class MapEventHandler {
    constructor(options, dashmap) {
        this.options = options;
        this.dashmap = dashmap;
    }
    
    connect(user_id, host, port) {
        var d = new Date();
        var client_id = "dash-" + user_id + "-" + d.getMonth() + "-" + d.getDate() + "-" + d.getHours() + "-" + d.getMinutes() + "-" + d.getSeconds() + "-" + d.getMilliseconds();
        console.log(client_id);

        this.mqtt = new Paho.MQTT.Client(host, port, client_id);
        var options = {
            // useSSL: true,
            timeout: 3,
            invocationContext: this,
            onSuccess: this.onConnect.bind(this),
        };

        this.mqtt.onMessageArrived = this.onMessage.bind(this);

        console.log('connecting to mqtt server...');
        this.mqtt.connect(options);
    }

    onConnect(icontext) {
        console.log('mqtt connected!');
        var my = icontext.invocationContext;

        if (my.options.track_rider) {
            // subscribe to rider locations
            console.log('subscribing to ' + my.options.channels.rider_location);
            my.mqtt.subscribe(my.options.channels.rider_location);

            // subscribe to rider status
            console.log('subscribing to ' + my.options.channels.rider_status);
            my.mqtt.subscribe(my.options.channels.rider_status);
        }

        if (my.options.track_jo) {
            // subscribe to jo locations
            console.log('subscribing to ' + my.options.channels.jo_location);
            my.mqtt.subscribe(my.options.channels.jo_location);

            // subscribe to jo status
            console.log('subscribing to ' + my.options.channels.jo_status);
            my.mqtt.subscribe(my.options.channels.jo_status);
        }

    }

    onMessage(msg) {
        // console.log(msg);
        console.log('received message');

        var channel = msg.destinationName;
        var chan_split = channel.split('/');
        var payload = msg.payloadString;

        // handle different channels
        switch (chan_split[0]) {
            case "rider":
                this.handleRider(chan_split, payload);
                break;
            case "jo":
                this.handleJobOrder(chan_split, payload);
                break;
        }
    }

    handleRider(chan_split, payload) {
        console.log("rider message");
        switch (chan_split[2]) {
            case "location":
                console.log("got location for rider " + chan_split[1] + " - " + payload);
                var pl_split = payload.split(':');
                console.log(pl_split);

                // check for correct format
                if (pl_split.length != 2)
                    break;

                var lat = parseFloat(pl_split[0]);
                var lng = parseFloat(pl_split[1]);

                // TODO: check if available or not
                this.dashmap.putRiderAvailableMarker(chan_split[1], lat, lng);
                break;
            case "status":
                console.log("got status for rider " + chan_split[1] + " - " + payload);
                switch (payload) {
                    case 'available':
                        this.dashmap.switchRiderStatus(chan_split[1], 'available');
                        break;
                    case 'jo':
                        console.log('jo status');
                        this.dashmap.switchRiderStatus(chan_split[1], 'jo');
                        break;
                    case 'logout':
                        this.dashmap.removeRiderMarker(chan_split[1]);
                        break;
                }
                break;
        }
    }

    handleJobOrder(chan_split, payload) {
        console.log("jo message");
        var id = chan_split[1];
        switch (chan_split[2]) {
            case "location":
				// var my = this;
                console.log("got location for jo " + id + " - " + payload);
                var pl_split = payload.split(':');

                // check for correct format
                if (pl_split.length != 2)
                    break;

                var lat = parseFloat(pl_split[0]);
                var lng = parseFloat(pl_split[1]);

                // move marker
                console.log(lat + ' - ' + lng);

                this.dashmap.putCustomerMarker(id, lat, lng);
                break;
            case "status":
                console.log("got status for jo " + payload);
                switch (payload) {
                    case 'cancel':
                    case 'fulfill':
                    case 'delete':
                        this.dashmap.removeCustomerMarker(id);
                        break;
                }
        }
    }
}