Начал 3 лабу

.idea/kotlinc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.8.10" />
+    <option name="version" value="1.8.20" />
   </component>
 </project>

app/build.gradle.kts

@@ -1,6 +1,7 @@
 plugins {
     id("com.android.application")
     id("org.jetbrains.kotlin.android")
+    id("com.google.devtools.ksp")
 }
 
 android {
@@ -67,4 +68,12 @@ dependencies {
     androidTestImplementation("androidx.compose.ui:ui-test-junit4")
     debugImplementation("androidx.compose.ui:ui-tooling")
     debugImplementation("androidx.compose.ui:ui-test-manifest")
+
+    // Room
+    val room_version = "2.5.2"
+    implementation("androidx.room:room-runtime:$room_version")
+    annotationProcessor("androidx.room:room-compiler:$room_version")
+    ksp("androidx.room:room-compiler:$room_version")
+    implementation("androidx.room:room-ktx:$room_version")
+    implementation("androidx.room:room-paging:$room_version")
 }

app/src/main/java/com/example/mobileapp/database/MobileAppDataBase.kt

@@ -0,0 +1,11 @@
+package com.example.mobileapp.database
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+import com.example.mobileapp.database.entities.Mail
+import com.example.mobileapp.database.entities.Story
+import com.example.mobileapp.database.entities.User
+
+@Database(entities = [User::class, Story::class, Mail::class], version = 1, exportSchema = false)
+abstract class MobileAppDataBase : RoomDatabase() {
+}

app/src/main/java/com/example/mobileapp/database/dao/MailDao.kt

@@ -0,0 +1,12 @@
+package com.example.mobileapp.database.dao
+
+import androidx.room.Dao
+import androidx.room.Query
+import com.example.mobileapp.database.entities.Mail
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface MailDao {
+    @Query("select * from mails")
+    fun getAll(): Flow<List<Mail>>
+}

app/src/main/java/com/example/mobileapp/database/dao/StoryDao.kt

@@ -0,0 +1,12 @@
+package com.example.mobileapp.database.dao
+
+import androidx.room.Dao
+import androidx.room.Query
+import com.example.mobileapp.database.entities.Story
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface StoryDao {
+    @Query("select * from stories")
+    fun getAll(): Flow<List<Story>>
+}

app/src/main/java/com/example/mobileapp/database/dao/UserDao.kt

@@ -0,0 +1,12 @@
+package com.example.mobileapp.database.dao
+
+import androidx.room.Dao
+import androidx.room.Query
+import com.example.mobileapp.database.entities.User
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface UserDao {
+    @Query("select * from users")
+    fun getAll():Flow<List<User>>
+}

app/src/main/java/com/example/mobileapp/database/entities/Mail.kt

@@ -0,0 +1,31 @@
+package com.example.mobileapp.database.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.PrimaryKey
+
+@Entity(
+    tableName = "mails",
+    foreignKeys = [
+        ForeignKey(
+            entity = User::class,
+            parentColumns = ["id"],
+            childColumns = ["user_id"],
+            onDelete = ForeignKey.RESTRICT,
+            onUpdate = ForeignKey.RESTRICT
+        )
+    ]
+)
+data class Mail(
+    @PrimaryKey(autoGenerate = true)
+    var id: Int?,
+    @ColumnInfo(name = "message")
+    val message: String,
+    @ColumnInfo(name="user_id")
+    val userId: Int
+){
+    override fun hashCode(): Int {
+        return id ?: -1
+    }
+}

app/src/main/java/com/example/mobileapp/database/entities/Story.kt

@@ -0,0 +1,36 @@
+package com.example.mobileapp.database.entities
+
+import android.graphics.Bitmap
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.PrimaryKey
+
+@Entity(
+    tableName = "stories",
+    foreignKeys = [
+        ForeignKey(
+            entity = User::class,
+            parentColumns = ["id"],
+            childColumns = ["user_id"],
+            onDelete = ForeignKey.RESTRICT,
+            onUpdate = ForeignKey.RESTRICT
+        )
+    ]
+)
+data class Story(
+    @PrimaryKey(autoGenerate = true)
+    val id: Int?,
+    @ColumnInfo(name = "title")
+    val title: String,
+    @ColumnInfo(name = "description")
+    val description: String,
+    @ColumnInfo(name = "cover")
+    val cover: Bitmap,
+    @ColumnInfo(name="user_id")
+    val userId: Int
+){
+    override fun hashCode(): Int {
+        return id ?: -1
+    }
+}

app/src/main/java/com/example/mobileapp/database/entities/User.kt

@@ -0,0 +1,21 @@
+package com.example.mobileapp.database.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "users")
+data class User(
+    @PrimaryKey(autoGenerate = true)
+    var id: Int?,
+    @ColumnInfo(name = "login")
+    val login: String,
+    @ColumnInfo(name = "password")
+    val password: String,
+    @ColumnInfo(name = "email")
+    val email: String,
+){
+    override fun hashCode(): Int {
+        return id ?: -1
+    }
+}

build.gradle.kts

@@ -2,4 +2,5 @@
 plugins {
     id("com.android.application") version "8.1.1" apply false
     id("org.jetbrains.kotlin.android") version "1.8.10" apply false
+    id("com.google.devtools.ksp") version "1.8.20-1.0.11" apply false
 }