<?php

namespace App\Http\Controllers;

use App\Models\PackagePurchase;
use App\Models\TenantPackage;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Stripe\Stripe;
use Stripe\Webhook;

class StripeWebhookController extends Controller
{
    public function __construct()
    {
        Stripe::setApiKey(config('services.stripe.secret'));
    }

    public function handleWebhook(Request $request)
    {
        $payload = $request->getContent();
        $sigHeader = $request->header('Stripe-Signature');
        $endpointSecret = config('services.stripe.webhook_secret');

        try {
            $event = Webhook::constructEvent($payload, $sigHeader, $endpointSecret);
        } catch (\Exception $e) {
            Log::error('Stripe webhook signature verification failed: ' . $e->getMessage());
            return response()->json(['error' => 'Invalid signature'], 400);
        }

        switch ($event['type']) {
            case 'payment_intent.succeeded':
                $paymentIntent = $event['data']['object'];
                $this->handlePaymentIntentSucceeded($paymentIntent);
                break;

            case 'invoice.payment_succeeded':
                $invoice = $event['data']['object'];
                $this->handleInvoicePaymentSucceeded($invoice);
                break;

            case 'invoice.payment_failed':
                $invoice = $event['data']['object'];
                $this->handleInvoicePaymentFailed($invoice);
                break;

            default:
                Log::info('Unhandled Stripe event type: ' . $event['type']);
        }

        return response()->json(['status' => 'success']);
    }

    private function handlePaymentIntentSucceeded($paymentIntent)
    {
        $metadata = $paymentIntent['metadata'];
        if (!$metadata['user_id'] && !$metadata['tenant_id'] || !$metadata['package_id']) {
            Log::warning('Missing metadata in Stripe payment intent: ' . $paymentIntent['id']);
            return;
        }

        $userId = $metadata['user_id'] ?? null;
        $tenantId = $metadata['tenant_id'] ?? null;
        $packageId = $metadata['package_id'];
        $type = $metadata['type'] ?? 'endcustomer_event';

        if ($userId && !$tenantId) {
            $tenant = \App\Models\Tenant::where('user_id', $userId)->first();
            if ($tenant) {
                $tenantId = $tenant->id;
            } else {
                Log::error('Tenant not found for user_id: ' . $userId);
                return;
            }
        }

        if (!$tenantId) {
            Log::error('No tenant_id found for Stripe payment intent: ' . $paymentIntent['id']);
            return;
        }

        // Create PackagePurchase for one-off payment
        \App\Models\PackagePurchase::create([
            'tenant_id' => $tenantId,
            'package_id' => $packageId,
            'provider_id' => $paymentIntent['id'],
            'price' => $paymentIntent['amount_received'] / 100,
            'type' => $type,
            'purchased_at' => now(),
            'refunded' => false,
        ]);

        if ($type === 'endcustomer_event') {
            // For event packages, assume event_id from metadata or handle separately
            // TODO: Link to specific event if provided
        }

        Log::info('Package purchase created via Stripe payment intent: ' . $paymentIntent['id'] . ' for tenant ' . $tenantId);
    }

    private function handleInvoicePaymentSucceeded($invoice)
    {
        $subscription = $invoice['subscription'];
        $metadata = $invoice['metadata'];

        if (!$metadata['user_id'] && !$metadata['tenant_id'] || !$metadata['package_id']) {
            Log::warning('Missing metadata in Stripe invoice: ' . $invoice['id']);
            return;
        }

        $userId = $metadata['user_id'] ?? null;
        $tenantId = $metadata['tenant_id'] ?? null;
        $packageId = $metadata['package_id'];

        if ($userId && !$tenantId) {
            $tenant = \App\Models\Tenant::where('user_id', $userId)->first();
            if ($tenant) {
                $tenantId = $tenant->id;
            } else {
                Log::error('Tenant not found for user_id: ' . $userId);
                return;
            }
        }

        if (!$tenantId) {
            Log::error('No tenant_id found for Stripe invoice: ' . $invoice['id']);
            return;
        }

        // Update or create TenantPackage for subscription
        \App\Models\TenantPackage::updateOrCreate(
            [
                'tenant_id' => $tenantId,
                'package_id' => $packageId,
            ],
            [
                'purchased_at' => now(),
                'expires_at' => now()->addYear(), // Renew annually
                'active' => true,
            ]
        );

        // Create or update PackagePurchase
        \App\Models\PackagePurchase::updateOrCreate(
            [
                'tenant_id' => $tenantId,
                'package_id' => $packageId,
                'provider_id' => $subscription,
            ],
            [
                'price' => $invoice['amount_paid'] / 100,
                'type' => 'reseller_subscription',
                'purchased_at' => now(),
                'refunded' => false,
            ]
        );

        Log::info('Subscription renewed via Stripe invoice: ' . $invoice['id'] . ' for tenant ' . $tenantId);
    }

    private function handleInvoicePaymentFailed($invoice)
    {
        $subscription = $invoice['subscription'];
        Log::warning('Stripe invoice payment failed: ' . $invoice['id'] . ' for subscription ' . $subscription);

        // TODO: Deactivate package or notify tenant
        // e.g., TenantPackage::where('provider_id', $subscription)->update(['active' => false]);
    }
}