diff --git a/app/build.gradle b/app/build.gradle
index f86c5cb..2c2d9fa 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -73,4 +73,8 @@ dependencies {
     implementation 'androidx.room:room-runtime:2.5.0' // Библиотека "Room"
     kapt "androidx.room:room-compiler:2.5.0" // Кодогенератор
     implementation 'androidx.room:room-ktx:2.5.0' // Дополнительно для Kotlin Coroutines, Kotlin Flows
+
+    // lab4
+    implementation "com.google.dagger:hilt-android:2.40.5"
+    kapt "com.google.dagger:hilt-android-compiler:2.40.5"
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/shawarma/MainActivity.kt b/app/src/main/java/com/example/shawarma/MainActivity.kt
index fd16c24..94fc2fb 100644
--- a/app/src/main/java/com/example/shawarma/MainActivity.kt
+++ b/app/src/main/java/com/example/shawarma/MainActivity.kt
@@ -11,16 +11,14 @@ import com.example.shawarma.screens.authorization.AuthorizationScreen
 import com.example.shawarma.screens.registration.RegistrationScreen
 import com.example.shawarma.ui.theme.MyLightYellow
 import com.example.shawarma.ui.theme.ShawarmaTheme
+import dagger.hilt.android.HiltAndroidApp
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
         setContent {
-
-                    MainNavBar()
-
-
+            MainNavBar()
         }
     }
 }
diff --git a/app/src/main/java/com/example/shawarma/data/db/AppDatabase.kt b/app/src/main/java/com/example/shawarma/data/db/AppDatabase.kt
index 3c0f6f6..2365a7d 100644
--- a/app/src/main/java/com/example/shawarma/data/db/AppDatabase.kt
+++ b/app/src/main/java/com/example/shawarma/data/db/AppDatabase.kt
@@ -6,10 +6,10 @@ import androidx.room.Room
 import androidx.room.RoomDatabase
 import androidx.room.TypeConverters
 import androidx.sqlite.db.SupportSQLiteDatabase
-import com.example.shawarma.data.dao.OrderDao
-import com.example.shawarma.data.dao.OrderProductDao
-import com.example.shawarma.data.dao.ProductDao
-import com.example.shawarma.data.dao.UserDao
+import com.example.shawarma.data.interfaces.dao.OrderDao
+import com.example.shawarma.data.interfaces.dao.OrderProductDao
+import com.example.shawarma.data.interfaces.dao.ProductDao
+import com.example.shawarma.data.interfaces.dao.UserDao
 import com.example.shawarma.data.models.OrderModel
 import com.example.shawarma.data.models.OrderProductModel
 import com.example.shawarma.data.models.OrderStatus
diff --git a/app/src/main/java/com/example/shawarma/data/dao/OrderDao.kt b/app/src/main/java/com/example/shawarma/data/interfaces/dao/OrderDao.kt
similarity index 88%
rename from app/src/main/java/com/example/shawarma/data/dao/OrderDao.kt
rename to app/src/main/java/com/example/shawarma/data/interfaces/dao/OrderDao.kt
index 4fa164b..eba1de0 100644
--- a/app/src/main/java/com/example/shawarma/data/dao/OrderDao.kt
+++ b/app/src/main/java/com/example/shawarma/data/interfaces/dao/OrderDao.kt
@@ -1,4 +1,4 @@
-package com.example.shawarma.data.dao
+package com.example.shawarma.data.interfaces.dao
 
 import androidx.room.Dao
 import androidx.room.Delete
@@ -8,23 +8,18 @@ import androidx.room.Update
 import com.example.shawarma.data.models.OrderModel
 import com.example.shawarma.data.models.OrderWithProducts
 import kotlinx.coroutines.flow.Flow
-
 @Dao
 interface OrderDao {
     @Insert
     suspend fun insert(order: OrderModel)
-
     @Update
     suspend fun update(order: OrderModel)
-
     @Delete
     suspend fun delete(order: OrderModel)
-
     @Query("select * from orders")
-    fun getAll() : Flow<List<OrderWithProducts>>
+    fun getAll(): Flow<List<OrderWithProducts>>
     @Query("select * from orders where orders.id =:id")
     fun getById(id: Int): Flow<List<OrderWithProducts>>
     @Query("select * from orders where orders.user_id =:userId")
     fun getByUserId(userId: Int): Flow<List<OrderWithProducts>>
-
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/shawarma/data/dao/OrderProductDao.kt b/app/src/main/java/com/example/shawarma/data/interfaces/dao/OrderProductDao.kt
similarity index 80%
rename from app/src/main/java/com/example/shawarma/data/dao/OrderProductDao.kt
rename to app/src/main/java/com/example/shawarma/data/interfaces/dao/OrderProductDao.kt
index 1bef4fc..1384f66 100644
--- a/app/src/main/java/com/example/shawarma/data/dao/OrderProductDao.kt
+++ b/app/src/main/java/com/example/shawarma/data/interfaces/dao/OrderProductDao.kt
@@ -1,9 +1,8 @@
-package com.example.shawarma.data.dao
+package com.example.shawarma.data.interfaces.dao
 
 import androidx.room.Dao
 import androidx.room.Insert
 import com.example.shawarma.data.models.OrderProductModel
-
 @Dao
 interface OrderProductDao {
     @Insert
diff --git a/app/src/main/java/com/example/shawarma/data/dao/ProductDao.kt b/app/src/main/java/com/example/shawarma/data/interfaces/dao/ProductDao.kt
similarity index 94%
rename from app/src/main/java/com/example/shawarma/data/dao/ProductDao.kt
rename to app/src/main/java/com/example/shawarma/data/interfaces/dao/ProductDao.kt
index 53a2276..1bff9a8 100644
--- a/app/src/main/java/com/example/shawarma/data/dao/ProductDao.kt
+++ b/app/src/main/java/com/example/shawarma/data/interfaces/dao/ProductDao.kt
@@ -1,4 +1,4 @@
-package com.example.shawarma.data.dao
+package com.example.shawarma.data.interfaces.dao
 
 import androidx.room.Dao
 import androidx.room.Delete
@@ -7,7 +7,6 @@ import androidx.room.Query
 import androidx.room.Update
 import com.example.shawarma.data.models.ProductModel
 import kotlinx.coroutines.flow.Flow
-
 @Dao
 interface ProductDao {
     @Insert
@@ -30,4 +29,5 @@ interface ProductDao {
 
     @Query("select * from products where products.id = :id")
     fun getById(id: Int): Flow<ProductModel>
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/shawarma/data/dao/UserDao.kt b/app/src/main/java/com/example/shawarma/data/interfaces/dao/UserDao.kt
similarity index 86%
rename from app/src/main/java/com/example/shawarma/data/dao/UserDao.kt
rename to app/src/main/java/com/example/shawarma/data/interfaces/dao/UserDao.kt
index b00e1ca..9a4a885 100644
--- a/app/src/main/java/com/example/shawarma/data/dao/UserDao.kt
+++ b/app/src/main/java/com/example/shawarma/data/interfaces/dao/UserDao.kt
@@ -1,4 +1,4 @@
-package com.example.shawarma.data.dao
+package com.example.shawarma.data.interfaces.dao
 
 import androidx.room.Dao
 import androidx.room.Delete
@@ -12,16 +12,12 @@ import kotlinx.coroutines.flow.Flow
 interface UserDao {
     @Insert
     suspend fun insert(user: UserModel)
-
     @Update
     suspend fun update(user: UserModel)
-
     @Delete
     suspend fun delete(user: UserModel)
-
     @Query("select * from users order by user_login collate nocase asc")
-    fun getAll() : Flow<List<UserModel>>
-
+    fun getAll(): Flow<List<UserModel>>
     @Query("select * from users where users.id = :id")
     fun getById(id: Int): UserModel
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/shawarma/data/repos/OrderProductRepository.kt b/app/src/main/java/com/example/shawarma/data/repos/OrderProductRepository.kt
new file mode 100644
index 0000000..0e5c1b3
--- /dev/null
+++ b/app/src/main/java/com/example/shawarma/data/repos/OrderProductRepository.kt
@@ -0,0 +1,16 @@
+package com.example.shawarma.data.repos
+
+import androidx.room.Dao
+import androidx.room.Insert
+import com.example.shawarma.data.interfaces.dao.OrderDao
+import com.example.shawarma.data.interfaces.dao.OrderProductDao
+import com.example.shawarma.data.models.OrderProductModel
+import javax.inject.Inject
+
+class OrderProductRepository @Inject constructor(
+    private val orderProductDao: OrderProductDao
+) {
+    suspend fun insert(order: OrderProductModel) {
+        return orderProductDao.insert(order)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/shawarma/data/repos/OrderRepository.kt b/app/src/main/java/com/example/shawarma/data/repos/OrderRepository.kt
new file mode 100644
index 0000000..756a408
--- /dev/null
+++ b/app/src/main/java/com/example/shawarma/data/repos/OrderRepository.kt
@@ -0,0 +1,36 @@
+package com.example.shawarma.data.repos
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Update
+import com.example.shawarma.data.interfaces.dao.OrderDao
+import com.example.shawarma.data.interfaces.dao.ProductDao
+import com.example.shawarma.data.models.OrderModel
+import com.example.shawarma.data.models.OrderWithProducts
+import kotlinx.coroutines.flow.Flow
+import javax.inject.Inject
+
+class OrderRepository @Inject constructor(
+    private val orderDao: OrderDao
+){
+    suspend fun insert(order: OrderModel) {
+        return orderDao.insert(order)
+    }
+    suspend fun update(order:OrderModel) {
+        return orderDao.update(order)
+    }
+    suspend fun delete(order: OrderModel) {
+        return orderDao.delete(order)
+    }
+    fun getAll(): Flow<List<OrderWithProducts>> {
+        return orderDao.getAll()
+    }
+    fun getById(id: Int): Flow<List<OrderWithProducts>> {
+        return orderDao.getById(id)
+    }
+    fun getByUserId(userId: Int): Flow<List<OrderWithProducts>> {
+        return orderDao.getByUserId(userId)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/shawarma/data/repos/ProductRepository.kt b/app/src/main/java/com/example/shawarma/data/repos/ProductRepository.kt
new file mode 100644
index 0000000..daf6592
--- /dev/null
+++ b/app/src/main/java/com/example/shawarma/data/repos/ProductRepository.kt
@@ -0,0 +1,37 @@
+package com.example.shawarma.data.repos
+
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Update
+import com.example.shawarma.data.interfaces.dao.ProductDao
+import com.example.shawarma.data.interfaces.dao.UserDao
+import com.example.shawarma.data.models.ProductModel
+import kotlinx.coroutines.flow.Flow
+import javax.inject.Inject
+
+class ProductRepository @Inject constructor(
+    private val productDao: ProductDao
+) {
+    suspend fun insert(product: ProductModel) {
+        return productDao.insert(product)
+    }
+    suspend fun update(product: ProductModel) {
+        return productDao.update(product)
+    }
+    suspend fun delete(product: ProductModel) {
+        return productDao.delete(product)
+    }
+    fun getAll(): Flow<List<ProductModel>> {
+        return productDao.getAll()
+    }
+    fun getDiscounts(): Flow<List<ProductModel>> {
+        return productDao.getDiscounts()
+    }
+    fun getItems(): Flow<List<ProductModel>> {
+        return productDao.getItems()
+    }
+    fun getById(id: Int): Flow<ProductModel> {
+        return productDao.getById(id)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/shawarma/data/repos/UserRepository.kt b/app/src/main/java/com/example/shawarma/data/repos/UserRepository.kt
new file mode 100644
index 0000000..de6acc6
--- /dev/null
+++ b/app/src/main/java/com/example/shawarma/data/repos/UserRepository.kt
@@ -0,0 +1,27 @@
+package com.example.shawarma.data.repos
+
+import androidx.room.Dao
+import com.example.shawarma.data.interfaces.dao.UserDao
+import com.example.shawarma.data.models.UserModel
+import kotlinx.coroutines.flow.Flow
+import javax.inject.Inject
+
+class UserRepository @Inject constructor(
+    private val userDao: UserDao
+)  {
+    suspend fun insert(user: UserModel) {
+        return userDao.insert(user)
+    }
+    suspend fun update (user: UserModel) {
+        return userDao.update(user)
+    }
+    suspend fun delete (user: UserModel) {
+        return userDao.delete(user)
+    }
+    fun getAll(): Flow<List<UserModel>> {
+        return userDao.getAll()
+    }
+    fun getById(id: Int): UserModel {
+        return userDao.getById(id)
+    }
+}
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 44023d2..b7bfbe5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,6 +7,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:4.0.0'
+        classpath 'com.google.dagger:hilt-android-gradle-plugin:2.40.5'
     }
 }// Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {