implement dark mode, force app to LTR

app/src/main/AndroidManifest.xml

@@ -11,7 +11,7 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
-        android:supportsRtl="true"
+        android:supportsRtl="false"
         android:theme="@style/Theme.PostHUB">
         <activity
             android:name=".MainActivity"

app/src/main/java/net/rodakot/posthub/MainActivity.kt

@@ -5,9 +5,11 @@ import android.graphics.BitmapFactory
 import android.net.Uri
 import android.os.Bundle
 import android.util.Base64
+import android.view.View
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
@@ -56,6 +58,7 @@ import androidx.compose.material3.SwitchDefaults
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -69,6 +72,7 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalLayoutDirection
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontWeight
@@ -76,6 +80,7 @@ import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.LayoutDirection
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import kotlinx.coroutines.Dispatchers
@@ -102,20 +107,31 @@ private const val EnvironmentKey = "environment_variables"
 private const val FlowKey = "request_flow"
 
 private object AppColors {
-    val Canvas = Color(0xFFF5F7F4)
-    val Panel = Color(0xFFFFFFFF)
-    val PanelSoft = Color(0xFFF0F4F1)
-    val Ink = Color(0xFF17201C)
-    val Muted = Color(0xFF66736D)
-    val Border = Color(0xFFDDE4DF)
-    val Primary = Color(0xFF006B5B)
-    val PrimarySoft = Color(0xFFE3F4EF)
-    val Coral = Color(0xFFD84B35)
-    val Amber = Color(0xFFC47A12)
-    val Green = Color(0xFF147A56)
-    val Red = Color(0xFFC7383D)
-    val Code = Color(0xFF101715)
-    val CodeText = Color(0xFFEAF3EF)
+    private val darkMode = mutableStateOf(false)
+
+    fun useDarkTheme(enabled: Boolean) {
+        if (darkMode.value != enabled) {
+            darkMode.value = enabled
+        }
+    }
+
+    private val isDark: Boolean get() = darkMode.value
+
+    val Canvas: Color get() = if (isDark) Color(0xFF0E1513) else Color(0xFFF5F7F4)
+    val Panel: Color get() = if (isDark) Color(0xFF151D1A) else Color(0xFFFFFFFF)
+    val PanelSoft: Color get() = if (isDark) Color(0xFF1C2824) else Color(0xFFF0F4F1)
+    val Ink: Color get() = if (isDark) Color(0xFFEAF3EF) else Color(0xFF17201C)
+    val Muted: Color get() = if (isDark) Color(0xFFA2B2AB) else Color(0xFF66736D)
+    val Border: Color get() = if (isDark) Color(0xFF2E3B36) else Color(0xFFDDE4DF)
+    val Primary: Color get() = if (isDark) Color(0xFF5FE0C5) else Color(0xFF006B5B)
+    val OnPrimary: Color get() = if (isDark) Color(0xFF05201B) else Color.White
+    val PrimarySoft: Color get() = if (isDark) Color(0xFF14382F) else Color(0xFFE3F4EF)
+    val Coral: Color get() = if (isDark) Color(0xFFFF9A83) else Color(0xFFD84B35)
+    val Amber: Color get() = if (isDark) Color(0xFFE8B660) else Color(0xFFC47A12)
+    val Green: Color get() = if (isDark) Color(0xFF68D8A7) else Color(0xFF147A56)
+    val Red: Color get() = if (isDark) Color(0xFFFF8A8F) else Color(0xFFC7383D)
+    val Code: Color get() = if (isDark) Color(0xFF07100D) else Color(0xFF101715)
+    val CodeText: Color get() = Color(0xFFEAF3EF)
 }
 
 private data class RequestField(
@@ -214,7 +230,7 @@ private data class FlowRunEntry(
     val savedVariables: Int = 0
 )
 
-private val AppSections = listOf(
+private fun appSections() = listOf(
     AppSection("request", "Request", "Composer", AppColors.Primary),
     AppSection("clients", "Clients", "MCI TCI", AppColors.Coral),
     AppSection("flow", "Flow", "Sequence", AppColors.Amber),
@@ -226,10 +242,16 @@ class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         setTheme(R.style.Theme_PostHUB)
         super.onCreate(savedInstanceState)
+        window.decorView.layoutDirection = View.LAYOUT_DIRECTION_LTR
+        window.decorView.textDirection = View.TEXT_DIRECTION_LTR
         enableEdgeToEdge()
         setContent {
-            PostHUBTheme(dynamicColor = false) {
-                ApiClientApp()
+            val darkTheme = isSystemInDarkTheme()
+            AppColors.useDarkTheme(darkTheme)
+            PostHUBTheme(darkTheme = darkTheme, dynamicColor = false) {
+                CompositionLocalProvider(LocalLayoutDirection provides LayoutDirection.Ltr) {
+                    ApiClientApp()
+                }
             }
         }
     }
@@ -617,6 +639,8 @@ private fun AppHomeHeader(
     variables: Int,
     onSectionChange: (String) -> Unit
 ) {
+    val sections = appSections()
+
     PanelSurface {
         Column(verticalArrangement = Arrangement.spacedBy(14.dp)) {
             Row(
@@ -630,8 +654,8 @@ private fun AppHomeHeader(
                 ) {
                     Surface(
                         shape = RoundedCornerShape(8.dp),
-                        color = AppColors.Ink,
-                        contentColor = Color.White
+                        color = AppColors.Primary,
+                        contentColor = AppColors.OnPrimary
                     ) {
                         Text(
                             text = "PH",
@@ -648,7 +672,7 @@ private fun AppHomeHeader(
                             fontWeight = FontWeight.Black
                         )
                         Text(
-                            text = AppSections.firstOrNull { it.key == activeSection }?.meta ?: "Request client",
+                            text = sections.firstOrNull { it.key == activeSection }?.meta ?: "Request client",
                             color = AppColors.Muted,
                             style = MaterialTheme.typography.bodySmall
                         )
@@ -675,7 +699,7 @@ private fun AppHomeHeader(
                     .horizontalScroll(rememberScrollState()),
                 horizontalArrangement = Arrangement.spacedBy(8.dp)
             ) {
-                AppSections.forEach { section ->
+                sections.forEach { section ->
                     AppSectionChip(
                         section = section,
                         selected = activeSection == section.key,
@@ -942,7 +966,7 @@ private fun SendButton(
         shape = RoundedCornerShape(8.dp),
         colors = ButtonDefaults.buttonColors(
             containerColor = AppColors.Primary,
-            contentColor = Color.White,
+            contentColor = AppColors.OnPrimary,
             disabledContainerColor = AppColors.Border,
             disabledContentColor = AppColors.Muted
         )
@@ -951,7 +975,7 @@ private fun SendButton(
             CircularProgressIndicator(
                 modifier = Modifier.size(18.dp),
                 strokeWidth = 2.dp,
-                color = Color.White
+                color = AppColors.OnPrimary
             )
             Spacer(Modifier.width(8.dp))
             Text("Sending")
@@ -1167,13 +1191,18 @@ private fun FlowPanel(
                     onClick = onRun,
                     enabled = steps.isNotEmpty() && !isRunning,
                     shape = RoundedCornerShape(8.dp),
-                    colors = ButtonDefaults.buttonColors(containerColor = AppColors.Primary)
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = AppColors.Primary,
+                        contentColor = AppColors.OnPrimary,
+                        disabledContainerColor = AppColors.Border,
+                        disabledContentColor = AppColors.Muted
+                    )
                 ) {
                     if (isRunning) {
                         CircularProgressIndicator(
                             modifier = Modifier.size(16.dp),
                             strokeWidth = 2.dp,
-                            color = Color.White
+                            color = AppColors.OnPrimary
                         )
                         Spacer(Modifier.width(8.dp))
                     }

app/src/main/res/drawable/widget_bg.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="#F7FAF7" />
+    <solid android:color="@color/posthub_widget_background" />
     <corners android:radius="24dp" />
     <stroke
         android:width="1dp"
-        android:color="#DDE4DF" />
+        android:color="@color/posthub_border" />
 </shape>

app/src/main/res/drawable/widget_pill_bg.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="#E3F4EF" />
+    <solid android:color="@color/posthub_widget_pill" />
     <corners android:radius="14dp" />
 </shape>

app/src/main/res/drawable/widget_refresh_bg.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="#006B5B" />
+    <solid android:color="@color/posthub_widget_refresh" />
     <corners android:radius="18dp" />
 </shape>

app/src/main/res/layout/widget_flow.xml

@@ -5,8 +5,10 @@
     android:layout_height="match_parent"
     android:background="@drawable/widget_bg"
     android:gravity="center_vertical"
+    android:layoutDirection="ltr"
     android:orientation="vertical"
-    android:padding="16dp">
+    android:padding="16dp"
+    android:textDirection="ltr">
 
     <LinearLayout
         android:layout_width="match_parent"
@@ -28,7 +30,7 @@
                 android:fontFamily="sans"
                 android:maxLines="1"
                 android:text="@string/widget_title"
-                android:textColor="#17201C"
+                android:textColor="@color/posthub_widget_title"
                 android:textSize="16sp"
                 android:textStyle="bold" />
 
@@ -39,7 +41,7 @@
                 android:ellipsize="end"
                 android:maxLines="1"
                 android:text="@string/widget_ready"
-                android:textColor="#66736D"
+                android:textColor="@color/posthub_widget_subtitle"
                 android:textSize="12sp" />
         </LinearLayout>
 
@@ -76,7 +78,7 @@
             android:paddingBottom="5dp"
             android:text="@string/widget_idle"
             android:textAlignment="center"
-            android:textColor="#006B5B"
+            android:textColor="@color/posthub_widget_status"
             android:textSize="11sp"
             android:textStyle="bold" />
 
@@ -89,7 +91,7 @@
             android:ellipsize="end"
             android:maxLines="1"
             android:text="@string/widget_no_run"
-            android:textColor="#66736D"
+            android:textColor="@color/posthub_widget_subtitle"
             android:textSize="12sp" />
     </LinearLayout>
 
@@ -104,7 +106,7 @@
         android:gravity="top"
         android:maxLines="4"
         android:text="@string/widget_empty_state"
-        android:textColor="#17201C"
+        android:textColor="@color/posthub_widget_title"
         android:textSize="13sp" />
 
 </LinearLayout>

app/src/main/res/values-night-v31/themes.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.PostHUB.Starting" parent="android:style/Theme.Material.NoActionBar">
+        <item name="android:windowSplashScreenBackground">@color/posthub_canvas</item>
+        <item name="android:windowSplashScreenAnimatedIcon">@drawable/ic_splash_brand</item>
+        <item name="android:windowSplashScreenIconBackgroundColor">@color/posthub_primary_dark</item>
+        <item name="android:windowBackground">@drawable/splash_window_background</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowActionBar">false</item>
+        <item name="android:statusBarColor">@color/posthub_canvas</item>
+        <item name="android:navigationBarColor">@color/posthub_canvas</item>
+        <item name="android:windowLightStatusBar">false</item>
+        <item name="android:windowLightNavigationBar">false</item>
+    </style>
+</resources>

app/src/main/res/values-night/colors.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="posthub_primary">#5FE0C5</color>
+    <color name="posthub_primary_dark">#14382F</color>
+    <color name="posthub_canvas">#0E1513</color>
+    <color name="posthub_surface">#151D1A</color>
+    <color name="posthub_border">#2E3B36</color>
+    <color name="posthub_coral">#FF9A83</color>
+    <color name="posthub_amber">#E8B660</color>
+    <color name="posthub_widget_background">#151D1A</color>
+    <color name="posthub_widget_refresh">#5FE0C5</color>
+    <color name="posthub_widget_pill">#14382F</color>
+    <color name="posthub_widget_title">#EAF3EF</color>
+    <color name="posthub_widget_subtitle">#A2B2AB</color>
+    <color name="posthub_widget_status">#5FE0C5</color>
+</resources>

app/src/main/res/values-night/themes.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.PostHUB" parent="android:style/Theme.Material.NoActionBar">
+        <item name="android:fontFamily">sans</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowActionBar">false</item>
+        <item name="android:windowLightStatusBar">false</item>
+        <item name="android:statusBarColor">@color/posthub_canvas</item>
+        <item name="android:navigationBarColor">@color/posthub_canvas</item>
+    </style>
+
+    <style name="Theme.PostHUB.Starting" parent="android:style/Theme.Material.NoActionBar">
+        <item name="android:windowBackground">@drawable/splash_window_background</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowActionBar">false</item>
+        <item name="android:statusBarColor">@color/posthub_canvas</item>
+        <item name="android:navigationBarColor">@color/posthub_canvas</item>
+        <item name="android:windowLightStatusBar">false</item>
+    </style>
+</resources>

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

@@ -7,4 +7,10 @@
     <color name="posthub_border">#DDE4DF</color>
     <color name="posthub_coral">#D84B35</color>
     <color name="posthub_amber">#C47A12</color>
+    <color name="posthub_widget_background">#F7FAF7</color>
+    <color name="posthub_widget_refresh">#006B5B</color>
+    <color name="posthub_widget_pill">#E3F4EF</color>
+    <color name="posthub_widget_title">#17201C</color>
+    <color name="posthub_widget_subtitle">#66736D</color>
+    <color name="posthub_widget_status">#006B5B</color>
 </resources>