vapid-configuration.html

<script type="text/javascript">
    RED.nodes.registerType('vapid-configuration', {
        category: 'config',
        defaults: {
            subject: { value: "", required: true },
            publicKey: { value: "", required: true },
            privateKey: { value: "", required: true },
            gcmApiKey: { value: "" },
            timeout: { value: 0 },
            name: { value: "" }
        },
        label: function () {
            return this.name || this.subject;
        },
        oneditprepare: function () {
            var node = this;

            // Older nodes (version 0.0.3 and below) have no timeout option, so set it to 0 (= no custom timeout)
            if (this.timeout == undefined) {
                $('#node-config-input-timeout').val(0);
            }
            
            $("#node-input-generateKeyPair").click(function () {
                if ($("#node-config-input-publicKey").val() || $("#node-config-input-privateKey").val()) {
                    if (!confirm("The current keypair will be overwritten!  Are you sure to continue?")) {
                        // The user has clicked the 'Cancel' button
                        return;
                    }
                }
                
                // Ask the server side flow to generate a new key pair
                $.getJSON('vapid_configuration/generate_key_pair', function(jsonData) {
                    // Show the new keys on the config screen
                    $("#node-config-input-publicKey").val(jsonData.publicKey);
                    $("#node-config-input-privateKey").val(jsonData.privateKey);
                    
                    // Make sure the validators are being triggerd, otherwise the red border will remain around the input fields
                    $("#node-config-input-publicKey").change();
                    $("#node-config-input-privateKey").change();
                }).error(function() {
                    RED.notify("Cannot create VAPID key pair.  See Node-RED log for more details...", "error");
                });
            });
        }
    });

</script>

<script type="text/x-red" data-template-name="vapid-configuration">
    <div class="form-row">
        <label for="node-config-input-subject"><i class="icon-tag"></i> Subject</label>
        <input type="text" id="node-config-input-subject" placeholder="This must be either a URL or a 'mailto:' address.">
    </div>
    <div class="form-row">
        <label>&nbsp;</label>
        <button id="node-input-generateKeyPair"><i class="fa fa-exchange"></i> Generate VAPID keypair</button>
    </div>
    <div class="form-row">
        <label for="node-config-input-publicKey"><i class="icon-tag"></i> Public Key</label>
        <input type="text" id="node-config-input-publicKey" placeholder="The public VAPID key">
    </div>
    <div class="form-row">
        <label for="node-config-input-privateKey"><i class="icon-tag"></i> Private Key</label>
        <input type="text" id="node-config-input-privateKey" placeholder="The public VAPID key">
    </div>
    <div class="form-row">
        <label for="node-config-input-gcmApiKey"><i class="icon-tag"></i> GCM API Key (for older browsers)</label>
        <input type="text" id="node-config-input-gcmApiKey" placeholder="The API key to send with the GCM request">
    </div>
    <div class="form-row">
        <label for="node-config-input-timeout"><i class="icon-tag"></i> Timeout</label>
        <input type="number" id="node-config-input-timeout">
    </div>
    <div class="form-row">
        <label for="node-config-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-config-input-name" placeholder="Name">
    </div>
</script>

<script type="text/x-red" data-help-name="vapid-configuration">
    <p>Configuration for VAPID. You can generate the key pair using the <i>"Generate VAPID keypair"</i> button or online here: <a href="https://web-push-codelab.glitch.me/" target="_blank">https://web-push-codelab.glitch.me</a>.</p>
    <p>Read more about the VAPID specification here: <a href="https://tools.ietf.org/html/rfc8292" target="_blank">https://tools.ietf.org/html/rfc8292</a>.</p>
    <p>For Chrome prior to version 52 and some old browsers, you're also still required to include a <code>gcm_sender_id</code> in your web app's manifest.json.</p>
    <p>Optionally a timeout can be specified (in milliseconds).  A timeout value of 0 is considered as no timeout.</p>
</script>