exports.id = 'timesetter';
exports.title = 'Timesetter';
exports.group = 'Worksys';
exports.color = '#656D78';
exports.input = true;
exports.output = 1;
exports.author = 'Rastislav Kovac';
exports.icon = 'code';
exports.version = '1.0.0';
exports.readme = `
    This component can be installed just on controllers without direct internet access!
    'project_id' variable needs to be set for every project!!

    Timesetter sends requests once a day to service-prod01.worksys.io to get 
    actual date and time. It sets unipi's system timedate
`;

//! SET project_id 
const project_id = 29;
const { exec } = require('child_process');


exports.install = function(instance) {

    instance.on('data', function(flowdata) {

        RESTBuilder.make(function(builder) {

            if(!builder) return;

            builder.method('GET');
            //FLOW.OMS_edge_fw_version
            builder.url(`http://192.168.252.2:8004/gettime?projects_id=${project_id}`);

            builder.callback(function(err, response, output) {

                if (err) {
                    console.log(err);
                    return;
                }

                instance.send(0, "RESTBuilder timedatectl response");
                const res = output.response;

                try {

                    const obj = JSON.parse(res);
                    let d = new Date(obj.date);

                    const now = new Date();

                    //offset in minutes - convertUTCDateToLocalDate
                    let diffInMinutes = now.getTimezoneOffset();
                    //d.setMinutes( d.getMinutes() + diffInMinutes );

                    //let converted = convertUTCDateToLocalDate(d);

                    console.log("---->TimezoneOffset", diffInMinutes);

                    if(d instanceof Date)
                    {
                        console.log("current js date:", d, d.getHours());

                        let year = d.getFullYear();
                        let month = addZeroBefore(d.getMonth() + 1);
                        let day = addZeroBefore(d.getDate());

                        //-2 hodiny!!!!
                        let hours = addZeroBefore( d.getHours() );
                        let minutes = addZeroBefore(d.getMinutes() );
                        let seconds = addZeroBefore(d.getSeconds());

                        let timestamp = `${year}${month}${day} ${hours}:${minutes}:${seconds}`;
                        let dstr = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;


                        //TODO - poslat notifikaciu a nastav hw cas
                        //timedatectl set-timezone "Europe/Bratislava"
                        //hwclock --set --date="2021-08-24 15:02:00" --localtime

                        //https://www.tecmint.com/set-time-timezone-and-synchronize-time-using-timedatectl-command/


                        //timedatectl set-time "2022-04-27 09:13:00"
                        {

                        let year = d.getUTCFullYear();
                        let month = addZeroBefore(d.getUTCMonth() + 1);
                        let day = addZeroBefore(d.getUTCDate());

                        let hours = addZeroBefore( d.getUTCHours() );
                        let minutes = addZeroBefore(d.getUTCMinutes() );
                        let seconds = addZeroBefore(d.getUTCSeconds());

                        let UTCstr = `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;

                            exec(`sudo timedatectl set-time "${UTCstr}"`, (err, stdout, stderr) => {
                                if (err || stderr) {
                                  console.error(err);
                                  console.log(stderr);
                                  console.log(UTCstr);


                                }
                                else
                                {
                                  console.log(`UTC: timedatectl set-time "${UTCstr}"`);
                                }

                            });
                        }
                    }
                } catch(e) {
                console.log(e)
                }
            })
        })
    })
   
    function addZeroBefore(n) {
        return (n < 10 ? '0' : '') + n;
    }

};