// 包路径
const package_NdefRecord = 'android.nfc.NdefRecord';
const package_NdefMessage = 'android.nfc.NdefMessage';
const package_TECH_DISCOVERED = 'android.nfc.action.TECH_DISCOVERED';
const package_Intent = 'android.content.Intent'; 
const package_Activity = 'android.app.Activity'; 
const package_PendingIntent = 'android.app.PendingIntent'; 
const package_IntentFilter = 'android.content.IntentFilter'; 
const package_NfcAdapter = 'android.nfc.NfcAdapter'; 
const package_Ndef = 'android.nfc.tech.Ndef'; 
const package_NdefFormatable = 'android.nfc.tech.NdefFormatable'; 
const package_Parcelable = 'android.os.Parcelable'; 
const package_String = 'java.lang.String'; 

let NfcAdapter;
let NdefRecord;
let NdefMessage;
let readyWriteData = false;
let readyRead = false;
let noNFC = false;
let techListsArray = [
	['android.nfc.tech.IsoDep'],
	['android.nfc.tech.NfcA'],
	['android.nfc.tech.NfcB'],
	['android.nfc.tech.NfcF'],
	['android.nfc.tech.Nfcf'],
	['android.nfc.tech.NfcV'],
	['android.nfc.tech.NdefFormatable'],
	['android.nfc.tech.MifareClassi'],
	['android.nfc.tech.MifareUltralight']
];
// 要写入的数据
let text = '{id:123,name:nfc,stie:cssmini.com}';
let readResult = '';

export default {
	listenNFCStatus: function () {
		let that = this;
		try {
			let main = plus.android.runtimeMainActivity();
			let Intent = plus.android.importClass('android.content.Intent');
			let Activity = plus.android.importClass('android.app.Activity');
			let PendingIntent = plus.android.importClass('android.app.PendingIntent');
			let IntentFilter = plus.android.importClass('android.content.IntentFilter');
			NfcAdapter = plus.android.importClass('android.nfc.NfcAdapter');
			let nfcAdapter = NfcAdapter.getDefaultAdapter(main);
			
			if(nfcAdapter == null){
				uni.showToast({
				  title: '设备不支持NFC！',
				  icon: 'none'
				})
				noNFC = true;
				return;
			}
			
			if (!nfcAdapter.isEnabled()) {
				uni.showToast({
				  title: '请在系统设置中先启用NFC功能！',
				  icon: 'none'
				});
				noNFC = true;
				return;
			}else{
				noNFC = false;
			}
			
			let intent = new Intent(main, main.getClass());
			intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
			let pendingIntent = PendingIntent.getActivity(main, 0, intent, 0);
			let ndef = new IntentFilter("android.nfc.action.TECH_DISCOVERED");
			ndef.addDataType("*/*");
			let intentFiltersArray = [ndef];
			
			plus.globalEvent.addEventListener('newintent',function() {
				console.log('newintent running');
				that.readData();
				// 轮询调用 NFC
				that.nfcRuning()
				// setTimeout(that.nfcRuning(), 1000);
			});
			plus.globalEvent.addEventListener('pause',function(e) {
				console.log('pause running');
				if (nfcAdapter) {
					//关闭前台调度系统
					//恢复默认状态
					nfcAdapter.disableForegroundDispatch(main);
				}
			});
			plus.globalEvent.addEventListener('resume',function(e) {
				console.log('resume running');
				if (nfcAdapter) {
					 //开启前台调度系统
					// 优于所有其他NFC
					nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray);
				}
			});
			nfcAdapter.enableForegroundDispatch(main, pendingIntent, intentFiltersArray, techListsArray); 
		} catch (e) {
			console.error(e);
		}
	},
	nfcRuning: function () {
		NdefRecord = plus.android.importClass("android.nfc.NdefRecord");
		NdefMessage = plus.android.importClass("android.nfc.NdefMessage");
		let main = plus.android.runtimeMainActivity();
		let intent = main.getIntent();
		let that = this;
		
		console.log("action type:" + intent.getAction());
		if (package_TECH_DISCOVERED == intent.getAction()) {
			console.log('开始操作')
			if (readyWriteData) {
				that.write(intent);
				readyWriteData = false;
			} else if (readyRead) {
				that.read(intent);
				readyRead = false;
			}
		}
	},
	write(intent) {
		try {
			toast('请勿移开标签 正在写入...');
			console.log("text=" + text);
			
			let textBytes = plus.android.invoke(text, "getBytes");
			// image/jpeg text/plain  
			let textRecord = new NdefRecord(NdefRecord.TNF_MIME_MEDIA,
											plus.android.invoke("text/plain", "getBytes"),  
											plus.android.invoke("", "getBytes"), textBytes);
			let message = new NdefMessage([textRecord]);
			let Ndef = plus.android.importClass('android.nfc.tech.Ndef');
			let NdefFormatable = plus.android.importClass('android.nfc.tech.NdefFormatable');
			let tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
			let ndef = Ndef.get(tag);
			if (ndef != null) {
				// 待写入的数据长度
				let size = message.toByteArray().length;
				ndef.connect();
				if (!ndef.isWritable()) {
					toast('tag不允许写入！');
					return;
				}
				if (ndef.getMaxSize() < size) {
					toast('文件大小超出容量！');
					return;
				}
				ndef.writeNdefMessage(message);
				toast('写入数据成功！');
				return;
			} else {
				let format = NdefFormatable.get(tag);
				if (format != null) {
					try {
						format.connect();
						format.format(message);
						toast('格式化tag并且写入message');
						return;
					} catch (e) {
						toast('格式化tag失败.');
						return;
					}
				} else {
					toast('Tag不支持NDEF');
					return;
				}
			}
		} catch (e) {
			toast('写入失败');
			console.log("error=" + e);
		}
	
	},
	read(intent) {
		toast('请勿移开标签正在读取数据');
		let that = this;
		// NFC id
		let bytesId = intent.getByteArrayExtra(NfcAdapter.EXTRA_ID);
		let nfc_id = that.byteArrayToHexString(bytesId);
		console.log('nfc_id:', nfc_id);
		uni.$emit('getRfid', nfc_id)
		console.log(intent)
		let Parcelable = plus.android.importClass("android.os.Parcelable");
		let rawmsgs = intent.getParcelableArrayExtra("android.nfc.extra.NDEF_MESSAGES");
		console.log(rawmsgs)
		//let rawmsgs = intent.getParcelableArrayExtra();
		
		if(rawmsgs != null && rawmsgs.length > 0) {
			let records = rawmsgs[0].getRecords();
			let result = records[0].getPayload();
			let data = plus.android.newObject("java.lang.String", result);
			toast('NFC 数据：' + data);
			console.log('NFC 数据：',data);
			readResult = data;
		}else{
			toast('没有读取到数据');
		}
	},
	byteArrayToHexString: function (inarray) { // converts byte arrays to string  
		let i, j, inn;  
		let hex = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"];  
		let out = "";  
		
		for(j = 0; j < inarray.length; ++j) {
			inn = inarray[j] & 0xff;  
			i = (inn >>> 4) & 0x0f;  
			out += hex[i];  
			i = inn & 0x0f;  
			out += hex[i];  
		}  
		return out;  
	},
	writeData: function () {
		if(noNFC){
			toast('请检查设备是否支持并开启 NFC 功能！');
			return;
		}
		// 轮询条件
		readyWriteData = true;
		toast('请将NFC标签靠近！');
	},
	readData: function () {
		if(noNFC){
			toast('请检查设备是否支持并开启 NFC 功能！');
			return;
		}
		// 轮询条件
		readyRead = true;
		toast('请将NFC标签靠近！');
	}
}
function toast(content){
	uni.showToast({
		title: content,
		icon: 'none'
	})
}