exports.handler=function(request,context){

	var client_ID='';
	var client_secret='';
	
	var sensors={
		'sensor_001':'スイッチ01',
		'sensor_002':'スイッチ02',
	};
	var buttons={
		'button_001':{"name":"テスト1","URL":"http://example.com/XXXXXXXXXXXXXXXXXXX"},
		'button_002':{"name":"テスト2","URL":"http://example.com/XXXXXXXXXXXXXXXXXXX"},
	};
	
	
	
	
	
	
	
	
	
	if(request.directive.header.namespace=='Alexa.Discovery'&&request.directive.header.name=='Discover'){
		var eps=[];
		for(var n in sensors){
			eps.push({
				"endpointId":n,
				"manufacturerName":"dummy",
				"friendlyName":sensors[n],
				"description":"dummy sensor",
				"displayCategories": ["MOTION_SENSOR"],
				"cookie":{},
				"capabilities":[
					{"type": "AlexaInterface","interface": "Alexa","version": "3"},
					{"type": "AlexaInterface","interface": "Alexa.MotionSensor","version": "3","properties":{"supported":[{"name":"detectionState"}],"proactivelyReported": true,"retrievable": false}},
					{"type": "AlexaInterface","interface": "Alexa.EndpointHealth","version": "3","properties":{"supported":[{"name":"connectivity"}],"proactivelyReported": true,"retrievable": false}},
				]
			});
		}
		
		for(var n in buttons){
			eps.push({
				"endpointId":n,
				"manufacturerName":"dummy",
				"friendlyName":buttons[n].name,
				"description":"GET "+buttons[n].URL,
				"displayCategories": ["LIGHT"],
				"cookie":{},
				"capabilities":[
					{"type": "AlexaInterface","interface": "Alexa","version": "3"},
					{"type": "AlexaInterface","interface": "Alexa.PowerController","version": "3","properties":{"supported":[]}},
				]
			});
		}
		request.directive.header.name = "Discover.Response";
		context.succeed({event:{header:request.directive.header,payload:{"endpoints":eps}}});
	}else if(request.directive.header.namespace=='Alexa.PowerController'&&request.directive.header.name=='TurnOn'){
		var url=buttons[request.directive.endpoint.endpointId].URL;
		(new Promise((resolve, reject) => {
			require(url.match(/^https:/)?"https":"http").get(url, res => resolve()).on('error', error=>reject(error));
		})).then(()=>{
			request.directive.header.name="Response";
			request.directive.context={"properties":[]};
			context.succeed({"event":request.directive});
		});
	}else if(
		(request.directive.header.namespace=='Alexa'&&request.directive.header.name=='ReportState')
		||(request.directive.header.namespace=='Alexa.MotionSensor'&&request.directive.header.name=='detectionState')
		||(request.directive.header.namespace=='Alexa.EndpointHealth')
	){
		request.directive.header.name="StateReport";
		request.directive.context={"properties":[]};
		context.succeed({"event":request.directive});
	}else if(request.directive.header.namespace=='Alexa.Authorization'&&request.directive.header.name=='AcceptGrant'){
		var post='grant_type=authorization_code&code='+request.directive.payload.grant.code+'&client_id='+client_ID+'&client_secret='+client_secret;
		(new Promise((resolve, reject) => {
			var req=require("https").request({
				host:'api.amazon.com',
				path:'/auth/o2/token',
				method:'POST',
				headers:{
					'Content-Type': 'application/x-www-form-urlencoded;Accept-Charset=UTF-8',
					'Content-Length': post.length
				}
			},res =>{
				var data='';
				res.setEncoding='UTF-8';
				res.on('data',function(d){
					data+=d;
				});
				res.on('end',function(){
					resolve(data);
				});
			}).on('error', error=>reject(error));
			req.write(post);
			req.end();
		})).then((json)=>{
			var obj=JSON.parse(json);
			console.log('AcceptGrant:token='+obj.refresh_token);
			
			request.directive.header.name="AcceptGrant.Response";
			context.succeed({"event":{"header":request.directive.header,"payload":{}}});
		});
	}
};