rest_client.js

// var req = require('request-promise');
var utils = require('./utils.js');
var request = require('sync-request');
var rq = require('request');

var querystring = require('querystring');

const fetch = require("node-fetch");


exports.TERM_ICO_YEAR = 5;
exports.TERM_PLACE = 6

exports.findPolygonsGet = function (data, term) {
    var req_arcgis_url = "";
    if (term == this.TERM_ICO_YEAR) {
        req_arcgis_url = utils.buildArcGisUrlIcoYear(data);
    } else if (term == this.TERM_PLACE) {
        req_arcgis_url = utils.buildArcGisUrlPlace(data);
    }
    var body;
    var response = request('GET', req_arcgis_url);
    try {
        body = JSON.parse(response.getBody())
    } catch (error) {
        console.log("VUPOP: Not able to parse response, error occurred.");
    }
    if (!body) {
        return [];
    }
    return body;
}

exports.findPolygonsPost = function (data, year) {
    var ticker = 0, max_tick = 0000;
    var res_body;

    var form = {
        geometry: JSON.stringify(data.geometry),
        geometryType: 'esriGeometryPolygon',
        inSR: 'geojson:0,1,3,4,5,6,7,8,9,10,12,24,27,30',
        outFields: '*',
        f: 'geojson'
    };

    var formData = querystring.stringify(form);
    var contentLength = formData.length;

    // rq({
    //     headers: {
    //       'Content-Length': contentLength,
    //       'Content-Type': 'application/x-www-form-urlencoded'
    //     },
    //     uri: 'https://portal.vupop.sk/arcgis/rest/services/LPIS/Kulturne_diely/MapServer/0/query',
    //     body: formData,
    //     method: 'POST'
    //   }, function (err, res, body) {
    //     res_body = body;
    //     console.log(res_body);
    // });
    // while(!res_body && ticker < max_tick){
    //     ticker += 1;
    // };
    // var res = request('POST', 'https://portal.vupop.sk/arcgis/rest/services/LPIS/Kulturne_diely/MapServer/0/query', {
    //     headers:{
    //         'Content-type': 'application/x-www-form-urlencoded',
    //         'Content-length': contentLength,
    //         'Accept': 'application/json, text/javascript, */*; q=0.01',
    //         'Host': 'portal.vupop.sk',
    //         'Accept-Encoding': 'gzip, deflate, br'
    //     },
    //     body:formData
    // });
    // try {
    //     body = JSON.parse(res_body);
    // } catch (error) {
    //     console.log("VUPOP: Not able to parse response, error occurred.");
    // }
    // if (!body) {
    //     return [];
    // }
    return new Promise(function (resolve, reject) {
        rq({
            headers: {
                'Content-Length': contentLength,
                'Content-Type': 'application/x-www-form-urlencoded'
            },
            uri: `https://portal.vupop.sk/arcgis/rest/services/LPIS/Historicke_vrstvy_${year}/MapServer/0/query`,
            body: formData,
            method: 'POST'
        }, function (err, res, body) {
            resolve(body);
        });
    });;
}