fix(theme): keep the bar-icon override across config-change replays (#70)

Reviewed-on: https://codeberg.org/jlmakiola/calendula/pulls/110

.gitea/workflows/release.yaml

@@ -635,9 +635,13 @@ jobs:
           FASTLANE_HIDE_CHANGELOG: '1'
         run: |
           set -euo pipefail
-          test -f "dist/app-release.aab"
+          AAB="$GITHUB_WORKSPACE/dist/app-release.aab"
+          # Absolute, because a lane body runs from fastlane/, not the
+          # workspace root — a relative path resolves against the wrong
+          # directory there and 2.17.1 died on exactly that.
+          test -f "$AAB" || { echo "No AAB at $AAB — the artifact handoff failed." >&2; ls -la dist || true; exit 1; }
           bundle exec fastlane deploy \
-            aab:"dist/app-release.aab" \
+            aab:"$AAB" \
             track:"$PLAY_TRACK" \
             release_status:"$PLAY_RELEASE_STATUS" \
             dry_run:"$PLAY_DRY_RUN"

app/src/main/java/de/jeanlucmakiola/calendula/MainActivity.kt

@@ -2,9 +2,11 @@ package de.jeanlucmakiola.calendula
 
 import android.content.Context
 import android.content.Intent
+import android.content.res.Configuration
 import android.net.Uri
 import android.os.Bundle
 import android.provider.CalendarContract
+import androidx.activity.SystemBarStyle
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
@@ -12,6 +14,7 @@ import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -53,6 +56,11 @@ import kotlin.time.Instant
 @AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
 
+    // Which of light/dark the system bars are drawn for. The styles installed
+    // in onCreate read this field live, so androidx's config-change replay
+    // picks up the in-app override instead of the night resource qualifier.
+    private var systemBarsDark = false
+
     // The occurrence a reminder notification was tapped for (eventId, begin,
     // end — the detail screen's key shape). singleTop + onNewIntent route a
     // tap into the running activity; CalendarHost consumes and clears it.
@@ -96,7 +104,9 @@ class MainActivity : AppCompatActivity() {
             return
         }
 
-        enableEdgeToEdge()
+        systemBarsDark = resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK ==
+            Configuration.UI_MODE_NIGHT_YES
+        applyEdgeToEdge()
         requestedDetailKey = intent.detailKeyOrNull() ?: intent.viewEventKeyOrNull()
         requestedNav = intent.navRequestOrNull()
         requestedImportUri = intent.importUriOrNull()
@@ -113,6 +123,14 @@ class MainActivity : AppCompatActivity() {
                 ThemeMode.LIGHT -> false
                 ThemeMode.DARK -> true
             }
+            // onCreate can only see the night resource qualifier, not the in-app
+            // override — re-apply from the resolved theme so the bar icons follow
+            // the app's light/dark choice.
+            DisposableEffect(darkTheme) {
+                systemBarsDark = darkTheme
+                applyEdgeToEdge()
+                onDispose {}
+            }
             // The app-wide clock convention: the time-format preference resolved
             // against the device's 24-hour system setting, provided once here so
             // every time label reads it via LocalUse24HourFormat.
@@ -181,6 +199,19 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    /**
+     * Applies the transparent edge-to-edge bars for the current [systemBarsDark].
+     * Both scrims are transparent because API 29+ enforces its own contrast and
+     * ignores them anyway.
+     */
+    private fun applyEdgeToEdge() {
+        val transparent = android.graphics.Color.TRANSPARENT
+        enableEdgeToEdge(
+            statusBarStyle = SystemBarStyle.auto(transparent, transparent) { systemBarsDark },
+            navigationBarStyle = SystemBarStyle.auto(transparent, transparent) { systemBarsDark },
+        )
+    }
+
     override fun onResume() {
         super.onResume()
         // Reaching a running UI means startup succeeded; reset the loop trail.

fastlane/Fastfile

@@ -14,10 +14,17 @@
 
 default_platform(:android)
 
+# fastlane runs a lane body with the working directory set to `fastlane/`, not
+# the project root, so a relative artifact path from the caller has to be
+# resolved explicitly. Absolute paths pass through untouched.
+def project_path(path)
+  File.expand_path(path, File.expand_path("..", FastlaneCore::FastlaneFolder.path || "."))
+end
+
 platform :android do
   desc "Upload an already-built, already-signed AAB to Play"
   lane :deploy do |options|
-    aab = options[:aab] || "app/build/outputs/bundle/release/app-release.aab"
+    aab = project_path(options[:aab] || "app/build/outputs/bundle/release/app-release.aab")
     UI.user_error!("AAB not found at #{aab}") unless File.exist?(aab)
 
     supply(