import { scene, camera, controls, renderer } from './common/scene';
import { setEvents } from './common/setEvents';
import { convertToXYZ, getEventCenter, geodecoder } from './common/geoHelpers';
import { mapTexture } from './common/mapTexture';
import { getTween, memoize } from './common/utils';
import topojson from 'topojson';
import THREE from 'THREE';
import d3 from 'd3';
import fdage from 'fdage';

var root,rotate;



var getIndex = function(elem,index){
	index = index || 'index';
	return elem.getAttributeNode(index)&&elem.getAttributeNode(index).nodeValue;
}
var setIndex = function(elem,name,index){
	index = index || 'index';
	elem.setAttribute(index,name);
}
var getByIndex = function(elem,name,index){  
	var result;
	for(var i=0; i<elem.children.length; i++){
		 if(getIndex(elem.children[i],index)===name){
			 result = elem.children[i];
		 }
	}			 
	if(result) return result;
	else for(var i=0; i<elem.children.length; i++){
		result = result || getByIndex(elem.children[i],name,index);
	}
	return result;	
}

var body = d3.select('body').node();



d3.json('data/world.json', function (err, data) {

  d3.select("#loading").transition().duration(500)
    .style("opacity", 0).remove();

  var currentCountry,currentChosed,currentChName, overlay, chosedOverlay;
  var pointDown = 0;//鼠标按下为true,抬起为false
  var draged = 0; //是否才拖拽过
  
  var segments = 155; // number of vertices. Higher = better mouse accuracy
  var isMobile = /Android|iPhone|iPod|iPad|Windows Phone|IEMobile|BlackBerry|webOS/.test(navigator.userAgent);
  var countryObj;
  
  
  // Setup cache for country textures
  var countries = topojson.feature(data, data.objects.countries);
  var geo = geodecoder(countries.features);

  var textureCache = memoize(function (cntryID, color) {
    var country = geo.find(cntryID);
    return mapTexture(country, color);
  });
  window.mapTexture = mapTexture;
  // Base globe with blue "water"
  /* let blueMaterial = new THREE.MeshPhongMaterial({color: '#0889d5', transparent: true});  //2B3B59
  let sphere = new THREE.SphereGeometry(400, segments, segments);
  let baseGlobe = new THREE.Mesh(sphere, blueMaterial);
  baseGlobe.rotation.y = Math.PI;
  baseGlobe.addEventListener('click', onGlobeClick);
  baseGlobe.addEventListener('mousemove', onGlobeMousemove); */
  //baseGlobe.addEventListener('mousemove', onGlobeMousemove);

  var texture2DLoader = new THREE.TextureLoader();
  var earthMap, alphaGrayMap;
  earthMap=texture2DLoader.load("data/newEarth3.jpg"/* ,function(t){earthMap = t;} */);//newEarth.png
 
  let mapMat0  = new THREE.MeshPhongMaterial({map: earthMap,/* alphaMap:alphaGrayMap, */transparent: true});
  var outerLayer = new THREE.Mesh(new THREE.SphereGeometry(400, segments, segments), mapMat0);
  outerLayer.rotation.y = Math.PI;
  outerLayer.addEventListener('click', onGlobeClick);
  outerLayer.addEventListener('mousemove', onGlobeMousemove);
  
 
  
   //add base map layer with all countries
  /* let worldTexture = mapTexture(countries, '#647089');
  let mapMaterial  = new THREE.MeshPhongMaterial({map: worldTexture,transparent: true});
  var baseMap = new THREE.Mesh(new THREE.SphereGeometry(400, segments, segments), mapMaterial);
  baseMap.rotation.y = Math.PI; */

  // create a container node and add the two meshes
  root = new THREE.Object3D();
  root.scale.set(1.2, 1.2, 1.2);
  //root.add(baseGlobe);
  //root.add(baseMap);
  root.add(outerLayer);

  scene.add(root);

  
  var bind = function(elem, event, func, bool) {
	bool = bool || false;
	if (elem.addEventListener)
		elem.addEventListener(event, func, bool);
	else if (elem.attachEvent)
		elem.attachEvent('on' + event, func);
  }
  var unbind = function(elem, event, func, bool) {
	bool = bool || false;
	if (elem.removeEventListener)
		elem.removeEventListener(event, func, bool);
	else if (elem.detachEvent)
		elem.detachEvent('on' + event, func);

  }
  
  var canvas = d3.select("#canvas").node();
  //地球滑动绑定：
  window.lastMouse = {};
  bind(canvas,"mousedown",function(event){
	  window.lastMouse.x = event.offsetX;
	  window.lastMouse.y = event.offsetY;
  })
  
  //地球初始转动绑定：
  rotate = true;
  var endRotate = function(){
	  rotate = false;
	  unbind(canvas,"mousedown",endRotate);
  }
  bind(canvas,"mousedown",endRotate);
  
  
   
  function onGlobeClick(event,originEvent) {//mouseup  在canvas上mouseup不一定会执行这个
	
	if(lastMouse.x){
		var x = originEvent.offsetX;
		var y = originEvent.offsetY;
		if((Math.abs(window.lastMouse.x - x)+Math.abs(window.lastMouse.y - y))>10){
			window.lastMouse.x = null;
			window.lastMouse.y = null;
			return;
		}
	}
	window.lastMouse.x = null;
	window.lastMouse.y = null;
	
   
    // Get pointc, convert to latitude/longitude
    var latlng = getEventCenter.call(this, event,400);//radius = 150
	latlng[1]+=root.rotation.y*180/Math.PI;
    // Get new camera position
    var temp = new THREE.Mesh();
    temp.position.copy(convertToXYZ(latlng, 980));
    temp.lookAt(root.position);
    temp.rotateY(Math.PI);

    for (let key in temp.rotation) {
      if (temp.rotation[key] - camera.rotation[key] > Math.PI) {
        temp.rotation[key] -= Math.PI * 2;
      } else if (camera.rotation[key] - temp.rotation[key] > Math.PI) {
        temp.rotation[key] += Math.PI * 2;
      }
    }

    var tweenPos = getTween.call(camera, 'position', temp.position);
    d3.timer(tweenPos);

    var tweenRot = getTween.call(camera, 'rotation', temp.rotation);
    d3.timer(tweenRot);
	 
	 onGlobeMousemove(event,null,this);
	
	
	
	
  }

  //document.title = "asas"
  function onGlobeMousemove(event,originEvent,_this) {  //为什么mousedown的时候会立即触发mousemove？
	if(window.lastMouse.x){
		return;
	}
	
    var map, material;

    // Get pointc, convert to latitude/longitude
    var latlng = getEventCenter.call(this||_this, event, 400);

    // Look for country at that latitude/longitude
    var country = geo.search(latlng[0], latlng[1]);
	if(country && _this && country.code !== currentChosed){//_this表明是由click的触发的
		currentChosed = country.code;
		currentChName = country.chName;
		d3.select("#introduce").select("h2").html(currentChName);
		d3.select("#introduce").select(".below").html(currentChosed);
		if(d3.select("#introduce").node().style.display === "none"){
			d3.select("#introduce").node().style.display = "";
			rePos({text:true,earth:true});
		}else{
			rePos({text:true});
		}
		
		//map = isMobile ? mapTexture(geo.find(country.code), '#FF0011'):textureCache(country.code, '#FF0011');
		//if(isMobile) document.title = "isMobile"
		map = textureCache(country.code, '#FF0000');	
		material = new THREE.MeshPhongMaterial({map: map,opacity:.5, transparent: true});
		if (!chosedOverlay) {
			chosedOverlay = new THREE.Mesh(new THREE.SphereGeometry(405, 30, 30), material);
			chosedOverlay.rotation.y = Math.PI;
			root.add(chosedOverlay);
		}else{
			chosedOverlay.material = material;
		}
	}
    if (!isMobile && country !== null && country.code !== currentCountry) {
		currentCountry = country.code;
		map = textureCache(country.code, '#FFFF00');
		//map = isMobile ? mapTexture(geo.find(country.code), '#FFF900') : textureCache(country.code, '#FFF900');
		material = new THREE.MeshPhongMaterial({map: map,opacity:.5, transparent: true});
      if (!overlay) {
        overlay = new THREE.Mesh(new THREE.SphereGeometry(405, 30, 30), material);
        overlay.rotation.y = Math.PI;
        root.add(overlay);
      } else {
		
        overlay.material = material;
      }
    }else if(country == null && _this){
		 d3.select("#introduce").node().style.display = "none";
		
	}
  }

  setEvents(camera,canvas, [outerLayer], 'click');
  setEvents(camera,canvas, [outerLayer], 'mousemove', 10);
  
  
  
  function rePos(o) {//introduce重新定位
    //var onlyTitle = (d3.select('#introMenu').node().style.display==="none");
	var intro = d3.select("#introduce").node();
	var infoH = intro.clientHeight;
	if(infoH){
		if(o.earth){
		  var e = Math.min(window.innerWidth/2,window.innerHeight*0.95);
		  var offset = Math.max(0, window.innerHeight - e)/2;
		  canvas.style.top = offset + "px";
		  renderer.setSize(e, e);
		}
		if(o.text){
			var infoH = intro.clientHeight;
			var earthH = canvas.clientHeight || window.innerWidth*0.3;//(onlyTitle?0.1:0.3)
			if(infoH){
			  var f1 = parseFloat(intro.style["font-size"]);
			  if(f1!=f1) f1 = 1; //NAN
			  var ratio = earthH/infoH/1.2;
			  var size = Math.min(Math.max(1, f1 * ratio ), 1.5);
			  intro.style["font-size"] = size + "em";
			  (size<1.1)?(addClass(intro,"weight")):(removeClass(intro,"weight"));
			  
			   
			   
			}
		
		}
		
	}
		 
   }
   
   
	var canvasToImg = function(canvas){
		var type = 'png';
		var imgData = canvas.toDataURL(type);
		return imgData;
	}




	 
	
	
	d3.json('data/worldInfo.json', function (err, introData) {//和info跳转有关
		//跳转绑定： 
		var intro = d3.select("#introduce").node();
		var menu = d3.select("#introMenu").node();
		var artifact = d3.select("#artifact").node();
		
		for(var i=0; i<3; i++){//三个菜单的点击
			bind(menu.children[i],"click",function(i){
				return function(){
					
					countryObj = introData.countries[currentChosed];
					if(!countryObj)return;//没有改国家的展览
					//if(state[state.length-1] == "earth")hangUpEarth();
					var type = getIndex(this);
					switch(type){
						/* case "countryIntro": 
							showCountryIntro();					break;
						case "culture":
							showCultureIntro();					break; */
						case "artifact":
							showArtifactIntro();				break;

					/* 	case "artifactIntro":
							artifactIntro();				break; */
						/* case "interview":		
							artifactInterview();			break;
						case "music":		
							artifactMusic();				break;	 */
						default:
							console.log("其他");
					}
					
				}
			}(i))
		}
		 
		 
		var hangUpEarth = function(){
			renderer.render(scene, camera);
			var img = document.createElement('img');
			img.id = "ToEarth";
			img.src = canvasToImg(canvas);
			img.style.top = canvas.style.top;
			img.style.cursor = "pointer";
			img.style.height = img.style.width = canvas.style.height;
			img.className = "canvasArea";
			img.style['box-shadow'] = "none";
			canvas.parentElement.appendChild(img);
			canvas.style.display = "none";
			setTimeout(function(){
				img.style.width = img.style.height = "50px";
				img.style.top = "0";
				bind(img, "click", backToEarth);
					
			},30)
			
			
		}
		var dropDownEarth = function(){
			var img = d3.select('#ToEarth').node();
			unbind(img, "click", backToEarth);
			img.style.width = "";
			
			
			var e = Math.min(window.innerWidth/2,window.innerHeight*0.95);
			var offset = Math.max(0, window.innerHeight - e)/2;
			
			img.style.height = img.style.width = e + "px";
			img.style.top = offset + "px";
			
			setTimeout(function(){
				img.parentElement.removeChild(img);
				canvas.style.display = "";
				rePos({text:true,earth:true});
			},400)
		}
		 
		 
		var backBtn = d3.select("#back").node();
		bind(backBtn,"click",function(){
			var from = state[state.length-1];
			var to = state[state.length-2];
			if(!to) return;
			state.pop();
			switch(from){
				case "countryIntro": 
					exitCountryIntro();					break;
				case "culture":
					exitCultureIntro();					break;
				case "artifact":
					exitArtifactIntro();				break;
					
				case "itemDisplay":
					exitItemDisplay();					break;
			/* 	case "artifactIntro":
					exitArtifactIntro();				break; */
				case "interview":		
					exitArtifactInterview();			break;
				case "music":		
					exitArtifactMusic();				break;	
				default:
					console.log("其他");
			}
			
			switch(to){
				case "earth":
					backToEarth();						break;
				case "countryIntro": 
					showCountryIntro();					break;
				case "culture":
					showCultureIntro();					break;
				case "artifact":
					showArtifactIntro(true);				break;

			/* 	case "artifactIntro":
					artifactIntro();				break; */
				case "interview":		
					artifactInterview();			break;
				case "music":		
					artifactMusic();				break;	
				default:
					console.log("其他");
					
					
			}
			
			
		})
		
		
		
		function backToEarth(){//确保清除所有,因为包括退了一级的和直接回到地球的
			state = ["earth"];
			artifact.style.display = "none";
			//intro.children[0].innerHTML = currentChName;
			menu.removeChild(menu.children[0])
			menu.children[0].innerHTML = '<span class="number">NO.1</span>国家背景<span class="EngPostfix">National Background</span>';
			menu.children[1].innerHTML = '<span class="number">NO.2</span>器物介绍<span class="EngPostfix">Instrument Introduction</span>';
			menu.children[2].innerHTML = '<span class="number">NO.3</span>文化传承<span class="EngPostfix">Cultural Heritage</span>';
			menu.children[2].style.display = "";
			menu.style.display = "";
			setIndex(menu.children[0],"countryIntro");
			setIndex(menu.children[1],"artifact");
			setIndex(menu.children[2],"culture");
			removeClass(intro,"largeBelow");
			intro.children[1].innerHTML = currentChosed;
			var modelArea = d3.select("#modelArea").node();//将模型和图片展示清除
			var imageArea = d3.select("#imageArea").node();
			if(modelArea){
				modelArea.parentElement.removeChild(modelArea);
			}
			if(imageArea){
				imageArea.parentElement.removeChild(imageArea);
			}
			dropDownEarth();
		}
		function exitItemDisplay(){//从单个展示到列表
			var modelArea = d3.select("#modelArea").node();
			var imageArea = d3.select("#imageArea").node();
			if(modelArea){
				modelArea.style.display = "none";
			}
			if(imageArea){
				imageArea.style.display = "none";
			}
		}
		function exitArtifactIntro(){//从文字介绍到 单个展示三个菜单
			
		}
		
		function showArtifactIntro(backHere){//back表示是从下一级后退到这里的，此时不用重新生成列表.
			
			
			menu.style.display = "none";
			//menu.innerHTML = '<span>乐器介绍</span><div index="artifactIntro"></div><a index="interview">专家访谈</a><a index="music">音频欣赏</a>';
			
			if(!backHere){
				//menu.children[0].innerHTML = "乐器介绍";
				hangUpEarth();
				var add = document.createElement('div');	//新增一个不可点击的选项：乐器介绍
				add.innerHTML = '<span class="title"><span class="point">·</span>乐器介绍<span class="EngPostfix">Instrument Introduction</span></span><span class="instrumentText" index="artifactIntro"></span>'
				menu.insertBefore(add,menu.children[0]);
				menu.children[1].innerHTML = '<span class="point">·</span>专家访谈<span class="EngPostfix">Experts Interview</span>';
				menu.children[2].innerHTML = '<span class="point">·</span>音频欣赏<span class="EngPostfix">Music Appreciation</span>';
				menu.children[3].style.display = "none";
				//setIndex(menu.children[0],"artifactIntro");
				setIndex(menu.children[1],"interview");
				setIndex(menu.children[2],"music");
				setIndex(menu.children[3],"");
				state.push("artifact");
				intro.children[1].innerHTML = "器物介绍";
				addClass(intro,"largeBelow");
				var len1 = countryObj.artifact.length;
				var len2 = artifact.children.length;
				
				
				for(var i=0; i<len1; i++){
					if(i>len2-1){
						var item = document.createElement('div');
						var inner = document.createElement('div');
						addClass(item,"item");
						artifact.appendChild(item);
						item.appendChild(inner);
						setIndex(item,i);
						bind(item,"click",clickItem)//绑定点击事件
						
					}
					else{
						item = artifact.children[i];
					}
					item.style.display = "";//解除隐藏
					var itemObj = countryObj.artifact[i];
					if(itemObj.type === "image"){
						item.children[0].style['background-image'] = "url(data/display/600/"+itemObj.name+".jpg)";
					}
				}
				if(len2>len1){//多余的隐藏
					for(var i=len1; i<len2; i++){
						artifact.children[i].style.display = "none";
					}
				}
			}
			artifact.style.display = "";
		}	
		function clickItem(){//点击列表
			state.push('itemDisplay');
			var itemObj = countryObj.artifact[getIndex(this)];
			menu.style.display = "";
			getByIndex(menu,"artifactIntro").innerText = itemObj.intro;
			rePos({text:true})
			if(itemObj.type === "model"){
				var modelArea = d3.select("#modelArea").node();
				if(!modelArea){
					modelArea = document.createElement("div");
					addClass(modelArea,"canvasArea");
					modelArea.id = "modelArea";
					body.appendChild(modelArea);
				}else{
					if(getIndex(modelArea)!==itemObj.name){//虽已有，但展示的是别的模型，要删除重新创建
						modelArea.parentElement.removeChild(modelArea);
						modelArea = document.createElement("div");
						addClass(modelArea,"canvasArea");
						modelArea.id = "modelArea";
						body.appendChild(modelArea);
					}
					modelArea.style.display = "";
				}
				if(getIndex(modelArea)!==itemObj.name){
					fdage.embed( "data/display/"+itemObj.name+".4dage", { root:modelArea, backgroundColor:[238/255,238/255,238/255],ifPlain:true, width: 800, height: 600, autoStart: true, fullFrame: true, pagePreset: false } );
					setIndex(modelArea,itemObj.name);
				}
			}else{
				var imageArea = d3.select("#imageArea").node();
				if(!imageArea){
					imageArea = document.createElement("div");
					addClass(imageArea,"canvasArea");
					imageArea.id = "imageArea";
					body.appendChild(imageArea);
					var inner = document.createElement("div");
					imageArea.appendChild(inner);
					inner.style.width = inner.style.height = "100%";
				}else{
					var inner = imageArea.children[0];
					imageArea.style.display = "";
				}
				inner.style["background-image"] = "url(data/display/2048/"+itemObj.name+".jpg"+")";
			}
			
		}
		
		
		
	});

  
  
  
  
  
  
  
  
  
  
  
  
  
});


function animate() {
	controls.update();
	if(root && rotate)root.rotation.y+=0.002;
	requestAnimationFrame(animate);
	renderer.render(scene, camera);
}
animate();