portal-api/app/Http/Controllers/admin/CouponController.php

<?php

namespace App\Http\Controllers\admin;

use App\Http\Controllers\Controller;
use App\Http\Requests\CouponRequest;
use App\Models\Discount;
use App\Repositories\Discount\DiscountRepositoryInterface;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Contracts\View\Factory;
use Illuminate\Contracts\View\View;
use Illuminate\Http\Request;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Validator;

class CouponController extends Controller
{
    public function __construct(
        public DiscountRepositoryInterface $discountRepository
    ) {}

    public function index(Request $request)
    {
        $title = "List Coupon";

        $coupons = $this->discountRepository->filter($request->merge(['page' => $request->query('page') ?? 1])->all());

        return view("administrator.pages.coupon.index", compact('title', 'coupons'));
    }
    public function create()
    {
        $title = "Create new Coupon";

        return view("administrator.pages.coupon.add", compact('title'));
    }
    public function store(CouponRequest $request)
    {

        $request->validated();

        $isExits = $this->discountRepository->findBy('code', $request->code);

        if ($isExits) {
            return back()->withInput()->withErrors('Coupon code already exists');
        }
        if (Carbon::createFromFormat('d/m/Y', $request->start)->timestamp > Carbon::createFromFormat('d/m/Y', $request->end)->timestamp) {
            return back()->withInput()->withErrors('Coupon code expiration date is invalid');
        }

        if (Carbon::createFromFormat('d/m/Y', $request->end)->timestamp < Carbon::now()->timestamp) {

            return back()->withInput()->withErrors('Coupon code expiration date is invalid');
        }

        DB::beginTransaction();
        try {
            $data = $request->all();
            $data['start'] = Carbon::createFromFormat('d/m/Y', $request->start)->timestamp;
            $data['end'] = Carbon::createFromFormat('d/m/Y', $request->end)->timestamp;
            $this->discountRepository->create($data);
            DB::commit();
        } catch (\Exception $error) {
            DB::rollBack();
            return back()->withInput()->withErrors($error->getMessage());
        }

        return redirect()->route('coupon.index')->with('success', 'Added successfully');
    }
    public function edit(int $id = 0)
    {
        $coupon = $this->discountRepository->find($id);

        if (! $coupon) {
            return back()->withErrors("Invalid request");
        }

        $title = "Edit coupon #" . $coupon->code;

        return view("administrator.pages.coupon.edit", compact('title', 'coupon'));
    }

    public function update(int $id = 0, CouponRequest $request)
    {
        $coupon = $this->discountRepository->find($id);

        if (! $coupon) {
            return back()->withErrors("Invalid request");
        }
        $request->validated();
        if ($request->code !== $coupon->code) {

            $isExits = $this->discountRepository->findBy('code', $request->code);
            if ($isExits) {
                return back()->withInput()->withErrors('Coupon code already exists');
            }
        }

        if (Carbon::createFromFormat('d/m/Y', $request->start)->timestamp > Carbon::createFromFormat('d/m/Y', $request->end)->timestamp) {
            return back()->withInput()->withErrors('Coupon code expiration date is invalid');
        }

        if (Carbon::createFromFormat('d/m/Y', $request->end)->timestamp < Carbon::now()->timestamp) {

            return back()->withInput()->withErrors('Coupon code expiration date is invalid');
        }
        DB::beginTransaction();
        try {
            $data = $request->all();
            $data['start'] = Carbon::createFromFormat('d/m/Y', $request->start)->timestamp;
            $data['end'] = Carbon::createFromFormat('d/m/Y', $request->end)->timestamp;
            $this->discountRepository->update($id,$data);
            DB::commit();
        } catch (\Exception $error) {
            DB::rollBack();
            return back()->withInput()->withErrors($error->getMessage());
        }

        return redirect()->route('coupon.index')->with('success', 'Updated successfully');
    }
    public function destroy(int $id = 0)
    {
        $coupon = $this->discountRepository->find($id);

        if (! $coupon) {
            return back()->withErrors("Invalid request");
        }
        DB::beginTransaction();
        try {
            $this->discountRepository->delete($id);
            DB::commit();
        } catch (\Exception $error) {
            DB::rollBack();
            return back()->withInput()->withErrors($error->getMessage());
        }

        return back()->with('success', 'Deleted successfully');
    }
}