Create HomeserverFragment and relative classes

.idea/inspectionProfiles/Project_Default.xml

@@ -1,6 +1,43 @@
 <component name="InspectionProjectProfileManager">
   <profile version="1.0">
     <option name="myName" value="Project Default" />
+    <inspection_tool class="ControlFlowWithEmptyBody" enabled="true" level="WARNING" enabled_by_default="true" editorAttributes="WARNING_ATTRIBUTES" />
+    <inspection_tool class="PreviewAnnotationInFunctionWithParameters" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewApiLevelMustBeValid" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewDimensionRespectsLimit" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewFontScaleMustBeGreaterThanZero" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewMultipleParameterProviders" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewMustBeTopLevelFunction" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewNeedsComposableAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewNotSupportedInUnitTestFiles" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PreviewPickerAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
+      <option name="composableFile" value="true" />
+      <option name="previewFile" value="true" />
+    </inspection_tool>
     <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
       <option name="processCode" value="true" />
       <option name="processLiterals" value="true" />

.idea/inspectionProfiles/profiles_settings.xml

@@ -0,0 +1,7 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="PROJECT_PROFILE" value="Default" />
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

app/build.gradle.kts

@@ -62,8 +62,9 @@ dependencies {
     implementation("androidx.navigation:navigation-ui-ktx:2.7.5")
     implementation("androidx.compose.material3:material3:1.1.2")
     implementation("org.matrix.android:matrix-android-sdk2:1.5.30")
+    implementation("com.squareup.okhttp3:okhttp:4.12.0")
     implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
-    implementation("androidx.activity:activity-compose:1.7.0")
+    implementation("androidx.activity:activity-compose:1.8.0")
     implementation(platform("androidx.compose:compose-bom:2023.03.00"))
     implementation("androidx.compose.ui:ui")
     implementation("androidx.compose.ui:ui-graphics")

app/src/main/AndroidManifest.xml

@@ -1,7 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<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:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -9,8 +12,27 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
-        android:supportsRtl="true"
+        android:supportsRtl="true">
-        >
+
+        <!--
+            Remove WorkManagerInitializer Provider because we are using on-demand initialization of WorkManager
+            https://github.com/vector-im/element-android/blob/1a941149ab2eb5f725ff5297391c756bc694a60c/vector-app/src/main/AndroidManifest.xml#L42C1-L57C20
+        -->
+        <provider
+            android:name="androidx.startup.InitializationProvider"
+            android:authorities="${applicationId}.androidx-startup"
+            android:exported="false"
+            tools:node="merge">
+            <meta-data
+                android:name="androidx.work.WorkManagerInitializer"
+                android:value="androidx.startup"
+                tools:node="remove" />
+            <!-- We init the lib ourself in EmojiCompatWrapper -->
+            <meta-data
+                android:name="androidx.emoji2.text.EmojiCompatInitializer"
+                tools:node="remove" />
+        </provider>
+
         <activity
             android:name=".MainActivity"
             android:exported="true">

app/src/main/java/eu/steffo/twom/MainActivity.kt

@@ -3,47 +3,14 @@ package eu.steffo.twom
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
-import androidx.compose.foundation.layout.fillMaxSize
+import eu.steffo.twom.ui.fragment.LoginFragment
-import androidx.compose.material3.Divider
+
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.ModalDrawerSheet
-import androidx.compose.material3.ModalNavigationDrawer
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
-import eu.steffo.twom.ui.theme.TwoMTheme
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        actionBar?.hide()
 
-        setContent {
+        setContent { LoginFragment() }
-            TwoMTheme {
-                // A surface container using the 'background' color from the theme
-                ModalNavigationDrawer(
-                    drawerContent = {
-                        Drawer()
-                    }
-                ) {
-                    Surface(
-                        modifier = Modifier.fillMaxSize(),
-                        color = MaterialTheme.colorScheme.background
-                    ) {
-                        Text(text = "Garasbici")
-                    }
-                }
-            }
-        }
     }
 }
-
-@Preview
-@Composable
-fun Drawer() {
-    ModalDrawerSheet {
-        Text(text = "garasauto")
-        Divider()
-    }
-}

app/src/main/java/eu/steffo/twom/ui/fragment/HomeserverFragment.kt

@@ -0,0 +1,134 @@
+package eu.steffo.twom.ui.fragment
+
+import android.net.Uri
+import android.util.Log
+import android.webkit.URLUtil
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import eu.steffo.twom.R
+import eu.steffo.twom.ui.input.HomeserverField
+import eu.steffo.twom.ui.input.HomeserverFieldState
+import eu.steffo.twom.ui.scaffold.LocalMatrix
+import eu.steffo.twom.ui.scaffold.TwoMMatrixProvider
+import eu.steffo.twom.ui.scaffold.TwoMTopAppBar
+import eu.steffo.twom.ui.theme.TwoMTheme
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import org.matrix.android.sdk.api.auth.data.HomeServerConnectionConfig
+
+@Composable
+fun LoginFragment() {
+    TwoMMatrixProvider {
+        TwoMTheme {
+            LoginContents()
+        }
+    }
+}
+
+@Composable
+@Preview
+fun LoginContents() {
+    val scope = rememberCoroutineScope()
+    val matrix = LocalMatrix.current
+
+    var homeserver by rememberSaveable { mutableStateOf("") }
+    var homeserverFieldState by rememberSaveable { mutableStateOf<HomeserverFieldState>(HomeserverFieldState.Empty) }
+    var homeserverUrlValid by rememberSaveable { mutableStateOf<Boolean?>(null) }
+    var homeserverFlowValid by rememberSaveable { mutableStateOf<Boolean?>(null) }
+
+    TwoMTopAppBar {
+        Column(
+            modifier = Modifier.padding(it)
+        ) {
+            Row(
+                modifier = Modifier.padding(start = 20.dp, end = 20.dp, bottom = 10.dp)
+            ) {
+                Text(LocalContext.current.getString(R.string.login_welcome_text))
+            }
+            Row(
+                modifier = Modifier.padding(start = 20.dp, end = 20.dp, bottom = 10.dp)
+            ) {
+                HomeserverField(
+                    modifier = Modifier.fillMaxWidth(),
+                    value = homeserver,
+                    onValueChange = OnValueChange@{
+                        homeserver = it
+                        homeserverUrlValid = null
+                        homeserverFlowValid = null
+                        homeserverFieldState = HomeserverFieldState.Empty
+
+                        if(homeserver == "") {
+                            return@OnValueChange
+                        }
+
+                        if(!(URLUtil.isHttpUrl(homeserver) || URLUtil.isHttpsUrl(homeserver))) {
+                            homeserverUrlValid = false
+                            return@OnValueChange
+                        }
+                        homeserverUrlValid = true
+
+                        val uri = Uri.parse(homeserver)
+
+                        scope.launch ValidateFlows@{
+                            homeserverFieldState = HomeserverFieldState.Waiting
+                            delay(500L)
+                            if(homeserver != it) return@ValidateFlows
+
+                            val authenticationService = matrix!!.authenticationService()
+
+                            homeserverFieldState = HomeserverFieldState.Validating
+                            try {
+                                authenticationService.getLoginFlow(HomeServerConnectionConfig(
+                                    homeServerUri = uri,
+                                ))
+                            }
+                            catch(e: Throwable) {
+                                Log.e("LoginFragment", "Failed to get flows for homeserver", e)
+                                homeserverFieldState = HomeserverFieldState.Done
+                                homeserverFlowValid = false
+                                return@ValidateFlows
+                            }
+
+                            homeserverFieldState = HomeserverFieldState.Done
+                            homeserverFlowValid = true
+                        }
+                    },
+                    state = homeserverFieldState,
+                    error =
+                        if(homeserverUrlValid == false) LocalContext.current.getString(R.string.homeserver_error_malformedurl)
+                        else if(homeserverFlowValid == false) LocalContext.current.getString(R.string.homeserver_error_notmatrix)
+                        else null
+                    ,
+                    enabled = (LocalMatrix.current != null),
+                )
+            }
+            Spacer(modifier = Modifier.weight(1f))
+            Row(
+                modifier = Modifier.padding(start = 20.dp, end = 20.dp, top = 10.dp, bottom = 10.dp)
+            ) {
+                Button(
+                    onClick = {},
+                    enabled = homeserverUrlValid == true && homeserverFlowValid == true,
+                    modifier = Modifier.fillMaxWidth(),
+                ) {
+                    Text(LocalContext.current.getString(R.string.login_button_continue_text))
+                }
+            }
+        }
+    }
+}

app/src/main/java/eu/steffo/twom/ui/input/HomeserverField.kt

@@ -0,0 +1,64 @@
+package eu.steffo.twom.ui.input
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Build
+import androidx.compose.material.icons.filled.Check
+import androidx.compose.material.icons.filled.Create
+import androidx.compose.material.icons.filled.Send
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.tooling.preview.Preview
+import eu.steffo.twom.R
+
+
+enum class HomeserverFieldState {
+    Empty,
+    Waiting,
+    Validating,
+    Done,
+}
+
+
+@Composable
+@Preview
+fun HomeserverField(
+    modifier: Modifier = Modifier,
+    value: String = "",
+    onValueChange: (String) -> Unit = {},
+    enabled: Boolean = true,
+    state: HomeserverFieldState = HomeserverFieldState.Empty,
+    error: String? = null,
+) {
+    TextField(
+        modifier = modifier,
+        value = value,
+        onValueChange = onValueChange,
+        enabled = enabled,
+        singleLine = true,
+        label = {
+            Text(LocalContext.current.getString(R.string.homeserver_label))
+        },
+        placeholder = {
+            Text(LocalContext.current.getString(R.string.homeserver_placeholder))
+        },
+        trailingIcon = {
+            Icon(
+                when(state) {
+                    HomeserverFieldState.Empty -> Icons.Default.Build
+                    HomeserverFieldState.Waiting -> Icons.Default.Create
+                    HomeserverFieldState.Validating -> Icons.Default.Send
+                    HomeserverFieldState.Done -> Icons.Default.Check
+                },
+                LocalContext.current.getString(R.string.homeserver_trailingicon_validating_description)
+            )
+        },
+        supportingText = {
+            Text(error ?: LocalContext.current.getString(R.string.homeserver_supporting))
+        },
+        isError = (error != null)
+    )
+}

app/src/main/java/eu/steffo/twom/ui/scaffold/TwoMMatrixProvider.kt

@@ -0,0 +1,74 @@
+package eu.steffo.twom.ui.scaffold
+
+import android.content.Context
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.compositionLocalOf
+import androidx.compose.ui.platform.LocalContext
+import eu.steffo.twom.R
+import org.matrix.android.sdk.api.Matrix
+import org.matrix.android.sdk.api.MatrixConfiguration
+import org.matrix.android.sdk.api.provider.RoomDisplayNameFallbackProvider
+
+val LocalMatrix = compositionLocalOf<Matrix?> { null }
+
+@Composable
+fun TwoMMatrixProvider(
+    content: @Composable () -> Unit = {},
+) {
+    val matrix = Matrix(
+        context = LocalContext.current,
+        matrixConfiguration = MatrixConfiguration(
+            applicationFlavor = "TwoM",
+            roomDisplayNameFallbackProvider = TwoMRoomDisplayNameFallbackProvider(LocalContext.current)
+        )
+    )
+
+    CompositionLocalProvider(LocalMatrix provides matrix) {
+        content()
+    }
+}
+
+
+class TwoMRoomDisplayNameFallbackProvider(
+    val context: Context
+) : RoomDisplayNameFallbackProvider {
+
+    override fun getNameFor1member(name: String): String {
+        return context.getString(R.string.room_name_fallback_members_1).format(name)
+    }
+
+    override fun getNameFor2members(name1: String, name2: String): String {
+        return context.getString(R.string.room_name_fallback_members_2).format(name1, name2)
+    }
+
+    override fun getNameFor3members(name1: String, name2: String, name3: String): String {
+        return context.getString(R.string.room_name_fallback_members_3).format(name1, name2, name3)
+    }
+
+    override fun getNameFor4members(
+        name1: String,
+        name2: String,
+        name3: String,
+        name4: String
+    ): String {
+        return context.getString(R.string.room_name_fallback_members_4).format(name1, name2, name3, name4)
+    }
+
+    override fun getNameFor4membersAndMore(
+        name1: String,
+        name2: String,
+        name3: String,
+        remainingCount: Int
+    ): String {
+        return context.getString(R.string.room_name_fallback_members_more).format(name1, name2, name3, remainingCount)
+    }
+
+    override fun getNameForEmptyRoom(isDirect: Boolean, leftMemberNames: List<String>): String {
+        return context.getString(R.string.room_name_fallback_members_0)
+    }
+
+    override fun getNameForRoomInvite(): String {
+        return context.getString(R.string.room_name_fallback_invite)
+    }
+}

app/src/main/java/eu/steffo/twom/ui/scaffold/TwoMNavigationDrawer.kt

@@ -0,0 +1,36 @@
+package eu.steffo.twom.ui.scaffold
+
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalDrawerSheet
+import androidx.compose.material3.ModalNavigationDrawer
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+
+
+@Composable
+fun TwoMNavigationDrawer(
+    modifier: Modifier = Modifier,
+    content: @Composable () -> Unit = {},
+) {
+    ModalNavigationDrawer(
+        drawerContent = {
+            Drawer()
+        }
+    ) {
+        Surface(
+            modifier = modifier,
+            color = MaterialTheme.colorScheme.background
+        ) {
+            content()
+        }
+    }
+}
+
+@Composable
+fun Drawer() {
+    ModalDrawerSheet {
+        Text("garasauto")
+    }
+}

app/src/main/java/eu/steffo/twom/ui/scaffold/TwoMTopAppBar.kt

@@ -0,0 +1,26 @@
+package eu.steffo.twom.ui.scaffold
+
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.material3.CenterAlignedTopAppBar
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+import eu.steffo.twom.R
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun TwoMTopAppBar(
+    content: @Composable (innerPadding: PaddingValues) -> Unit = {},
+) {
+    Scaffold(
+        topBar = {
+            CenterAlignedTopAppBar(
+                title = { Text(LocalContext.current.getString(R.string.app_name)) }
+            )
+        }
+    ) {
+        content(it)
+    }
+}

app/src/main/res/values-it/strings.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources></resources>

app/src/main/res/values/strings.xml

@@ -1,3 +1,20 @@
 <resources>
     <string name="app_name">TwoM</string>
+    <string name="homeserver_placeholder">https://candy.steffo.eu</string>
+    <string name="homeserver_label">Homeserver</string>
+    <string name="homeserver_supporting">The URL of the homeserver providing you with Matrix access.</string>
+    <string name="homeserver_error_malformedurl">The homeserver URL you provided is not a valid URL.</string>
+    <string name="room_name_fallback_members_0">Is this even a party?</string>
+    <string name="room_name_fallback_members_1">%1$s\'s party</string>
+    <string name="room_name_fallback_members_2">%1$s and %2$s\'s party</string>
+    <string name="room_name_fallback_members_3">%1$s, %2$s, and %3$s\'s party</string>
+    <string name="room_name_fallback_members_4">%1$s, %2$s, %3$s, %4$s\'s party</string>
+    <string name="room_name_fallback_members_more">%1$s, %2$s, %3$s and %4$d others\' party</string>
+    <string name="room_name_fallback_invite">Party invite</string>
+    <string name="login_button_continue_text">Continue</string>
+    <string name="login_welcome_text">Welcome to TwoM! To start using the app, you\'ll need to select the Matrix homeserver you want to use.</string>
+    <string name="homeserver_error_notmatrix">The homeserver URL you provided does not point to a Matrix homeserver.</string>
+    <string name="homeserver_trailingicon_validating_description">Checking if the URL points to a Matrix homeserver…</string>
+    <string name="homeserver_trailingicon_waiting_description">Waiting for you to stop writing…</string>
+    <string name="homeserver_trailingicon_waiting_done">All checks complete.</string>
 </resources>