create invoice controller

app/Http/Controllers/InvoiceController.php

@@ -3,6 +3,13 @@
 namespace App\Http\Controllers;
 
 use Illuminate\Http\Request;
+use Illuminate\Routing\ResponseFactory;
+use Illuminate\Support\MessageBag;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Validator;
+use Carbon\Carbon;
+use Illuminate\Database\Eloquent\Model;
+use App\Booking;
 
 class InvoiceController extends Controller
 {
@@ -13,7 +20,93 @@ class InvoiceController extends Controller
 
     public function create(Request $request, $id)
     {
+        $user = $request->user();
 
+        // validate $id
+
+        $validatedData = $request->validate([
+            'address' => 'required',
+            'buyer_company' => 'required',
+            'contact_no' => 'required',
+            'marking' => 'required',
+            'lines.*.order' => 'required|numeric',
+            'lines.*.stock_code' => 'required',
+            'lines.*.description' => 'required',
+            'lines.*.quantity' => 'required|numeric',
+            'lines.*.unit_price_rm' => 'required|numeric',
+            'lines.*.unit_price_rmb' => '',
+            'lines.*.total' => 'required|numeric',
+        ]);
+        
+        // booking_id belongs to user
+        $booking = Booking::where('id', $id)->first();
+        if (!$booking) {
+            return response()->json(['message' => 'Unable to find booking'], 403);
+        }
+
+        // user_id in booking does not match
+        if ($booking->user_id !== $user->id) {
+            return response()->json([
+                'message' => 'Booking does not belongs to you'
+            ], 403);
+        }
+
+        // Amount match with total
+        $subtotalArray = array_map(
+            function ($line) { return $line['total']; },
+            $validatedData['lines']
+        );
+        $total = array_reduce($subtotalArray, function ($v1, $v2) {
+            return $v1 + $v2;
+        });
+
+        if ($total !== $booking->amount) {
+            return response()->json([
+                'message' => 'Booking amount expected is '.$booking->amount.'. Your Invoice amount is $total.'
+            ], 400);
+        }
+
+        // Change Status to submitted
+
+        // Write to database if does not exist
+        $exist = DB::table('invoices')->where('booking_id', '=', $id)->first();
+        if ($exist) {
+            return response()
+                    ->json(['message' => 'Invoice exist. Cannot create duplicate invoice. Try edit.'], 400);
+        }
+
+        // Generate PO Number - po20200810-001(PO Format)
+        $dt = Carbon::now();
+        $po_number = 'po'.$dt->year.$dt->month.$dt->day.'-'.$id;
+
+        // Insert Invoice into database
+        $invoice = DB::table('invoices')->insertGetId([
+            'amount' => $total,
+            'booking_id' => $id,
+            'buyer_company' => $validatedData['buyer_company'],
+            'address' => $validatedData['address'],
+            'contact_no' => $validatedData['contact_no'],
+            'po_number' => $po_number
+        ]);
+
+        if (!$invoice) {
+            return response()
+                    ->json(['message' => 'Unable to Save Data'], 500)
+        }
+
+        // Insert invoice_id into lines
+        foreach( $validatedData['lines'] as $key => $line) {
+            $validatedData['lines'][$key]['invoice_id'] = $invoice;
+        }
+        unset($line);
+
+        $lines = DB::table('invoice_details')->insert($validatedData['lines']);
+
+        if($lines) {
+            return response(201);
+        } else {
+            return response(500);
+        }
     }
 
     public function edit(Request $request, $id)