applesauce-wallet-connect/dist/helpers/request.js

NIP-47 Nostr Wallet Connect implementation for both clients and services.

import { isNIP04Encrypted } from "applesauce-core/helpers/encryption";
import { getTagValue, notifyEventUpdate } from "applesauce-core/helpers/event";
import { getHiddenContent, isHiddenContentUnlocked, setHiddenContentEncryptionMethod, unlockHiddenContent, } from "applesauce-core/helpers/hidden-content";
import { unixNow } from "applesauce-core/helpers/time";
import { nip47EncryptionMethodToNip07EncryptionMethod } from "./encryption.js";
export const WALLET_REQUEST_KIND = 23194;
// Set the encryption method to use for request kind
setHiddenContentEncryptionMethod(WALLET_REQUEST_KIND, "nip44");
/** A symbol used to cache the wallet request on the event */
export const WalletRequestSymbol = Symbol("wallet-request");
/** Checks if a kind 23194 event is locked */
export function isWalletRequestUnlocked(request) {
    // Wrap in try catch to avoid throwing validation errors
    try {
        return (WalletRequestSymbol in request || (isHiddenContentUnlocked(request) && getWalletRequest(request) !== undefined));
    }
    catch { }
    return false;
}
/** Unlocks a kind 23194 event */
export async function unlockWalletRequest(request, signer, override) {
    if (WalletRequestSymbol in request)
        return request[WalletRequestSymbol];
    // Get the encryption method from the tag or default to nip04 (pre NIP-47)
    const encryption = override ?? nip47EncryptionMethodToNip07EncryptionMethod(getWalletRequestEncryption(request));
    await unlockHiddenContent(request, signer, encryption);
    const parsed = getWalletRequest(request);
    if (!parsed)
        throw new Error("Failed to unlock wallet request");
    return parsed;
}
/** Gets the wallet request from a kind 23194 event */
export function getWalletRequest(request) {
    if (WalletRequestSymbol in request)
        return request[WalletRequestSymbol];
    const content = getHiddenContent(request);
    if (!content)
        return undefined;
    const parsed = JSON.parse(content);
    // Save the parsed content
    Reflect.set(request, WalletRequestSymbol, parsed);
    notifyEventUpdate(request);
    return parsed;
}
export function getWalletRequestServicePubkey(request) {
    return getTagValue(request, "p");
}
/** Returns the expiration timestamp from a request */
export function getWalletRequestExpiration(request) {
    const expiration = getTagValue(request, "expiration");
    return expiration ? parseInt(expiration, 10) : undefined;
}
/** Checks if a request has expired */
export function isWalletRequestExpired(request) {
    const expiration = getWalletRequestExpiration(request);
    if (!expiration)
        return false;
    return unixNow() > expiration;
}
/** Gets the encryption method used for a request */
export function getWalletRequestEncryption(request) {
    const encryption = getTagValue(request, "encryption");
    return encryption
        ? encryption
        : isNIP04Encrypted(request.content)
            ? "nip04"
            : "nip44_v2";
}
/** Checks if an event is a valid wallet request event */
export function isValidWalletRequest(request) {
    return request.kind === WALLET_REQUEST_KIND && getWalletRequestServicePubkey(request) !== undefined;
}