'use strict'
/**
 * Copyright (c) 2018~2019, OBCon Inc.
 * All rights reserved.
 */

/**
 * @file
 * @copyright OBCon Inc. Korea 2018~2019
 * @author gye hyun james kim [pnuskgh@gmail.com]
 */

let iconv = require('iconv-lite');

class Csv {
    constructor() {
        this._characterset = 'utf-8';                       //--- utf-8, euc-kr
        this._filename = null;                              //--- ~.csv
    }

    get characterset() {
        return this._characterset;
    }

    set characterset(newValue) {
        this._characterset = newValue;
    }

    get filename() {
        return this._filename;
    }

    set filename(newValue) {
        this._filename = newValue;
    }

    header(res) {
        if (this._characterset == 'euc-kr') {
            res.setHeader('Content-Type', 'text/csv;characterset=' + this._characterset + '"');
            res.setHeader('content-disposition', 'attachment; filename=' + this._filename);
        } else {
            res.setHeader('Content-Type', 'text/csv;characterset=utf-8"');
            res.setHeader('content-disposition', 'attachment; filename=' + this._filename);
        }
    }

    title(res, header) { 
        let msg = ((typeof(header) == 'string') ? header:header.join(',')) + '\n';

        if (this._characterset == 'euc-kr') {
            res.write(iconv.encode(msg, 'EUC-KR'));
        } else {
            res.write(msg);
        }
    }

    item(res, item) {
        let msg = ((typeof(item) == 'string') ? item:item.join(',')) + '\n';

        if (this._characterset == 'euc-kr') {
            res.write(iconv.encode(msg, 'EUC-KR'));
        } else {
            res.write(msg);
        }
    }

    end(res) {
        res.end();
    }    
}

module.exports = Csv;