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

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.

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = default_1;
function default_1(RED) {
    // Create a function to initialize the node
    async function initializeNode(config) {
        RED.nodes.createNode(this, config);
        // Get the relay configuration node
        this.relay = RED.nodes.getNode(config.relay);
        if (!this.relay) {
            this.error("No relay configuration found");
            this.status({ fill: "red", shape: "ring", text: "Missing relay config" });
            return;
        }
        this.npubValue = config.npubValue;
        this.eventKinds = config.eventKinds || [0, 1]; // Default to metadata and text notes
        try {
            // Dynamically import ESM dependencies
            const { nip19 } = await Promise.resolve().then(() => __importStar(require('nostr-tools')));
            // Convert npub to hex if needed
            if (this.npubValue) {
                try {
                    const decoded = nip19.decode(this.npubValue);
                    if (decoded.type === 'npub') {
                        this.hexPubkey = decoded.data;
                        this.status({ fill: "green", shape: "dot", text: "Ready" });
                    }
                    else {
                        throw new Error("Invalid npub format");
                    }
                }
                catch (err) {
                    this.error("Invalid npub: " + err.message);
                    this.status({ fill: "red", shape: "dot", text: "Invalid npub" });
                    return;
                }
            }
            // Set up message handler on the config node's event emitter
            this.relay.on('message', (msg) => {
                if (msg.type === 'EVENT' && msg.event) {
                    const event = msg.event;
                    // Check if event matches our filter criteria
                    if (this.hexPubkey &&
                        event.pubkey === this.hexPubkey &&
                        this.eventKinds.includes(event.kind)) {
                        this.send({ payload: event });
                    }
                }
            });
            // Subscribe to events based on filter
            if (this.hexPubkey) {
                const filter = {
                    authors: [this.hexPubkey],
                    kinds: this.eventKinds
                };
                await this.relay._ws?.sendMessage(['REQ', 'sub', filter]);
            }
        }
        catch (err) {
            this.error("Failed to initialize node: " + err.message);
            this.status({ fill: "red", shape: "dot", text: "Error" });
        }
    }
    // Register the node
    RED.nodes.registerType("nostr-npub-filter", function (config) {
        // Initialize asynchronously
        initializeNode.call(this, config).catch((err) => {
            this.error("Failed to initialize node: " + err.message);
        });
    });
}