Home work №2 Shebut Denis

app/build.gradle

@@ -41,4 +41,5 @@ dependencies {
     implementation 'com.google.android.material:material:1.11.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     implementation 'com.squareup.picasso:picasso:2.71828'
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.8.7")
 }

app/src/main/AndroidManifest.xml

@@ -10,7 +10,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Coroutines">
-        <activity android:name=".MainActivity"
+        <activity android:name=".presentation.MainActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/otus/homework/coroutines/data/network/CatsImageService.kt

@@ -0,0 +1,9 @@
+package otus.homework.coroutines.data.network
+
+import otus.homework.coroutines.model.CatImageModel
+import retrofit2.http.GET
+
+interface CatsImageService {
+    @GET("images/search")
+    suspend fun getCatImage(): List<CatImageModel>
+}

app/src/main/java/otus/homework/coroutines/data/network/CatsService.kt

@@ -0,0 +1,10 @@
+package otus.homework.coroutines.data.network
+
+import otus.homework.coroutines.model.Fact
+import retrofit2.http.GET
+
+interface CatsService {
+
+    @GET("fact")
+    suspend fun getCatFact() : Fact
+}

app/src/main/java/otus/homework/coroutines/di/DiContainer.kt

@@ -0,0 +1,28 @@
+package otus.homework.coroutines.di
+
+import otus.homework.coroutines.data.network.CatsImageService
+import otus.homework.coroutines.data.network.CatsService
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+class DiContainer {
+
+    private val retrofit by lazy {
+        Retrofit.Builder()
+            .baseUrl("https://catfact.ninja/")
+            .addConverterFactory(GsonConverterFactory.create())
+            .build()
+    }
+
+    private val imageServiceRetrofit by lazy {
+        Retrofit.Builder()
+            .baseUrl("https://api.thecatapi.com/v1/")
+            .addConverterFactory(GsonConverterFactory.create())
+            .build()
+    }
+
+    val service: CatsService by lazy { retrofit.create(CatsService::class.java) }
+    val catsImageService: CatsImageService by lazy {
+        imageServiceRetrofit.create(CatsImageService::class.java)
+    }
+}

app/src/main/java/otus/homework/coroutines/model/CatImageModel.kt

@@ -0,0 +1,14 @@
+package otus.homework.coroutines.model
+
+import com.google.gson.annotations.SerializedName
+
+data class CatImageModel(
+    @field:SerializedName("id")
+    val id: String?,
+    @field:SerializedName("url")
+    val url: String?,
+    @field:SerializedName("width")
+    val width: Int?,
+    @field:SerializedName("height")
+    val height: Int?,
+)

app/src/main/java/otus/homework/coroutines/Fact.kt → app/src/main/java/otus/homework/coroutines/model/Fact.kt

@@ -1,10 +1,10 @@
-package otus.homework.coroutines
+package otus.homework.coroutines.model
 
 import com.google.gson.annotations.SerializedName
 
 data class Fact(
 	@field:SerializedName("fact")
-	val fact: String,
+	val fact: String?,
 	@field:SerializedName("length")
-	val length: Int
+	val length: Int?,
 )

app/src/main/java/otus/homework/coroutines/presentation/CatsFactState.kt

@@ -0,0 +1,15 @@
+package otus.homework.coroutines.presentation
+
+data class CatsFactState(
+    val fact: String,
+    val factLength: Int,
+    val imageUrl: String,
+) {
+    companion object {
+        val INIT = CatsFactState(
+            fact = "",
+            factLength = 0,
+            imageUrl = "",
+        )
+    }
+}

app/src/main/java/otus/homework/coroutines/presentation/CatsPresenter.kt

@@ -0,0 +1,68 @@
+package otus.homework.coroutines.presentation
+
+import android.content.Context
+import android.widget.Toast
+import kotlinx.coroutines.CoroutineName
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import otus.homework.coroutines.data.network.CatsImageService
+import otus.homework.coroutines.data.network.CatsService
+import otus.homework.coroutines.R
+import otus.homework.coroutines.utils.CrashMonitor
+import java.net.SocketTimeoutException
+
+class CatsPresenter(
+    private val catsImageService: CatsImageService,
+    private val catsService: CatsService,
+    private val applicationContext: Context,
+) {
+
+    private val presenterScope = CoroutineScope(Dispatchers.Main + CoroutineName("CatsCoroutine"))
+    private var fetchJob: Job? = null
+
+    private var _catsView: ICatsView? = null
+
+    fun onInitComplete() {
+        fetchJob = presenterScope.launch {
+            try {
+                val fact = catsService.getCatFact()
+                val image = catsImageService.getCatImage()
+//                _catsView?.render(
+//                    CatsFactState(
+//                        fact = fact.fact.orEmpty(),
+//                        factLength = fact.length ?: 0,
+//                        imageUrl = image[0].url.orEmpty(),
+//                        isLoading = false
+//                    )
+//                )
+            } catch (e: SocketTimeoutException) {
+                Toast.makeText(
+                    applicationContext,
+                    applicationContext.getString(R.string.connection_timeout_error),
+                    Toast.LENGTH_LONG
+                ).show()
+            } catch (e: Exception) {
+                CrashMonitor.trackWarning()
+                Toast.makeText(
+                    applicationContext,
+                    e.message,
+                    Toast.LENGTH_LONG
+                ).show()
+            }
+        }
+    }
+
+    fun attachView(catsView: ICatsView) {
+        _catsView = catsView
+    }
+
+    fun detachView() {
+        _catsView = null
+    }
+
+    fun onStop() {
+        fetchJob?.cancel()
+    }
+}

app/src/main/java/otus/homework/coroutines/presentation/CatsView.kt

@@ -0,0 +1,64 @@
+package otus.homework.coroutines.presentation
+
+import android.content.Context
+import android.util.AttributeSet
+import android.widget.Button
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.constraintlayout.widget.ConstraintLayout
+import com.squareup.picasso.Picasso
+import otus.homework.coroutines.R
+import otus.homework.coroutines.utils.Result
+
+class CatsView @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = 0
+) : ConstraintLayout(context, attrs, defStyleAttr), ICatsView {
+
+    //var presenter: CatsPresenter? = null
+    private var onRefresh: (() -> Unit)? = null
+
+    fun setRefreshListener(l: () -> Unit) {
+        onRefresh = l
+    }
+
+    override fun onFinishInflate() {
+        super.onFinishInflate()
+        findViewById<Button>(R.id.button).setOnClickListener {
+            onRefresh?.invoke()
+        }
+    }
+
+    override fun render(state: Result) {
+        when (state) {
+            is Result.Loading -> {
+                findViewById<Button>(R.id.button).isEnabled = false
+            }
+
+            is Result.Error -> {
+                val errorMessage = findViewById<TextView>(R.id.error_textView)
+                errorMessage.visibility = VISIBLE
+                errorMessage.text = state.message
+                findViewById<Button>(R.id.button).isEnabled = true
+            }
+
+            is Result.Success<*> -> {
+                val data = (state.data as? CatsFactState)
+                findViewById<TextView>(R.id.fact_textView).text = data?.fact
+                if (data?.imageUrl?.isNotEmpty() == true) {
+                    Picasso.get()
+                        .load(data.imageUrl)
+                        .into(findViewById<ImageView>(R.id.cat_imageView))
+                }
+                findViewById<Button>(R.id.button).isEnabled = true
+                findViewById<TextView>(R.id.error_textView).visibility = GONE
+            }
+        }
+    }
+}
+
+interface ICatsView {
+
+    fun render(state: Result)
+}