Free Trial System

1import {
2  isOnTrial,
3  getTrialDaysRemaining,
4  hasTrialExpired,
5  hasUsedTrial
6} from "@/lib/trial";
7
8// Check if user is currently on trial
9const onTrial = isOnTrial(user.trialEndsAt);
10
11// Get days remaining (0 if expired)
12const daysLeft = getTrialDaysRemaining(user.trialEndsAt);
13
14// Check if trial has expired
15const expired = hasTrialExpired(user.trialEndsAt);
16
17// Check if user already used their trial (prevents abuse)
18const usedTrial = hasUsedTrial(user);

1// In your API route
2import { auth } from "@/lib/auth";
3import { hasTrialExpired } from "@/lib/trial";
4
5export async function GET() {
6  const session = await auth();
7
8  if (!session?.user) {
9    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
10  }
11
12  // Check if user has active subscription OR valid trial
13  const user = await prisma.user.findUnique({
14    where: { id: session.user.id },
15    select: { tier: true, trialEndsAt: true },
16  });
17
18  const hasAccess =
19    user.tier !== "free" || // Paid user
20    (user.trialEndsAt && !hasTrialExpired(user.trialEndsAt)); // Valid trial
21
22  if (!hasAccess) {
23    return NextResponse.json(
24      { error: "Please subscribe to access this feature" },
25      { status: 403 }
26    );
27  }
28
29  // User has access - continue with premium feature
30  return NextResponse.json({ data: "..." });
31}

1import { TrialBanner } from "@/components/billing/trial-banner";
2
3export default function DashboardLayout({ children }) {
4  return (
5    <div>
6      <TrialBanner />
7      <main>{children}</main>
8    </div>
9  );
10}

1// Create subscription with trial period
2const subscription = await stripe.subscriptions.create({
3  customer: customerId,
4  items: [{ price: priceId }],
5  trial_period_days: config.features.trialDays, // e.g., 14
6
7  // Optional: Don't charge if trial ends and card fails
8  payment_settings: {
9    save_default_payment_method: "on_subscription",
10  },
11});