nimiq-demo/index.html at master · nimiq/nimiq-demo · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
<!DOCTYPE html>
<html>
<head>
    <meta charset=utf-8 />
    <title>Nimiq Demo</title>
    <script type="module">
import * as Nimiq from '/nimiq/web/index.js';

window.Nimiq = Nimiq;

function _onConsensusChanged(state) {
    document.getElementById('message').innerText = `Consensus ${state}.`;

    if (state === 'established') {
        _updateBalance();
    }
}

async function _updateBalance() {
    // Get current balance.
    const account = await $.client.getAccount($.keypair.toAddress());
    _onBalanceChanged(account);
}

function _onBalanceChanged(account) {
    console.log(`New balance of ${$.keypair.toAddress().toUserFriendlyAddress()} is ${account.balance}.`);
    document.getElementById('balance').innerText = (account.balance / 1e5).toFixed(2);
}

async function _onHeadChanged() {
    const height = await $.client.getHeadHeight();
    console.log(`Now at height ${height}.`);
    document.getElementById('height').innerText = height;

    // Recheck balance at every macro block (60s).
    if (Nimiq.Policy.isMacroBlockAt(height)) {
        _updateBalance();
    }
}

async function _updatePeerCount(_peerId, _reason, peerCount, _peerInfo) {
    // console.log(`Now connected to ${peerCount} peers.`);
    document.getElementById('peers').innerText = peerCount;
}

const nimiqInitPromise = Nimiq.default().then(() => {
    // Create client configuration so it can be manipulated before creating the client.
    window.config = new Nimiq.ClientConfiguration();
}).catch(error => {
    alert(`Error: ${error.message}`);
    throw error;
});

window.init = async function(network = 'testnet', syncMode = 'light') {
    await nimiqInitPromise;

    document.getElementById('message').innerText = 'Nimiq loaded. Connecting and establishing consensus.';

    const $ = {};
    window.$ = $;

    // Instantiate the client based on the configuration.
    // The client automatically connects to the network when instantiated.
    window[network]();
    window.config.syncMode(syncMode);
    window.config.logLevel('debug');
    $.client = await Nimiq.Client.create(window.config.build());

    $.keypair = await Nimiq.KeyPair.generate();
    document.getElementById('address').innerText = $.keypair.toAddress().toUserFriendlyAddress();

    $.client.addConsensusChangedListener(_onConsensusChanged);

    $.client.addHeadChangedListener(_onHeadChanged);

    $.client.addPeerChangedListener(_updatePeerCount);
}

window.mainnet = function() {
    window.config.network('mainalbatross');
    window.config.seedNodes([
        '/dns4/aurora.seed.nimiq.com/tcp/443/wss',
        '/dns4/catalyst.seed.nimiq.network/tcp/443/wss',
        '/dns4/cipher.seed.nimiq-network.com/tcp/443/wss',
        '/dns4/eclipse.seed.nimiq.cloud/tcp/443/wss',
        '/dns4/lumina.seed.nimiq.systems/tcp/443/wss',
        '/dns4/nebula.seed.nimiq.com/tcp/443/wss',
        '/dns4/nexus.seed.nimiq.network/tcp/443/wss',
        '/dns4/polaris.seed.nimiq-network.com/tcp/443/wss',
        '/dns4/photon.seed.nimiq.cloud/tcp/443/wss',
        '/dns4/pulsar.seed.nimiq.systems/tcp/443/wss',
        '/dns4/quasar.seed.nimiq.com/tcp/443/wss',
        '/dns4/solstice.seed.nimiq.network/tcp/443/wss',
        '/dns4/vortex.seed.nimiq.cloud/tcp/443/wss',
        '/dns4/zenith.seed.nimiq.systems/tcp/443/wss',
    ]);
    console.log('Configured client for mainnet.');
}

window.testnet = function() {
    window.config.network('testalbatross');
    window.config.seedNodes([
        '/dns4/seed1.pos.nimiq-testnet.com/tcp/8443/wss',
        '/dns4/seed2.pos.nimiq-testnet.com/tcp/8443/wss',
        '/dns4/seed3.pos.nimiq-testnet.com/tcp/8443/wss',
        '/dns4/seed4.pos.nimiq-testnet.com/tcp/8443/wss',
    ]);
    console.log('Configured client for testnet.');
}
    </script>

    <!-- Use Nimiq's brand font (regular and bold weights). -->
    <link href="https://fonts.googleapis.com/css?family=Mulish:400,700" rel="stylesheet">
</head>
<body>
    <h1>Getting started with the Nimiq Client API</h1>
    This HTML file demonstrates the most simple way to build web applications on top of the <a target="_blank" href="https://nimiq.com">Nimiq Blockchain</a>.
    <h2>Start Client</h2>
    <p id="network-selector">
        Network:
        <select id="network">
            <option value="testnet" selected>Testnet</option>
            <option value="mainnet">Mainnet</option>
        </select>
    </p>
    <p id="client-selector">
        Sync mode:
        <a href="#" data-sync-mode="pico">pico</a>
        <a href="#" data-sync-mode="light">light</a>
    </p>
    <div id="client-info" style="display:none">
        <p>Status: <span id="message">Loading Nimiq.</span></p>
        <p>Account address: <span id="address"><em>loading</em></span></p>
        <p>Balance: &#x2B23; <span id="balance"><em>loading</em></span></p>
        <p>Current block height: <span id="height"><em>loading</em></span></p>
        <p>Current number of peers: <span id="peers"><em>loading</em></span></p>
    </div>

    <h2>Source Code</h2>
    <a target="_blank" href="https://github.com/nimiq/nimiq-demo/blob/master/index.html">View Source Code on Github.</a>

    <style>
        body {
            background: #F4F4F4;
            color: #1F2348; /* Nimiq Indigo */
            font-family: 'Mulish', sans-serif;
            padding: 6% 8%;
        }

        a {
            color: #0582CA; /* Nimiq Blue */
        }
    </style>

    <script>
        /* Attach UI event handlers. */
        document.querySelectorAll('#client-selector a').forEach(el => {
            el.addEventListener('click', (event) => {
                event.preventDefault();

                const network = document.querySelector('#network').value;
                document.getElementById('network-selector').textContent = 'Network: ' + network;

                const syncMode = el.dataset.syncMode;
                document.getElementById('client-selector').textContent = 'Sync mode: ' + syncMode;

                document.getElementById('client-info').style.display = 'block';

                init(network, syncMode);
            });
        });
    </script>
</body>
</html>