Третьяков В.Н. NetworkHomework

HomeWorkNetwork/app/build.gradle

@@ -7,10 +7,14 @@ plugins {
 android {
     compileSdk 31
 
+    Properties localProperties = new Properties()
+    localProperties.load(project.rootProject.file('local.properties').newDataInputStream())
+
     defaultConfig {
 
-        buildConfigField "String", "API_BASE_URL", '"api.themoviedb.org"'
-        buildConfigField "String", "API_KEY", '"/*ваш ap_key*/"'
+        buildConfigField "String", "API_BASE_URL", '"api.themoviedb.org/3"'
+        /* API_KEY защищен в local.properties */
+        buildConfigField "String", "API_KEY", "\"${localProperties.getProperty('TMDB_API_KEY')}\""
         buildConfigField "String", "API_IMAGE_BASE_URL", '"https://image.tmdb.org/t/p/w500"'
 
         applicationId "com.pg.homeworknetwork"
@@ -46,4 +50,15 @@ 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
+    def ktor_version = "1.6.8"
+    implementation "io.ktor:ktor-client-core:$ktor_version"
+    implementation "io.ktor:ktor-client-android:$ktor_version"
+    implementation "io.ktor:ktor-client-serialization:$ktor_version"
+    implementation "io.ktor:ktor-client-logging:$ktor_version"
+    implementation "ch.qos.logback:logback-classic:1.2.3"
+
+    //serialization
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.0"
 }

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

@@ -4,6 +4,7 @@ import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 
 class MainActivity : AppCompatActivity() {
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/MovieItemAdapter.kt → HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/adapter/MovieItemAdapter.kt

@@ -1,4 +1,4 @@
-package com.pg.homeworknetwork
+package com.pg.homeworknetwork.adapter
 
 import android.view.LayoutInflater
 import android.view.View
@@ -12,6 +12,9 @@ import androidx.recyclerview.widget.ListAdapter
 import androidx.recyclerview.widget.RecyclerView
 import coil.load
 import coil.transform.RoundedCornersTransformation
+import com.pg.homeworknetwork.BuildConfig
+import com.pg.homeworknetwork.R
+import com.pg.homeworknetwork.model.Movie
 
 internal class MovieItemAdapter : ListAdapter<Movie, MovieItemAdapter.ViewHolder>(MOVIE_COMPARATOR) {
     private var clickListener: IOnItemClick? = null

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

@@ -0,0 +1,68 @@
+package com.pg.homeworknetwork.fragment
+
+import android.os.Bundle
+import android.view.View
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.activity.OnBackPressedCallback
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentManager
+import androidx.fragment.app.FragmentTransaction
+import coil.load
+import coil.transform.RoundedCornersTransformation
+import com.pg.homeworknetwork.BuildConfig
+import com.pg.homeworknetwork.R
+import com.pg.homeworknetwork.model.Movie
+import com.pg.homeworknetwork.repo.TmdbRepo
+import kotlinx.coroutines.*
+
+class MovieDetailFragment : Fragment(R.layout.fragment_movie_preview) {
+    lateinit var poster: ImageView
+    private lateinit var originalTitle: TextView
+    lateinit var overview: TextView
+    private lateinit var popularity: TextView
+    private lateinit var releaseDate: TextView
+
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Main)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        with(view) {
+            poster = findViewById(R.id.poster)
+            originalTitle = findViewById(R.id.originalTitle)
+            overview = findViewById(R.id.overview)
+            popularity = findViewById(R.id.popularity)
+            releaseDate = findViewById(R.id.releaseDate)
+        }
+
+        val movieId = arguments?.getInt(ARG_ID) ?: 550
+
+        scope.launch {
+            TmdbRepo.getMovie(movieId)?.let {
+                poster.load("${BuildConfig.API_IMAGE_BASE_URL}${it.posterPath}") {
+                    transformations(RoundedCornersTransformation(16f))
+                }
+                originalTitle.text = it.originalTitle
+                overview.text = it.overview
+                popularity.text = it.popularity.toString()
+                releaseDate.text = it.releaseDate
+            }
+        }
+
+        activity?.onBackPressedDispatcher?.addCallback(
+            this.viewLifecycleOwner,
+            object : OnBackPressedCallback(true) {
+                override fun handleOnBackPressed() {
+                    val manager: FragmentManager = parentFragmentManager
+                    val transaction: FragmentTransaction = manager.beginTransaction()
+                    transaction.replace(R.id.mainFragment, MovieListFragment())
+                    transaction.commit()
+                }
+            })
+    }
+
+    companion object {
+        const val TAG = "MovieDetailFragment"
+        const val ARG_ID = "MovieDetailFragment_Arguments_Movie_Id"
+    }
+}

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

@@ -1,4 +1,4 @@
-package com.pg.homeworknetwork
+package com.pg.homeworknetwork.fragment
 
 import android.os.Bundle
 import android.view.View
@@ -7,16 +7,24 @@ import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.FragmentTransaction
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.pg.homeworknetwork.R
+import com.pg.homeworknetwork.adapter.MovieItemAdapter
+import com.pg.homeworknetwork.model.Movie
+import com.pg.homeworknetwork.repo.TmdbRepo
+import kotlinx.coroutines.*
 
 class MovieListFragment : Fragment(R.layout.fragment_movie_list) {
     lateinit var recycler: RecyclerView
 
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Main)
+
     private val goToDetails = object : MovieItemAdapter.IOnItemClick {
         override fun onItemClick(movie: Movie) {
             val manager: FragmentManager = parentFragmentManager
             val transaction: FragmentTransaction = manager.beginTransaction()
             val detailsFragment = MovieDetailFragment()
-            detailsFragment.arguments = Bundle().apply { putInt(MovieDetailFragment.ARG_ID, movie.id) }
+            detailsFragment.arguments =
+                Bundle().apply { putInt(MovieDetailFragment.ARG_ID, movie.id) }
             transaction.replace(R.id.mainFragment, detailsFragment)
             transaction.commit()
         }
@@ -31,8 +39,13 @@ class MovieListFragment : Fragment(R.layout.fragment_movie_list) {
             }
         }
         val adapter = (recycler.adapter as MovieItemAdapter)
-        val movies = //получаем фильмы
-        adapter.submitList(movies)
+
+        scope.launch {
+            TmdbRepo.getMovies()?.let {
+                adapter.submitList(it.results)
+            }
+        }
+
         super.onViewCreated(view, savedInstanceState)
     }
 

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/model/Movie.kt

@@ -0,0 +1,21 @@
+package com.pg.homeworknetwork.model
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+/**
+ * Класс для описание фильма
+ */
+@Serializable
+data class Movie(
+    val id: Int = 0,
+    val title: String = "",
+    @SerialName("original_title")
+    val originalTitle: String = "",
+    @SerialName("poster_path")
+    val posterPath: String? = null,
+    val overview: String? = null,
+    val popularity: Double = 0.0,
+    @SerialName("release_date")
+    val releaseDate: String = ""
+)

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/model/MoviesResponse.kt

@@ -0,0 +1,17 @@
+package com.pg.homeworknetwork.model
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+/**
+ * Класс для формирования ответа с сервера (/movies/popular)
+ */
+@Serializable
+data class MoviesResponse(
+    val page: Int = 0,
+    val results: List<Movie> = emptyList(),
+    @SerialName("total_results")
+    val totalResults: Int = 0,
+    @SerialName("total_pages")
+    val totalPages: Int = 0
+)

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/network/KtorClient.kt

@@ -0,0 +1,48 @@
+package com.pg.homeworknetwork.network
+
+import com.pg.homeworknetwork.BuildConfig
+import io.ktor.client.*
+import io.ktor.client.features.*
+import io.ktor.client.features.json.*
+import io.ktor.client.features.json.serializer.*
+import io.ktor.client.features.logging.*
+import io.ktor.client.request.*
+import io.ktor.http.*
+import kotlinx.serialization.json.Json
+
+/**
+ * Ktor клиент
+ */
+object KtorClient {
+    private val json = Json {
+        encodeDefaults = true
+        ignoreUnknownKeys = true
+    }
+
+    val httpClient = HttpClient {
+        install(JsonFeature) {
+            serializer = KotlinxSerializer(json)
+        }
+
+        install(Logging) {
+            logger = object : Logger {
+                override fun log(message: String) {
+                    if (message.contains("api_key"))
+                        println(message.replaceAfter("api_key=", "api_key"))
+                    else println(message)
+                }
+            }
+            level = LogLevel.ALL
+        }
+
+        defaultRequest {
+            host = BuildConfig.API_BASE_URL
+            url {
+                protocol = URLProtocol.HTTPS
+            }
+            parameter("api_key", BuildConfig.API_KEY)
+            contentType(ContentType.Application.Json)
+            accept(ContentType.Application.Json)
+        }
+    }
+}

HomeWorkNetwork/app/src/main/java/com/pg/homeworknetwork/repo/TmdbRepo.kt

@@ -0,0 +1,31 @@
+package com.pg.homeworknetwork.repo
+
+import com.pg.homeworknetwork.model.Movie
+import com.pg.homeworknetwork.model.MoviesResponse
+import com.pg.homeworknetwork.network.KtorClient.httpClient
+import io.ktor.client.features.*
+import io.ktor.client.request.*
+
+/**
+ * Repo для запросов
+ */
+object TmdbRepo {
+
+    /** Получает список фильмов [MoviesResponse] */
+    suspend fun getMovies(): MoviesResponse? =
+        try {
+            httpClient.get(path = "movie/popular")
+        } catch (e: ResponseException) {
+            println(e.response.status.description)
+            null
+        }
+
+    /** Получает фильм [Movie] по идентификатору [id] */
+    suspend fun getMovie(id: Int): Movie? =
+        try {
+            httpClient.get(path = "/movie/$id")
+        } catch (e: ResponseException) {
+            println(e.response.status.description)
+            null
+        }
+}

HomeWorkNetwork/app/src/main/res/layout/activity_main.xml

@@ -8,7 +8,7 @@
 
     <androidx.fragment.app.FragmentContainerView
         android:id="@+id/mainFragment"
-        android:name="com.pg.homeworknetwork.MovieListFragment"
+        android:name="com.pg.homeworknetwork.fragment.MovieListFragment"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />