webstatement/app/Http/Controllers/CustomerController.php

<?php

    namespace Modules\Webstatement\Http\Controllers;

    use App\Http\Controllers\Controller;
    use Exception;
    use Illuminate\Http\Request;
    use Maatwebsite\Excel\Facades\Excel;
    use Modules\Basicdata\Models\Branch;
    use Modules\Webstatement\Exports\CustomerExport;
    use Modules\Webstatement\Http\Requests\CustomerRequest;
    use Modules\Webstatement\Models\Customer;

    class CustomerController extends Controller
    {
        public $user;

        /**
         * Display a listing of the resource.
         */
        public function index()
        {
            $branches = Branch::all(); // Fetch all branches for the dropdown
            return view('webstatement::customer.index', compact('branches'));
        }

        public function store(CustomerRequest $request)
        {
            $validate = $request->validated();

            if ($validate) {
                try {
                    // Save to database
                    Customer::create($validate);
                    return redirect()
                        ->route('customer.index')
                        ->with('success', 'Customer created successfully');
                } catch (Exception $e) {
                    return redirect()
                        ->route('customer.create')
                        ->with('error', 'Failed to create customer');
                }
            }
        }

        public function create()
        {
            $branches = Branch::all(); // Fetch all branches for the dropdown
            return view('webstatement::customer.create', compact('branches'));
        }

        public function edit($id)
        {
            $customer = Customer::find($id);
            $branches = Branch::all(); // Fetch all branches for the dropdown
            return view('webstatement::customer.create', compact('customer', 'branches'));
        }

        public function update(CustomerRequest $request, $id)
        {
            $validate = $request->validated();

            if ($validate) {
                try {
                    // Update in database
                    $customer = Customer::find($id);
                    $customer->update($validate);
                    return redirect()
                        ->route('customer.index')
                        ->with('success', 'Customer updated successfully');
                } catch (Exception $e) {
                    return redirect()
                        ->route('customer.edit', $id)
                        ->with('error', 'Failed to update customer');
                }
            }
        }

        public function destroy($id)
        {
            try {
                // Delete from database
                $customer = Customer::find($id);
                $customer->delete();

                echo json_encode(['success' => true, 'message' => 'Customer deleted successfully']);
            } catch (Exception $e) {
                echo json_encode(['success' => false, 'message' => 'Failed to delete customer']);
            }
        }

        public function dataForDatatables(Request $request)
        {
            // Check user permissions
            if (is_null($this->user) || !$this->user->can('customer.view')) {
                //abort(403, 'Sorry! You are not allowed to view customers.');
            }

            // Retrieve data from the database
            $query = Customer::query();

            // Apply search filter if provided
            if ($request->has('search') && !empty($request->get('search'))) {
                $search  = $request->get('search');
                $search_ = json_decode($search);

                if (isset($search_->search)) {
                    $query->where(function ($q) use ($search_) {
                        $q->where('customer_code', 'LIKE', "%$search_->search%");
                        $q->orWhere('name', 'LIKE', "%$search_->search%");
                        $q->orWhere('address', 'LIKE', "%$search_->search%");
                        $q->orWhere('branch_code', 'LIKE', "%$search_->search%");
                        $q->orWhereRelation('branch', 'name', 'LIKE', "%$search_->search%");
                        $q->orWhere('date_of_birth', 'LIKE', "%$search_->search%");
                        $q->orWhere('email', 'LIKE', "%$search_->search%");
                    });
                }

                if (isset($search_->branch_code)) {
                    $query->whereHas('branch', function ($q) use ($search_) {
                        $q->where('id', $search_->branch_code);
                    });
                }
            }

            // Apply sorting if provided
            if ($request->has('sortOrder') && !empty($request->get('sortOrder'))) {
                $order  = $request->get('sortOrder');
                $column = $request->get('sortField');
                $query->orderBy($column, $order);
            }

            // Get the total count of records
            $totalRecords = $query->count();

            // Apply pagination if provided
            if ($request->has('page') && $request->has('size')) {
                $page   = $request->get('page');
                $size   = $request->get('size');
                $offset = ($page - 1) * $size; // Calculate the offset

                $query->skip($offset)->take($size);
            }

            // Get the filtered count of records
            $filteredRecords = $query->count();

            // Get the data for the current page
            $data = $query->with('branch')->get();

            // Calculate the page count
            $pageCount = ceil($totalRecords / $request->get('size'));

            // Calculate the current page number
            $currentPage = 0 + 1;

            // Return the response data as a JSON object
            return response()->json([
                'draw'            => $request->get('draw'),
                'recordsTotal'    => $totalRecords,
                'recordsFiltered' => $filteredRecords,
                'pageCount'       => $pageCount,
                'page'            => $currentPage,
                'totalCount'      => $totalRecords,
                'data'            => $data,
            ]);
        }

        public function export()
        {
            return Excel::download(new CustomerExport, 'customer.xlsx');
        }

        public function search(Request $request)
        {
            $query = $request->input('query');

            $customers = Customer::where('name', 'like', "%{$query}%")
                                 ->orWhere('email', 'like', "%{$query}%")
                                 ->limit(10)
                                 ->get(['id', 'name', 'email']);

            return response()->json($customers);
        }
    }