fix: refactor code to group into folder

- implement stripe checkout gateway
- add payment gateway factory and service

.ai/mcp/mcp.json

@@ -0,0 +1,12 @@
+{
+  "mcpServers": {
+    "angular-cli": {
+      "command": "npx",
+      "args": [
+        "-y",
+        "@angular/cli",
+        "mcp"
+      ]
+    }
+  }
+}

.gitignore

@@ -38,6 +38,8 @@ yarn-error.log
 testem.log
 /typings
 __screenshots__/
+*.cache
+.php-cs-fixer.dist.php
 
 # System files
 .DS_Store

.phpactor.json

@@ -0,0 +1,3 @@
+{
+  "indexer.exclude_patterns": ["/node_modules/**/*", "/backend/**/*"]
+}

.rgignore

@@ -0,0 +1 @@
+backend/

angular.json

@@ -2,7 +2,8 @@
   "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
   "version": 1,
   "cli": {
-    "packageManager": "npm"
+    "packageManager": "npm",
+    "analytics": false
   },
   "newProjectRoot": "projects",
   "projects": {

backend/.env.example

@@ -31,7 +31,7 @@ SESSION_DRIVER=database
 SESSION_LIFETIME=120
 SESSION_ENCRYPT=false
 SESSION_PATH=/
-SESSION_DOMAIN=null
+SESSION_DOMAIN=localhost
 
 BROADCAST_CONNECTION=log
 FILESYSTEM_DISK=local
@@ -64,3 +64,7 @@ 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/.gitignore

@@ -22,3 +22,4 @@
 Homestead.json
 Homestead.yaml
 Thumbs.db
+laradumps.yaml

backend/_ide_helper_models.php

@@ -0,0 +1,307 @@
+<?php
+
+// @formatter:off
+// phpcs:ignoreFile
+/**
+ * A helper file for your Eloquent Models
+ * Copy the phpDocs from this file to the correct Model,
+ * And remove them from this file, to prevent double declarations.
+ *
+ * @author Barry vd. Heuvel <barryvdh@gmail.com>
+ */
+
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property string $first_name
+ * @property string $last_name
+ * @property string $street
+ * @property string $city
+ * @property string $state
+ * @property string $pin
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\User> $users
+ * @property-read int|null $users_count
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereCity($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereFirstName($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereLastName($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address wherePin($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereState($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereStreet($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Address whereUpdatedAt($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperAddress {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property int $user_id
+ * @property \App\Enums\Cart\CartStatus $status
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property-read \App\Models\Order|null $order
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Product> $products
+ * @property-read int|null $products_count
+ * @property-read \App\Models\User|null $user
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart active()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart whereStatus($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart whereUpdatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart whereUserId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Cart withProducts()
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperCart {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property int $user_id
+ * @property int $cart_id
+ * @property string $status
+ * @property string $shipping_first_name
+ * @property string $shipping_last_name
+ * @property string $shipping_street
+ * @property string $shipping_city
+ * @property string $shipping_state
+ * @property string $shipping_pin
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property-read \App\Models\Cart $cart
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Payment> $payments
+ * @property-read int|null $payments_count
+ * @property-read \App\Models\StripeSession|null $stripeSession
+ * @property-read mixed $total_amount
+ * @property-read \App\Models\User $user
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereCartId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereShippingCity($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereShippingFirstName($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereShippingLastName($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereShippingPin($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereShippingState($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereShippingStreet($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereStatus($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereUpdatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Order whereUserId($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperOrder {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property int $order_id
+ * @property string $transaction_id
+ * @property int $amount
+ * @property string $currency
+ * @property string $payment_method
+ * @property int $payment_status_id
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property-read \App\Models\Order|null $order
+ * @property-read \App\Models\PaymentStatus|null $paymentStatus
+ * @property-read mixed $status
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment whereAmount($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment whereCurrency($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment whereOrderId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment wherePaymentMethod($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment wherePaymentStatusId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment whereTransactionId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Payment whereUpdatedAt($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperPayment {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property string $name
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|PaymentStatus newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|PaymentStatus newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|PaymentStatus query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|PaymentStatus whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|PaymentStatus whereName($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperPaymentStatus {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property string $title
+ * @property string|null $slug
+ * @property string $description
+ * @property numeric $actual_price
+ * @property numeric $list_price
+ * @property int $product_category_id
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property bool $is_active
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Cart> $carts
+ * @property-read int|null $carts_count
+ * @property-read \App\Models\ProductCategory|null $category
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\User> $favoritedBy
+ * @property-read int|null $favorited_by_count
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\ProductImage> $images
+ * @property-read int|null $images_count
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product active()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereActualPrice($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereDescription($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereIsActive($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereListPrice($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereProductCategoryId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereSlug($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereTitle($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|Product whereUpdatedAt($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperProduct {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property string $name
+ * @property string $slug
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory whereName($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory whereSlug($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductCategory whereUpdatedAt($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperProductCategory {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property string $path
+ * @property int $product_id
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property-read \App\Models\Product|null $product
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage wherePath($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage whereProductId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|ProductImage whereUpdatedAt($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperProductImage {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property string $session_id
+ * @property int $order_id
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property-read \App\Models\Order|null $order
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession whereOrderId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession whereSessionId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|StripeSession whereUpdatedAt($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperStripeSession {}
+}
+
+namespace App\Models{
+/**
+ * @property int $id
+ * @property string $name
+ * @property string $email
+ * @property \Illuminate\Support\Carbon|null $email_verified_at
+ * @property string $password
+ * @property string|null $remember_token
+ * @property \Illuminate\Support\Carbon|null $created_at
+ * @property \Illuminate\Support\Carbon|null $updated_at
+ * @property string $mobile_number
+ * @property string $city
+ * @property \App\Enums\User\UserRoles $role
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Address> $addresses
+ * @property-read int|null $addresses_count
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Cart> $carts
+ * @property-read int|null $carts_count
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Product> $favoriteProducts
+ * @property-read int|null $favorite_products_count
+ * @property-read \Illuminate\Notifications\DatabaseNotificationCollection<int, \Illuminate\Notifications\DatabaseNotification> $notifications
+ * @property-read int|null $notifications_count
+ * @property-read \Illuminate\Database\Eloquent\Collection<int, \App\Models\Order> $orders
+ * @property-read int|null $orders_count
+ * @method static \Database\Factories\UserFactory factory($count = null, $state = [])
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User newModelQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User newQuery()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User query()
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereCity($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereCreatedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereEmail($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereEmailVerifiedAt($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereId($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereMobileNumber($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereName($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User wherePassword($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereRememberToken($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereRole($value)
+ * @method static \Illuminate\Database\Eloquent\Builder<static>|User whereUpdatedAt($value)
+ * @mixin \Eloquent
+ */
+	#[\AllowDynamicProperties]
+	class IdeHelperUser {}
+}
+

backend/app/Actions/Address/DeleteUserAddressAction.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Actions\Address;
+
+use App\Models\Address;
+
+final readonly class DeleteUserAddressAction
+{
+    /**
+     * Execute the action.
+     */
+    public function execute(Address $address)
+    {
+        $address->users()->detach();
+        $address->delete();
+
+        return response()->noContent();
+    }
+}

backend/app/Actions/Address/SaveUserAddressAction.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Actions\Address;
+
+use App\Data\Address\AddUserAddressRequestDTO;
+use App\Data\Address\UserAddressResponseDTO;
+use App\Models\User;
+
+final readonly class SaveUserAddressAction
+{
+    /**
+     * Execute the action.
+     */
+    public function execute(AddUserAddressRequestDTO $data, User $user)
+    {
+        return UserAddressResponseDTO::fromModel(
+            $user
+                ->addresses()
+                ->create($data->toArray())
+        );
+    }
+}

backend/app/Actions/Address/UpdateUserAddressAction.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Actions\Address;
+
+use App\Data\Address\UpdateUserAddressRequestDTO;
+use App\Data\Address\UserAddressResponseDTO;
+use App\Models\Address;
+
+final readonly class UpdateUserAddressAction
+{
+    /**
+     * Execute the action.
+     */
+    public function execute(UpdateUserAddressRequestDTO $data, Address $address)
+    {
+        $address->update($data->toArray());
+        $address->refresh();
+
+        return UserAddressResponseDTO::fromModel($address);
+    }
+}

backend/app/Actions/Cart/AddProductToCartAction.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Actions\Cart;
+
+use App\Data\Cart\AddToCartDTO;
+use App\Data\Cart\CartDTO;
+use App\Enums\Cart\CartStatus;
+use App\Models\Product;
+use App\Models\User;
+
+final readonly class AddProductToCartAction
+{
+    /**
+     * Execute the action.
+     */
+    public function execute(AddToCartDTO $cartData, User $user)
+    {
+        $cart = $user->carts()->active()->firstOrCreate([
+            'status' => CartStatus::Active,
+        ]);
+
+        $price = Product::query()->whereId($cartData->productId)->value('actual_price');
+
+        $productInCart = $cart->products()->find($cartData->productId);
+
+        if ($productInCart) {
+            $newQuantity = $productInCart->pivot->quantity + $cartData->quantity;
+
+            $cart->products()->updateExistingPivot($cartData->productId, [
+                'quantity' => $newQuantity,
+                'price' => $price,
+            ]);
+
+        } else {
+            $cart->products()->attach($cartData->productId, [
+                'quantity' => $cartData->quantity,
+                'price' => $price,
+            ]);
+        }
+
+        return CartDTO::fromModel($cart->load(['products' => function ($query) {
+            $query->withPivot('quantity', 'price');
+        }]));
+
+    }
+}

backend/app/Actions/Cart/GetActiveUserCartAction.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Actions\Cart;
+
+use App\Data\Cart\CartDTO;
+use App\Models\User;
+
+final readonly class GetActiveUserCartAction
+{
+    /**
+     * Execute the action.
+     */
+    public function execute(User $user)
+    {
+        return CartDTO::fromModel($user->carts()->active()->withProducts()->first());
+    }
+}

backend/app/Actions/Cart/MarkCartAsConvertedAction.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Actions\Cart;
+
+use App\Enums\Cart\CartStatus;
+use App\Models\Cart;
+
+final readonly class MarkCartAsConvertedAction
+{
+    /**
+     * Execute the action.
+     */
+    public function execute(Cart $cart): Cart
+    {
+        $cart->status = CartStatus::Converted;
+        $cart->save();
+
+        return $cart;
+    }
+}

backend/app/Actions/Cart/RemoveProductFromCartAction.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Actions\Cart;
+
+use App\Models\User;
+
+final readonly class RemoveProductFromCartAction
+{
+    public function __construct(private GetActiveUserCartAction $activeCartAction) {}
+
+    /**
+     * Execute the action.
+     */
+    public function execute(int $productId, User $user)
+    {
+        $cart = $user->carts()->active()->sole();
+        $cart->products()->detach($productId);
+
+        return $this->activeCartAction->execute($user);
+    }
+}

backend/app/Actions/Cart/UpdateProductInCartAction.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Actions\Cart;
+
+use App\Data\Cart\AddToCartDTO;
+use App\Data\Cart\CartDTO;
+use App\Models\User;
+use InvalidArgumentException;
+
+final readonly class UpdateProductInCartAction
+{
+    /**
+     * Execute the action.
+     *
+     * @throws InvalidArgumentException
+     */
+    public function execute(AddToCartDTO $cartData, User $user)
+    {
+        $cart = $user->carts()->active()->sole();
+
+        $productInCart = $cart->products()->find($cartData->productId);
+
+        throw_if($productInCart === null, new InvalidArgumentException('Product not found'));
+
+        $cart->products()->updateExistingPivot($cartData->productId, [
+            'quantity' => $cartData->quantity,
+        ]);
+
+        return CartDTO::fromModel($cart->load(['products' => function ($query) {
+            $query->withPivot('quantity', 'price');
+        }]));
+
+    }
+}

backend/app/Actions/Order/CreateOrderAction.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Actions\Order;
+
+use App\Data\Order\OrderRequestDTO;
+use App\Enums\Cart\CartStatus;
+use App\Exceptions\StaleCartException;
+use App\Models\Address;
+use App\Models\Cart;
+use App\Models\Order;
+use App\Models\User;
+
+final readonly class CreateOrderAction
+{
+    /**
+     * Execute the action.
+     *
+     * @throws StaleCartException
+     */
+    public function execute(OrderRequestDTO $dto, User $user): Order
+    {
+        /** @var Cart $cart */
+        $cart = $user->carts()->where('id', $dto->cartId)->sole();
+
+        if ($cart->status !== CartStatus::Active) {
+            throw new StaleCartException(userId: $user->id, cartId: $cart->id);
+        }
+
+        /** @var Address $address */
+        $address = $user->addresses()->where('id', $dto->addressId)->sole();
+
+        // Check if user has already created an order with the same cart. If yes, then take that order.
+        /** @var Order $order */
+        $order = $user->orders()->firstOrNew(['cart_id' => $cart->id]);
+
+        $order->cart_id = $cart->id;
+        $order->shipping_first_name = $address->first_name;
+        $order->shipping_last_name = $address->last_name;
+        $order->shipping_street = $address->street;
+        $order->shipping_city = $address->city;
+        $order->shipping_state = $address->state;
+        $order->shipping_pin = $address->pin;
+
+        $order->save();
+
+        return $order;
+    }
+}

backend/app/Actions/Payment/MarkPaymentAsPaidAction.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Actions\Payment;
+
+use App\Actions\Cart\MarkCartAsConvertedAction;
+use App\Enums\Payment\PaymentStatusEnum;
+use App\Models\Payment;
+use App\Models\PaymentStatus;
+use DB;
+use Log;
+use Symfony\Component\Translation\Exception\NotFoundResourceException;
+use Throwable;
+
+final readonly class MarkPaymentAsPaidAction
+{
+    public function __construct(private MarkCartAsConvertedAction $cartAsConvertedAction) {}
+
+    /**
+     * Execute the action.
+     *
+     * @throws NotFoundResourceException|Throwable
+     */
+    public function execute(Payment $payment): bool
+    {
+        try {
+
+            DB::beginTransaction();
+            // get the cart and make the status to converted
+            $cart = $payment->order->cart;
+            $this->cartAsConvertedAction->execute($cart);
+
+            $status = PaymentStatus::whereName(PaymentStatusEnum::Paid->value)->value('id');
+            if (! $status) {
+                throw new NotFoundResourceException('Paid Status not found');
+            }
+            $payment->payment_status_id = $status;
+
+            $payment->save();
+            DB::commit();
+
+            return true;
+
+        } catch (Throwable $e) {
+            Log::error('Cannot mark order payment as paid', [$e->getMessage()]);
+            DB::rollBack();
+
+            return false;
+        }
+    }
+}

backend/app/Actions/Payment/ProcessOrderPaymentAction.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Actions\Payment;
+
+use App\Data\Payment\PaymentResponseDTO;
+use App\Enums\Payment\PaymentModes;
+use App\Enums\Payment\PaymentStatusEnum;
+use App\Models\Order;
+use App\Models\PaymentStatus;
+use App\Services\Payment\PaymentGatewayFactory;
+use DB;
+use Log;
+use Throwable;
+
+final readonly class ProcessOrderPaymentAction
+{
+    public function __construct(
+        private PaymentGatewayFactory $paymentGatewayFactory,
+    ) {}
+
+    /**
+     * Execute the action.
+     */
+    public function execute(Order $order, PaymentModes $mode): PaymentResponseDTO
+    {
+        $gateway = $this->paymentGatewayFactory->make($mode);
+        try {
+            DB::beginTransaction();
+            $response = $gateway->charge($order);
+
+            if ($response->isSuccess) {
+                $order->payments()->create(
+                    [
+                        'transaction_id' => $response->transactionId,
+                        'amount' => $response->amount,
+                        'currency' => $response->currency,
+                        'payment_method' => $response->method->value,
+                        'payment_status_id' => PaymentStatus::getIdByName(PaymentStatusEnum::Unpaid->value),
+                    ]
+                );
+            }
+            DB::commit();
+
+            return $response;
+        } catch (Throwable $e) {
+            DB::rollBack();
+            Log::error('Error occurred while processing the payment.', [$e->getMessage()]);
+            abort(500, 'Something went wrong. Please try again or contact us to get in touch with our support team. ');
+        }
+    }
+}

backend/app/Actions/Product/CreateProductAction.php

@@ -1,8 +1,8 @@
 <?php
 
-namespace App\Actions;
+namespace App\Actions\Product;
 
-use App\Data\UploadImageDTO;
+use App\Data\Upload\UploadImageDTO;
 
 final readonly class CreateProductAction
 {

backend/app/Actions/Product/GetAllProductCategory.php

@@ -1,8 +1,8 @@
 <?php
 
-namespace App\Actions;
+namespace App\Actions\Product;
 
-use App\Data\ProductCategoryDTO;
+use App\Data\Product\ProductCategoryDTO;
 use App\Models\ProductCategory;
 
 final readonly class GetAllProductCategory

backend/app/Actions/Stripe/VerifyStripeSessionAction.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\Actions\Stripe;
+
+use App\Data\Payment\VerifiedCheckoutResponseDTO;
+use App\Models\User;
+use Exception;
+use Log;
+use Stripe\Exception\ApiErrorException;
+use Stripe\StripeClient;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException;
+
+final readonly class VerifyStripeSessionAction
+{
+    public function __construct(private StripeClient $stripe) {}
+
+    /**
+     * Execute the action.
+     */
+    public function execute(int $orderId, string $stripeSessionId, User $user): VerifiedCheckoutResponseDTO
+    {
+        /**
+         * Check if the order is actually made by user
+         */
+        $order = $user->orders()
+            ->whereId($orderId)
+            ->first();
+        if (! $order) {
+            throw new AccessDeniedHttpException('Order is not made by you');
+        }
+        if (! $order->stripeSession()->where('session_id', $stripeSessionId)->exists()) {
+            throw new AccessDeniedHttpException('Stripe session is not made by you');
+        }
+
+        try {
+            $session = $this->stripe->checkout->sessions->retrieve($stripeSessionId);
+        } catch (ApiErrorException $e) {
+            Log::error('Stripe api is not available: ', [$e->getMessage()]);
+            throw new ServiceUnavailableHttpException('Stripe api is not available');
+        } catch (Exception $e) {
+            throw new NotFoundHttpException('Invalid Stripe session id');
+        }
+
+        if ($session->payment_status !== 'paid' || $session->status !== 'complete') {
+            return VerifiedCheckoutResponseDTO::failure('Payment Unsuccessful');
+        }
+
+        return VerifiedCheckoutResponseDTO::success(
+            message: 'Payment Successful',
+            amount: $session->amount_total,
+            transactionId: $session->payment_intent,
+            mode: $session->payment_method_types[0],
+        );
+    }
+}

backend/app/Actions/Upload/UploadImageAction.php

@@ -1,8 +1,8 @@
 <?php
 
-namespace App\Actions;
+namespace App\Actions\Upload;
 
-use App\Data\UploadImageDTO;
+use App\Data\Upload\UploadImageDTO;
 
 final readonly class UploadImageAction
 {

backend/app/Actions/User/CreateUserAction.php

@@ -1,8 +1,8 @@
 <?php
 
-namespace App\Actions;
+namespace App\Actions\User;
 
-use App\Data\RegisterDTO;
+use App\Data\User\RegisterDTO;
 use App\Models\User;
 
 final readonly class CreateUserAction

backend/app/Console/Commands/MakeDtoCommand.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\GeneratorCommand;
+use Symfony\Component\Console\Input\InputOption;
+
+class MakeDtoCommand extends GeneratorCommand
+{
+    /**
+     * The console command name and signature.
+     *
+     * @var string
+     */
+    protected $name = 'make:dto';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Create a new Data Transfer Object class';
+
+    /**
+     * The type of class being generated.
+     *
+     * @var string
+     */
+    protected $type = 'DTO';
+
+    /**
+     * Get the stub file for the generator.
+     */
+    protected function getStub(): string
+    {
+        if ($this->option('output')) {
+            return base_path('stubs/dto.output.stub');
+        }
+
+        return base_path('stubs/dto.input.stub');
+    }
+
+    /**
+     * Get the default namespace for the class.
+     *
+     * @param  string  $rootNamespace
+     */
+    protected function getDefaultNamespace($rootNamespace): string
+    {
+        return $rootNamespace.'\Data';
+    }
+
+    /**
+     * Get the console command options.
+     */
+    protected function getOptions(): array
+    {
+        return [
+            ['input', 'i', InputOption::VALUE_NONE, 'Generate an Input DTO (default)'],
+            ['output', 'o', InputOption::VALUE_NONE, 'Generate an Output DTO'],
+        ];
+    }
+}

backend/app/Contracts/PaymentGateway.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Contracts;
+
+use App\Data\Payment\PaymentResponseDTO;
+use App\Models\Order;
+
+interface PaymentGateway
+{
+    public function charge(Order $order): PaymentResponseDTO;
+}

backend/app/Data/Address/AddUserAddressRequestDTO.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Data\Address;
+
+use App\Contracts\InputDataTransferObject;
+use Illuminate\Foundation\Http\FormRequest;
+
+final readonly class AddUserAddressRequestDTO implements InputDataTransferObject
+{
+    public function __construct(
+        public string $firstName,
+        public string $lastName,
+        public string $street,
+        public string $city,
+        public string $state,
+        public string $pinCode
+    ) {}
+
+    public static function fromRequest(FormRequest $request): InputDataTransferObject
+    {
+        return new self(
+            firstName: $request->firstName,
+            lastName: $request->lastName,
+            street: $request->street,
+            city: $request->city,
+            state: $request->state,
+            pinCode: $request->pinCode
+        );
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'first_name' => $this->firstName,
+            'last_name' => $this->lastName,
+            'street' => $this->street,
+            'city' => $this->city,
+            'state' => $this->state,
+            'pin' => $this->pinCode,
+        ];
+    }
+}

backend/app/Data/Address/UpdateUserAddressRequestDTO.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Data\Address;
+
+use App\Contracts\InputDataTransferObject;
+use Illuminate\Foundation\Http\FormRequest;
+
+final readonly class UpdateUserAddressRequestDTO implements InputDataTransferObject
+{
+    public function __construct(
+        public ?string $firstName = null,
+        public ?string $lastName = null,
+        public ?string $street = null,
+        public ?string $city = null,
+        public ?string $state = null,
+        public ?string $pinCode = null,
+    ) {}
+
+    public static function fromRequest(FormRequest $request): InputDataTransferObject
+    {
+        return new self(
+            firstName: $request->input('firstName'),
+            lastName: $request->input('lastName'),
+            street: $request->input('street'),
+            city: $request->input('city'),
+            state: $request->input('state'),
+            pinCode: $request->input('pinCode'),
+        );
+    }
+
+    /**
+     * @return array<string = null = null, mixed>
+     */
+    public function toArray(): array
+    {
+        $data = [
+            'first_name' => $this->firstName,
+            'last_name' => $this->lastName,
+            'street' => $this->street,
+            'city' => $this->city,
+            'state' => $this->state,
+            'pin' => $this->pinCode,
+        ];
+
+        return array_filter($data, fn ($value) => $value !== null);
+    }
+}

backend/app/Data/Address/UserAddressResponseDTO.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Data\Address;
+
+use App\Contracts\OutputDataTransferObject;
+use App\Models\Address;
+
+final readonly class UserAddressResponseDTO implements OutputDataTransferObject
+{
+    public function __construct(
+        public int $id,
+        public string $firstName,
+        public string $lastName,
+        public string $street,
+        public string $city,
+        public string $state,
+        public string $pinCode
+    ) {}
+
+    public static function fromModel(Address $address): OutputDataTransferObject
+    {
+        return new self(
+            id: $address->id,
+            firstName: $address->first_name,
+            lastName: $address->last_name,
+            street: $address->street,
+            city: $address->city,
+            state: $address->state,
+            pinCode: $address->pin
+        );
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'id' => $this->id,
+            'firstName' => $this->firstName,
+            'lastName' => $this->lastName,
+            'street' => $this->street,
+            'city' => $this->city,
+            'state' => $this->state,
+            'pinCode' => $this->pinCode,
+        ];
+    }
+}

backend/app/Data/Cart/AddToCartDTO.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Data\Cart;
+
+use App\Contracts\InputDataTransferObject;
+use Illuminate\Foundation\Http\FormRequest;
+
+final readonly class AddToCartDTO implements InputDataTransferObject
+{
+    public function __construct(
+        public int $productId,
+        public int $quantity
+    ) {}
+
+    public static function fromRequest(FormRequest $request): InputDataTransferObject
+    {
+        return new self(
+            productId: $request->productId,
+            quantity: $request->quantity
+        );
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'productId' => $this->productId,
+            'quantity' => $this->quantity,
+        ];
+    }
+}

backend/app/Data/Cart/CartDTO.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Data\Cart;
+
+use App\Contracts\OutputDataTransferObject;
+use App\Models\Cart;
+
+final readonly class CartDTO implements OutputDataTransferObject
+{
+    /**
+     * @param  CartItemDTO[]  $items
+     */
+    public function __construct(
+        public int $id,
+        public ?int $itemsCount = null,
+        public ?int $totalPrice = null,
+        public array $items = []
+    ) {}
+
+    public static function fromModel(Cart $cart)
+    {
+        return new self(
+            id: $cart->id,
+            itemsCount: $cart->products->count(),
+            totalPrice: $cart->products->sum(fn ($product) => $product->pivot->price * $product->pivot->quantity),
+            items: $cart->products->map(fn ($product) => new CartItemDTO(
+                id: $product->id,
+                title: $product->title,
+                quantity: $product->pivot->quantity,
+                price: $product->actual_price,
+                subtotal: $product->actual_price * $product->pivot->quantity,
+                image: $product->images->first()->path,
+            ))->toArray()
+        );
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'id' => $this->id,
+            'itemsCount' => $this->itemsCount,
+            'totalPrice' => $this->totalPrice,
+            'items' => $this->items,
+        ];
+    }
+}

backend/app/Data/Cart/CartItemDTO.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Data\Cart;
+
+use App\Contracts\OutputDataTransferObject;
+
+final readonly class CartItemDTO implements OutputDataTransferObject
+{
+    public function __construct(
+        public int $id,
+        public string $title,
+        public int $quantity,
+        public float $price,
+        public float $subtotal,
+        public string $image
+    ) {}
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'id' => $this->id,
+            'title' => $this->title,
+            'quantity' => $this->quantity,
+            'price' => $this->price,
+            'subtotal' => $this->subtotal,
+            'image' => $this->image,
+        ];
+    }
+}

backend/app/Data/Order/OrderCreatedResponseDTO.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Data\Order;
+
+use App\Contracts\OutputDataTransferObject;
+use Illuminate\Database\Eloquent\Model;
+
+final readonly class OrderCreatedResponseDTO implements OutputDataTransferObject
+{
+    public function __construct(
+        // TODO: Define your properties here
+    ) {}
+
+    public static function fromModel(Model $model): OutputDataTransferObject
+    {
+        return new self;
+        // TODO: Map model data to properties
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            // TODO: Map properties to array
+        ];
+    }
+}

backend/app/Data/Order/OrderRequestDTO.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Data\Order;
+
+use App\Contracts\InputDataTransferObject;
+use Illuminate\Foundation\Http\FormRequest;
+
+final readonly class OrderRequestDTO implements InputDataTransferObject
+{
+    public function __construct(
+        public int $cartId,
+        public string $addressId,
+    ) {}
+
+    public static function fromRequest(FormRequest $request): OrderRequestDTO
+    {
+        return new self(
+            cartId: $request->cartId,
+            addressId: $request->addressId,
+        );
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'cart_id' => $this->cartId,
+            'address_id' => $this->addressId,
+        ];
+    }
+}

backend/app/Data/Payment/PaymentResponseDTO.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace App\Data\Payment;
+
+use App\Contracts\OutputDataTransferObject;
+use App\Enums\Payment\PaymentModes;
+
+final readonly class PaymentResponseDTO implements OutputDataTransferObject
+{
+    public function __construct(
+        public bool $isSuccess,
+        public int $amount,
+        public string $currency,
+        public PaymentModes $method,
+        public ?string $transactionId = null,
+        public ?string $errorMessage = null,
+        public ?string $redirectUrl = null,
+    ) {}
+
+    public static function success(
+        string $transactionId,
+        int $amount,
+        string $currency,
+        PaymentModes $method,
+        ?string $redirectUrl = null
+    ): self {
+        return new self(
+            isSuccess: true,
+            amount: $amount,
+            currency: $currency,
+            method: $method,
+            transactionId: $transactionId,
+            redirectUrl: $redirectUrl,
+        );
+    }
+
+    public static function failure(int $amount, string $currency, PaymentModes $method, string $errorMessage): self
+    {
+        return new self(
+            isSuccess: false,
+            amount: $amount,
+            currency: $currency,
+            method: $method,
+            errorMessage: $errorMessage,
+        );
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'isSuccess' => $this->isSuccess,
+            'transactionId' => $this->transactionId,
+            'amount' => $this->amount,
+            'currency' => $this->currency,
+            'method' => $this->method,
+            'redirectUrl' => $this->redirectUrl,
+            'errorMessage' => $this->errorMessage,
+        ];
+    }
+}

backend/app/Data/Payment/VerifiedCheckoutResponseDTO.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Data\Payment;
+
+use App\Contracts\OutputDataTransferObject;
+
+final readonly class VerifiedCheckoutResponseDTO implements OutputDataTransferObject
+{
+    public function __construct(
+        public bool $isSuccess,
+        public string $message,
+        public ?int $amount = null,
+        public ?string $transactionId = null,
+        public ?string $mode = null
+    ) {}
+
+    public static function failure(string $message): VerifiedCheckoutResponseDTO
+    {
+        return new self(isSuccess: false, message: $message);
+    }
+
+    public static function success(string $message, int $amount, string $transactionId, string $mode): VerifiedCheckoutResponseDTO
+    {
+        return new self(isSuccess: true, message: $message, amount: $amount, transactionId: $transactionId,
+            mode: $mode);
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function toArray(): array
+    {
+        return [
+            'isSuccess' => $this->isSuccess,
+            'message' => $this->message,
+            'amount' => $this->amount,
+            'transactionId' => $this->transactionId,
+            'paymentMethod' => $this->mode,
+        ];
+    }
+}

backend/app/Data/Product/ProductCategoryDTO.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Data;
+namespace App\Data\Product;
 
 use App\Contracts\OutputDataTransferObject;
 use App\Models\ProductCategory;
@@ -13,6 +13,15 @@ public function __construct(
         public string $slug,
     ) {}
 
+    public static function fromModel(ProductCategory $category): self
+    {
+        return new self(
+            id: $category->id,
+            name: $category->name,
+            slug: $category->slug,
+        );
+    }
+
     /**
      * @return array<string, mixed>
      */
@@ -24,13 +33,4 @@ public function toArray(): array
             'slug' => $this->slug,
         ];
     }
-
-    public static function fromModel(ProductCategory $category): self
-    {
-        return new self(
-            id: $category->id,
-            name: $category->name,
-            slug: $category->slug,
-        );
-    }
 }

backend/app/Data/Product/ProductDTO.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Data;
+namespace App\Data\Product;
 
 use App\Contracts\OutputDataTransferObject;
 use App\Models\Product;
@@ -22,8 +22,27 @@ public function __construct(
         public array $productImages,
         public ?string $updatedAt = null,
         public ?string $createdAt = null,
+        public ?bool $isFavorite = null
     ) {}
 
+    public static function fromModel(Product $product): self
+    {
+        return new self(
+            id: $product->id,
+            title: $product->title,
+            slug: $product->slug,
+            description: $product->description,
+            actualPrice: $product->actual_price,
+            listPrice: $product->list_price,
+            category: ProductCategoryDTO::fromModel($product->category),
+            productImages: $product->images->map(fn (ProductImage $productImage) => ProductImageDTO::fromModel($productImage))->all(),
+            updatedAt: $product->updated_at,
+            createdAt: $product->created_at,
+            // this column is added by where exists query
+            isFavorite: $product->favorited_by_exists,
+        );
+    }
+
     /**
      * @return array<string, mixed>
      */
@@ -41,22 +60,7 @@ public function toArray(): array
                 $this->productImages),
             'updatedAt' => $this->updatedAt,
             'createdAt' => $this->createdAt,
+            'isFavorite' => $this->isFavorite,
         ];
     }
-
-    public static function fromModel(Product $product): self
-    {
-        return new self(
-            id: $product->id,
-            title: $product->title,
-            slug: $product->slug,
-            description: $product->description,
-            actualPrice: $product->actual_price,
-            listPrice: $product->list_price,
-            category: ProductCategoryDTO::fromModel($product->category),
-            productImages: $product->images->map(fn (ProductImage $productImage) => ProductImageDTO::fromModel($productImage))->all(),
-            updatedAt: $product->updated_at,
-            createdAt: $product->created_at,
-        );
-    }
 }

backend/app/Data/Product/ProductImageDTO.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Data;
+namespace App\Data\Product;
 
 use App\Contracts\OutputDataTransferObject;
 use App\Models\ProductImage;
@@ -13,6 +13,15 @@ public function __construct(
         public ?int $productId = null,
     ) {}
 
+    public static function fromModel(ProductImage $productImage): self
+    {
+        return new self(
+            $productImage->id,
+            $productImage->path,
+            $productImage->product_id
+        );
+    }
+
     /**
      * @return array<string, mixed>
      */
@@ -24,13 +33,4 @@ public function toArray(): array
             'productId' => $this->productId,
         ];
     }
-
-    public static function fromModel(ProductImage $productImage): self
-    {
-        return new self(
-            $productImage->id,
-            $productImage->path,
-            $productImage->product_id
-        );
-    }
 }

backend/app/Data/Stripe/StripeLineItemDTO.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Data\Stripe;
+
+use App\Contracts\OutputDataTransferObject;
+use App\Enums\Stripe\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/Stripe/StripeSessionDataDTO.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Data\Stripe;
+
+use App\Contracts\OutputDataTransferObject;
+use App\Enums\Stripe\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/Data/Upload/UploadImageDTO.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Data;
+namespace App\Data\Upload;
 
 use App\Models\Product;
 use Illuminate\Http\UploadedFile;

backend/app/Data/User/RegisterDTO.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Data;
+namespace App\Data\User;
 
 use App\Contracts\InputDataTransferObject;
 use Illuminate\Foundation\Http\FormRequest;

backend/app/Data/User/UserDTO.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Data;
+namespace App\Data\User;
 
 use App\Contracts\OutputDataTransferObject;
 

backend/app/Enums/Cart/CartStatus.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Enums\Cart;
+
+enum CartStatus: string
+{
+    case Active = 'active'; // freshly created
+    case Converted = 'converted'; // user ordered
+    case Abandoned = 'abandoned'; // older than 24hrs
+    case Expired = 'expired'; // left for a long period
+}

backend/app/Enums/Order/OrderStatus.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Enums\Order;
+
+/**
+ * Open -> The order was placed or created. There is work to do for the order, which can include processing payment, fulfilling, or processing returns.
+ * Archived -> The order was manually or automatically archived. Usually, this means the order was fulfilled.
+ * Canceled -> The order was canceled. If a canceled order was not fully refunded, then there might be work remaining for the order.
+ */
+enum OrderStatus: string
+{
+    case Open = 'open';
+    case Archived = 'archived';
+    case Closed = 'closed';
+}

backend/app/Enums/Payment/PaymentModes.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Enums\Payment;
+
+enum PaymentModes: string
+{
+    case StripeCheckout = 'stripeCheckout';
+    case CashOnDelivery = 'cashOnDelivery';
+}

backend/app/Enums/Payment/PaymentStatusEnum.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Enums\Payment;
+
+enum PaymentStatusEnum: string
+{
+    case Unpaid = 'unpaid';
+    case Paid = 'paid';
+    case Refunded = 'refunded';
+    case Failed = 'failed';
+}

backend/app/Enums/Stripe/StripeCurrency.php

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

backend/app/Enums/Stripe/StripeEventType.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace App\Enums\Stripe;
+
+enum StripeEventType: string
+{
+    case CheckoutSessionCompleted = 'checkout.session.completed';
+}

backend/app/Enums/Stripe/StripePaymentMode.php

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

backend/app/Enums/User/UserRoles.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Enums;
+namespace App\Enums\User;
 
 enum UserRoles: string
 {

backend/app/Exceptions/StaleCartException.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Exceptions;
+
+use Exception;
+use Illuminate\Http\JsonResponse;
+
+class StaleCartException extends Exception
+{
+    public function __construct(
+        public readonly int|string $userId,
+        public readonly int|string $cartId,
+        public $message = 'Attempt to create a order with a stale cart',
+    ) {
+        parent::__construct($message);
+    }
+
+    public function context(): array
+    {
+        return [
+            'user_id' => $this->userId,
+            'cart_id' => $this->cartId,
+        ];
+    }
+
+    public function render(): JsonResponse
+    {
+        return response()->json(['message' => 'Cart is stale'], 409);
+    }
+}

backend/app/Http/Controllers/AuthenticatedUserController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers;
 
-use App\Data\UserDTO;
+use App\Data\User\UserDTO;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Auth;
 

backend/app/Http/Controllers/CartController.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Actions\Cart\AddProductToCartAction;
+use App\Actions\Cart\GetActiveUserCartAction;
+use App\Actions\Cart\RemoveProductFromCartAction;
+use App\Actions\Cart\UpdateProductInCartAction;
+use App\Data\Cart\AddToCartDTO;
+use App\Http\Requests\AddProductToCartRequest;
+use App\Http\Requests\RemoveProductFromCartRequest;
+use App\Http\Requests\UpdateProductInCartRequest;
+use App\Http\Resources\Cart\CartResource;
+use Illuminate\Support\Facades\Auth;
+
+class CartController extends Controller
+{
+    /**
+     * Store a newly created resource in storage.
+     */
+    public function store(AddProductToCartRequest $request, AddProductToCartAction $addProductAction)
+    {
+        $addToCartData = AddToCartDTO::fromRequest($request);
+
+        $cart = $addProductAction->execute($addToCartData, Auth::user());
+
+        return new CartResource($cart);
+
+    }
+
+    /**
+     * Display the specified resource.
+     */
+    public function show(GetActiveUserCartAction $action)
+    {
+        return new CartResource($action->execute(Auth::user()));
+    }
+
+    /**
+     * Update the specified resource in storage.
+     */
+    public function update(UpdateProductInCartRequest $request, UpdateProductInCartAction $action)
+    {
+        $updateCartData = AddToCartDTO::fromRequest($request);
+        $cart = $action->execute($updateCartData, $request->user());
+
+        return new CartResource($cart);
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     */
+    public function destroy(RemoveProductFromCartRequest $request, RemoveProductFromCartAction $action)
+    {
+        $user = $request->user();
+        try {
+            $cart = $action->execute($request->productId, $user);
+
+            return new CartResource($cart);
+        } catch (ModelNotFoundException $e) {
+
+            Log::error('No active cart found when removing a product from cart.', [
+                'user' => $user->id,
+                'error' => $e->getMessage(),
+            ]);
+
+            return response()->json([
+                'message' => 'No active cart found.',
+            ], 404);
+
+        } catch (MultipleRecordsFoundException $e) {
+            Log::error('Multiple active carts found for the user', [
+                'user' => $user->id,
+                'error' => $e->getMessage(),
+            ]);
+
+            return response()->json([
+                'message' => 'Multiple Active carts found.',
+            ], 409);
+        }
+
+    }
+}

backend/app/Http/Controllers/FavouriteProductController.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Http\Resources\Product\FavouriteProductResource;
+use App\Models\FavouriteProduct;
+use App\Models\Product;
+use App\Models\User;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Log;
+
+class FavouriteProductController extends Controller
+{
+    public function index()
+    {
+        return FavouriteProductResource::collection(FavouriteProduct::all());
+    }
+
+    public function toggle(Request $request, Product $product)
+    {
+        /**
+         * @var User $user
+         */
+        $user = $request->user();
+
+        $changes = $user->favoriteProducts()->toggle($product);
+        Log::info('hi again');
+        // If changes has any item, that means a product has been attached.
+        $isFavorite = count($changes['attached']) > 0;
+
+        return response()->json([
+            'message' => $isFavorite ? 'Product added to favorites' : 'Product removed from favorites',
+            'isFavorite' => $isFavorite,
+        ]);
+    }
+}

backend/app/Http/Controllers/OrderController.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Actions\Order\CreateOrderAction;
+use App\Data\Order\OrderRequestDTO;
+use App\Exceptions\StaleCartException;
+use App\Http\Requests\StoreOrderRequest;
+use App\Http\Requests\UpdateOrderRequest;
+use App\Models\Order;
+
+class OrderController extends Controller
+{
+    /**
+     * Display a listing of the resource.
+     */
+    public function index()
+    {
+        //
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     *
+     * @throws StaleCartException
+     */
+    public function store(StoreOrderRequest $request, CreateOrderAction $action)
+    {
+        $order = $action->execute(OrderRequestDTO::fromRequest($request), $request->user());
+
+        return response()->json([
+            'message' => 'Order created successfully',
+            'orderId' => $order->id,
+        ], 201);
+    }
+
+    /**
+     * Display the specified resource.
+     */
+    public function show(Order $order)
+    {
+        //
+    }
+
+    /**
+     * Update the specified resource in storage.
+     */
+    public function update(UpdateOrderRequest $request, Order $order)
+    {
+        //
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     */
+    public function destroy(Order $order)
+    {
+        //
+    }
+}

backend/app/Http/Controllers/PaymentController.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Actions\Payment\ProcessOrderPaymentAction;
+use App\Actions\Stripe\VerifyStripeSessionAction;
+use App\Enums\Payment\PaymentModes;
+use App\Http\Requests\PaymentRequest;
+use App\Http\Requests\VerifyPaymentRequest;
+use App\Http\Resources\Payment\PaymentResource;
+use App\Models\Order;
+use App\Models\Payment;
+
+class PaymentController extends Controller
+{
+    public function index()
+    {
+        return PaymentResource::collection(Payment::all());
+    }
+
+    public function store(PaymentRequest $request, Order $order, ProcessOrderPaymentAction $action)
+    {
+        $response = $action->execute($order, PaymentModes::tryFrom($request->mode));
+
+        return new PaymentResource($response);
+    }
+
+    public function verify(VerifyPaymentRequest $request, VerifyStripeSessionAction $action)
+    {
+        return $action->execute($request->orderId, $request->sessionId, $request->user())->toArray();
+    }
+
+    public function show(Payment $payment)
+    {
+        return new PaymentResource($payment);
+    }
+
+    public function update(PaymentRequest $request, Payment $payment)
+    {
+        $payment->update($request->validated());
+
+        return new PaymentResource($payment);
+    }
+}

backend/app/Http/Controllers/ProductCategoryController.php

@@ -2,7 +2,7 @@
 
 namespace App\Http\Controllers;
 
-use App\Actions\GetAllProductCategory;
+use App\Actions\Product\GetAllProductCategory;
 
 class ProductCategoryController extends Controller
 {

backend/app/Http/Controllers/ProductController.php

@@ -2,18 +2,20 @@
 
 namespace App\Http\Controllers;
 
-use App\Data\ProductDTO;
+use App\Data\Product\ProductDTO;
 use App\Http\Requests\CreateProductRequest;
-use App\Http\Resources\ProductResource;
+use App\Http\Resources\Product\ProductResource;
 use App\Models\Product;
+use App\Queries\GetProductsQuery;
 use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Auth;
 
 class ProductController extends Controller
 {
-    public function index()
+    public function index(GetProductsQuery $getProductsQuery)
     {
-        $paginator = Product::query()->with(['category:id,name,slug', 'images:id,path,product_id'])->paginate();
-        $paginatedDtos = $paginator->through(fn ($product) => ProductDTO::fromModel($product));
+        $products = $getProductsQuery->get(Auth::user());
+        $paginatedDtos = $products->through(fn ($product) => ProductDTO::fromModel($product));
 
         return ProductResource::collection($paginatedDtos);
     }
@@ -25,7 +27,10 @@ public function store(CreateProductRequest $request)
 
     public function show(string $slug)
     {
-        $product = Product::where('slug', $slug)->with(['category:id,name,slug', 'images:id,path,product_id'])->firstOrFail();
+        $product = Product::where('slug', $slug)
+            ->with(['category:id,name,slug', 'images:id,path,product_id'])
+            ->withExists('favoritedBy')
+            ->firstOrFail();
 
         return new ProductResource(ProductDTO::fromModel($product));
     }

backend/app/Http/Controllers/ProductImagesController.php

@@ -2,8 +2,8 @@
 
 namespace App\Http\Controllers;
 
-use App\Actions\UploadImageAction;
-use App\Data\UploadImageDTO;
+use App\Actions\Upload\UploadImageAction;
+use App\Data\Upload\UploadImageDTO;
 use App\Http\Requests\UploadImageRequest;
 use App\Models\ProductImages;
 

backend/app/Http/Controllers/RegisteredUserController.php

@@ -2,8 +2,8 @@
 
 namespace App\Http\Controllers;
 
-use App\Actions\CreateUserAction;
-use App\Data\RegisterDTO;
+use App\Actions\User\CreateUserAction;
+use App\Data\User\RegisterDTO;
 use App\Http\Requests\RegisterUserRequest;
 use Illuminate\Http\JsonResponse;
 

backend/app/Http/Controllers/StripeWebhookController.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Actions\Payment\MarkPaymentAsPaidAction;
+use App\Enums\Stripe\StripeEventType;
+use App\Models\Payment;
+use Illuminate\Http\Request;
+use Log;
+use Stripe\Exception\SignatureVerificationException;
+use Stripe\Webhook;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use UnexpectedValueException;
+
+class StripeWebhookController extends Controller
+{
+    public function __construct(private readonly MarkPaymentAsPaidAction $paidAction) {}
+
+    public function __invoke(Request $request)
+    {
+        $payload = $request->getContent();
+        $sigHeader = $request->header('Stripe-Signature');
+        try {
+            $event = Webhook::constructEvent($payload, $sigHeader, config('services.stripe.webhook'));
+        } catch (SignatureVerificationException|UnexpectedValueException $e) {
+            Log::error('Stripe webhook signature verification error.', [$e->getMessage()]);
+            throw new BadRequestHttpException('Invalid Signature');
+        }
+        if ($event->type === StripeEventType::CheckoutSessionCompleted->value) {
+            $sessionId = $event->data->object->id ?? null;
+            if ($sessionId) {
+                $this->handleCheckoutSessionCompleted($sessionId);
+            } else {
+                throw new NotFoundHttpException('Session id not found in event');
+            }
+        }
+    }
+
+    private function handleCheckoutSessionCompleted(string $sessionId): void
+    {
+        $payment = Payment::where('transaction_id', $sessionId)->first();
+
+        if (! $payment) {
+            Log::error('Stripe Webhook: Payment record not found.', ['session_id' => $sessionId]);
+            throw new NotFoundHttpException('Payment record not found');
+        }
+
+        $this->paidAction->execute($payment);
+
+        Log::info('Stripe Webhook: Payment successfully marked as paid', ['order_id' => $payment->order_id]);
+    }
+}

backend/app/Http/Controllers/UserAddressController.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Actions\Address\DeleteUserAddressAction;
+use App\Actions\Address\SaveUserAddressAction;
+use App\Actions\Address\UpdateUserAddressAction;
+use App\Data\Address\AddUserAddressRequestDTO;
+use App\Data\Address\UpdateUserAddressRequestDTO;
+use App\Data\Address\UserAddressResponseDTO;
+use App\Http\Requests\AddUserAddressRequest;
+use App\Http\Requests\UpdateUserAddressRequest;
+use App\Http\Resources\Address\AddressResource;
+use App\Models\Address;
+use Illuminate\Http\Request;
+
+class UserAddressController extends Controller
+{
+    /**
+     * Display a listing of the resource.
+     */
+    public function index(Request $request)
+    {
+        $addresses = $request->user()->addresses;
+        $data = $addresses->map(fn ($address) => UserAddressResponseDTO::fromModel($address));
+
+        return AddressResource::collection($data);
+    }
+
+    /**
+     * Store a newly created resource in storage.
+     */
+    public function store(AddUserAddressRequest $request, SaveUserAddressAction $action)
+    {
+        return new AddressResource($action->execute(AddUserAddressRequestDTO::fromRequest($request), $request->user()));
+    }
+
+    /**
+     * Display the specified resource.
+     */
+    public function show(Address $address)
+    {
+        return new AddressResource(UserAddressResponseDTO::fromModel($address));
+    }
+
+    /**
+     * Update the specified resource in storage.
+     */
+    public function update(UpdateUserAddressRequest $request, Address $address, UpdateUserAddressAction $action)
+    {
+        return new AddressResource($action->execute(UpdateUserAddressRequestDTO::fromRequest($request), $address));
+    }
+
+    /**
+     * Remove the specified resource from storage.
+     */
+    public function destroy(Address $address, DeleteUserAddressAction $action)
+    {
+        return $action->execute($address);
+    }
+}

backend/app/Http/Requests/AddProductToCartRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class AddProductToCartRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'productId' => 'required|exists:products,id',
+            'quantity' => 'required|numeric|min:1',
+        ];
+    }
+}

backend/app/Http/Requests/AddUserAddressRequest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class AddUserAddressRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'firstName' => 'required|string|min:3|max:50',
+            'lastName' => 'required|string|min:3|max:50',
+            'street' => 'required|string|min:3|max:100',
+            'city' => 'required|string|min:3|max:20',
+            'state' => 'required|string|min:3|max:40',
+            'pinCode' => 'required|string|min:3|max:10',
+        ];
+    }
+}

backend/app/Http/Requests/PaymentRequest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Http\Requests;
+
+use App\Enums\Payment\PaymentModes;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class PaymentRequest extends FormRequest
+{
+    public function rules(): array
+    {
+        return [
+            'mode' => ['required', Rule::enum(PaymentModes::class)],
+        ];
+    }
+
+    public function authorize(): bool
+    {
+        return true;
+    }
+}

backend/app/Http/Requests/RegisterUserRequest.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Requests;
 
+use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
 use Illuminate\Validation\Rules\Password;
 
@@ -18,7 +19,7 @@ public function authorize(): bool
     /**
      * Get the validation rules that apply to the request.
      *
-     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
+     * @return array<string, ValidationRule|array<mixed>|string>
      */
     public function rules(): array
     {

backend/app/Http/Requests/RemoveProductFromCartRequest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class RemoveProductFromCartRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'productId' => ['required', 'exists:products,id'],
+        ];
+    }
+}

backend/app/Http/Requests/StoreOrderRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class StoreOrderRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'cartId' => 'required|exists:carts,id',
+            'addressId' => 'required|exists:addresses,id',
+        ];
+    }
+}

backend/app/Http/Requests/UpdateOrderRequest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateOrderRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return false;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            //
+        ];
+    }
+}

backend/app/Http/Requests/UpdateProductInCartRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateProductInCartRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'productId' => ['required', 'exists:products,id'],
+            'quantity' => ['required', 'min:0', 'max:10'],
+        ];
+    }
+}

backend/app/Http/Requests/UpdateUserAddressRequest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateUserAddressRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'firstName' => 'sometimes|string|min:3|max:50',
+            'lastName' => 'sometimes|string|min:3|max:50',
+            'street' => 'sometimes|string|min:3|max:100',
+            'city' => 'sometimes|string|min:3|max:20',
+            'state' => 'sometimes|string|min:3|max:40',
+            'pinCode' => 'sometimes|string|min:3|max:10',
+
+        ];
+    }
+}

backend/app/Http/Requests/UploadImageRequest.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Requests;
 
+use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
 
 class UploadImageRequest extends FormRequest
@@ -17,7 +18,7 @@ public function authorize(): bool
     /**
      * Get the validation rules that apply to the request.
      *
-     * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
+     * @return array<string, ValidationRule|array<mixed>|string>
      */
     public function rules(): array
     {

backend/app/Http/Requests/VerifyPaymentRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests;
+
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class VerifyPaymentRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array<string, ValidationRule|array<mixed>|string>
+     */
+    public function rules(): array
+    {
+        return [
+            'sessionId' => 'required|exists:stripe_sessions,session_id',
+            'orderId' => 'required|exists:orders,id',
+        ];
+    }
+}

backend/app/Http/Resources/Address/AddressCollection.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Http\Resources\Address;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\ResourceCollection;
+
+class AddressCollection extends ResourceCollection
+{
+    /**
+     * Transform the resource collection into an array.
+     *
+     * @return array<int|string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return parent::toArray($request);
+    }
+}

backend/app/Http/Resources/Address/AddressResource.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Resources\Address;
+
+use App\Data\Address\UserAddressResponseDTO;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @property UserAddressResponseDTO $resource
+ */
+class AddressResource extends JsonResource
+{
+    public static $wrap = null;
+
+    /**
+     * Transform the resource into an array.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->resource->id,
+            'firstName' => $this->resource->firstName,
+            'lastName' => $this->resource->lastName,
+            'street' => $this->resource->street,
+            'city' => $this->resource->city,
+            'state' => $this->resource->state,
+            'pinCode' => $this->resource->pinCode,
+        ];
+    }
+}

backend/app/Http/Resources/Cart/CartItemCollection.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Http\Resources\Cart;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\ResourceCollection;
+
+class CartItemCollection extends ResourceCollection
+{
+    /**
+     * Transform the resource collection into an array.
+     *
+     * @return array<int|string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return parent::toArray($request);
+    }
+}

backend/app/Http/Resources/Cart/CartItemResource.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Http\Resources\Cart;
+
+use App\Data\Cart\CartItemDTO;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+use Illuminate\Support\Facades\Storage;
+
+/**
+ * @property CartItemDTO $resource
+ */
+class CartItemResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->resource->id,
+            'title' => $this->resource->title,
+            'quantity' => $this->resource->quantity,
+            'price' => $this->resource->price,
+            'subtotal' => $this->resource->subtotal,
+            'image' => Storage::disk('public')->url($this->resource->image),
+        ];
+    }
+}

backend/app/Http/Resources/Cart/CartResource.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Resources\Cart;
+
+use App\Data\Cart\CartDTO;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @property CartDTO $resource
+ */
+class CartResource extends JsonResource
+{
+    public static $wrap = null;
+
+    /**
+     * Transform the resource into an array.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->resource->id,
+            'itemsCount' => $this->resource->itemsCount,
+            'totalPrice' => $this->resource->totalPrice,
+            'items' => CartItemResource::collection($this->resource->items),
+        ];
+    }
+}

backend/app/Http/Resources/Order/OrderResource.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Http\Resources\Order;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class OrderResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(Request $request): array
+    {
+        return parent::toArray($request);
+    }
+}

backend/app/Http/Resources/Payment/PaymentResource.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Resources\Payment;
+
+use App\Data\Payment\PaymentResponseDTO;
+use App\Models\Payment;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/**
+ * @mixin Payment
+ *
+ * @property PaymentResponseDTO $resource
+ */
+class PaymentResource extends JsonResource
+{
+    public static $wrap = null;
+
+    public function toArray(Request $request): array
+    {
+        return [
+            'success' => $this->resource->isSuccess,
+            'amount' => $this->resource->amount,
+            'currency' => $this->resource->currency,
+            'method' => $this->resource->method,
+            'redirectUrl' => $this->resource->redirectUrl,
+            'errorMessage' => $this->resource->errorMessage,
+        ];
+    }
+}

backend/app/Http/Resources/Product/FavouriteProductResource.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Http\Resources\Product;
+
+use App\Models\FavouriteProduct;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/** @mixin FavouriteProduct */
+class FavouriteProductResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'created_at' => $this->created_at,
+            'updated_at' => $this->updated_at,
+
+            'user_id' => $this->user_id,
+            'product_id' => $this->product_id,
+        ];
+    }
+}

backend/app/Http/Resources/Product/ProductCollection.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Resources;
+namespace App\Http\Resources\Product;
 
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\ResourceCollection;

backend/app/Http/Resources/Product/ProductResource.php

@@ -1,9 +1,9 @@
 <?php
 
-namespace App\Http\Resources;
+namespace App\Http\Resources\Product;
 
-use App\Data\ProductDTO;
-use App\Data\ProductImageDTO;
+use App\Data\Product\ProductDTO;
+use App\Data\Product\ProductImageDTO;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\JsonResource;
 use Illuminate\Support\Facades\Storage;
@@ -30,6 +30,7 @@ public function toArray(Request $request): array
                 return Storage::disk('public')->url($productImage->path);
             }, $this->resource->productImages),
             'updatedAt' => $this->resource->updatedAt,
+            'isFavorite' => $this->resource->isFavorite,
         ];
     }
 }

backend/app/Models/Address.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+
+/**
+ * @mixin IdeHelperAddress
+ */
+class Address extends Model
+{
+    protected $fillable = ['first_name', 'last_name', 'street', 'city', 'state', 'pin'];
+
+    public function users(): BelongsToMany
+    {
+        return $this->belongsToMany(User::class);
+    }
+}

backend/app/Models/Cart.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Models;
+
+use App\Enums\Cart\CartStatus;
+use Illuminate\Database\Eloquent\Attributes\Scope;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+
+/**
+ * @mixin IdeHelperCart
+ */
+class Cart extends Model
+{
+    protected $fillable = ['user_id', 'status'];
+
+    public function products(): BelongsToMany
+    {
+        return $this->belongsToMany(Product::class)
+            ->withPivot('price', 'quantity')
+            ->withTimestamps();
+    }
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function order(): BelongsTo
+    {
+        return $this->belongsTo(Order::class);
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'status' => CartStatus::class,
+        ];
+    }
+
+    #[Scope]
+    protected function active(Builder $query)
+    {
+        return $query->where('status', CartStatus::Active);
+    }
+
+    #[Scope]
+    protected function withProducts(Builder $query)
+    {
+        return $query->with(['products' => function ($product) {
+            $product->withPivot('quantity', 'price');
+        }]);
+    }
+}

backend/app/Models/Order.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Casts\Attribute;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+
+/**
+ * @mixin IdeHelperOrder
+ */
+class Order extends Model
+{
+    public $fillable = [
+        'user_id', 'cart_id', 'status', 'shipping_city', 'shipping_street', 'shipping_last_name', 'shipping_first_name',
+        'shipping_state', 'shipping_pin',
+    ];
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function cart(): BelongsTo
+    {
+        return $this->belongsTo(Cart::class);
+    }
+
+    /**
+     * Stripe session id helps to update status later from webhook
+     *
+     * @return HasOne<StripeSession>
+     */
+    public function stripeSession(): HasOne
+    {
+        return $this->hasOne(StripeSession::class);
+    }
+
+    /**
+     * @return HasMany<Payment>
+     */
+    public function payments(): HasMany
+    {
+        return $this->hasMany(Payment::class);
+    }
+
+    protected function totalAmount(): Attribute
+    {
+        return Attribute::make(
+            fn () => $this->cart?->products->sum(fn ($product) => $product->pivot->price * $product->pivot->quantity) ?? 0
+        );
+    }
+}

backend/app/Models/Payment.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Casts\Attribute;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+/**
+ * @mixin IdeHelperPayment
+ */
+class Payment extends Model
+{
+    protected $fillable = [
+        'order_id',
+        'transaction_id',
+        'amount',
+        'currency',
+        'payment_method',
+        'payment_status_id',
+        'error_message',
+    ];
+
+    protected $with = ['paymentStatus'];
+
+    public function order(): BelongsTo
+    {
+        return $this->belongsTo(Order::class);
+    }
+
+    public function paymentStatus(): BelongsTo
+    {
+        return $this->belongsTo(PaymentStatus::class);
+    }
+
+    protected function status(): Attribute
+    {
+        return Attribute::make(fn () => $this->paymentStatus?->name);
+    }
+}

backend/app/Models/PaymentStatus.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * @mixin IdeHelperPaymentStatus
+ */
+class PaymentStatus extends Model
+{
+    public $timestamps = false;
+
+    protected $fillable = [
+        'name',
+    ];
+
+    public static function getIdByName(string $name): ?int
+    {
+        return static::where('name', $name)->value('id');
+    }
+}

backend/app/Models/Product.php

@@ -2,11 +2,17 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Attributes\Scope;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Support\Str;
 
+/**
+ * @mixin IdeHelperProduct
+ */
 class Product extends Model
 {
     protected $fillable = [
@@ -28,6 +34,22 @@ public function images(): HasMany
         return $this->hasMany(ProductImage::class, 'product_id', 'id');
     }
 
+    public function favoritedBy(): BelongsToMany
+    {
+        return $this->belongsToMany(User::class, 'favorite_products');
+    }
+
+    public function carts()
+    {
+        return $this->belongsToMany(Cart::class);
+    }
+
+    #[Scope]
+    protected function active(Builder $query): Builder
+    {
+        return $query->where('is_active', true);
+    }
+
     protected static function booted(): void
     {
         static::saving(function ($product) {
@@ -36,4 +58,11 @@ protected static function booted(): void
             }
         });
     }
+
+    protected function casts()
+    {
+        return [
+            'is_active' => 'boolean',
+        ];
+    }
 }

backend/app/Models/ProductCategory.php

@@ -4,6 +4,9 @@
 
 use Illuminate\Database\Eloquent\Model;
 
+/**
+ * @mixin IdeHelperProductCategory
+ */
 class ProductCategory extends Model
 {
     //

backend/app/Models/ProductImage.php

@@ -5,6 +5,9 @@
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 
+/**
+ * @mixin IdeHelperProductImage
+ */
 class ProductImage extends Model
 {
     protected $fillable = [

backend/app/Models/StripeSession.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+
+/**
+ * @mixin IdeHelperStripeSession
+ */
+class StripeSession extends Model
+{
+    public $fillable = ['session_id', 'order_id'];
+
+    public function order(): HasOne
+    {
+        return $this->hasOne(Order::class);
+    }
+}

backend/app/Models/User.php

@@ -3,15 +3,23 @@
 namespace App\Models;
 
 // use Illuminate\Contracts\Auth\MustVerifyEmail;
-use App\Enums\UserRoles;
+use App\Enums\User\UserRoles;
+use Database\Factories\UserFactory;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
 
+/**
+ * @mixin IdeHelperUser
+ */
 class User extends Authenticatable
 {
-    /** @use HasFactory<\Database\Factories\UserFactory> */
-    use HasFactory, Notifiable;
+    /** @use HasFactory<UserFactory> */
+    use HasFactory;
+
+    use Notifiable;
 
     /**
      * The attributes that are mass assignable.
@@ -37,6 +45,40 @@ class User extends Authenticatable
         'remember_token',
     ];
 
+    public function hasFavorited(Product $product): bool
+    {
+        return $this->favoriteProducts()->where('product_id', $product->id)->exists();
+    }
+
+    public function favoriteProducts(): BelongsToMany
+    {
+        return $this->belongsToMany(Product::class, 'favorite_products', 'user_id', 'product_id');
+    }
+
+    /**
+     * @return HasMany<Cart>
+     */
+    public function carts(): HasMany
+    {
+        return $this->hasMany(Cart::class);
+    }
+
+    /**
+     * @return BelongsToMany<Address>
+     */
+    public function addresses(): BelongsToMany
+    {
+        return $this->belongsToMany(Address::class);
+    }
+
+    /**
+     * @return HasMany<Order>
+     */
+    public function orders(): HasMany
+    {
+        return $this->hasMany(Order::class);
+    }
+
     /**
      * Get the attributes that should be cast.
      *

backend/app/Providers/AppServiceProvider.php

@@ -3,6 +3,7 @@
 namespace App\Providers;
 
 use Illuminate\Support\ServiceProvider;
+use Stripe\StripeClient;
 
 class AppServiceProvider extends ServiceProvider
 {
@@ -11,7 +12,7 @@ class AppServiceProvider extends ServiceProvider
      */
     public function register(): void
     {
-        //
+        $this->app->singleton(StripeClient::class, fn () => new StripeClient(config('services.stripe.secret')));
     }
 
     /**

backend/app/Queries/GetProductsQuery.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Queries;
+
+use App\Models\Product;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Pagination\LengthAwarePaginator;
+
+final readonly class GetProductsQuery
+{
+    public function get(?User $user = null): LengthAwarePaginator
+    {
+        return Product::query()
+            ->active()
+            ->when($user, function (Builder $query) use ($user) {
+                $query->withExists(
+                    [
+                        'favoritedBy' => fn (Builder $query) => $query->where('user_id', $user->id),
+                    ]
+                );
+
+            })
+            ->with(['category:id,name,slug', 'images:id,path,product_id'])
+            ->paginate();
+    }
+}

backend/app/Services/Payment/CodPaymentGateway.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Services\Payment;
+
+use App\Contracts\PaymentGateway;
+use App\Models\Order;
+
+class CodPaymentGateway implements PaymentGateway
+{
+    public function charge(Order $order)
+    {
+        // TODO: Implement charge() method
+    }
+}