node-red-contrib-nostr/dist/nodes/nostr-npub-filter/nostr-npub-filter.html

Node-RED nodes for seamless Nostr protocol integration. Features robust WebSocket handling, event filtering, and NPUB-based routing. Built with TypeScript for type safety and extensive testing. Perfect for Nostr automation flows.

<script type="text/html" data-template-name="nostr-npub-filter">
    <div class="form-row">
        <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-row">
        <label for="node-input-relay"><i class="fa fa-globe"></i> Relay</label>
        <input type="text" id="node-input-relay">
    </div>
    <div class="form-row">
        <label for="node-input-filterMode"><i class="fa fa-users"></i> Filter Mode</label>
        <select id="node-input-filterMode">
            <option value="single">Single User</option>
            <option value="multiple">Multiple Users (up to 21)</option>
        </select>
    </div>
    <div class="form-row filter-single">
        <label for="node-input-singleNpub"><i class="fa fa-user"></i> Nostr Public Key</label>
        <input type="text" id="node-input-singleNpub" placeholder="npub1...">
        <div class="form-tips">Enter the npub of the user you want to track</div>
    </div>
    <div class="form-row filter-multiple">
        <label for="node-input-multipleNpubs"><i class="fa fa-users"></i> Nostr Public Keys</label>
        <textarea id="node-input-multipleNpubs" placeholder="Enter one npub per line (max 21)" rows="8" style="width: 70%;"></textarea>
        <div class="form-tips">Enter up to 21 npubs, one per line</div>
    </div>
    <div class="form-row">
        <label for="node-input-eventKinds"><i class="fa fa-list"></i> Event Types</label>
        <select id="node-input-eventKinds" multiple>
            <option value="0">Profile Metadata</option>
            <option value="1">Text Notes</option>
            <option value="3">Contacts</option>
            <option value="6">Reposts</option>
            <option value="7">Reactions</option>
            <option value="9735">Zaps</option>
        </select>
        <div class="form-tips">Select which types of events to track</div>
    </div>
</script>

<script type="text/javascript">
    RED.nodes.registerType('nostr-npub-filter', {
        category: 'nostr',
        color: '#a6bbcf',
        defaults: {
            name: { value: "" },
            relay: { type: "nostr-relay-config", required: true },
            filterMode: { value: "single" },
            singleNpub: { value: "", required: false },
            multipleNpubs: { value: "", required: false },
            eventKinds: { value: [0, 1], required: true }
        },
        icon: "font-awesome/fa-users",
        label: function() {
            if (this.filterMode === 'single' && this.singleNpub) {
                return this.name || `Track ${this.singleNpub.substring(0, 12)}...`;
            } else if (this.filterMode === 'multiple') {
                const count = (this.multipleNpubs.match(/\n/g) || []).length + 1;
                return this.name || `Track ${count} users`;
            }
            return this.name || "npub filter";
        },
        oneditprepare: function() {
            function showHideFields() {
                $('.filter-single, .filter-multiple').hide();
                $(`.filter-${$('#node-input-filterMode').val()}`).show();
            }
            
            $('#node-input-filterMode').on('change', showHideFields);
            showHideFields();

            // Validate number of npubs
            $('#node-input-multipleNpubs').on('change keyup paste', function() {
                const lines = $(this).val().toString().split('\n').filter(line => line.trim());
                if (lines.length > 21) {
                    $('#node-input-multipleNpubs').addClass('input-error');
                    $('.form-tips').html('<span style="color: red;">Maximum 21 npubs allowed</span>');
                } else {
                    $('#node-input-multipleNpubs').removeClass('input-error');
                    $('.form-tips').html('Enter up to 21 npubs, one per line');
                }
            });
        }
    });
</script>

<script type="text/html" data-help-name="nostr-npub-filter">
    <p>Filter Nostr events from one or more users by their npubs.</p>
    
    <h3>Properties</h3>
    <dl class="message-properties">
        <dt>Relay
            <span class="property-type">config</span>
        </dt>
        <dd>Select the Nostr relay configuration to use</dd>

        <dt>Filter Mode
            <span class="property-type">string</span>
        </dt>
        <dd>Choose between tracking a single user or multiple users (up to 21)</dd>

        <dt>Nostr Public Key(s)
            <span class="property-type">string</span>
        </dt>
        <dd>Enter the npub(s) of the user(s) you want to track</dd>

        <dt>Event Types
            <span class="property-type">array</span>
        </dt>
        <dd>Select which types of events to track for the user(s)</dd>
    </dl>

    <h3>Outputs</h3>
    <dl class="message-properties">
        <dt>payload
            <span class="property-type">object</span>
        </dt>
        <dd>The matched Nostr event</dd>

        <dt>npub
            <span class="property-type">string</span>
        </dt>
        <dd>The npub of the user who created the event</dd>

        <dt>relay
            <span class="property-type">string</span>
        </dt>
        <dd>The relay URL where the event was found</dd>
    </dl>
</script>