//https://maps.google.co.nz/maps/myplaces?ll=-38.75087,174.607258&spn=0.052479,0.154324&ctz=-780&t=h&z=13&layer=c&cbll=-38.750878,174.607314&panoid=N3qt_joqFI-93LKlaJBqBQ&cbp=11,198.35,,0,2.89
//https://maps.google.co.nz/?ll=-37.793237,175.303775&spn=0.001833,0.002411&t=h&z=19&layer=c&cbll=-37.793237,175.303775&panoid=qCIp44Wk4np0MUIEw_wjEA&cbp=12,98.51,,0,0
var fenway = new google.maps.LatLng(-37.793237, 175.303775);
var botswana = new google.maps.LatLng(-20.472393999999998, 24.515585999999995);
var NowyJork = new google.maps.LatLng(42.435272, -73.789272);
var sandy = new google.maps.LatLng(40.554113, -74.110851);
var sanFran = new google.maps.LatLng(37.775679, -122.425017);
var HMSOcelot = new google.maps.LatLng(51.395492,0.526726);

var geocoo = new google.maps.Geocoder();


$.urlParam = function(name){
    var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(window.location.href);
    if (results==null){
       return null;
    }
    else{
       return results[1] || 0;
    }
}

var startLocation;
var steps;

places = { hamilton: fenway,
          botswana: botswana,
          newyork: NowyJork,
          sandy: sandy,
          sanFran: sanFran,
          submarine: HMSOcelot
 }

var place = $.urlParam('place');



if(places[place]){
  startLocation = places[place];
  coolParty();
}
else if (!!place)
{
  geocoo.geocode({address:decodeURIComponent(place)}, function(data, status){
    console.log(data);
    if(data[0])
      startLocation = data[0].geometry.location;
    else
      startLocation = fenway;
    coolParty();
  });
}
else{ startLocation = fenway 
  coolParty();
  }


var selectedLink;
var timeoutHandle;

var panorama;
var dataService;

var SVPaths = [];

function coolParty(){

var map = new google.maps.Map(
  document.getElementById('map-canvas'));
var panoramaOptions = {
  position: startLocation,
  pov: {
    heading: 90,
    pitch: 10,
    zoom: 1

  },
  linksControl:false,
  panControl:false,
  disableDefaultUI: true
};

 dataService = new google.maps.StreetViewService();
 panorama = new google.maps.StreetViewPanorama(document.getElementById('pano'), panoramaOptions);
map.setStreetView(panorama);



google.maps.event.addListener(panorama, "pov_changed", function() {
  SyncThreeCamera(panorama.getPov().heading, panorama.getPov().pitch); //moved back to kinect
});

google.maps.event.addListener(panorama, "links_changed", function() {
  console.log("nuking spheres and creating paths");
  nukeSpheres();
  createPaths();

});
google.maps.event.addListener(panorama, "zoom_changed", function(){
  camera = cameraFromGoogleZoom(panorama.getZoom());
  SyncThreeCamera(panorama.getPov().heading, panorama.getPov().pitch)
});
}
/*
function LoadLinks( depth ) {
  var links = panorama.getLinks();
  for ( var i = 0; i < links.length; ++i ) {

    ( function( panoLink ) {
      dataService.getPanoramaById( panoLink.pano, function( svData, svStatus ) {
        if ( svStatus == google.maps.StreetViewStatus.OK ) {
          var distance = google.maps.geometry.spherical.computeDistanceBetween( panorama.getPosition(), svData.location.latLng );
          var heading = panoLink.heading;
        } else console.log( svData );

      } );
    } )( links[ i ] )

  }
}*/

var skipSteps = 2;



function selecto(newIndex) {
  var index = newIndex - 1;
  var pathIndex = pickLink(panorama.getLinks());

  //document.getElementById("kinectgripthing").innerHTML = "path: " + newIndex;

  if(index >= SVPaths[pathIndex].length)
    index = SVPaths[pathIndex].length - 1;
  if (index >= 0 && SVPaths[pathIndex].length > index) {
    selectSphere(SVPaths[pathIndex][index]);
    return SVPaths[pathIndex][index];
  } else
    deselectSphere();
}

function selectSphere(link) {
  if (link !== selectedLink) {
    deselectSphere();
    selectedLink = link;
    if (selectedLink.sphere) {
      selectedLink.sphere.scale = new THREE.Vector3(2, 2, 2);
      selectoMore(selectedLink.sphere);
    }
  }
}

function deselectSphere() {
  if (selectedLink && selectedLink.sphere){
    selectedLink.sphere.scale = new THREE.Vector3(1, 1, 1);
    if (selectedLink.sphere.anim)
      userUnselectSphere(selectedLink.sphere);
  }

  selectedLink = null;
  if (timeoutHandle !== null){
    window.clearTimeout(timeoutHandle);
    console.log("CLEARED TIMER")
  }
}

var selectTime = 700;
function selectoMore(sphere) {

  timeoutHandle = window.setTimeout(function() {
    userSelectSphere(sphere);

/*
    //separate stage 1
    sphere.startTime = performance.now();
    var speed = sphere.distance / selectTime; 
    //alert("heading equals " + sphere.heading + " and x equals " + sphere.position.x + " and distance equals " + sphere.distance );
    //alert("all up is " + Math.sin(sphere.heading) * (sphere.position.x / sphere.distance));
    var vec = new THREE.Vector3(Math.sin(sphere.heading) * (sphere.position.x / sphere.distance) , 0 , Math.cos(sphere.heading) * (sphere.position.z / sphere.distance) );
    //alert("Raw vec is");
    //alert(JSON.stringify(vec));
    vec.normalize();
    vec.multiplyScalar(speed);
    //alert("scaled vec is");
    //alert(JSON.stringify(vec));
    sphere.vec = vec;
*/
    /*
  
    document.getElementById("kinectgripthing").innerHTML= "sphere " + sphere.id + ":<br> " + JSON.stringify(vec) + "<br>";
    spheros.push(sphere);//begins animation
*/

  }, selectTime);
    console.log("SETTIMER");
}


function userSelectSphere(sphere){
  //alert(JSON.stringify(getHipCameraPoint()));
  sphere.anim = new Ease(sphere.startPos,getHipCameraPoint(), 500);
}
function userUnselectSphere(sphere){
  var timeo = Math.min(500, sphere.anim.time)
  sphere.anim = new Ease(sphere.position, sphere.startPos, timeo);
}


function jumpLoop(startPano) {

  //console.log("entered jumpLoop with " + steps + " steps")
  steps--;
  getLinks(startPano, jumpLoopFinish);
}

function getLinks(startPano, finalMethod) {
  dataService.getPanoramaById(startPano, function(StreetViewPanoramaData, StreetViewStatus) {

    if (StreetViewStatus == "OK") pickHop(StreetViewPanoramaData.links, finalMethod);
    else {
      console.log("StreetViewStatus was " + StreetViewStatus + " so I gave up")
    };
  });
}

function jumpLoopFinish(responsePano) {
  if (steps <= 0) { //break from loop 
    //panorama.setPano(responsePano);
    dataService.getPanoramaById(responsePano.pano, function(svData, svStatus) {
      if (svStatus == google.maps.StreetViewStatus.OK) {
        var distance = google.maps.geometry.spherical.computeDistanceBetween(panorama.getPosition(), svData.location.latLng);
        console.log("jumping to " + responsePano.pano);
        var heading = google.maps.geometry.spherical.computeHeading(panorama.getPosition(), svData.location.latLng);
        //createPanoSphere( heading, distance, responsePano );
        panorama.setPano(responsePano.pano);
      }
    });
    skipSteps++;
    return;
  }
  console.log("steps = " + steps + " and going another round now from " + responsePano);
  jumpLoop(responsePano.pano);
}

/**
 *links, the collection of google streetview links
 *finalMethod, method to pass result on to
 **/

function pickLink(links) { //based off the current pano's heading return next forward jump
  //console.log("Starting jump from " + startPano);
  var setPano = null;
  var povHeading = panorama.getPov().heading;
  var minDiff = 360;
  var theIndex;

  //console.log("Starting picklink panorama pano is " + startPano);//+ " and startPano is " + startPano
  for (var k = 0; k < links.length; k++) {

    var linkBearing = (links[k].heading + 360) % 360;
    var povHead = (povHeading + 360) % 360;

    var diff = Math.abs(linkBearing - povHead);
    //console.log("diff is " + diff + " at " + dummyLinks[k].pano);
    if (diff > 180) {
      diff = 360 - diff;
    }
    if (minDiff > diff) {
      minDiff = diff;
      setPano = links[k];
      theIndex = k;
    }
    // console.log(links[k].description + " " + k + ": " + linkBearing + " minus " + povHead + " = " + (linkBearing - povHead) + ", mindiff is " + minDiff);

  }
  //console.log("Picked " + setPano + '\n');
  //finalMethod( theIndex );
  //console.log("k is " +k);
  //console.log(theIndex);
  return theIndex;
}

function pickHop(links) { //based off the current pano's heading return next forward jump
  var setPano = null;
  var povHeading = panorama.getPov().heading;
  var minDiff = 360;

  for (var k = 0; k < links.length; k++) {

    var linkBearing = (links[k].heading + 360) % 360;
    var povHead = (povHeading + 360) % 360;

    var diff = Math.abs(linkBearing - povHead);
    //console.log("diff is " + diff + " at " + dummyLinks[k].pano);
    if (diff > 180) {
      diff = 360 - diff;
    }
    if (minDiff > diff) {
      minDiff = diff;
      setPano = links[k];
    }

  }

  return setPano;
}

function createPaths() {
  console.log("Recomputing Paths");
  var newPaths = panorama.getLinks();
  SVPaths = [];

  for (var i = 0; i < newPaths.length; ++i) {
    SVPaths[i] = [newPaths[i]];
    extendPath(SVPaths[i], 10);
  }
  console.log(SVPaths);
}

function extendPath(path, steps) {
  var curLink = path[path.length - 1];

  dataService.getPanoramaById(curLink.pano, function(svData, svStatus) {

    if (svStatus == google.maps.StreetViewStatus.OK) {

      var distance = google.maps.geometry.spherical.computeDistanceBetween(panorama.getPosition(), svData.location.latLng);
      var heading = google.maps.geometry.spherical.computeHeading(panorama.getPosition(), svData.location.latLng);

      createPanoSphere(heading, distance, curLink, svData.tiles.centerHeading);
      curLink.distance = distance;
      curLink.heading = heading;
    } else
      alert("Ohhh myyy goooooooooooood");


    if (svStatus == "OK") pickExtendLink(curLink.heading, svData.links, function(nextLink) {

      path.push(nextLink);

      if (steps > 1)
        extendPath(path, steps - 1);
    });
    else
      console.log("StreetViewStatus was " + svStatus + " so I gave up");

  });
}

function pickExtendLink(heading, links, finalMethod) { //based off the current pano's heading return next forward jump
  //console.log("Starting jump from " + startPano);
  var setPano = null;
  var povHeading = heading;
  var minDiff = 360;

  //console.log("Starting picklink panorama pano is " + startPano);//+ " and startPano is " + startPano
  for (var k = 0; k < links.length; k++) {

    var linkBearing = (links[k].heading + 360) % 360;
    var povHead = (povHeading + 360) % 360;

    var diff = Math.abs(linkBearing - povHead);
    //console.log("diff is " + diff + " at " + dummyLinks[k].pano);
    if (diff > 180) {
      diff = 360 - diff;
    }
    if (minDiff > diff) {
      minDiff = diff;
      setPano = links[k];
    }
    // console.log(links[k].description + " " + k + ": " + linkBearing + " minus " + povHead + " = " + (linkBearing - povHead) + ", mindiff is " + minDiff);

  }
  //console.log("Picked " + setPano + '\n');
  finalMethod(setPano);
  return setPano;
}