Added security customizations: bet controller and hashing

app/Helpers/SecurityHelper.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace App\Helpers;
+
+use Illuminate\Support\Facades\Hash;
+
+class SecurityHelper
+{
+    public static function generateBetHash($userId, $amount, $gameId)
+    {
+        return Hash::make($userId . $amount . $gameId . now()->timestamp);
+    }
+}

app/Http/Controllers/Api/BetController.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Helpers\SecurityHelper;
+use App\Http\Controllers\Controller;
+use App\Models\Game;
+use App\Models\Transaction;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+
+class BetController extends Controller
+{
+    public function placeBet(Request $request)
+    {
+        $validated = $request->validate([
+            'game_id' => 'required|exists:games,id',
+            'amount' => 'required|numeric|min:0.01',
+        ]);
+
+        DB::beginTransaction();
+        try {
+            $user = auth()->user();
+            if ($user->balance < $validated['amount']) {
+                abort(400, 'Insufficient balance');
+            }
+
+            $hash = SecurityHelper::generateBetHash($user->id, $validated['amount'], $validated['game_id']);
+            $game = Game::find($validated['game_id']);
+            $win = random_int(0, 100) < $game->win_probability;
+            $payout = $win ? $validated['amount'] * 2 : -$validated['amount'];
+
+            $user->balance += $payout;
+            $user->save();
+
+            Transaction::create([
+                'user_id' => $user->id,
+                'type' => $win ? 'win' : 'loss',
+                'amount' => abs($payout),
+                'description' => "Bet hash: $hash",
+            ]);
+
+            DB::commit();
+
+            return response()->json([
+                'success' => true,
+                'win' => $win,
+                'balance' => $user->balance,
+                'hash' => $hash,
+            ]);
+        } catch (\Exception $e) {
+            DB::rollback();
+            abort(500, $e->getMessage());
+        }
+    }
+}