//Tile Handling
function getTileCode(a, b) {
  //converts tile x,y into keyhole string
  var c = Math.pow(2, b);
  var d = a.x;
  var e = a.y;
  var f = 't';
  for (var g = 0; g < b; g++) {
    c = c / 2;
    if (e < c) {
      if (d < c) {
        f += 'q';
      } else {
        f += 'r';
        d -= c;
      }
    } else {
      if (d < c) {
        f += 't';
        e -= c;
      } else {
        f += 's';
        d -= c;
        e -= c;
      }
    }
  }
  return f;
}

//Tile Handling
function isOutsideTileRange(coord, zoom) {
  var tileRange = 1 << zoom;
  if (coord.x < 0 || coord.x >= tileRange) return true;
  if (coord.y < 0 || coord.y >= tileRange) return true;
  return false;
}

//Transparent markers placed on top of each city, town, castle, & ruin
function markLocation(map, key, locationOptions) {
  //Sample input-> They_Lay_With_Lions: {lat:23.4027, lng:-126.2548, title:"23: Inn (They Lay with Lions)", url:"https://awoiaf.westeros.org/index.php/A_Storm_of_Swords-Chapter_1"},
  if (
    typeof locationOptions.lat != 'number' ||
    typeof locationOptions.lng != 'number'
  ) {
    console.log(
      'Location ' + key + ' was missing either the lat or lng attribute.'
    );
    return false;
  }

  var title =
    typeof locationOptions.title != 'undefined' ? locationOptions.title : '';
  var url =
    typeof locationOptions.url != 'undefined'
      ? locationOptions.url
      : 'https://awoiaf.westeros.org/index.php/' + key;
  var marker = new google.maps.Marker({
    position: new google.maps.LatLng(locationOptions.lat, locationOptions.lng),
    title: title,
    icon: { path: google.maps.SymbolPath.CIRCLE, strokeOpacity: 0, scale: 3 },
    map: map,
  });
  google.maps.event.addListener(marker, 'click', function (event) {
    if (ctrlPressed) window.location = '#@' + key;
    else window.open(url, '_blank');
  });
  return marker;
}

//Colored shapes matching the borders of the 9 constituencies of Westeros
function createPolygon(map, regionOptions) {
  //Sample input-> {coords:giftCoords, color:"#000000", key:"Gift"}     (giftCoords is an array of google.maps.LatLng objects)
  if (typeof regionOptions.key != 'string')
    return console.log('Region was missing a key attribute.');
  if (typeof regionOptions.color != 'string')
    return console.log(
      'Region ' + regionOptions.key + ' was missing a color attribute.'
    );
  if (
    typeof regionOptions.coords != 'object' ||
    regionOptions.coords.length < 3
  )
    return console.log(
      'Region ' + regionOptions.key + ' was missing a coords attribute.'
    );

  var url = 'https://awoiaf.westeros.org/index.php/' + regionOptions.key;
  var polygon = new google.maps.Polygon({
    paths: regionOptions.coords,
    fillColor: regionOptions.color,
    fillOpacity: 0.7,
    strokeWeight: 0,
    visible: false,
    map: map,
  });
  google.maps.event.addListener(polygon, 'click', function (event) {
    window.open(url, '_blank');
  });
  return polygon;
}

//Coats of arms for every known noble family (some locations were guessed)
function markNobility(map, nobilityOptions) {
  //Sample input-> {wikiKey:"House_Bolton", seatKey:"Dreadfort", imgRatio:(120/102), img:"https://awoiaf.westeros.org/images/thumb/7/76/Bolton.png/102px-Bolton.png", isGreat:true, chapters:[196,999]}  (seatKey may be replaced with lat & lng)
  if (typeof nobilityOptions.img != 'string')
    return console.log(
      nobilityOptions.wikiKey +
        ' in the nobility list was missing an img attribute.'
    );

  if (typeof nobilityOptions.seatKey == 'string')
    var coords = checkLocKey(nobilityOptions.seatKey);
  else {
    if (
      typeof nobilityOptions.lat == 'number' &&
      typeof nobilityOptions.lng == 'number'
    )
      var coords = checkLocKey('', nobilityOptions.lat, nobilityOptions.lng);
    else return false;
  }
  if (!coords) return false;

  var title =
    typeof nobilityOptions.wikiKey == 'string'
      ? decodeURI(nobilityOptions.wikiKey).replace(/_/g, ' ')
      : 'No name listed';
  if (typeof nobilityOptions.clue == 'string') {
    if (nobilityOptions.clue == 'mountain clan')
      title = title.replace(/House/, 'Clan');
    else title += ' (somewhere in ' + nobilityOptions.clue + ')';
  }
  var isGreat =
    typeof nobilityOptions.isGreat != 'undefined'
      ? nobilityOptions.isGreat
      : false;
  var imgRatio =
    typeof nobilityOptions.imgRatio == 'number'
      ? nobilityOptions.imgRatio
      : 4 / 3;
  var imgHeight = isGreat ? 60 : 30;
  var anchorPoint = $.isArray(nobilityOptions.anchor)
    ? new google.maps.Point(
        nobilityOptions.anchor[0],
        nobilityOptions.anchor[1]
      )
    : new google.maps.Point(imgHeight / imgRatio / 2, imgHeight / 2);
  var icon = new google.maps.MarkerImage(
    nobilityOptions.img,
    null,
    null,
    anchorPoint,
    new google.maps.Size(imgHeight / imgRatio, imgHeight)
  );
  var marker = new google.maps.Marker({
    position: new google.maps.LatLng(coords[0], coords[1]),
    title: title,
    icon: icon,
    visible: false,
    map: map,
  });
  if (typeof nobilityOptions.wikiKey == 'string')
    google.maps.event.addListener(marker, 'click', function (event) {
      window.open(
        'https://awoiaf.westeros.org/index.php/' + nobilityOptions.wikiKey,
        '_blank'
      );
    });
  marker['isGreat'] = isGreat;
  marker['chapters'] =
    typeof nobilityOptions.chapters == 'object'
      ? nobilityOptions.chapters
      : [0, 999];
  marker['episodes'] =
    typeof nobilityOptions.episodes == 'object'
      ? nobilityOptions.episodes
      : [0, 999];
  return marker;
}

//Teardrop markers & lines marking the path of each major character
function markPathSegment(map, overlayOptions) {
  if (typeof overlayOptions.icon == 'string') {
    switch (overlayOptions.icon) {
      case 'skull':
        var icon = 'skull.png';
        break;
      case 'lost':
        var icon = 'question-mark.gif';
        break;
      default:
        var icon =
          'https://chart.googleapis.com/chart?chst=d_map_xpin_letter&chld=pin' +
          overlayOptions.icon; //or d_map_pin_letter_withshadow
    }

    switch (overlayOptions.icon.substring(0, 3)) {
      case '_sl':
        icon = { url: icon, anchor: new google.maps.Point(23, 33) };
        break;
      case '_sr':
        icon = { url: icon, anchor: new google.maps.Point(0, 33) };
        break;
    }

    if (typeof overlayOptions.key == 'string') {
      //Sample input-> {icon:"greyC", chapters:[0,17], episodes:[0,1], key:"Winterfell"}
      checkResults = checkLocKey(overlayOptions.key);
      if (!checkResults)
        return console.log(
          'Item ' +
            overlayOptions.key +
            ' in the character path list does not match a known location.'
        );

      var overlay = new google.maps.Marker({
        position: new google.maps.LatLng(checkResults[0], checkResults[1]),
        icon: icon,
        visible: false,
        map: map,
      });
    } else {
      //Sample input-> {icon:"greyE", chapters:[15,19], episodes:[1,1], coord:[26.4312,-114.1406]}
      if (typeof overlayOptions.coord != 'object')
        return console.log(
          'One item in the character path list is missing a coord attribute.'
        );
      if (overlayOptions.coord.length != 2)
        return console.log(
          'One item in the character path list has an inappropriate coord attribute: ' +
            overlayOptions.coord
        );
      if (!checkLocKey('', overlayOptions.coord[0], overlayOptions.coord[1]))
        return console.log(
          'One item in the character path list has coordinates outside the edges of the map: ' +
            overlayOptions.coord
        );

      var overlay = new google.maps.Marker({
        position: new google.maps.LatLng(
          overlayOptions.coord[0],
          overlayOptions.coord[1]
        ),
        icon: icon,
        visible: false,
        map: map,
      });
    }
  } //icons

  if (typeof overlayOptions.line == 'string') {
    //Sample input-> {line:"#808080", chapters:[20], episodes:2, path:[[26.4312,-114.1406], "Darry", [16.0669,-109.5263],"Hayford","King%27s_Landing"]}
    if (typeof overlayOptions.line != 'string')
      return console.log(
        'One item in the character path list has neither a icon nor line attribute.'
      );
    if (typeof overlayOptions.path != 'object')
      return console.log(
        'One item in the character path list is missing a path attribute.'
      );

    //Parse the array of coordinates in the path attribute
    var path = [];
    var checkResults = [];
    for (i in overlayOptions.path) {
      if (typeof overlayOptions.path[i] == 'string') {
        checkResults = checkLocKey(overlayOptions.path[i]);
        if (!checkResults) continue;
        path.push(new google.maps.LatLng(checkResults[0], checkResults[1]));
      }
      if (typeof overlayOptions.path[i] == 'object') {
        if (overlayOptions.path[i].length != 2) continue;
        if (
          !checkLocKey('', overlayOptions.path[i][0], overlayOptions.path[i][1])
        )
          continue;
        path.push(
          new google.maps.LatLng(
            overlayOptions.path[i][0],
            overlayOptions.path[i][1]
          )
        );
      }
    }

    var overlay = new google.maps.Polyline({
      path: path,
      strokeColor: overlayOptions.line,
      strokeOpacity: 1.0,
      strokeWeight: 8,
      visible: false,
      map: map,
    });

    //TEMPORARY
    //google.maps.event.addListener(overlay, 'click', function(event) {
    //  new google.maps.InfoWindow({position:event.latLng, content:Math.round(event.latLng.lat()*10000)/10000+","+Math.round(event.latLng.lng()*10000)/10000 }).open(map);
    //});
  } //lines

  if (typeof overlayOptions.arrow == 'string') {
    //Sample input-> {arrow:"#808080", chapters:59, coord:[42.0329, -125.5078], heading:210}
    if (typeof overlayOptions.coord != 'object')
      return console.log(
        'One arrow in the character path list is missing a coord attribute.'
      );
    if (overlayOptions.coord.length != 2)
      return console.log(
        'One arrow in the character path list has an inappropriate coord attribute: ' +
          overlayOptions.coord
      );
    if (typeof overlayOptions.heading != 'number')
      return console.log(
        'One arrow in the character path list is missing a heading attribute.'
      );

    var overlay = new ArrowOverlay(
      map,
      new google.maps.LatLng(overlayOptions.coord[0], overlayOptions.coord[1]),
      overlayOptions.heading,
      overlayOptions.arrow,
      1
    );
  } //arrows

  overlay['chapters'] = [999, 999];
  if (typeof overlayOptions.chapters == 'number')
    overlay.chapters[0] = overlayOptions.chapters;
  if (typeof overlayOptions.chapters == 'object') {
    if (overlayOptions.chapters.length == 2)
      if (typeof overlayOptions.chapters[1] == 'number')
        overlay.chapters[1] = overlayOptions.chapters[1];
    if (typeof overlayOptions.chapters[0] == 'number')
      overlay.chapters[0] = overlayOptions.chapters[0];
  }

  overlay['episodes'] = [99, 99];
  if (typeof overlayOptions.episodes == 'number')
    overlay.episodes[0] = overlayOptions.episodes;
  if (typeof overlayOptions.episodes == 'object') {
    if (overlayOptions.episodes.length == 2)
      if (typeof overlayOptions.episodes[1] == 'number')
        overlay.episodes[1] = overlayOptions.episodes[1];
    if (typeof overlayOptions.episodes[0] == 'number')
      overlay.episodes[0] = overlayOptions.episodes[0];
  }

  return overlay;
}