<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use App\Models\EventPurchase;
use App\Models\Tenant;

class PayPalWebhookController extends Controller
{
    public function handle(Request $request)
    {
        $input = $request->all();
        $ipnMessage = $input['ipn_track_id'] ?? null;
        $payerEmail = $input['payer_email'] ?? null;
        $paymentStatus = $input['payment_status'] ?? null;
        $mcGross = $input['mc_gross'] ?? 0;
        $packageId = $input['custom'] ?? null;

        if ($paymentStatus === 'Completed' && $mcGross > 0) {
            // Verify IPN with PayPal (simplified; use SDK for full verification)
            // $verified = $this->verifyIPN($input);

            // Find or create tenant (for public checkout, perhaps create new or use session)
            // For now, assume tenant_id from custom or session
            $tenantId = $packageId ? Tenant::where('slug', $packageId)->first()->id ?? 1 : 1;

            // Create purchase and increment credits
            $purchase = EventPurchase::create([
                'tenant_id' => $tenantId, // Implement tenant resolution
                'events_purchased' => $mcGross / 49, // Example: 49€ per event credit
                'amount' => $mcGross,
                'currency' => $input['mc_currency'] ?? 'EUR',
                'provider' => 'paypal',
                'external_receipt_id' => $ipnMessage,
                'status' => 'completed',
                'purchased_at' => now(),
            ]);

            $tenant = Tenant::find($tenantId);
            $tenant->incrementCredits($purchase->events_purchased, 'paypal_purchase', 'PayPal IPN', $purchase->id);

            Log::info('PayPal IPN processed', $input);
        }

        return response('OK', 200);
    }

    private function verifyIPN($input)
    {
        // Use PayPal SDK to verify
        // Return true/false
        return true; // Placeholder
    }
}