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| 1 | +import { createLogger } from '@sim/logger' |
| 2 | +import { sleep } from '@sim/utils/helpers' |
| 3 | +import { backoffWithJitter } from '@sim/utils/retry' |
| 4 | +import type { FreebuffConversionEvent } from '@/lib/analytics/freebuff' |
| 5 | +import { env } from '@/lib/core/config/env' |
| 6 | + |
| 7 | +const logger = createLogger('FreebuffConversions') |
| 8 | + |
| 9 | +const FREEBUFF_CONVERSIONS_URL = 'https://freebuff.com/api/advertisers/conversions' |
| 10 | +const MAX_ATTEMPTS = 4 |
| 11 | +const REQUEST_TIMEOUT_MS = 10_000 |
| 12 | + |
| 13 | +/** Mirrors the tag's own click-id check, so a tampered cookie is never forwarded. */ |
| 14 | +const CLICK_ID_SHAPE = /^bfc_[A-Za-z0-9._-]{1,508}$/ |
| 15 | + |
| 16 | +interface FreebuffConversion { |
| 17 | + clickId: string |
| 18 | + eventType: FreebuffConversionEvent |
| 19 | + /** Idempotency key, shared with the tag call for the same conversion. */ |
| 20 | + eventId: string |
| 21 | + occurredAt: Date |
| 22 | +} |
| 23 | + |
| 24 | +/** |
| 25 | + * Server-to-server conversion postback. Network failures and 5xx responses are |
| 26 | + * retried with the same `eventId` and `occurredAt`; every 4xx is terminal. A |
| 27 | + * `deduped` answer means the tag already reported it and is a success. Never |
| 28 | + * throws, so a caller can fire and forget. |
| 29 | + */ |
| 30 | +export async function reportFreebuffConversion(conversion: FreebuffConversion): Promise<void> { |
| 31 | + const apiKey = env.FREEBUFF_API_KEY |
| 32 | + if (!apiKey || !CLICK_ID_SHAPE.test(conversion.clickId)) return |
| 33 | + |
| 34 | + const body = JSON.stringify({ |
| 35 | + clickId: conversion.clickId, |
| 36 | + eventType: conversion.eventType, |
| 37 | + eventId: conversion.eventId, |
| 38 | + occurredAt: conversion.occurredAt.toISOString(), |
| 39 | + }) |
| 40 | + const context = { eventType: conversion.eventType, eventId: conversion.eventId } |
| 41 | + |
| 42 | + for (let attempt = 1; attempt <= MAX_ATTEMPTS; attempt++) { |
| 43 | + let status: number | undefined |
| 44 | + try { |
| 45 | + const response = await fetch(FREEBUFF_CONVERSIONS_URL, { |
| 46 | + method: 'POST', |
| 47 | + headers: { Authorization: `Bearer ${apiKey}`, 'Content-Type': 'application/json' }, |
| 48 | + body, |
| 49 | + signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS), |
| 50 | + }) |
| 51 | + status = response.status |
| 52 | + const result = await response.text().catch(() => '') |
| 53 | + if (response.ok) { |
| 54 | + logger.info('Freebuff conversion recorded', { ...context, result }) |
| 55 | + return |
| 56 | + } |
| 57 | + if (status < 500) { |
| 58 | + logger.warn('Freebuff conversion rejected', { ...context, status, result }) |
| 59 | + return |
| 60 | + } |
| 61 | + } catch (error) { |
| 62 | + logger.warn('Freebuff conversion request failed', { ...context, attempt, error }) |
| 63 | + } |
| 64 | + if (attempt < MAX_ATTEMPTS) await sleep(backoffWithJitter(attempt, null)) |
| 65 | + else logger.error('Freebuff conversion postback gave up', { ...context, status }) |
| 66 | + } |
| 67 | +} |
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