homework 15 (MVVM + DI)

app/build.gradle

@@ -1,6 +1,9 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'com.google.devtools.ksp'
+    id 'com.google.dagger.hilt.android'
+    id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
 }
 
 android {
@@ -30,6 +33,9 @@ android {
     kotlinOptions {
         jvmTarget = '17'
     }
+    buildFeatures{
+        buildConfig = true
+    }
 }
 
 dependencies {
@@ -38,7 +44,20 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.7.0'
     implementation 'com.google.android.material:material:1.12.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.2.0'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.8.7'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.8.7'
+    implementation 'androidx.fragment:fragment-ktx:1.8.5'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.2.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.8.7'
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.9.3'
+    implementation "com.squareup.retrofit2:retrofit:2.9.0"
+    implementation "com.squareup.retrofit2:converter-gson:2.9.0"
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4'
+
+    implementation "com.google.dagger:hilt-android:2.53"
+    ksp "com.google.dagger:hilt-compiler:2.53"
 }

app/src/androidTest/java/ru/otus/basicarchitecture/presentation/AddressViewModelTest.kt

@@ -0,0 +1,12 @@
+package ru.otus.basicarchitecture.presentation
+
+import org.junit.Assert.*
+
+import org.junit.Test
+
+class AddressViewModelTest {
+
+    @Test
+    fun loadSuggestions() {
+    }
+}

app/src/androidTest/java/ru/otus/basicarchitecture/presentation/PersonalDataViewModelTest.kt

@@ -0,0 +1,5 @@
+package ru.otus.basicarchitecture.presentation
+
+import org.junit.Assert.*
+
+class PersonalDataViewModelTest

app/src/androidTest/java/utils/RxRule.kt

@@ -0,0 +1,4 @@
+package utils
+
+class RxRule {
+}

app/src/main/AndroidManifest.xml

@@ -2,7 +2,10 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
+        android:name=".HiltApp"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"

app/src/main/java/ru/otus/basicarchitecture/HiltApp.kt

@@ -0,0 +1,11 @@
+package ru.otus.basicarchitecture
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class HiltApp : Application() {
+    override fun onCreate() {
+        super.onCreate()
+    }
+}

app/src/main/java/ru/otus/basicarchitecture/MainActivity.kt

@@ -2,10 +2,20 @@ package ru.otus.basicarchitecture
 
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import dagger.hilt.android.AndroidEntryPoint
+import ru.otus.basicarchitecture.presentation.PersonalDataFragment
 
+
+@AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        if (savedInstanceState == null) {
+            supportFragmentManager.beginTransaction()
+                .add(R.id.fragmentContainer, PersonalDataFragment())
+                .commit()
+        }
     }
 }

app/src/main/java/ru/otus/basicarchitecture/api/AddressApiService.kt

@@ -0,0 +1,53 @@
+package ru.otus.basicarchitecture.api
+
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import okhttp3.Interceptor
+import okhttp3.OkHttpClient
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import retrofit2.http.Body
+import retrofit2.http.Headers
+import retrofit2.http.POST
+import ru.otus.basicarchitecture.BuildConfig
+import ru.otus.basicarchitecture.model.AddressSuggestionRequest
+import ru.otus.basicarchitecture.model.DadataResponse
+import java.util.concurrent.TimeUnit
+
+
+interface AddressApi {
+    @Headers("Content-Type: application/json", "Accept: application/json")
+    @POST("suggestions/api/4_1/rs/suggest/address")
+    suspend fun getAddressSuggestions(@Body request: AddressSuggestionRequest): DadataResponse
+}
+
+@Module
+@InstallIn(SingletonComponent::class)
+object AddressApiService {
+    private const val BASE_URL = "https://suggestions.dadata.ru/"
+    private const val AUTH_KEY = BuildConfig.DADATA_API_KEY
+
+    private val headerInterceptor = Interceptor { chain ->
+        val request = chain.request().newBuilder()
+            .addHeader("Authorization", "Token $AUTH_KEY")
+            .build()
+        chain.proceed(request)
+    }
+
+    private val client: OkHttpClient = OkHttpClient.Builder()
+            .addInterceptor(headerInterceptor)
+            .connectTimeout(30, TimeUnit.SECONDS)
+            .readTimeout(30, TimeUnit.SECONDS)
+            .build()
+
+
+    @get:Provides
+    val api: AddressApi = Retrofit.Builder()
+        .baseUrl(BASE_URL)
+        .client(client)
+        .addConverterFactory(GsonConverterFactory.create())
+        .build()
+        .create(AddressApi::class.java)
+}

app/src/main/java/ru/otus/basicarchitecture/data/TagsList.kt

@@ -0,0 +1,14 @@
+package ru.otus.basicarchitecture.data
+
+import javax.inject.Inject
+class TagsList  @Inject constructor() {
+    val interests = listOf(
+        "Board games",
+        "Computer games",
+        "Hiking",
+        "Bird watching",
+        "DIY",
+        "Reading",
+        "Parties"
+    )
+}

app/src/main/java/ru/otus/basicarchitecture/data/WizardCache.kt

@@ -0,0 +1,15 @@
+package ru.otus.basicarchitecture.data
+
+import dagger.hilt.android.scopes.ActivityRetainedScoped
+import javax.inject.Inject
+
+@ActivityRetainedScoped
+class WizardCache @Inject constructor() {
+    var name: String = ""
+    var surname: String = ""
+    var birthDate: Long = 0
+    var city: String = ""
+    var country: String = ""
+    var address: String = ""
+    var interests: List<String> = listOf()
+}

app/src/main/java/ru/otus/basicarchitecture/model/Address.kt

@@ -0,0 +1,5 @@
+package ru.otus.basicarchitecture.model
+
+data class AddressSuggestionRequest(val query: String)
+data class DadataResponse(val suggestions: List<AddressSuggestion>)
+data class AddressSuggestion(val value: String)

app/src/main/java/ru/otus/basicarchitecture/presentation/AddressFragment.kt

@@ -0,0 +1,75 @@
+package ru.otus.basicarchitecture.presentation
+
+import android.os.Bundle
+import android.text.Editable
+import android.text.TextWatcher
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ArrayAdapter
+import android.widget.Button
+import androidx.fragment.app.Fragment
+import com.google.android.material.textfield.MaterialAutoCompleteTextView
+import dagger.hilt.android.AndroidEntryPoint
+import ru.otus.basicarchitecture.R
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class AddressFragment : Fragment() {
+
+    @Inject
+    lateinit var viewModel: AddressViewModel
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        return inflater.inflate(R.layout.fragment_address, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        view.findViewById<MaterialAutoCompleteTextView>(R.id.address)
+            .addTextChangedListener(object : TextWatcher {
+                override fun afterTextChanged(s: Editable?) {
+                    viewModel.loadSuggestions(s.toString())
+                    viewModel.address.value = s.toString()
+                }
+
+                override fun beforeTextChanged(
+                    s: CharSequence?,
+                    start: Int,
+                    count: Int,
+                    after: Int
+                ) {
+                }
+
+                override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {}
+            })
+
+        viewModel.addressSuggestions.observe(viewLifecycleOwner) { suggestions ->
+            val adapter = ArrayAdapter(
+                requireContext(),
+                android.R.layout.simple_dropdown_item_1line,
+                suggestions
+            )
+            val address = view.findViewById<MaterialAutoCompleteTextView>(R.id.address)
+            address.setAdapter(adapter)
+
+            if (suggestions.isNotEmpty()) {
+                address.showDropDown()
+            }
+        }
+
+        view.findViewById<Button>(R.id.nextToTags).setOnClickListener {
+            viewModel.saveToCash()
+
+            parentFragmentManager.beginTransaction()
+                .replace(R.id.fragmentContainer, TagsFragment())
+                .addToBackStack(null)
+                .commit()
+
+        }
+    }
+}

app/src/main/java/ru/otus/basicarchitecture/presentation/AddressViewModel.kt

@@ -0,0 +1,35 @@
+package ru.otus.basicarchitecture.presentation
+
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.launch
+import ru.otus.basicarchitecture.api.AddressApiService.api
+import ru.otus.basicarchitecture.data.WizardCache
+import ru.otus.basicarchitecture.model.AddressSuggestionRequest
+import javax.inject.Inject
+
+class AddressViewModel @Inject constructor(private val wizardCache: WizardCache) : ViewModel() {
+    val address = MutableLiveData<String>()
+    val addressSuggestions = MutableLiveData<List<String>>()
+    fun loadSuggestions(search: String) {
+        if (search.isBlank()) {
+            addressSuggestions.value = emptyList()
+            return
+        }
+
+        viewModelScope.launch {
+            try {
+                val response = api.getAddressSuggestions(AddressSuggestionRequest(search))
+                addressSuggestions.value = response.suggestions.map { it.value }
+            } catch (e: Exception) {
+                addressSuggestions.value = emptyList()
+            }
+        }
+    }
+
+
+    fun saveToCash() {
+        wizardCache.address = address.value ?: ""
+    }
+}