index.html

<script type="text/javascript">
    RED.nodes.registerType('fake-wemo', {
        category: 'input',
        color: '#70b44b',
        defaults: {
            initialState: {
                value: false,
                validate: RED.validators.typedInput('initialStateType')
            },
            initialStateType: {
                value: 'bool', required: true
            },
            name: {
                value: ''
            },
            friendlyName: {
                value: '', required: true
            },
            interface: {
                value: '', required: true
            },
            port: {
                value: '', required: true
            },
            onTopic: {
                value: ''
            },
            onPayload: {
                value: ''
            },
            offTopic: {
                value: ''
            },
            offPayload: {
                value: ''
            }
        },
        inputs: 0,
        outputs: 1,
        icon: 'wemo.png',
        label: function() {
            return this.name || 'fake-wemo';
        },
        paletteLabel: 'fake wemo',
        align: 'left',
        oneditprepare: function() {
            $('#node-input-initialState').typedInput({
                default: 'bool',
                typeField: $('#node-input-initialStateType'),
                types: ['flow', 'global', 'bool']
            });
            $.getJSON('fake-wemo/' + this.id, function(data) {
                var $dropdown = $('#node-input-interface');
                if (data.length === 0) {
                    data.push({ value: '', text: 'No active interfaces found' });
                    $dropdown.prop('disabled', 'disabled');
                }
                $.each(data, function() {
                    $dropdown.append(
                        $('<option />')
                            .val(this.value)
                            .text(this.text)
                    );
                });
            });
        }
    });
</script>

<script type="text/x-red" data-template-name="fake-wemo">

    <div class="form-row">
        <label for="node-input-name">
            <i class="icon-tag"></i>Node Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>

    <hr>
    <div class="form-row">
        <label for="node-input-initialState">
            <i class="icon-tag"></i>Initial State *</label>
        <input type="hidden" id="node-input-initialStateType">
        <input style="width: 70%" type="text" id="node-input-initialState">
    </div>
    <div class="form-row">
        <label for="node-input-friendlyName">
            <i class="icon-tag"></i>Friendly Name *</label>
        <input type="text" id="node-input-friendlyName" placeholder="Friendly Name">
    </div>
    <div class="form-row">
        <label for="node-input-interface"><i class="fa fa-globe"></i> Bind *</label>
        <select id="node-input-interface" placeholder="Interface"/>
        <span>Port *</span> <input type="text" id="node-input-port" style="width:65px">
    </div>
    <hr>
    <div class="form-row">
        <label for="node-input-onTopic">
            <i class="icon-tag"></i>On Topic</label>
        <input type="text" id="node-input-onTopic" placeholder="">
    </div>
    <div class="form-row">
        <label for="node-input-onPayload">
            <i class="icon-tag"></i>On Payload</label>
        <input type="text" id="node-input-onPayload" placeholder="">
    </div>

    <hr>
    <div class="form-row">
        <label for="node-input-offTopic">
            <i class="icon-tag"></i>Off Topic</label>
        <input type="text" id="node-input-offTopic" placeholder="">
    </div>
    <div class="form-row">
        <label for="node-input-offPayload">
            <i class="icon-tag"></i>Off Payload</label>
        <input type="text" id="node-input-offPayload" placeholder="">
    </div>
</script>

<script type="text/x-red" data-help-name="fake-wemo">
    <h1>Fake Wemo</h1>

    <p>
        Drag the node on to your workspace, configure it as below and ask Alexa to discover devices. You can do this by
        voice or in the Alexa app.
    </p>

    <table>
        <thead>
            <tr>
                <th>Config</th>
                <th>Description</th>
            </tr>
        </thead>
        <tbody>
            <tr>
                <td>
                    <code>Node Name</code>
                </td>
                <td>This is the name of the node as it appears in the Node-RED workspace</td>
            </tr>
            <tr>
                <td>
                    <code>Initial State</code>
                </td>
                <td>The on/off state reported to Alexa when this node is reloaded</td>
            </tr>
            <tr>
                <td>
                    <code>Friendly Name</code>
                </td>
                <td>This is the name you will use in voice commands to turn your node on or off</td>
            </tr>
            <tr>
                <td>
                    <code>Bind</code>
                </td>
                <td>The interface and port to bind an internal http server to, that allows Alexa to send commands to your node</td>
            </tr>
            <tr>
                <td>
                    <code>On Topic</code>
                </td>
                <td>This is the topic sent when you ask Alexa to turn your node on</td>
            </tr>
            <tr>
                <td>
                    <code>On Payload</code>
                </td>
                <td>This is the payload sent when you ask Alexa to turn your node on</td>
            </tr>
            <tr>
                <td>
                    <code>Off Topic</code>
                </td>
                <td>This is the topic sent when you ask Alexa to turn your node off</td>
            </tr>
            <tr>
                <td>
                    <code>Off Payload</code>
                </td>
                <td>This is the payload sent when you ask Alexa to turn your node off</td>
            </tr>
        </tbody>
    </table>
    <h2>Troubleshooting</h2>
    <p>
        If Alexa can't discover the devices faked by this node, please check you don't have a firewall blocking the port
        you've selected above and also port 1900/udp
    </p>
</script>