import systemConfiguration from 'utils/SystemConfiguration.js'
const bitcoin = require('bitcoinjs-lib')

let BtcUtil = {
	getBalance:async function(address,success) {
			let balance=0;
			try{
				let res= await uni.request({
					url: 'http://scan.weirui0755.com/btc/api/address/balancetrend/btc/' + address, //请求接口
					header: {
						'content-type': 'application/x-www-form-urlencoded', //自定义请求头信息
					}
				});
				if (res.data.code === 1) {
					if(res.data.data.length>0){
						var data=res.data.data[0];
						console.log(data,11111)
						for(let b in data){
							balance=data[b];
						}
					}
				}
			}catch(e){
				//TODO handle the exception
			}
			return balance;
	},
	sendTransaction:async function(fromAddress, toAddress, value, privateKey){
		
		let bob = new bitcoin.ECPair.fromWIF(privateKey);
		
		const txb = new bitcoin.TransactionBuilder(systemConfiguration.constant.btcNetwork);
		
		txb.setVersion(1);
		// 在这个交易中， bob在第0个位置，上图所示
		txb.addInput("5799a647d6b89a9f73122d75faee6f5a0210bd3cb22c48a70d35eac33ce5d426", 0);
		txb.addOutput(toAddress, 2000000);
		console.log(txb,1111111111)
		// 签名交易，0代表索引，输入排序，这里只有一个输入，所以是第0位。
		txb.sign(0, bob);
		
		// 序列化成一串字符
		const tx = txb.build().toHex();
		console.log(tx);
		const result = await fetch('https://api.blockcypher.com/v1/btc/test3/txs/push',{
		  method:'post',
		  headers:{'Content-Type':'application/json'},
		  body:JSON.stringify({tx})
		});
		
		// 打印结果
		console.log(result);
	}	
}
export default BtcUtil