UI/driving licence

.gitignore

@@ -8,3 +8,4 @@
 .externalNativeBuild
 .cxx
 local.properties
+sh.exe.stackdump

testomania/src/main/java/com/earth/testomania/MainActivity.kt

@@ -3,16 +3,16 @@ package com.earth.testomania
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.activity.viewModels
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material.Scaffold
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.rememberNavController
+import com.earth.testomania.driving_licence.presentation.DrivingLicenceViewModel
 import com.earth.testomania.presentation.TopBar
-import com.earth.testomania.technical.presentation.QuizViewModel
 import com.earth.testomania.ui.theme.TestomaniaTheme
 import com.ramcosta.composedestinations.DestinationsNavHost
 import com.ramcosta.composedestinations.rememberNavHostEngine
@@ -23,7 +23,8 @@ import dagger.hilt.android.AndroidEntryPoint
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-
+        val viewModel by viewModels<DrivingLicenceViewModel>()
+        viewModel.startNewTest()
         setContent {
             TestomaniaTheme {
                 Testomania()

testomania/src/main/java/com/earth/testomania/di/AppModule.kt

@@ -21,7 +21,7 @@ object AppModule {
 
     @Provides
     @Singleton
-    fun jsonSerializer(): Moshi {
+    fun provideMoshi(): Moshi {
         return Moshi.Builder()
             .addLast(KotlinJsonAdapterFactory())
             .build()

testomania/src/main/java/com/earth/testomania/driving_licence/data/DrivingLicenceDao.kt

@@ -0,0 +1,24 @@
+package com.earth.testomania.driving_licence.data
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy.REPLACE
+import androidx.room.Query
+import com.earth.testomania.driving_licence.data.entity.DrivingLicenceQuestionEntity
+
+@Dao
+interface DrivingLicenceDao {
+
+    @Insert(onConflict = REPLACE)
+    suspend fun insertQuestions(items: List<DrivingLicenceQuestionEntity>)
+
+    @Query("DELETE FROM drivinglicencequestionentity WHERE 1 ")
+    suspend fun deleteAllQuestions()
+
+    @Query("SELECT * From drivinglicencequestionentity LIMIT :count")
+    suspend fun getQuestionsForTest(count: Int): List<DrivingLicenceQuestionEntity>
+
+    @Query("SELECT * From drivinglicencequestionentity WHERE id = :id")
+    suspend fun getSingleQuestions(id: Int): DrivingLicenceQuestionEntity?
+
+}

testomania/src/main/java/com/earth/testomania/driving_licence/data/DrivingLicenceDatabase.kt

@@ -0,0 +1,57 @@
+package com.earth.testomania.driving_licence.data
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.RoomDatabase
+import androidx.sqlite.db.SupportSQLiteDatabase
+import com.earth.testomania.R
+import com.earth.testomania.driving_licence.data.dto.DrivingLicenceQuestionDto
+import com.earth.testomania.driving_licence.data.entity.DrivingLicenceQuestionEntity
+import com.earth.testomania.driving_licence.data.util.AnswersListConverter
+import com.squareup.moshi.JsonAdapter
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.adapter
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import okio.buffer
+import okio.source
+import javax.inject.Inject
+import javax.inject.Provider
+
+@Database(
+    entities = [DrivingLicenceQuestionEntity::class],
+    version = 1
+)
+abstract class DrivingLicenceDatabase : RoomDatabase() {
+
+    abstract val dao: DrivingLicenceDao
+
+    class CallBack @Inject constructor(
+        private val database: Provider<DrivingLicenceDatabase>,
+        private val applicationScope: CoroutineScope,
+        @ApplicationContext private val appContext: Context,
+        private val moshi: Moshi,
+        private val converter: AnswersListConverter,
+    ) : RoomDatabase.Callback() {
+
+        override fun onCreate(db: SupportSQLiteDatabase) {
+            super.onCreate(db)
+
+            val dao = database.get().dao
+            applicationScope.launch(Dispatchers.IO) {
+                dao.insertQuestions(tests)
+            }
+        }
+
+        @OptIn(ExperimentalStdlibApi::class)
+        private val tests by lazy {
+            val rawJson = appContext.resources.openRawResource(R.raw.driving_licence_tests)
+            val adapter: JsonAdapter<List<DrivingLicenceQuestionDto>> = moshi.adapter()
+            adapter.fromJson(rawJson.source().buffer())?.map { dto ->
+                dto.toDrivingLicenceEntity(converter)
+            } ?: listOf()
+        }
+    }
+}

testomania/src/main/java/com/earth/testomania/driving_licence/data/dto/Answer.kt

@@ -0,0 +1,7 @@
+package com.earth.testomania.driving_licence.data.dto
+
+data class Answer(
+    val answer: String,
+    val correct: Boolean,
+    val id: Int
+)

testomania/src/main/java/com/earth/testomania/driving_licence/data/dto/DrivingLicenceQuestionDto.kt

@@ -0,0 +1,25 @@
+package com.earth.testomania.driving_licence.data.dto
+
+import com.earth.testomania.driving_licence.data.entity.DrivingLicenceQuestionEntity
+import com.earth.testomania.driving_licence.data.util.AnswersListConverter
+
+data class DrivingLicenceQuestionDto(
+    val answers: List<Answer>,
+    val categoryIds: List<Int>,
+    val description: String?,
+    val id: Int,
+    val image: String?,
+    val imageType: Int?,
+    val question: String,
+    val subjectId: Int?
+) {
+    fun toDrivingLicenceEntity(typeConverter: AnswersListConverter): DrivingLicenceQuestionEntity {
+        return DrivingLicenceQuestionEntity(
+            id = id,
+            answers = typeConverter.fromAnswersToJson(answers),
+            description = description,
+            image = image,
+            question = question
+        )
+    }
+}

testomania/src/main/java/com/earth/testomania/driving_licence/data/entity/DrivingLicenceQuestionEntity.kt

@@ -0,0 +1,24 @@
+package com.earth.testomania.driving_licence.data.entity
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import com.earth.testomania.driving_licence.data.util.AnswersListConverter
+import com.earth.testomania.driving_licence.domain.model.DrivingLicenceQuestion
+
+
+@Entity(tableName = "drivinglicencequestionentity")
+data class DrivingLicenceQuestionEntity(
+    @PrimaryKey val id: Int,
+    val answers: String,
+    val description: String?,
+    val image: String?,
+    val question: String,
+) {
+    fun toDomainModel(typeConverter: AnswersListConverter) = DrivingLicenceQuestion(
+        id = id,
+        answers = typeConverter.fromJsonToAnswers(answers),
+        description = description,
+        image = image,
+        question = question,
+    )
+}

testomania/src/main/java/com/earth/testomania/driving_licence/data/repository/DrivingLicenceRepoImpl.kt

@@ -0,0 +1,14 @@
+package com.earth.testomania.driving_licence.data.repository
+
+import com.earth.testomania.driving_licence.data.DrivingLicenceDao
+import com.earth.testomania.driving_licence.data.entity.DrivingLicenceQuestionEntity
+import com.earth.testomania.driving_licence.domain.repository.DrivingLicenceRepo
+
+class DrivingLicenceRepoImpl(
+    private val dao: DrivingLicenceDao
+) : DrivingLicenceRepo {
+
+    override suspend fun getQuestions(count: Int): List<DrivingLicenceQuestionEntity> {
+        return dao.getQuestionsForTest(count = count)
+    }
+}

testomania/src/main/java/com/earth/testomania/driving_licence/data/util/AnswersListConverter.kt

@@ -0,0 +1,21 @@
+package com.earth.testomania.driving_licence.data.util
+
+import com.earth.testomania.driving_licence.data.dto.Answer
+import com.squareup.moshi.Types
+
+class AnswersListConverter(private val jsonParser: JsonParser) {
+
+    fun fromJsonToAnswers(json: String): List<Answer> {
+        return jsonParser.fromJson<List<Answer>>(
+            json = json,
+            type = Types.newParameterizedType(List::class.java, Answer::class.java)
+        ) ?: emptyList()
+    }
+
+    fun fromAnswersToJson(answers: List<Answer>): String {
+        return jsonParser.toJson(
+            obj = answers,
+            type = Types.newParameterizedType(List::class.java, Answer::class.java)
+        ) ?: "[]"
+    }
+}

testomania/src/main/java/com/earth/testomania/driving_licence/data/util/JsonParser.kt

@@ -0,0 +1,10 @@
+package com.earth.testomania.driving_licence.data.util
+
+import java.lang.reflect.Type
+
+interface JsonParser {
+
+    fun <T> fromJson(json: String, type: Type): T?
+
+    fun <T> toJson(obj: T, type: Type): String?
+}

testomania/src/main/java/com/earth/testomania/driving_licence/data/util/MoshiParser.kt

@@ -0,0 +1,19 @@
+package com.earth.testomania.driving_licence.data.util
+
+import com.squareup.moshi.JsonAdapter
+import com.squareup.moshi.Moshi
+import java.lang.reflect.Type
+
+class MoshiParser(
+    private val moshi: Moshi
+): JsonParser {
+    override fun <T> fromJson(json: String, type: Type): T? {
+        val adapter: JsonAdapter<T> = moshi.adapter(type)
+        return adapter.fromJson(json)
+    }
+
+    override fun <T> toJson(obj: T, type: Type): String? {
+        val adapter: JsonAdapter<T> = moshi.adapter(type)
+        return adapter.toJson(obj)
+    }
+}

testomania/src/main/java/com/earth/testomania/driving_licence/di/DrivingLicenceModule.kt

@@ -0,0 +1,74 @@
+package com.earth.testomania.driving_licence.di
+
+import android.app.Application
+import androidx.room.Room
+import com.earth.testomania.driving_licence.data.DrivingLicenceDao
+import com.earth.testomania.driving_licence.data.DrivingLicenceDatabase
+import com.earth.testomania.driving_licence.data.repository.DrivingLicenceRepoImpl
+import com.earth.testomania.driving_licence.data.util.AnswersListConverter
+import com.earth.testomania.driving_licence.data.util.JsonParser
+import com.earth.testomania.driving_licence.data.util.MoshiParser
+import com.earth.testomania.driving_licence.domain.repository.DrivingLicenceRepo
+import com.earth.testomania.driving_licence.domain.use_case.GetDrivingLicenceQuestionsUseCase
+import com.squareup.moshi.Moshi
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.SupervisorJob
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object DrivingLicenceModule {
+
+
+    @Provides
+    @Singleton
+    fun provideDrivingLicenceDatabase(
+        app: Application,
+        callBack: DrivingLicenceDatabase.CallBack
+    ): DrivingLicenceDatabase {
+        return Room
+            .databaseBuilder(app, DrivingLicenceDatabase::class.java, "driving_licence_db")
+            .addCallback(callBack)
+            .build()
+    }
+
+
+    @Provides
+    @Singleton
+    fun provideDrivingLicenceDao(db: DrivingLicenceDatabase): DrivingLicenceDao {
+        return db.dao
+    }
+
+    @Provides
+    @Singleton
+    fun provideGetDrivingLicenceQuestions(
+        converter: AnswersListConverter,
+        repo: DrivingLicenceRepo
+    ): GetDrivingLicenceQuestionsUseCase =
+        GetDrivingLicenceQuestionsUseCase(converter, repo)
+
+    @Provides
+    @Singleton
+    fun provideDrivingLicenceRepo(dao: DrivingLicenceDao): DrivingLicenceRepo =
+        DrivingLicenceRepoImpl(dao)
+
+    @Provides
+    @Singleton
+    fun provideApplicationScope() = CoroutineScope(SupervisorJob())
+
+    @Provides
+    @Singleton
+    fun provideJsonParser(moshi: Moshi): JsonParser {
+        return MoshiParser(moshi)
+    }
+
+    @Provides
+    @Singleton
+    fun provideAnswersListConverter(jsonParser: JsonParser): AnswersListConverter {
+        return AnswersListConverter(jsonParser)
+    }
+}

testomania/src/main/java/com/earth/testomania/driving_licence/domain/model/DrivingLicenceQuestion.kt

@@ -0,0 +1,11 @@
+package com.earth.testomania.driving_licence.domain.model
+
+import com.earth.testomania.driving_licence.data.dto.Answer
+
+data class DrivingLicenceQuestion(
+    val answers: List<Answer>,
+    val description: String?,
+    val id: Int,
+    val image: String?,
+    val question: String,
+)

testomania/src/main/java/com/earth/testomania/driving_licence/domain/repository/DrivingLicenceRepo.kt

@@ -0,0 +1,8 @@
+package com.earth.testomania.driving_licence.domain.repository
+
+import com.earth.testomania.driving_licence.data.entity.DrivingLicenceQuestionEntity
+
+interface DrivingLicenceRepo {
+
+    suspend fun getQuestions(count: Int): List<DrivingLicenceQuestionEntity>
+}

testomania/src/main/java/com/earth/testomania/driving_licence/domain/use_case/GetDrivingLicenceQuestionsUseCase.kt

@@ -0,0 +1,27 @@
+package com.earth.testomania.driving_licence.domain.use_case
+
+import com.earth.testomania.core.DataState
+import com.earth.testomania.driving_licence.data.util.AnswersListConverter
+import com.earth.testomania.driving_licence.domain.model.DrivingLicenceQuestion
+import com.earth.testomania.driving_licence.domain.repository.DrivingLicenceRepo
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
+
+class GetDrivingLicenceQuestionsUseCase(
+    private val converter: AnswersListConverter,
+    private val repository: DrivingLicenceRepo
+) {
+
+    operator fun invoke(): Flow<DataState<List<DrivingLicenceQuestion>>> = flow {
+        emit(DataState.Loading())
+        emit(DataState.Success(
+            null,
+            repository.getQuestions(DEFAULT_QUESTION_COUNT)
+                .map { it.toDomainModel(converter) }
+        ))
+    }
+
+    companion object {
+        const val DEFAULT_QUESTION_COUNT = 30
+    }
+}