wip: stripe implementation

- add model, dto

backend/.env.example

@@ -65,3 +65,6 @@ AWS_USE_PATH_STYLE_ENDPOINT=false
 VITE_APP_NAME="${APP_NAME}"
 FRONTEND_URL=http://localhost:4200
 SANCTUM_STATEFUL_DOMAINS=localhost:4200
+
+STRIPE_SECRET_KEY=sk_test_51TCvFrJG0RVtUg4VTqHZC2szosam9Mf0Nq0Sh71tdIKdld5DnOUhUl4VvFBZVRWPM9G5hLPNVmH8YNXqm2R6fR5U00fsEsLb1d
+STRIPE_WEBHOOK_KEY=

backend/app/Data/OrderCreatedResponseDTO.php

@@ -5,7 +5,7 @@
 use App\Contracts\OutputDataTransferObject;
 use Illuminate\Database\Eloquent\Model;
 
-final readonly class OrderResponeDTO implements OutputDataTransferObject
+final readonly class OrderCreatedResponseDTO implements OutputDataTransferObject
 {
     public function __construct(
         // TODO: Define your properties here

backend/app/Data/StripeLineItemDTO.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Data;
+
+use App\Contracts\OutputDataTransferObject;
+use App\Enums\StripeCurrency;
+
+final readonly class StripeLineItemDTO implements OutputDataTransferObject
+{
+    public function __construct(
+        public StripeCurrency $currency,
+        public int $price,
+        public string $productName,
+        public string $productDescription,
+        public int $quantity
+    ) {}
+
+    /**
+     * @return array<string, int|string>
+     */
+    public function toArray(): array
+    {
+        return [
+            'price_data' => [
+                'currency' => $this->currency->value,
+                'unit_amount' => $this->price,
+                'product_data' => [
+                    'name' => $this->productName,
+                    'description' => $this->productDescription,
+                ],
+            ],
+            'quantity' => $this->quantity,
+        ];
+    }
+}

backend/app/Data/StripeSessionDataDTO.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Data;
+
+use App\Contracts\OutputDataTransferObject;
+use App\Enums\StripePaymentMode;
+
+final readonly class StripeSessionDataDTO implements OutputDataTransferObject
+{
+    /**
+     * @param  StripeLineItemDTO[]  $lineItems
+     */
+    public function __construct(
+        public array $lineItems,
+        public StripePaymentMode $mode,
+        public string $successUrl,
+        public string $cancelUrl
+    ) {}
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'line_items' => array_map(fn (StripeLineItemDTO $dto) => $dto->toArray(), $this->lineItems),
+            'mode' => $this->mode->value,
+            'success_url' => $this->successUrl,
+            'cancel_url' => $this->cancelUrl,
+        ];
+    }
+}

backend/app/Enums/StripeCurrency.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Enums;
+
+enum StripeCurrency: string
+{
+    case INR = 'inr';
+    case USD = 'usd';
+}

backend/app/Enums/StripePaymentMode.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Enums;
+
+enum StripePaymentMode: string
+{
+    case Payment = 'payment';
+}

backend/app/Models/Order.php

@@ -25,4 +25,9 @@ public function cart(): HasOne
     {
         return $this->hasOne(Cart::class);
     }
+
+    public function stripeSession(): HasOne
+    {
+        return $this->hasOne(StripeSession::class);
+    }
 }

backend/app/Models/StripeSession.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+
+class StripeSession extends Model
+{
+    public $fillable = ['session_id', 'order_id'];
+
+    public function order(): HasOne
+    {
+        return $this->hasOne(Order::class);
+    }
+}

backend/config/services.php

@@ -35,4 +35,8 @@
         ],
     ],
 
+    'stripe' => [
+        'secret' => env('STRIPE_SECRET_KEY'),
+        'webhook' => env('STRIPE_WEBHOOK_KEY'),
+    ],
 ];

backend/database/migrations/2026_03_20_104918_create_stripe_sessions_table.php

@@ -0,0 +1,32 @@
+<?php
+
+use App\Models\Order;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('stripe_sessions', function (Blueprint $table) {
+            $table->id();
+            $table->string('session_id');
+            $table->foreignIdFor(Order::class)
+                ->constrained()
+                ->cascadeOnDelete();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('stripe_sessions');
+    }
+};