"use strict";
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var __importStar = (this && this.__importStar) || (function () {
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Object.defineProperty(exports, "__esModule", { value: true });
exports.revenueCatWebhook = void 0;
const functions = __importStar(require("firebase-functions"));
const entitlementLogic_1 = require("./entitlementLogic");
/**
 * RevenueCat webhook handler.
 *
 * Path: POST /revenueCatWebhook (registered as an HTTPS function)
 * Triggered by RevenueCat server-to-server events.
 *
 * Security:
 * - Real signature verification is intentionally a placeholder. Add Ed25519
 *   signature verification using process.env.REVENUECAT_SIGNING_KEY before
 *   shipping to production.
 * - The function immediately acknowledges valid-looking events so RevenueCat
 *   does not retry; downstream failures are logged and should be monitored.
 *
 * Processing:
 * - Parses the RevenueCat event payload.
 * - Writes entitlement state to Firestore at users/{userId}/entitlements.
 * - Handles TRANSFER, RENEWAL, CANCELLATION, EXPIRATION, and BILLING_ISSUE.
 */
exports.revenueCatWebhook = functions.https.onRequest(async (req, res) => {
    var _a;
    // Only accept POST requests.
    if (req.method !== 'POST') {
        res.status(405).json({ error: 'method_not_allowed' });
        return;
    }
    // TODO: verify RevenueCat webhook signature / secret before trusting payload.
    // Placeholder verification returns true for now.
    const verified = verifyRevenueCatWebhook(req);
    if (!verified) {
        res.status(401).json({ error: 'unauthorized' });
        return;
    }
    const event = (_a = req.body) === null || _a === void 0 ? void 0 : _a.event;
    if (!event || !event.type || !event.app_user_id) {
        res.status(400).json({ error: 'malformed_payload' });
        return;
    }
    // Acknowledge immediately to avoid RevenueCat retries.
    res.status(200).json({ received: true });
    try {
        await (0, entitlementLogic_1.applyEntitlementEvent)(event);
    }
    catch (err) {
        console.error('[revenueCatWebhook] entitlement sync failed:', err);
    }
});
/**
 * Placeholder webhook verification.
 * Replace with real Ed25519 signature verification before production.
 */
function verifyRevenueCatWebhook(
// eslint-disable-next-line @typescript-eslint/no-unused-vars
_req) {
    return true;
}
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