/* tel-o-fun provider */

const request = require('request');
const station_attributes = ['data-lat','data-lng','data-id','data-name'];

function getStationsData(lat,lng) {
    let results = [];
    let options = {
        method: 'POST',
        url: 'https://telofunonline.info/en/includes/ajax.php',
        headers:
            {
                'content-type': 'application/x-www-form-urlencoded'
            },
        form:
            {
                action: 'search',
                lng: lng,
                lat: lat
            }
    };
    request(options, function (error, response, body) {
        if (error) throw new Error(error);
        console.log('Incoming stations string: ' + body);
        let start_index = 0;
        let end_index = 0;
        while(true) {
            start_index = body.indexOf('<a',start_index);
            end_index = body.indexOf('</a>',end_index);
            if(start_index == -1 || end_index == -1) {
                break;
            } else {
                let station_str = body.substring(start_index,end_index);
                let attributes = station_attributes.map(function(attr) {
                    let start = station_str.indexOf(attr) + attr.length + 1;
                    let end = start;
                    let end_counter = 0;
                    while(end_counter != 2) {
                        if(station_str.charCodeAt(end) == 39) {
                            end_counter++;
                        }
                        end++;
                    }
                    let value = station_str.substring(start+1,end-1);
                    return value;
                });
                results.push(attributes)
                start_index += 2;
                end_index += 4;
            }
        }
        results.forEach(function(station) {
            let url = 'https://www.tel-o-fun.co.il/DesktopModules/Locations/StationData.ashx?portalId=1&sid=' + station[2];
            request(url, (err, res, body) => {
                if (err) { return console.log(err); }
                let data_start = body.indexOf('<b>');
                let data_end = body.indexOf('</b>');
                let data = body.substring(data_start + 3,data_end)
                let tokens = data.split('&nbsp;');
                let bikes = tokens[1];
                let stands = tokens[tokens.length-1];
                station.push(bikes);
                station.push(stands);
                console.log(station);
                // Station attributes:
                //   offset 0: lat
                //   offset 1: lng
                //   offset 2: id
                //   offset 3: address
                //   offset 4: number of available bikes
                //   offset 5: number of available stands
            });
        });
    });

}



if(process.argv.length < 4){
    console.error('Usage: ' + process.argv[1] +  ' lat lng');
} else {
    process.env["NODE_TLS_REJECT_UNAUTHORIZED"] = 0;
    getStationsData(process.argv[2],process.argv[3])
}