58 lines
2.1 KiB
TypeScript
58 lines
2.1 KiB
TypeScript
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// PayPal REST API client — OAuth2 client-credentials + a thin fetch helper.
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//
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// Enabled only when PAYPAL_CLIENT_ID and PAYPAL_SECRET are set (mirrors the
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// gating used for the other optional integrations). PAYPAL_ENVIRONMENT selects
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// the sandbox (default) or live host.
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const ENVIRONMENT = process.env.PAYPAL_ENVIRONMENT === "live" ? "live" : "sandbox"
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const BASE_URL =
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ENVIRONMENT === "live" ? "https://api-m.paypal.com" : "https://api-m.sandbox.paypal.com"
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export function paypalConfigured(): boolean {
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return Boolean(process.env.PAYPAL_CLIENT_ID && process.env.PAYPAL_SECRET)
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}
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export function paypalEnvironment() {
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return ENVIRONMENT
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}
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// Access tokens live ~9h; cache in-process (the app runs a persistent Node
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// server, so this survives across requests) and refresh a minute early.
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let cachedToken: { token: string; expiresAt: number } | null = null
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async function getAccessToken(): Promise<string> {
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if (cachedToken && cachedToken.expiresAt > Date.now() + 60_000) return cachedToken.token
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const id = process.env.PAYPAL_CLIENT_ID
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const secret = process.env.PAYPAL_SECRET
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if (!id || !secret) throw new Error("PayPal is not configured")
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const res = await fetch(`${BASE_URL}/v1/oauth2/token`, {
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method: "POST",
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headers: {
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Authorization: `Basic ${Buffer.from(`${id}:${secret}`).toString("base64")}`,
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"Content-Type": "application/x-www-form-urlencoded",
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},
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body: "grant_type=client_credentials",
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})
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if (!res.ok) throw new Error(`PayPal auth failed: ${res.status} ${await res.text().catch(() => "")}`)
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const json = (await res.json()) as { access_token: string; expires_in: number }
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cachedToken = { token: json.access_token, expiresAt: Date.now() + json.expires_in * 1000 }
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return cachedToken.token
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}
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/** Authenticated fetch against the PayPal REST API. Path is relative (e.g. "/v1/..."). */
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export async function paypalFetch(path: string, init: RequestInit = {}): Promise<Response> {
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const token = await getAccessToken()
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return fetch(`${BASE_URL}${path}`, {
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...init,
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headers: {
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Authorization: `Bearer ${token}`,
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"Content-Type": "application/json",
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...(init.headers ?? {}),
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},
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})
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}
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