<?php

namespace App\Http\Controllers;

use App\Models\Car;
use App\Models\Customer;
use App\Models\Rental;
use App\Models\Payment;
use Illuminate\Http\Request;
use Carbon\Carbon;

class RentalController extends Controller
{
    public function index()
    {
        $rentals = Rental::with(['car', 'customer'])->get();
        return view('rentals.index', compact('rentals'));
    }

    public function create()
    {
        $cars = Car::where('status', 'available')->get();
        $customers = Customer::where('status', 'active')->get();
        return view('rentals.create', compact('cars', 'customers'));
    }

    public function store(Request $request)
    {
        $request->validate([
            'car_id' => 'required',
            'customer_id' => 'required',
            'rental_type' => 'required',
            'start_date' => 'required|date',
            'pickup_time' => 'nullable',
            'end_date' => 'required|date|after:start_date',
            'return_time' => 'nullable',
            'total_amount' => 'required|numeric',
            'advance_payment' => 'nullable|numeric'
        ]);

        $rental = Rental::create($request->all());
        
        // Update car status
        Car::find($request->car_id)->update(['status' => 'rented']);
        
        // Create payment if advance is paid
        if ($request->advance_payment > 0) {
            Payment::create([
                'rental_id' => $rental->id,
                'amount' => $request->advance_payment,
                'method' => 'cash',
                'status' => 'completed'
            ]);
        }
        
        return redirect()->route('rentals.index')->with('success', 'Rental created successfully!');
    }

    public function show(Rental $rental)
    {
        $rental->load(['car', 'customer', 'payments']);
        return view('rentals.show', compact('rental'));
    }

    public function edit(Rental $rental)
    {
        $cars = Car::all();
        $customers = Customer::all();
        return view('rentals.edit', compact('rental', 'cars', 'customers'));
    }

    public function update(Request $request, Rental $rental)
    {
        $request->validate([
            'car_id' => 'required',
            'customer_id' => 'required',
            'rental_type' => 'required',
            'start_date' => 'required|date',
            'end_date' => 'required|date|after:start_date',
            'total_amount' => 'required|numeric'
        ]);

        $rental->update($request->all());
        return redirect()->route('rentals.index')->with('success', 'Rental updated successfully!');
    }

    public function destroy(Rental $rental)
    {
        // Reset car status
        Car::find($rental->car_id)->update(['status' => 'available']);
        
        $rental->delete();
        return redirect()->route('rentals.index')->with('success', 'Rental deleted successfully!');
    }

    public function updateStatus(Request $request, Rental $rental, $status)
    {
        $rental->update(['status' => $status]);
        
        if ($status == 'completed' || $status == 'cancelled') {
            Car::find($rental->car_id)->update(['status' => 'available']);
        } elseif ($status == 'active') {
            Car::find($rental->car_id)->update(['status' => 'rented']);
        }
        
        return redirect()->back()->with('success', 'Status updated!');
    }

    public function contract(Rental $rental)
    {
        $rental->load(['car', 'customer']);
        return view('contracts.rental', compact('rental'));
    }

    public function downloadContract(Rental $rental)
    {
        $rental->load(['car', 'customer']);
        $pdf = \PDF::loadView('contracts.rental', compact('rental'));
        return $pdf->download('contract-' . str_pad($rental->id, 6, '0', STR_PAD_LEFT) . '.pdf');
    }
}