Start integration with app: adds Hilt for dep injection, implements a view model

.idea/compiler.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="17" />
+    <bytecodeTargetLevel target="1.8" />
   </component>
 </project>

.idea/kotlinc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.9.0" />
+    <option name="version" value="1.8.22" />
   </component>
 </project>

.idea/misc.xml

@@ -1,6 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/build.gradle

@@ -1,6 +1,8 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'kotlin-kapt'
+    id 'com.google.dagger.hilt.android'
 }
 
 android {
@@ -31,24 +33,31 @@ android {
         targetCompatibility JavaVersion.VERSION_1_8
     }
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = JavaVersion.VERSION_1_8.toString()
     }
     buildFeatures {
         compose true
     }
     composeOptions {
-        kotlinCompilerExtensionVersion '1.5.0'
+        // Note: this is strictly tied to a kotlin version, but isn't the version of kotlin exactly.
+        // See: https://developer.android.com/jetpack/androidx/releases/compose-kotlin
+        kotlinCompilerExtensionVersion '1.4.8'
     }
     packagingOptions {
         resources {
             excludes += '/META-INF/{AL2.0,LGPL2.1}'
         }
     }
+    buildToolsVersion '33.0.1'
+}
+
+kotlin {
+    jvmToolchain(8)
 }
 
 dependencies {
-    implementation 'androidx.compose.material3:material3:1.1.1'
+    implementation "androidx.compose.material3:material3:1.1.1"
-    implementation 'androidx.core:core-ktx:1.10.1'
+    implementation "androidx.core:core-ktx:${kotlin_version}"
 
     // Kordophone lib
     implementation project(':backend')
@@ -73,14 +82,23 @@ dependencies {
     // Jetpack Compose Integration
     implementation "androidx.navigation:navigation-compose:$nav_version"
 
-    implementation 'androidx.core:core-ktx:1.10.1'
-    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
     implementation 'androidx.activity:activity-compose:1.4.3'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.6.1'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-compose:2.6.1'
 
     implementation "androidx.compose.ui:ui:1.4.3"
     implementation 'androidx.compose.material:material:1.4.3'
     implementation "androidx.compose.foundation:foundation:1.4.3"
 
-    debugImplementation 'androidx.compose.ui:ui-tooling:1.4.3'
+    // Hilt (dependency injection)
+    implementation "com.google.dagger:hilt-android:${hilt_version}"
+    implementation "androidx.hilt:hilt-navigation-compose:1.0.0"
+    kapt "com.google.dagger:hilt-compiler:${hilt_version}"
 
-}
+    debugImplementation 'androidx.compose.ui:ui-tooling:1.4.3'
+}
+
+// Allow references to generated code
+kapt {
+    correctErrorTypes true
+}

app/src/main/AndroidManifest.xml

@@ -12,6 +12,7 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.KordophoneDroid"
         android:name=".KordophoneApplication"
+        android:networkSecurityConfig="@xml/network_security_config"
         tools:targetApi="31">
         <activity
             android:name=".MainActivity"

app/src/main/java/net/buzzert/kordophonedroid/AppModule.kt

@@ -0,0 +1,25 @@
+package net.buzzert.kordophonedroid
+
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import net.buzzert.kordophone.backend.db.CachedChatDatabase
+import net.buzzert.kordophone.backend.server.ChatRepository
+import net.buzzert.kordophone.backend.server.RetrofitAPIClient
+import java.net.URL
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object AppModule {
+    @Singleton
+    @Provides
+    fun provideChatRepository(): ChatRepository {
+        val host = "http://192.168.1.123:5738"
+        val client = RetrofitAPIClient(URL(host))
+        val apiInterface = client.getAPIInterface()
+        val database = CachedChatDatabase.liveDatabase()
+        return ChatRepository(apiInterface, database)
+    }
+}

app/src/main/java/net/buzzert/kordophonedroid/KordophoneApplication.kt

@@ -1,9 +1,11 @@
 package net.buzzert.kordophonedroid
 
 import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
 import net.buzzert.kordophonedroid.data.AppContainer
 import net.buzzert.kordophonedroid.data.AppContainerImpl
 
+@HiltAndroidApp
 class KordophoneApplication : Application() {
     lateinit var container: AppContainer
 

app/src/main/java/net/buzzert/kordophonedroid/MainActivity.kt

@@ -3,9 +3,11 @@ package net.buzzert.kordophonedroid
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import dagger.hilt.android.AndroidEntryPoint
 import net.buzzert.kordophonedroid.data.AppContainerImpl
 import net.buzzert.kordophonedroid.ui.KordophoneApp
 
+@AndroidEntryPoint
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)

app/src/main/java/net/buzzert/kordophonedroid/data/AppContainerImpl.kt

@@ -1,10 +1,18 @@
 package net.buzzert.kordophonedroid.data
 
-interface AppContainer {
+import androidx.lifecycle.ViewModelStore
-    val something: String
+import androidx.lifecycle.ViewModelStoreOwner
+import net.buzzert.kordophone.backend.server.ChatRepository
+
+interface AppContainer: ViewModelStoreOwner {
+    val repository: ChatRepository
 }
 
 class AppContainerImpl() : AppContainer {
-    override val something: String
+    override val repository: ChatRepository
         get() = TODO("Not yet implemented")
-}
+
+    override val viewModelStore: ViewModelStore
+        get() = TODO("Not yet implemented")
+}
+

app/src/main/java/net/buzzert/kordophonedroid/ui/KordophoneApp.kt

@@ -30,7 +30,7 @@ fun KordophoneApp(
             startDestination = Destination.ConversationList.route,
         ) {
             composable(route = Destination.ConversationList.route) {
-                ConversationListScreen(onMessageSelected = {
+                ConversationListScreen(onConversationSelected = {
                     navController.navigate(Destination.MessageList.createRoute(it))
                 })
             }

app/src/main/java/net/buzzert/kordophonedroid/ui/conversationlist/ConversationListScreen.kt

@@ -11,7 +11,8 @@ import androidx.compose.material.*
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.rounded.Info
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.ComposeCompilerApi
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.TextStyle
@@ -20,15 +21,23 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import net.buzzert.kordophone.backend.model.Conversation
 
 @Composable
 fun ConversationListScreen(
-    onMessageSelected: (conversationID: String) -> Unit
+    viewModel: ConversationListViewModel = hiltViewModel(),
+    onConversationSelected: (conversationID: String) -> Unit
+) {
+    val conversations by viewModel.conversations.collectAsState(initial = listOf())
+    ConversationListView(conversations = conversations, onConversationSelected = onConversationSelected)
+}
+
+@Composable
+fun ConversationListView(
+    conversations: List<Conversation>,
+    onConversationSelected: (conversationID: String) -> Unit
 ) {
-    val convos = ArrayList<String>()
-    for (i in 0..200) {
-        convos += "Test"
-    }
 
     val listState = rememberLazyListState()
 
@@ -42,12 +51,12 @@ fun ConversationListScreen(
         }
     ) {
         LazyColumn(state = listState, modifier = Modifier.padding(it)) {
-            items(convos) { conversation ->
+            items(conversations) { conversation ->
                 ConversationListItem(
-                    name = "James Magahern",
+                    name = conversation.formattedDisplayName(),
-                    id = "asdf",
+                    id = conversation.guid,
-                    isUnread = false,
+                    isUnread = conversation.unreadCount > 0,
-                    onClick = { onMessageSelected("asdf") }
+                    onClick = { onConversationSelected(conversation.guid) }
                 )
             }
         }
@@ -137,5 +146,5 @@ fun ConversationListItemPreview() {
 @Preview
 @Composable
 fun ConversationListScreenPreview() {
-    ConversationListScreen(onMessageSelected = {})
+    ConversationListScreen(onConversationSelected = {})
 }

app/src/main/java/net/buzzert/kordophonedroid/ui/conversationlist/ConversationListViewModel.kt

@@ -0,0 +1,24 @@
+package net.buzzert.kordophonedroid.ui.conversationlist
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.launch
+import net.buzzert.kordophone.backend.model.Conversation
+import net.buzzert.kordophone.backend.server.ChatRepository
+import javax.inject.Inject
+
+@HiltViewModel
+class ConversationListViewModel @Inject constructor(
+    private val repository: ChatRepository
+) : ViewModel() {
+    val conversations: Flow<List<Conversation>>
+        get() = repository.conversationChanges
+
+    init {
+        viewModelScope.launch {
+            repository.synchronize()
+        }
+    }
+}

app/src/main/res/xml/network_security_config.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <domain-config cleartextTrafficPermitted="true">
+        <domain includeSubdomains="true">192.168.1.123</domain>
+    </domain-config>
+</network-security-config>

backend/build.gradle

@@ -27,7 +27,7 @@ android {
         targetCompatibility JavaVersion.VERSION_1_8
     }
     kotlinOptions {
-        jvmTarget = '1.8'
+        jvmTarget = JavaVersion.VERSION_1_8.toString()
     }
 }
 
@@ -48,7 +48,7 @@ dependencies {
     implementation 'com.google.code.gson:gson:2.9.0'
 
     // Realm
-    implementation 'io.realm.kotlin:library-base:1.10.0'
+    implementation "io.realm.kotlin:library-base:${realm_version}"
 
     // https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-core
     implementation group: 'org.jetbrains.kotlinx', name: 'kotlinx-coroutines-core', version: '1.7.3', ext: 'pom'

backend/src/main/java/net/buzzert/kordophone/backend/model/Conversation.kt

@@ -27,6 +27,11 @@ data class Conversation(
     @SerializedName("lastMessage")
     var lastMessage: Message?,
 ) {
+
+    fun formattedDisplayName(): String {
+        return displayName ?: participants.joinToString(", ")
+    }
+
     override fun equals(other: Any?): Boolean {
         if (other == null || javaClass != other.javaClass) return false
 
@@ -39,4 +44,15 @@ data class Conversation(
             unreadCount == o.unreadCount
         )
     }
+
+    override fun hashCode(): Int {
+        var result = guid.hashCode()
+        result = 31 * result + date.hashCode()
+        result = 31 * result + participants.hashCode()
+        result = 31 * result + (displayName?.hashCode() ?: 0)
+        result = 31 * result + unreadCount
+        result = 31 * result + (lastMessagePreview?.hashCode() ?: 0)
+        result = 31 * result + (lastMessage?.hashCode() ?: 0)
+        return result
+    }
 }

backend/src/test/java/net/buzzert/kordophone/backend/MockServer.kt

@@ -30,6 +30,7 @@ import retrofit2.Response
 import java.util.Date
 import java.util.UUID
 
+@OptIn(ExperimentalStdlibApi::class)
 class MockServer {
     val version = "Kordophone-2.0"
     val conversations: MutableList<Conversation> = mutableListOf()

build.gradle

@@ -1,5 +1,8 @@
 buildscript {
     ext {
+        kotlin_version = '1.8.22'
+        realm_version = '1.10.0'
+        hilt_version = '2.44'
     }
 }
 
@@ -7,6 +10,7 @@ buildscript {
 plugins {
     id 'com.android.application' version '8.0.2' apply false
     id 'com.android.library' version '8.0.2' apply false
-    id 'org.jetbrains.kotlin.android' version '1.9.0' apply false
+    id 'org.jetbrains.kotlin.android' version "${kotlin_version}" apply false
-    id 'io.realm.kotlin' version '1.10.0' apply false
+    id 'io.realm.kotlin' version "${realm_version}" apply false
+    id 'com.google.dagger.hilt.android' version "${hilt_version}" apply false
 }