node-red-contrib-matrix-chat/src/matrix-crypt-file.html

<script type="text/javascript">
    RED.nodes.registerType('matrix-decrypt-file',{
        category: 'matrix',
        color: '#00b7ca',
        icon: "matrix.png",
        outputLabels: ["success", "error"],
        inputs:1,
        outputs:2,
        defaults: {
            name: { value: null }
        },
        label: function() {
            return this.name || "Decrypt File";
        },
        paletteLabel: 'Decrypt File'
    });
</script>

<script type="text/html" data-template-name="matrix-decrypt-file">
    <div class="form-row">
        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
</script>

<script type="text/html" data-help-name="matrix-decrypt-file">
    <h3>Details</h3>
    <p>Files sent in an encrypted room are themselves encrypted. Use this node to encrypt/decrypt files. Note: This node will download the encrypted file so be cautious of large downloads.</p>

    <h3>Inputs</h3>
    <dl class="message-properties">
        <dt>msg.content
            <span class="property-type">object</span>
        </dt>
        <dd> content of the decrypted message</dd>

        <dt>msg.content.file
            <span class="property-type">object</span>
        </dt>
        <dd> the information needed to decode the file</dd>

        <dt>msg.url
            <span class="property-type">string | null</span>
        </dt>
        <dd> the decoded mxc url.</dd>
    </dl>

    <h3>Outputs</h3>
    <ol class="node-ports">
        <li>Success
            <dl class="message-properties">
                <dt>msg.type <span class="property-type">string</span></dt>
                <dd>The message type (ex: <code>m.file</code>, <code>m.image</code>, <code>m.video</code>, etc)</dd>

                <dt>msg.payload <span class="property-type">buffer</span></dt>
                <dd>decoded file contents.</dd>

                <dt>msg.filename <span class="property-type">string</span></dt>
                <dd>filename of the decoded file (if content.filename isn't defined on the message we fallback to content.body).</dd>

                <dt>msg.thumbnail_payload <span class="property-type">buffer</span></dt>
                <dd>If the file is an image then this property is set to the buffer of the thumbnail. If not an image this is left off.</dd>
            </dl>
        </li>
        <li>Error
            <dl class="message-properties">
                <dt>msg.error <span class="property-type">string</span></dt>
                <dd>the error that occurred.</dd>
            </dl>
        </li>
    </ol>

    <h3>References</h3>
    <ul>
        <li><a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types">MIME Types</a> - description of <code>msg.contentType</code> format</li>
    </ul>
</script>