fix: data и domain слои получения списка посещений + начало создания пагинации

app/build.gradle.kts

@@ -1,3 +1,5 @@
+import com.android.sdklib.AndroidVersion.VersionCodes.UPSIDE_DOWN_CAKE
+
 plugins {
     androidApplication
     jetbrainsKotlinSerialization version Version.Kotlin.language
@@ -9,12 +11,12 @@ plugins {
 val packageName = "ru.myitschool.work"
 android {
     namespace = packageName
-    compileSdk = 35
+    compileSdk = UPSIDE_DOWN_CAKE
 
     defaultConfig {
         applicationId = packageName
         minSdk = 31
-        targetSdk = 35
+        targetSdk = UPSIDE_DOWN_CAKE
         versionCode = 1
         versionName = "1.0"
 
@@ -38,12 +40,11 @@ android {
 dependencies {
     implementation(libs.androidx.appcompat)
     implementation(libs.material)
-    implementation(libs.androidx.activity.ktx)
     implementation(libs.androidx.constraintlayout)
     implementation(libs.androidx.annotation)
     implementation(libs.androidx.lifecycle.livedata.ktx)
     implementation(libs.androidx.lifecycle.viewmodel.ktx)
-    defaultLibrary()
+
 
     implementation(Dependencies.AndroidX.activity)
     implementation(Dependencies.AndroidX.fragment)
@@ -65,10 +66,10 @@ dependencies {
     implementation(libs.androidx.camera.lifecycle)
     implementation(libs.androidx.camera.view)
     implementation(libs.androidx.camera.mlkit.vision)
-
-    val hilt = "2.51.1"
+    implementation(libs.androidx.paging.runtime.ktx)
+    defaultLibrary()
     implementation(libs.hilt.android)
-    kapt("com.google.dagger:hilt-android-compiler:$hilt")
+    kapt(libs.hilt.android.compiler)
 }
 
 kapt {

app/src/main/java/ru/myitschool/work/core/Constants.kt

@@ -1,5 +1,5 @@
 package ru.myitschool.work.core
 // БЕРИТЕ И ИЗМЕНЯЙТЕ ХОСТ ТОЛЬКО ЗДЕСЬ И НЕ БЕРИТЕ ИЗ ДРУГИХ МЕСТ. ФАЙЛ ПЕРЕМЕЩАТЬ НЕЛЬЗЯ
 object Constants {
-    const val SERVER_ADDRESS = "http://10.0.2.2:8080"
+    const val SERVER_ADDRESS = "http://192.168.1.145:8080"
 }

app/src/main/java/ru/myitschool/work/data/UserDataStoreManager.kt

@@ -12,6 +12,7 @@ class UserDataStoreManager(private val context: Context) {
 
     companion object {
         private val USERNAME_KEY = stringPreferencesKey("username")
+        private val ROLE_KEY = stringPreferencesKey("role")
 
         fun getInstance(context: Context): UserDataStoreManager {
             return UserDataStoreManager(context.applicationContext)
@@ -21,12 +22,19 @@ class UserDataStoreManager(private val context: Context) {
     val usernameFlow: Flow<String> = context.applicationContext.dataStore.data.map { prefs ->
         prefs[USERNAME_KEY] ?: ""
     }
+    val roleFlow: Flow<String> = context.applicationContext.dataStore.data.map{ prefs ->
+        prefs[ROLE_KEY] ?: ""
+    }
     suspend fun saveUsername(username: String) {
         context.dataStore.edit { prefs ->
             prefs[USERNAME_KEY] = username
         }
     }
-
+    suspend fun saveRole(role: String){
+        context.dataStore.edit { prefs ->
+            prefs[ROLE_KEY] = role
+        }
+    }
     suspend fun clearUsername() {
         context.applicationContext.dataStore.edit { it.clear() }
     }

app/src/main/java/ru/myitschool/work/data/dto/VisitDTO.kt

@@ -0,0 +1,14 @@
+package ru.myitschool.work.data.dto
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import ru.myitschool.work.utils.DateSerializer
+import java.util.Date
+
+@Serializable
+data class VisitDTO(
+    @SerialName("scanTime")
+    @Serializable(with = DateSerializer::class) val scanTime : Date?,
+    @SerialName("readerId") val readerId: Long?,
+    @SerialName("type") val type: String?
+)

app/src/main/java/ru/myitschool/work/data/dto/VisitListPagingDTO.kt

@@ -0,0 +1,9 @@
+package ru.myitschool.work.data.dto
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class VisitListPagingDTO(
+    @SerialName("content") val content : List<VisitDTO>?
+)

app/src/main/java/ru/myitschool/work/data/visitsList/VisitListNetworkDataSource.kt

@@ -0,0 +1,32 @@
+package ru.myitschool.work.data.visitsList
+
+import android.content.Context
+import io.ktor.client.call.body
+import io.ktor.client.request.get
+import io.ktor.client.statement.bodyAsText
+import io.ktor.http.HttpStatusCode
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.withContext
+import ru.myitschool.work.core.Constants
+import ru.myitschool.work.data.UserDataStoreManager
+import ru.myitschool.work.data.dto.VisitListPagingDTO
+import ru.myitschool.work.utils.NetworkModule
+
+class VisitListNetworkDataSource(
+    context: Context
+){
+    private val client = NetworkModule.httpClient
+    private val userDataStoreManager = UserDataStoreManager.getInstance(context)
+    suspend fun getList(pageNum: Int, pageSize: Int):Result<VisitListPagingDTO> = withContext(Dispatchers.IO){
+        runCatching {
+            val username = userDataStoreManager.usernameFlow.first()
+            val result = client.get("${Constants.SERVER_ADDRESS}/api/$username/visits?page=$pageNum&size=$pageSize")
+
+            if (result.status != HttpStatusCode.OK) {
+                error("Status ${result.status}")
+            }
+            result.body()
+        }
+    }
+}

app/src/main/java/ru/myitschool/work/data/visitsList/VisitListRepoImpl.kt

@@ -0,0 +1,21 @@
+package ru.myitschool.work.data.visitsList
+
+import ru.myitschool.work.domain.entities.UserEntity
+import ru.myitschool.work.domain.entities.VisitEntity
+import ru.myitschool.work.domain.visitsList.VisitListRepo
+
+class VisitListRepoImpl(
+    private val networkDataSource: VisitListNetworkDataSource
+) : VisitListRepo {
+    override suspend fun getList(pageNum: Int, pageSize: Int): Result<List<VisitEntity>> {
+        return networkDataSource.getList(pageNum, pageSize).map { pagingDTO ->
+            pagingDTO.content?.mapNotNull { dto->
+                VisitEntity(
+                    scanTime = dto.scanTime ?: return@mapNotNull null,
+                    readerId = dto.readerId ?: return@mapNotNull null,
+                    type = dto.type ?: return@mapNotNull null
+                )
+            }?: return Result.failure(IllegalStateException("List parse error"))
+        }
+    }
+}

app/src/main/java/ru/myitschool/work/domain/entities/VisitEntity.kt

@@ -0,0 +1,9 @@
+package ru.myitschool.work.domain.entities
+
+import java.util.Date
+
+data class VisitEntity(
+    val scanTime : Date,
+    val readerId: Long,
+    val type: String
+)

app/src/main/java/ru/myitschool/work/domain/visitsList/GetVisitListUseCase.kt

@@ -0,0 +1,7 @@
+package ru.myitschool.work.domain.visitsList
+
+class GetVisitListUseCase(
+    private val repo: VisitListRepo
+) {
+    suspend operator fun invoke(pageNum : Int, pageSize: Int) = repo.getList(pageNum, pageSize)
+}

app/src/main/java/ru/myitschool/work/domain/visitsList/VisitListRepo.kt

@@ -0,0 +1,8 @@
+package ru.myitschool.work.domain.visitsList
+
+import ru.myitschool.work.domain.entities.UserEntity
+import ru.myitschool.work.domain.entities.VisitEntity
+
+interface VisitListRepo {
+    suspend fun getList(pageNum : Int, pageSize: Int) : Result<List<VisitEntity>>
+}

app/src/main/java/ru/myitschool/work/ui/login/LoginFragment.kt

@@ -42,12 +42,27 @@ class LoginFragment : Fragment(R.layout.fragment_login) {
         lifecycleScope.launch {
             viewModel.state.collect { state ->
                 with(binding) {
-                    error.visibility = if (state is LoginViewModel.State.Error) View.VISIBLE else View.GONE
-                    username.isEnabled = state !is LoginViewModel.State.Loading
-
-                    if (state is LoginViewModel.State.Success) {
-                        findNavController().navigate(R.id.mainFragment)
+                    when(state){
+                        is LoginViewModel.State.Error -> {
+                            error.visibility = View.VISIBLE
+                            loading.visibility = View.GONE
+                            username.isEnabled = true
+                        }
+                        is LoginViewModel.State.Idle -> {
+                            loading.visibility = View.GONE
+                            error.visibility = View.GONE
+                            username.isEnabled = true
+                        }
+                        is LoginViewModel.State.Loading -> {
+                            loading.visibility = View.VISIBLE
+                            error.visibility = View.GONE
+                            username.isEnabled = false
+                        }
+                        is LoginViewModel.State.Success -> {
+                            findNavController().navigate(R.id.mainFragment)
+                        }
                     }
+
                 }
             }
         }

app/src/main/java/ru/myitschool/work/ui/main/VisitListPagingSource.kt

@@ -0,0 +1,20 @@
+package ru.myitschool.work.ui.main
+
+import androidx.paging.PagingSource
+import androidx.paging.PagingState
+import ru.myitschool.work.domain.entities.VisitEntity
+
+class VisitListPagingSource(
+    private val request: suspend(pageNum: Int, pageSize: Int) ->Result<List<VisitEntity>>
+) : PagingSource<Int, VisitEntity>() {
+    override fun getRefreshKey(state: PagingState<Int, VisitEntity>): Int? {
+        return state.anchorPosition?.let{
+            state.closestPageToPosition(it)?.prevKey?.plus(1) ?:
+            state.closestPageToPosition(it)?.nextKey?.minus(1)
+        }
+    }
+
+    override suspend fun load(params: LoadParams<Int>): LoadResult<Int, VisitEntity> {
+        TODO("Not yet implemented")
+    }
+}

app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultViewModel.kt

@@ -23,9 +23,9 @@ class QrResultViewModel(
     val state: StateFlow<State> = _state.asStateFlow()
 
     sealed class State{
-        object Success : State()
-        object Loading : State()
-        object Error : State()
+        data object Success : State()
+        data object Loading : State()
+        data object Error : State()
     }
     fun openDoor(openEntity: OpenEntity){
         _state.value = State.Loading

app/src/main/java/ru/myitschool/work/utils/DateSerializer.kt

@@ -0,0 +1,25 @@
+package ru.myitschool.work.utils
+
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.descriptors.PrimitiveKind
+import kotlinx.serialization.descriptors.PrimitiveSerialDescriptor
+import kotlinx.serialization.descriptors.SerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+object DateSerializer : KSerializer<Date> {
+    private val dateFormat = SimpleDateFormat("yyyy-MM-dd", Locale.US)
+    override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("Date", PrimitiveKind.STRING)
+
+
+    override fun deserialize(decoder: Decoder): Date {
+        return dateFormat.parse(decoder.decodeString())!!
+    }
+
+    override fun serialize(encoder: Encoder, value: Date) {
+        encoder.encodeString(dateFormat.format(value))
+    }
+}

gradle/libs.versions.toml

@@ -17,6 +17,7 @@ lifecycleLivedataKtx = "2.8.7"
 lifecycleViewmodelKtx = "2.8.7"
 navigationFragmentKtx = "2.8.7"
 navigationUiKtx = "2.8.7"
+pagingRuntimeKtx = "3.3.6"
 picasso = "2.8"
 [libraries]
 androidx-activity-ktx = { module = "androidx.activity:activity-ktx", version.ref = "activityKtx" }
@@ -29,8 +30,10 @@ androidx-camera-view = { module = "androidx.camera:camera-view", version.ref = "
 androidx-datastore-preferences = { module = "androidx.datastore:datastore-preferences", version.ref = "datastorePreferences" }
 androidx-navigation-ui-ktx = { module = "androidx.navigation:navigation-ui-ktx", version.ref = "navigationUiKtx" }
 androidx-navigation-fragment-ktx = { module = "androidx.navigation:navigation-fragment-ktx", version.ref = "navigationFragmentKtx" }
+androidx-paging-runtime-ktx = { module = "androidx.paging:paging-runtime-ktx", version.ref = "pagingRuntimeKtx" }
 barcode-scanning = { module = "com.google.mlkit:barcode-scanning", version.ref = "barcodeScanning" }
 hilt-android = { module = "com.google.dagger:hilt-android", version.ref = "hilt" }
+hilt-android-compiler = { module = "com.google.dagger:hilt-android-compiler", version.ref = "hilt" }
 kotlinx-serialization-json = { module = "org.jetbrains.kotlinx:kotlinx-serialization-json", version.ref = "kotlinxSerializationJson" }
 ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktorClientContentNegotiation" }
 ktor-client-cio = { module = "io.ktor:ktor-client-cio", version.ref = "ktorClientContentNegotiation" }