Homework 4

EpicDatabseExample/app/src/main/java/com/example/epicdatabaseexample/db/NoteDatabase.kt

@@ -12,7 +12,7 @@ import com.example.epicdatabaseexample.db.note.NoteDao
 import com.example.epicdatabaseexample.db.note.NoteEntity
 
 @Database(
-    version = 2,
+    version = 3,
     exportSchema = false,
     entities = [
         NoteEntity::class,
@@ -49,6 +49,13 @@ abstract class NoteDatabase : RoomDatabase() {
                 }
             },
             // TODO Добавить миграцию.
+            object : Migration(2, 3) {
+                override fun migrate(database: SupportSQLiteDatabase) {
+                    database.execSQL("ALTER TABLE $NOTE_TABLE " +
+                            "ADD COLUMN ${NoteEntity.COLUMN_IS_COMPLETED} INTEGER NOT NULL " +
+                            "DEFAULT 0")
+                }
+            }
         )
 
         private fun createDatabaseInstance(application: Application): NoteDatabase {

EpicDatabseExample/app/src/main/java/com/example/epicdatabaseexample/db/note/NoteDao.kt

@@ -30,4 +30,9 @@ abstract class NoteDao {
     //  Что можно указать в качестве возвращаемого типа?
     //  Напомню, что выше есть метод observeNoteList, который будет вызываться при любом
     //  изменении списка в Базе Данных.
+    @Update
+    abstract fun updateNote(note: NoteEntity): Completable
+
+    @Update
+    abstract fun updateAll(notes: List<NoteEntity>): Completable
 }

EpicDatabseExample/app/src/main/java/com/example/epicdatabaseexample/db/note/NoteEntity.kt

@@ -26,12 +26,15 @@ data class NoteEntity(
     //  В SQLite не поддерживается Boolean, но в Room его можно использовать.
     //  Поэтому поле делаем именно Boolean, а при добавлении миграции - нужно будет погуглить,
     //  как обойти это ограничение.
+    @ColumnInfo(name = COLUMN_IS_COMPLETED)
+    var isCompleted: Boolean = false
 ) {
 
     companion object {
         const val COLUMN_ID = "id"
         const val COLUMN_TITLE = "title"
         const val COLUMN_DESCRIPTION = "descriptions"
         const val COLUMN_PERSON_NAME = "person_name"
+        const val COLUMN_IS_COMPLETED = "is_completed"
     }
 }

EpicDatabseExample/app/src/main/java/com/example/epicdatabaseexample/ui/note_list/NoteDiffUtilCallback.kt

@@ -5,11 +5,24 @@ import com.example.epicdatabaseexample.db.note.NoteEntity
 
 class NoteDiffUtilCallback : DiffUtil.ItemCallback<NoteEntity>() {
 
+    data class Payload(
+        val isCompleteChanged: Boolean
+    )
+
     override fun areItemsTheSame(oldItem: NoteEntity, newItem: NoteEntity): Boolean {
         return oldItem.id == newItem.id
     }
 
     override fun areContentsTheSame(oldItem: NoteEntity, newItem: NoteEntity): Boolean {
-        return false
+        return oldItem == newItem
+    }
+
+    //из лекции
+    override fun getChangePayload(oldItem: NoteEntity, newItem: NoteEntity): Any? {
+        val isCompletedChanged = oldItem.isCompleted != newItem.isCompleted
+        return if (isCompletedChanged)
+            Payload(isCompletedChanged)
+        else null //можно удалить
     }
+
 }

EpicDatabseExample/app/src/main/java/com/example/epicdatabaseexample/ui/note_list/NoteListAdapter.kt

@@ -21,14 +21,32 @@ class NoteListAdapter(
         }
         holder.personName.text = note.personName
         // TODO Раскомментировать, после добавления нового поля в NoteEntity.
-//        holder.isCompleted.setOnClickListener {
-//            onIsCompletedClick.invoke(note.copy(
-//                isCompleted = !note.isCompleted
-//            ))
-//        }
-//        val isCompletedChanged = note.isCompleted != holder.isCompleted.isChecked
-//        if (isCompletedChanged) {
-//            holder.isCompleted.isChecked = note.isCompleted
-//        }
+        holder.isCompleted.setOnClickListener {
+            onIsCompletedClick.invoke(note.copy(
+                isCompleted = !note.isCompleted
+            ))
+        }
+        val isCompletedChanged = note.isCompleted != holder.isCompleted.isChecked
+        if (isCompletedChanged) {
+            holder.isCompleted.isChecked = note.isCompleted
+        }
+    }
+
+    //из лекции
+    override fun onBindViewHolder(
+        holder: NoteViewHolder,
+        position: Int,
+        payloads: MutableList<Any>
+    ) {
+        val payload: NoteDiffUtilCallback.Payload? =
+            payloads.firstOrNull() as? NoteDiffUtilCallback.Payload
+        if (payload != null) {
+            if (payload.isCompleteChanged) {
+                val note = getItem(position)
+                holder.isCompleted.isChecked = note.isCompleted
+            }
+        } else {
+            super.onBindViewHolder(holder, position, payloads)
+        }
     }
 }

EpicDatabseExample/app/src/main/java/com/example/epicdatabaseexample/ui/note_list/NoteListViewModel.kt

@@ -65,6 +65,10 @@ class NoteListViewModel constructor(
 
     fun onIsCompletedClick(note: NoteEntity) {
         // TODO Добавить вызов noteDao для обновления элемента в таблице.
+        compositeDisposable.add(noteDao.updateNote(note)
+            .subscribeOn(Schedulers.io())
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe())
     }
 
     override fun onCleared() {

HomeWorkNetwork/app/build.gradle

@@ -10,7 +10,7 @@ android {
     defaultConfig {
 
         buildConfigField "String", "API_BASE_URL", '"api.themoviedb.org"'
-        buildConfigField "String", "API_KEY", '"/*ваш ap_key*/"'
+        buildConfigField "String", "API_KEY", '"8c36877bfc3c8db80235da73a301a630"'
         buildConfigField "String", "API_IMAGE_BASE_URL", '"https://image.tmdb.org/t/p/w500"'
 
         applicationId "com.pg.homeworknetwork"
@@ -46,4 +46,19 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.4.1'
     implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
+
+    //KTOR
+    implementation "io.ktor:ktor-client-core:1.6.7"
+    implementation "io.ktor:ktor-client-android:1.6.7"
+    implementation 'io.ktor:ktor-client-serialization:1.6.7'
+    implementation 'org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.2'
+    implementation 'io.ktor:ktor-client-logging-jvm:1.6.7'
+
+
+    //Coroutine
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.0'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.0'
+
+    //test
+    implementation 'androidx.test.ext:junit-ktx:1.1.3'
 }

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/Models.kt

@@ -1,5 +1,29 @@
 package com.pg.homeworknetwork
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
 
-class Movies
+@Serializable
+data class Movies (
+        @SerialName("page")
+        val page: Int,
+        @SerialName("results")
+        val movies: MutableList<Movie>
+)
 
-class Movie
+@Serializable
+data class Movie (
+        @SerialName("id")
+        val id: Int,
+        @SerialName("title")
+        val title: String,
+        @SerialName("poster_path")
+        val posterPath: String,
+        @SerialName("original_title")
+        val originalTitle: String?,
+        @SerialName("overview")
+        val overview: String?,
+        @SerialName("popularity")
+        val popularity: Double?,
+        @SerialName("release_date")
+        val releaseDate: String?
+)

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/MovieDetailFragment.kt

@@ -10,6 +10,8 @@ import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.FragmentTransaction
 import coil.load
 import coil.transform.RoundedCornersTransformation
+import kotlinx.coroutines.*
+import kotlin.coroutines.CoroutineContext
 
 class MovieDetailFragment : Fragment(R.layout.fragment_movie_preview) {
     lateinit var poster: ImageView
@@ -18,6 +20,9 @@ class MovieDetailFragment : Fragment(R.layout.fragment_movie_preview) {
     lateinit var popularity: TextView
     lateinit var releaseDate: TextView
 
+    private val context: CoroutineContext = SupervisorJob() + Dispatchers.IO
+    private val scope = CoroutineScope(context)
+
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         with(view) {
@@ -29,14 +34,19 @@ class MovieDetailFragment : Fragment(R.layout.fragment_movie_preview) {
         }
 
         val movieId = arguments?.getInt(ARG_ID) ?: 550
-        val movie = //получаем фильм
-        poster.load("${BuildConfig.API_IMAGE_BASE_URL}${movie.posterPath}") {
-            transformations(RoundedCornersTransformation(16f))
+        scope.launch {
+            //TODO получаем фильм
+            val movie = MovieApi().getMovieById(movieId)
+            withContext(Dispatchers.Main) {
+                poster.load("${BuildConfig.API_IMAGE_BASE_URL}${movie.posterPath}") {
+                    transformations(RoundedCornersTransformation(16f))
+                }
+                originalTitle.text = movie.originalTitle
+                overview.text = movie.overview
+                popularity.text = movie.popularity.toString()
+                releaseDate.text = movie.releaseDate
+            }
         }
-        originalTitle.text = movie.originalTitle
-        overview.text = movie.overview
-        popularity.text = movie.popularity.toString()
-        releaseDate.text = movie.releaseDate
 
         activity?.onBackPressedDispatcher?.addCallback(this.viewLifecycleOwner, object : OnBackPressedCallback(true) {
             override fun handleOnBackPressed() {

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/MovieListFragment.kt

@@ -7,9 +7,16 @@ import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.FragmentTransaction
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import kotlin.coroutines.CoroutineContext
 
 class MovieListFragment : Fragment(R.layout.fragment_movie_list) {
     lateinit var recycler: RecyclerView
+    private val context: CoroutineContext = SupervisorJob() + Dispatchers.IO
+    private val scope = CoroutineScope(context)
 
     private val goToDetails = object : MovieItemAdapter.IOnItemClick {
         override fun onItemClick(movie: Movie) {
@@ -31,8 +38,11 @@ class MovieListFragment : Fragment(R.layout.fragment_movie_list) {
             }
         }
         val adapter = (recycler.adapter as MovieItemAdapter)
-        val movies = //получаем фильмы
-        adapter.submitList(movies)
+        //TODO получаем фильмы
+        scope.launch {
+            val movies = MovieApi().getListMovies()
+            adapter.submitList(movies.movies)
+        }
         super.onViewCreated(view, savedInstanceState)
     }
 

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/Network.kt

@@ -1,5 +1,36 @@
 package com.pg.homeworknetwork
 
-class Api {
+import io.ktor.client.*
+import io.ktor.client.engine.android.*
+import io.ktor.client.features.json.*
+import io.ktor.client.features.json.serializer.*
+import io.ktor.client.request.*
+import kotlinx.serialization.json.Json as serialJson
 
+class MovieApi {
+    private val client = HttpClient(Android){
+        install(JsonFeature) {
+            serializer = KotlinxSerializer(serialJson {
+                prettyPrint = true
+                isLenient = true
+                ignoreUnknownKeys = true
+            })
+        }
+    }
+
+    suspend fun getListMovies(): Movies = client.get(
+            host = BuildConfig.API_BASE_URL,
+            path = "3/movie/popular"
+        ) {
+            parameter("api_key", BuildConfig.API_KEY)
+            parameter("language", "ru")
+        }
+
+    suspend fun getMovieById(id: Int): Movie = client.get(
+            host = BuildConfig.API_BASE_URL,
+            path = "3/movie/${id}"
+        ) {
+            parameter("api_key", BuildConfig.API_KEY)
+            parameter("language", "ru")
+        }
 }

HomeworkTemplate/build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '7.1.1' apply false
-    id 'com.android.library' version '7.1.1' apply false
+    id 'com.android.application' version '7.1.2' apply false
+    id 'com.android.library' version '7.1.2' apply false
     id 'org.jetbrains.kotlin.android' version '1.6.10' apply false
 }