cyphertap/dist/stores/scan-store.js

Nostr, Lightning and Ecash on a single Button component

// src/lib/stores/scan-store.ts
import { writable } from 'svelte/store';
// Create a writable store with initial value of null
const createScanStore = () => {
    const { subscribe, set } = writable(null);
    return {
        subscribe,
        // Store a new scan result
        setResult: (type, data) => {
            //console.log(`[SCAN STORE] Setting scan result: ${type}`);
            set({ type, data });
        },
        // Clear the scan result (call this after it's been used)
        clearResult: () => {
            //console.log('[SCAN STORE] Clearing scan result');
            set(null);
        }
    };
};
// Create a single instance of the store and export it
export const scanResult = createScanStore();
// Helper function to identify the type of scanned content
export function identifyScanType(data) {
    if (!data)
        return 'unknown';
    const lowerData = data.toLowerCase();
    // Check for Lightning invoice
    if (lowerData.startsWith('lightning:') || lowerData.startsWith('lnbc')) {
        return 'lightning';
    }
    // Check for Ecash token
    if (lowerData.startsWith('cashu:') ||
        lowerData.startsWith('cashub') ||
        (!lowerData.startsWith('cashu:') && lowerData.includes('cashub')) ||
        lowerData.startsWith('ur:') ||
        lowerData.includes('ur:')) {
        return 'ecash';
    }
    // Check for Nostr private key
    if (lowerData.startsWith('nsec')) {
        return 'private-key';
    }
    // Check for device link format
    if (lowerData.startsWith('nostr:link:') ||
        (lowerData.includes('ncryptsec') && lowerData.includes('nostr:link'))) {
        return 'link';
    }
    // Unknown format
    return 'unknown';
}