var UI = require('ui');
var Vector2 = require('vector2');

//Constants
var defaultCurrentSpeed = 5;
var defaultBufferSpeed = 1;

var main = new UI.Card({
    title: 'Speed Check!',
    body: 'Say Good-Bye to speeding tickets. Press Select',
});

main.show();
//console.log("Before Select");
main.on('click', 'select', function(e) {
    //console.log("After Select");
    var selectWindow = new UI.Window({
        fullscreen: true,
    });

    var instructions = new UI.Text({
        position: new Vector2(0, 20),
        size: new Vector2(144, 30),
        font: 'gothic-24-bold',
        text: 'Scroll up or down to set speed limit',
        textAlign: 'center'
    });


    var speedValue = new UI.Text({
        position: new Vector2(50, 100),
        size: new Vector2(100, 100),
        font: 'gothic-24-bold',
        text: defaultCurrentSpeed,
        textAlign: 'center'
    });

    selectWindow.add(instructions);
    selectWindow.add(speedValue);
    selectWindow.show();

    selectWindow.on('click', 'up', function(e) {
        speedValue.text(++defaultCurrentSpeed);
        selectWindow.show();
    });

    selectWindow.on('click', 'down', function(e) {
        //add functionality to prevent negative speed limits
        speedValue.text(--defaultCurrentSpeed);
        selectWindow.show();
    });

    selectWindow.on('click','select',function(e){
        //console.log("Select Test Syntax");
        var bufferWindow = new UI.Window({
            fullscreen : true,
        });
        var instructions_2 = new UI.Text({
          position: new Vector2(30, 15),
          size: new Vector2(100, 100),
          font: 'gothic-24-bold',
          text: 'select your buffer speed',
          textAlign: 'center'
        });

        var bufferSpeed = new UI.Text({
          position: new Vector2(50, 100),
          size: new Vector2(100, 100),
          font: 'gothic-24-bold',
          text: defaultBufferSpeed,
          textAlign: 'center'
        });

        bufferWindow.add(bufferSpeed);
        bufferWindow.add(instructions_2);
        bufferWindow.show();

        bufferWindow.on('click', 'up', function(e) {
            bufferSpeed.text(++defaultBufferSpeed);
            bufferWindow.show();
        });

        bufferWindow.on('click', 'down', function(e) {
            if (defaultBufferSpeed > 0) {
                bufferSpeed.text(--defaultBufferSpeed);
                bufferWindow.show();
            }
        });
        //console.log("result pretest");
        bufferWindow.on('click', 'select', function(e) {
            var resultWindow = new UI.Window({
                fullscreen: true,
            });
            var resultText = new UI.Text({
                position: new Vector2(0, 15),
                size: new Vector2(150, 150),
                font: 'gothic-24-bold',
                text: 'Speedr will warn you when you exceed ' + (defaultBufferSpeed + defaultCurrentSpeed) + ' mph',
                textAlign: 'center'
            });

            resultWindow.add(resultText);
            resultWindow.show();
            var currentLat;
            var currentLong;
            var prevLat;
            var prevLong;
            var locationOptions = {
                enableHighAccuracy: true,
                maximumAge: 10000,
                timeout: 1000
            };
            function updateLocation() {
                navigator.geolocation.getCurrentPosition(locationSuccess, locationError, locationOptions);
            }

            function locationSuccess(pos) {
                currentLat = pos.coords.latitude;
                //console.log(currentLat);
                currentLong = pos.coords.longitude;
                //console.log(currentLong);
            }

            function locationError(err) {
                console.log('location error (' + err.code + '): ' + err.message);
            }

            function distance(lat1, lon1, lat2, lon2) {
                var radlat1 = Math.PI * lat1/180;
                var radlat2 = Math.PI * lat2/180;
                var theta = lon1-lon2;
                var radtheta = Math.PI * theta/180;
                var dist = Math.sin(radlat1) * Math.sin(radlat2) + Math.cos(radlat1) * Math.cos(radlat2) * Math.cos(radtheta);
                dist = Math.acos(dist);
                dist = dist * 180/Math.PI;
                dist = dist * 60 * 1.1515;
                //if (unit=="K") { dist = dist * 1.609344; }
                //if (unit=="N") { dist = dist * 0.8684; }
                //console.log(dist);
                return dist;
            }

            /*updateLocation();
            //var currentTime = get the current time
            prevLat = currentLat;
            prevLong = currentLong;
            //resultWindow.on('click', 'down', function(e){
                //break;
            //});
            for(var i = 0; i < 3; i++){
                speedCheck();
            }
            function speedCheck() {
                updateLocation();
                var dist = distance(currentLat, currentLong, prevLat, prevLong);
                var mph = dist * 3600; // divide by time difference;
                if(mph > (defaultCurrentSpeed + defaultBufferSpeed)) {
                    var vibe = require('ul/vibe');
                    vibe.vibrate('short');
                }
                prevLat = currentLat;
                prevLong = currentLong;
                //console.log("WhileLat" + currentLat);
                //console.log("WhileLong" + currentLong);

            }*/
        });
    });
});