send-btc.js.in

var sendBTC = {
    fiatRates: {
        'USD': null,
        'GBP': null,
        'EUR': null,
        'RUB': null,
        'CNY': null,
        'KRW': null,
        'JPY': null,
    },
    refreshQRCodeDelay: 400,

    fiatSymbol: function(fiat) {
        return '<span class="fa fa-' + fiat.toLowerCase() + '"></span>';
    },

    refreshQRCode: function(uri) {
        delete this.refreshQRCodeID;
        var qrdiv = $('#send-btc-modal-qrcode');
        qrdiv.empty();
        qrdiv.qrcode(uri);
    },

    refreshURI: function(delayQRCode) {
        var uri = 'bitcoin:' + this.address + '?amount=' + encodeURIComponent($('#send-btc-amount').val()) + '&label=' + encodeURIComponent($('#send-btc-label').val());
        $('#send-btc-modal-form').attr('action', uri);
        if (this.refreshQRCodeID)
            clearTimeout(this.refreshQRCodeID);
        if (delayQRCode) {
            var me = this;
            this.refreshQRCodeID = setTimeout(function() { me.refreshQRCode(uri); }, me.refreshQRCodeDelay);
        } else {
            delete this.refreshQRCodeID;
            this.refreshQRCode(uri);
        }
    },

    refreshBTC: function() {
        var rate = this.fiatRates[this.fiat];
        if (rate) {
            $('#send-btc-amount').val(($('#send-btc-fiat-amount').val() / rate).toFixed(8));
            this.refreshURI(true);
        }
    },

    refreshFiat: function() {
        var rate = this.fiatRates[this.fiat];
        if (rate)
            $('#send-btc-fiat-amount').val(($('#send-btc-amount').val() * rate).toFixed(2));
    },

    setFiat: function(fiat) {
        if (!(fiat in this.fiatRates))
            throw 'Invalid currency "' + fiat + '"';
        this.fiat = fiat;
        $('#send-btc-modal-fiat-symbol').html(this.fiatSymbol(fiat));
        this.refreshFiat();
    },

    updateExchange: function() {
        var me = this;
        $.getJSON('https://www.willl.party/ticker', function(data, textStatus) {
            var options = $('#send-btc-modal-fiat-options');
            options.empty();
            var gotSome = false;
            for (fiat in me.fiatRates) {
                if (fiat in data) {
                    gotSome = true;
                    me.fiatRates[fiat] = data[fiat].last;
                    options.append(
                        '<li><a href="#" onclick="sendBTC.setFiat(\'' + fiat + '\');">' +
                        me.fiatSymbol(fiat) + ' ' + fiat +
                        ' <span class="text-muted">' + me.fiatRates[fiat] + '</span></a></li>'
                    );
                }
            }
            if (!gotSome)
                options.append('<li class="dropdown-header">No market data</li>');
            options.append(
                '<li role="separator" class="divider"></li>' +
                '<li><a href="#" onclick="sendBTC.updateExchange();">' +
                '<span class="fa fa-refresh"></span> Refresh</a></li>'
            );
            me.refreshFiat();
        });
    },

    insertModal: function() {
        $('#send-btc-modal').remove();
        $('html').prepend('<span id="send-btc-modal"></span>');
        $('#send-btc-modal').addClass('modal fade');
        $('#send-btc-modal').attr('tabindex', '-1').attr('role', 'dialog').attr('aria-labelledby', 'send-btc-modal-title');
        $('#send-btc-modal').html('@MODAL_HTML@');
    },

    init: function() {
        this.insertModal();
        sendBTC.updateExchange();
        $('#send-btc-modal').on('show.bs.modal', function(event) {
            var trigger = $(event.relatedTarget);
            var address = trigger.data('address') || '';
            var label = trigger.data('label') || '';
            var amount = trigger.data('amount') || '0.0';
            var fiat = trigger.data('fiat') || 'USD';
        
            if (!$.isNumeric(amount) || amount < 0)
                throw 'Invalid amount "' + amount + '"';
            if (!(fiat in sendBTC.fiatRates))
                throw 'Invalid currency "' + fiat + '"';
        
            sendBTC.address = address;
            sendBTC.label = label;
            $('#send-btc-address').text(address);
            $('#send-btc-address').attr('href', 'https://blockchain.info/address/' + address);
            $('#send-btc-label').val(label);
            $('#send-btc-amount').val(amount);
            sendBTC.setFiat(fiat);
            sendBTC.refreshURI();
        });
    },
};

sendBTC.init();