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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<title>crypto balance</title>
<!-- Load required Bootstrap and BootstrapVue CSS -->
<link type="text/css" rel="stylesheet" href="https://unpkg.com/bootstrap/dist/css/bootstrap.min.css" />
<link type="text/css" rel="stylesheet" href="https://unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.css" />
<!-- Load polyfills to support older browsers -->
<script src="https://polyfill.io/v3/polyfill.min.js?features=es2015%2CIntersectionObserver" crossorigin="anonymous"></script>
<!-- Load Axios -->
<script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
<!-- Load Vue followed by BootstrapVue -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue.min.js"></script>
<!-- Load the following for BootstrapVueIcons support -->
<script src="https://unpkg.com/bootstrap-vue@latest/dist/bootstrap-vue-icons.min.js"></script>
</head>
<body>
<div id="app">
<nav class="navbar navbar-expand-sm navbar-light bg-light" role="navigation" style="margin-bottom: 0">
<div class="container">
<div class="navbar-header">
<a class="navbar-brand" href="#" @click="page='home'">Crypto Balance</a>
</div>
<!-- Toggler/collapsibe Button -->
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsibleNavbar">
<span class="navbar-toggler-icon"></span>
</button>
<!-- Navbar links -->
<div class="collapse navbar-collapse" id="collapsibleNavbar">
<ul class="nav navbar-nav">
<li class="nav-item" :class="{'active':page=='home'}"><a class="nav-link" href="#" @click="page='home'" >Home</a></li>
<li class="nav-item" :class="{'active':page=='options'}"><a class="nav-link" href="#" @click="page='options'">Options</a></li>
<li class="nav-item" :class="{'active':page=='about'}"><a class="nav-link" href="#" @click="page='about'">About</a></li>
</ul>
<ul class="nav navbar-nav ml-auto">
<li class="nav-item">
<input class="navbar-form form-control" :class="[showall ? 'btn-primary' : '']" type="button" :value="[showall ? 'Hide Empty' : 'Show All']" @click="showall = !showall">
</li>
<li class="nav-item">
<input class="navbar-form form-control" type="button" value="Save" @click="saveBalances">
</li>
</ul>
</div>
</div>
</nav>
<div class="container pt-2" v-if="page=='home'">
<div class="page-header">
<h1>Top cryptocurrencies</h1>
</div>
<div>
<div class="row border-bottom">
<div class="col col-12 col-sm-3 col-md-4 py-1 my-auto d-none d-sm-block">
<div class="row">
<div class="col-12 col-md-4">Symbol</div>
<div class="col-12 col-md-8">Name</div>
</div>
</div>
<div class="col col-4 col-sm-3 col-md-3 py-1 my-auto">Price</div>
<div class="col col-4 col-sm-3 col-md-2 py-1 my-auto">Amount</div>
<div class="col col-4 col-sm-3 col-md-3 py-1 my-auto text-right">{{(total * fiat[baseFiat] ).toFixed(2)}} {{baseFiat}}</div>
</div>
<div class="row border-top" v-for="currency in currencies" v-show="showall || !balanceIsEmpty(currency.ticker)">
<div class="col col-12 col-sm-3 col-md-4 py-1 my-auto">
<div class="row">
<div class="col-4 col-sm-12 col-md-4">{{currency.ticker}}</div>
<div class="col-8 col-sm-12 col-md-8">{{currency.name}}</div>
</div>
</div>
<div class="col col-4 col-sm-3 col-md-3 py-1 my-auto">{{(currency.price * fiat[baseFiat]).toFixed(2)}} {{baseFiat}}</div>
<div class="col col-4 col-sm-3 col-md-2 py-1 my-auto"><input type="number" step="0.00000001" class="form-control" v-model="balances[currency.ticker]" ></div>
<div class="col col-4 col-sm-3 col-md-3 py-1 my-auto text-right">{{ Number( (typeof(balances[currency.ticker]) != 'undefined' ? balances[currency.ticker] : "0" ) * currency.price * fiat[baseFiat] ).toFixed(2) }} {{baseFiat}}</div>
</div>
</div>
</div>
<div class="container pt-2" v-if="page=='about'">
<div class="page-header">
<h1>About</h1>
</div>
<div>
<p>This site is a small single page application on VueJS. Cryptocurrency rates are obtained from the
CoinCap.io API. Balances are stored in your browser's <a href="https://www.w3schools.com/html/html5_webstorage.asp" target="_blank">localStorage</a>.
Your balance therefore stays private and is not sent or stored on any server.</p>
<p>Fiat currency conversion rates are obtained from floatrates.com.</p>
<p>Enter the amount you have of each cryptocurrency in each row and click save to save it to your browser storage.</p>
<h2>Links</h2>
<ul>
<li><a href="https://docs.coincap.io/?version=latest" target="_blank">Coincap.io API</a></li>
<li><a href="https://floatrates.com/" target="_blank">FloatRates</a></li>
<li><a href="https://vuejs.org/">Vue JS</a></li>
</ul>
<h2>Donate</h2>
<p>Feel free to donate if you wish to contribute to cover domain costs and future improvements.</p>
<ul>
<li>Bitcoin: bc1qcufnl6wnfz5lwgrhv9ran4gkyccplpq3svh5hs</li>
<li>Bitcoin Cash: 1vJ27gXRJ1Hk9a2dneHC77sAMevFkiXeQ</li>
<li>Litecoin: ltc1q9gety6t0nqs54m482jfq7jq7s89rp5huj33v0t</li>
<li>Dogecoin: DAubQkYqxAwsWNz1m9zN6RZfnstirUwiBL</li>
</ul>
</div>
</div>
<div class="container pt-2" v-if="page=='options'">
<div class="page-header"><h1>Options</h1></div>
<form enctype="multipart/form-data">
<div class="form-group row mb-1">
<label for="base-currency" class="col-sm-2 col-form-label">Import Balances</label>
<div class="col-sm-10 my-auto">
<input type="file" class="form-control" accept="application/JSON" @change="filesChange($event.target.files)" >
</div>
</div>
<div class="form-group row mb-1">
<label for="base-currency" class="col-sm-2 col-form-label">Export Balances</label>
<div class="col-sm-10 my-auto">
<a class="btn btn-default" :href="exportUrl" download="crypto-balance.json" @click="prepareExportUrl()">Export</a>
</div>
</div>
<div class="form-group row mb-1">
<label for="base-currency" class="col-sm-2 col-form-label">Base Currency</label>
<div class="col-sm-10 my-auto">
<select class="form-control" v-model="baseFiat">
<option v-for="(rate, ticker) in fiat" :value="ticker">{{ticker}} ({{rate}})</option>
</select>
</div>
</div>
</form>
</div>
</div>
<script type="text/javascript">
var app = new Vue({
el: '#app',
data: {
showall: true,
page: 'home',
apiReturn: [],
balances: {},
fiat: {"USD":1.0},
baseFiat: "USD",
currencies : [],
exportUrl : '#'
},
computed:{
total: function(){
var total = 0.0
this.currencies.forEach(function(currency){
if(typeof(app.balances[currency.ticker]) != 'undefined')
total += app.balances[currency.ticker] * currency.price;
})
return total
}
},
mounted() {
if(localStorage.getItem('balances') !== null){
this.balances = JSON.parse(localStorage.getItem('balances'))
this.showall = false
}
axios.get('https://api.coincap.io/v2/assets')
.then(response => ( this.parseApi(response) ))
axios.get('https://www.floatrates.com/daily/usd.json')
.then(response => {
this.parseFiat(response)
if(localStorage.getItem('baseFiat') !== null ){
this.baseFiat = localStorage.getItem('baseFiat')
}
})
.catch( err => {
console.error(err)
this.parseDefaultFiat()
} )
},
methods: {
filesChange(files) {
if (!files.length) return;
var reader = new FileReader();
reader.onload = function(e) {
var contents = e.target.result
app.loadJson(contents)
app.page='home'
};
reader.readAsText(files[0]);
},
loadJson($json) {
this.balances = JSON.parse($json)
},
prepareExportUrl(){
var data = JSON.stringify(this.balances)
var type = 'application/json'
this.exportUrl = window.URL.createObjectURL(
new Blob([data], { type })
);
},
balanceIsEmpty(ticker){
if (typeof(this.balances[ticker]) != 'undefined' && this.balances[ticker] > 0 )
return false
else
return true
},
saveBalances() {
localStorage.setItem('balances',JSON.stringify(this.balances))
localStorage.setItem('baseFiat',this.baseFiat)
},
parseFiat(response) {
if(typeof(response.data.eur) == 'undefined'){
throw "rates unavailable"
}
this.fiat = {"USD":1.0}
const codes = Object.keys(response.data).sort()
codes.forEach(key=>{
const code = response.data[key].code
const rate = response.data[key].rate
this.fiat[code] = rate
})
},
parseDefaultFiat(){
this.fiat = {"USD":1.0}
this.baseFiat = "USD"
},
parseApi(response) {
this.currencies = []
response.data.data.forEach(ticker => (
this.currencies.push({
'ticker' : ticker.symbol,
'name' : ticker.name,
'price' : parseFloat(ticker.priceUsd)
})
))
}
}
})
</script>
</body>
</html>