120 lines
2.9 KiB
TypeScript
120 lines
2.9 KiB
TypeScript
import type { Event } from 'nostr-tools'
|
|
import { SimplePool } from 'nostr-tools'
|
|
import { createSubscription } from '@/types/nostr-tools-extended'
|
|
import { getPrimaryRelaySync } from './config'
|
|
|
|
function createZapFilters(targetPubkey: string, targetEventId: string, userPubkey: string): Array<{
|
|
kinds: number[]
|
|
'#p': string[]
|
|
'#e': string[]
|
|
authors: string[]
|
|
}> {
|
|
return [
|
|
{
|
|
kinds: [9735], // Zap receipt
|
|
'#p': [targetPubkey],
|
|
'#e': [targetEventId],
|
|
authors: [userPubkey], // Filter by the payer's pubkey
|
|
},
|
|
]
|
|
}
|
|
|
|
async function isValidZapReceipt(
|
|
params: {
|
|
event: Event
|
|
targetEventId: string
|
|
targetPubkey: string
|
|
userPubkey: string
|
|
amount: number
|
|
}
|
|
): Promise<boolean> {
|
|
// Import verification service dynamically to avoid circular dependencies
|
|
const { zapVerificationService } = await import('./zapVerification')
|
|
|
|
return zapVerificationService.verifyZapReceiptForArticle({
|
|
zapReceipt: params.event,
|
|
articleId: params.targetEventId,
|
|
articlePubkey: params.targetPubkey,
|
|
userPubkey: params.userPubkey,
|
|
expectedAmount: params.amount,
|
|
})
|
|
}
|
|
|
|
/**
|
|
* Check if user has paid for an article by looking for zap receipts
|
|
*/
|
|
function handleZapReceiptEvent(
|
|
params: {
|
|
event: Event
|
|
targetEventId: string
|
|
targetPubkey: string
|
|
userPubkey: string
|
|
amount: number
|
|
finalize: (value: boolean) => void
|
|
resolved: { current: boolean }
|
|
}
|
|
): void {
|
|
if (params.resolved.current) {
|
|
return
|
|
}
|
|
void isValidZapReceipt({
|
|
event: params.event,
|
|
targetEventId: params.targetEventId,
|
|
targetPubkey: params.targetPubkey,
|
|
userPubkey: params.userPubkey,
|
|
amount: params.amount,
|
|
}).then((isValid) => {
|
|
if (isValid) {
|
|
params.finalize(true)
|
|
}
|
|
})
|
|
}
|
|
|
|
export function checkZapReceipt(
|
|
params: {
|
|
pool: SimplePool
|
|
targetPubkey: string
|
|
targetEventId: string
|
|
amount: number
|
|
userPubkey: string
|
|
}
|
|
): Promise<boolean> {
|
|
if (!params.pool) {
|
|
return Promise.resolve(false)
|
|
}
|
|
|
|
return new Promise<boolean>((resolve) => {
|
|
let resolved = false
|
|
const relayUrl = getPrimaryRelaySync()
|
|
const sub = createSubscription(params.pool, [relayUrl], createZapFilters(params.targetPubkey, params.targetEventId, params.userPubkey))
|
|
|
|
const finalize = (value: boolean): void => {
|
|
if (resolved) {
|
|
return
|
|
}
|
|
resolved = true
|
|
sub.unsub()
|
|
resolve(value)
|
|
}
|
|
|
|
const resolvedRef = { current: resolved }
|
|
sub.on('event', (event: Event): void => {
|
|
handleZapReceiptEvent({
|
|
event,
|
|
targetEventId: params.targetEventId,
|
|
targetPubkey: params.targetPubkey,
|
|
userPubkey: params.userPubkey,
|
|
amount: params.amount,
|
|
finalize,
|
|
resolved: resolvedRef,
|
|
})
|
|
})
|
|
|
|
const end = (): void => {
|
|
finalize(false)
|
|
}
|
|
sub.on('eose', end)
|
|
setTimeout(end, 3000)
|
|
})
|
|
}
|