97 lines
2.5 KiB
JavaScript
97 lines
2.5 KiB
JavaScript
import { Relay } from '@/lib/nostr'
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import { parseNwcUrl } from '@/lib/url'
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import { nwcSchema } from '@/lib/validate'
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import { finalizeEvent, nip04, verifyEvent } from 'nostr-tools'
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export const name = 'nwc'
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export const fields = [
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{
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name: 'nwcUrl',
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label: 'connection',
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type: 'password',
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optional: 'for sending',
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clientOnly: true,
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editable: false
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},
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{
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name: 'nwcUrlRecv',
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label: 'connection',
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type: 'password',
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optional: 'for receiving',
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serverOnly: true,
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editable: false
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}
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]
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export const card = {
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title: 'NWC',
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subtitle: 'use Nostr Wallet Connect for payments',
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badges: ['send & receive', 'budgetable']
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}
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export const fieldValidation = nwcSchema
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export const walletType = 'NWC'
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export const walletField = 'walletNWC'
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export async function nwcCall ({ nwcUrl, method, params }, { logger, timeout } = {}) {
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const { relayUrl, walletPubkey, secret } = parseNwcUrl(nwcUrl)
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const relay = await Relay.connect(relayUrl, { timeout })
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logger?.ok(`connected to ${relayUrl}`)
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try {
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const payload = { method, params }
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const encrypted = await nip04.encrypt(secret, walletPubkey, JSON.stringify(payload))
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const request = finalizeEvent({
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kind: 23194,
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created_at: Math.floor(Date.now() / 1000),
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tags: [['p', walletPubkey]],
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content: encrypted
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}, secret)
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// we need to subscribe to the response before publishing the request
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// since NWC events are ephemeral (20000 <= kind < 30000)
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const subscription = relay.fetch([{
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kinds: [23195],
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authors: [walletPubkey],
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'#e': [request.id]
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}], { timeout })
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await relay.publish(request, { timeout })
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logger?.info(`published ${method} request`)
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logger?.info('waiting for response ...')
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const [response] = await subscription
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if (!response) {
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throw new Error('no response')
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}
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logger?.ok('response received')
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if (!verifyEvent(response)) throw new Error('invalid response: failed to verify')
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const decrypted = await nip04.decrypt(secret, walletPubkey, response.content)
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const content = JSON.parse(decrypted)
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if (content.error) throw new Error(content.error.message)
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if (content.result) return content.result
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throw new Error('invalid response: missing error or result')
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} finally {
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relay?.close()
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logger?.info(`closed connection to ${relayUrl}`)
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}
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}
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export async function supportedMethods (nwcUrl, { logger, timeout } = {}) {
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const result = await nwcCall({ nwcUrl, method: 'get_info' }, { logger, timeout })
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return result.methods
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}
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