From a4dd8e29c22aa48b39fdabfd6fd489a16d81d9c9 Mon Sep 17 00:00:00 2001
From: Den <DenBond7@gmail.com>
Date: Tue, 15 Nov 2022 14:09:52 +0200
Subject: [PATCH] Fixed day/night UI issue (#2074)

* Fixed NPE in GmailApiHelper.generateGmailApiService().| #2072

* Modified WebView.setupDayNight(). Step 2.| #2026

* Modified WebView.setupDayNight(). Step 3.| #2026
---
 .../extensions/android/webkit/WebViewExt.kt   | 33 ++++++++++++++-----
 1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/FlowCrypt/src/main/java/com/flowcrypt/email/extensions/android/webkit/WebViewExt.kt b/FlowCrypt/src/main/java/com/flowcrypt/email/extensions/android/webkit/WebViewExt.kt
index 963be35ff7..72fcd2f9cb 100644
--- a/FlowCrypt/src/main/java/com/flowcrypt/email/extensions/android/webkit/WebViewExt.kt
+++ b/FlowCrypt/src/main/java/com/flowcrypt/email/extensions/android/webkit/WebViewExt.kt
@@ -7,6 +7,7 @@ package com.flowcrypt.email.extensions.android.webkit
 
 import android.content.res.Configuration
 import android.graphics.Color
+import android.os.Build
 import android.webkit.WebView
 import androidx.webkit.WebSettingsCompat
 import androidx.webkit.WebViewFeature
@@ -18,15 +19,31 @@ import androidx.webkit.WebViewFeature
  *         E-mail: DenBond7@gmail.com
  */
 fun WebView.setupDayNight() {
-  if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
-    setBackgroundColor(Color.TRANSPARENT)
-    when (resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) {
-      Configuration.UI_MODE_NIGHT_YES -> {
-        WebSettingsCompat.setForceDark(settings, WebSettingsCompat.FORCE_DARK_ON)
-      }
-      Configuration.UI_MODE_NIGHT_NO, Configuration.UI_MODE_NIGHT_UNDEFINED -> {
-        WebSettingsCompat.setForceDark(settings, WebSettingsCompat.FORCE_DARK_OFF)
+  setBackgroundColor(Color.TRANSPARENT)
+  if (WebViewFeature.isFeatureSupported(WebViewFeature.ALGORITHMIC_DARKENING)) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+      WebSettingsCompat.setAlgorithmicDarkeningAllowed(settings, true)
+    }
+  } else {
+    if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
+      when (resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) {
+        Configuration.UI_MODE_NIGHT_YES -> {
+          @Suppress("DEPRECATION")
+          WebSettingsCompat.setForceDark(settings, WebSettingsCompat.FORCE_DARK_ON)
+        }
+        Configuration.UI_MODE_NIGHT_NO, Configuration.UI_MODE_NIGHT_UNDEFINED -> {
+          @Suppress("DEPRECATION")
+          WebSettingsCompat.setForceDark(settings, WebSettingsCompat.FORCE_DARK_OFF)
+        }
       }
     }
+
+    if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK_STRATEGY)) {
+      @Suppress("DEPRECATION")
+      WebSettingsCompat.setForceDarkStrategy(
+        settings,
+        WebSettingsCompat.DARK_STRATEGY_PREFER_WEB_THEME_OVER_USER_AGENT_DARKENING
+      )
+    }
   }
 }