (err) {
            throw err;
        }
        writetoFile(csv);
        // print CSV string
        console.log(csv);
    });

    res.send("OK");
});

function writetoFile(csv) {
    fs.writeFile('/var/www/html/appexe/natnats/23/bin/mobileweb2/resources/database/user_record.csv', csv, err => {
        if (err) {
            console.error(err)
            return
        }
    })
}

app.listen(8000, function() {

    console.log('App running on port 8000');

});