Add Business tier and Paystack prepaid billing for POS.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Http/Controllers/Pos/ProController.php

@@ -3,6 +3,9 @@
 namespace App\Http\Controllers\Pos;
 
 use App\Http\Controllers\Controller;
+use App\Models\Pos\ProSubscription;
+use App\Models\User;
+use App\Services\Pos\BillingClient;
 use App\Services\Pos\SubscriptionService;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
@@ -15,12 +18,18 @@ class ProController extends Controller
     public function index(Request $request): View
     {
         $user = ladill_account() ?? $request->user();
+        $planKey = $this->subscriptions->planKey($user);
 
         return view('pos.pro.index', [
             'subscription' => $this->subscriptions->subscriptionFor($user),
-            'isPro' => $this->subscriptions->isPro($user),
+            'planKey' => $planKey,
+            'isPro' => $planKey === ProSubscription::PLAN_PRO,
+            'isEnterprise' => $planKey === ProSubscription::PLAN_ENTERPRISE,
+            'hasPaidPlan' => $this->subscriptions->hasPaidPlan($user),
             'gatingActive' => $this->subscriptions->gatingActive(),
-            'priceMinor' => $this->subscriptions->priceMinor(),
+            'proPriceMinor' => $this->subscriptions->priceMinor(),
+            'enterprisePriceMinor' => $this->subscriptions->enterprisePriceMinor(),
+            'prepaidMonths' => (array) config('pos.prepaid_months', [6, 12, 24]),
             'currency' => (string) config('pos.pro.currency', 'GHS'),
         ]);
     }
@@ -32,6 +41,92 @@ class ProController extends Controller
         return redirect()->route('pos.pro.index')->with($ok ? 'success' : 'error', $message);
     }
 
+    public function subscribeEnterprise(Request $request): RedirectResponse
+    {
+        [$ok, $message] = $this->subscriptions->subscribeEnterprise(ladill_account() ?? $request->user());
+
+        return redirect()->route('pos.pro.index')->with($ok ? 'success' : 'error', $message);
+    }
+
+    public function subscribePrepaid(Request $request, BillingClient $billing): RedirectResponse
+    {
+        $validated = $request->validate([
+            'plan' => ['required', 'in:pro,enterprise'],
+            'months' => ['required', 'integer', 'in:6,12,24'],
+        ]);
+
+        $user = ladill_account() ?? $request->user();
+        if ($this->subscriptions->hasPaidPlan($user)) {
+            return redirect()->route('pos.pro.index')
+                ->with('success', 'You already have an active subscription.');
+        }
+
+        $plan = $validated['plan'];
+        $months = (int) $validated['months'];
+        $monthlyMinor = $plan === 'enterprise'
+            ? $this->subscriptions->enterprisePriceMinor()
+            : $this->subscriptions->priceMinor();
+
+        try {
+            $checkout = $billing->initiatePlanCheckout(
+                $user,
+                $plan,
+                $months,
+                $monthlyMinor * $months,
+                route('pos.pro.paystack.callback'),
+                ['user_id' => $user->id],
+            );
+        } catch (\Throwable) {
+            return redirect()->route('pos.pro.index')
+                ->with('error', 'Could not start Paystack checkout. Please try again.');
+        }
+
+        $url = trim((string) ($checkout['checkout_url'] ?? ''));
+        if ($url === '') {
+            return redirect()->route('pos.pro.index')
+                ->with('error', 'Paystack did not return a checkout URL.');
+        }
+
+        return redirect()->away($url);
+    }
+
+    public function paystackCallback(Request $request, BillingClient $billing): RedirectResponse
+    {
+        $reference = (string) $request->query('reference', '');
+        if ($reference === '') {
+            return redirect()->route('pos.pro.index')->with('error', 'Missing payment reference.');
+        }
+
+        try {
+            $result = $billing->verifyPlanCheckout($reference);
+        } catch (\Throwable) {
+            return redirect()->route('pos.pro.index')
+                ->with('error', 'Could not verify payment. Contact support with reference: '.$reference);
+        }
+
+        if (! ($result['paid'] ?? false)) {
+            return redirect()->route('pos.pro.index')
+                ->with('error', 'Payment was not completed.');
+        }
+
+        $metadata = (array) ($result['metadata'] ?? []);
+        $user = User::query()->find((int) ($metadata['user_id'] ?? 0));
+        $account = ladill_account() ?? $request->user();
+        if (! $user || ! $account || $user->id !== $account->id) {
+            return redirect()->route('pos.pro.index')
+                ->with('error', 'Account not found for this payment.');
+        }
+
+        $plan = (string) ($result['plan'] ?? 'pro');
+        $months = (int) ($result['months'] ?? 0);
+        $this->subscriptions->activatePrepaid($user, $plan, $months);
+
+        $label = $plan === 'enterprise' ? 'POS Business' : 'POS Pro';
+
+        return redirect()->route('pos.pro.index')
+            ->with('success', "{$label} is active for {$months} months.");
+    }
+
     public function cancel(Request $request): RedirectResponse
     {
         [$ok, $message] = $this->subscriptions->cancel(ladill_account() ?? $request->user());