import Stripe from "stripe";
const stripe = new Stripe(process.env.STRIPE_SECRET_KEY, { apiVersion: "2024-06-20" });

export async function handler(event) {
  if (event.httpMethod !== "POST") return { statusCode: 405, body: "Method Not Allowed" };
  try {
    const { priceId = process.env.PRICE_ID_ONE_TIME, quantity = 1, mode = "payment", metadata } =
      JSON.parse(event.body || "{}");

    const session = await stripe.checkout.sessions.create({
      mode,
      line_items: [{ price: priceId, quantity }],
      success_url: `${process.env.DOMAIN}/donate-success.html?session_id={CHECKOUT_SESSION_ID}`,
      cancel_url: `${process.env.DOMAIN}/donate-cancel.html`,
      billing_address_collection: "auto",
      allow_promotion_codes: true,
      metadata
    });

    return { statusCode: 200, body: JSON.stringify({ url: session.url }) };
  } catch (err) {
    return { statusCode: 500, body: JSON.stringify({ error: err.message }) };
  }
}