From accbcf1436ff5a17ac49bc5c224d7f8029bf4ae2 Mon Sep 17 00:00:00 2001
From: Jan Henning <jh+vsc-hg@buttercookie.de>
Date: Sun, 21 Jan 2024 20:55:19 +0100
Subject: [PATCH] Add special backup action for adaptive brightness data

Searching through the code in
frameworks/base/services/core/java/com/android/server/display/, these two files
are the relevant ones.

Adaptive brightness in its current form was introduced for Android 9, and as per
https://cs.android.com/android/_/android/platform/frameworks/base/+/3d9c19f2fd34cccac6fe09877ae9a6b4563a063e
the storage directory moved from /data/system_de to /data/system for Android 14.

Restoring this data will likely be a bit tricky, because it seems the files are
only read on startup, and afterwards the BrightnessTracker will always write
back its in-memory values, overwriting any other data that might be present on
disk.

Since the BrightnessTracker also writes its state during a regular reboot, it
seems the only thing that could possibly work (other than an offline-restore
through recovery or whatever) would be an immediate abrupt reboot through the
`reboot` command. I haven't tested this, though, because I didn't want to mess
with my phone's adaptive brightness data (which currently works very nicely).
---
 .../backup/dbs/entity/SpecialInfo.kt          |  28 ++
 .../res/drawable/ic_adaptive_brightness.xml   | 242 ++++++++++++++++++
 app/src/main/res/values-de/strings.xml        |   1 +
 app/src/main/res/values/strings.xml           |   1 +
 4 files changed, 272 insertions(+)
 create mode 100644 app/src/main/res/drawable/ic_adaptive_brightness.xml

diff --git a/app/src/main/java/com/machiav3lli/backup/dbs/entity/SpecialInfo.kt b/app/src/main/java/com/machiav3lli/backup/dbs/entity/SpecialInfo.kt
index 8a3f6893a9..0f939882a3 100644
--- a/app/src/main/java/com/machiav3lli/backup/dbs/entity/SpecialInfo.kt
+++ b/app/src/main/java/com/machiav3lli/backup/dbs/entity/SpecialInfo.kt
@@ -104,6 +104,7 @@ open class SpecialInfo : PackageInfo {
                     val systemDir = "/data/system"
                     val userDir = "$systemDir/users/$userId"
                     val systemCeDir = "/data/system_ce/$userId"
+                    val systemDeDirGlobal = "/data/system_de"
                     val vendorDeDir = "/data/vendor_de/$userId"
                     val specPrefix = "$ "
 
@@ -142,6 +143,33 @@ open class SpecialInfo : PackageInfo {
                                 ), R.drawable.ic_accounts
                             )
                         )
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+                        val brightnessStatsBaseDir = if (Build.VERSION.SDK_INT <
+                            Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+                            systemDeDirGlobal
+                        } else {
+                            systemDir
+                        }
+                        specialInfos
+                            .add(
+                                SpecialInfo(
+                                    "special.adaptive.brightness",
+                                    specPrefix + context.getString(R.string.spec_adaptiveBrightness),
+                                    Build.VERSION.RELEASE,
+                                    Build.VERSION.SDK_INT, arrayOf(
+                                        // Note: Restoring these files very likely only works if
+                                        // the device is abruptly rebooted after restoring them.
+                                        // Also for a full backup of the adaptive brightness data,
+                                        // the Device Health Service's app data needs to be backed
+                                        // up, too.
+                                        "$brightnessStatsBaseDir/ambient_brightness_stats.xml",
+                                        "$brightnessStatsBaseDir/brightness_events.xml",
+                                        "$systemDir/display-manager-state.xml"
+                                    ),
+                                    R.drawable.ic_adaptive_brightness
+                                )
+                            )
+                    }
                     specialInfos
                         .add(
                             SpecialInfo(
diff --git a/app/src/main/res/drawable/ic_adaptive_brightness.xml b/app/src/main/res/drawable/ic_adaptive_brightness.xml
new file mode 100644
index 0000000000..c40d01413a
--- /dev/null
+++ b/app/src/main/res/drawable/ic_adaptive_brightness.xml
@@ -0,0 +1,242 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+ ~ Neo Backup: open-source apps backup and restore app.
+ ~ Copyright (C) 2020  Antonios Hazim
+ ~
+ ~ This program is free software: you can redistribute it and/or modify
+ ~ it under the terms of the GNU Affero General Public License as
+ ~ published by the Free Software Foundation, either version 3 of the
+ ~ License, or (at your option) any later version.
+ ~
+ ~ This program is distributed in the hope that it will be useful,
+ ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ ~ GNU Affero General Public License for more details.
+ ~
+ ~ You should have received a copy of the GNU Affero General Public License
+ ~ along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="38dp"
+    android:height="38dp"
+    android:viewportWidth="32"
+    android:viewportHeight="32">
+
+    <path
+        android:fillColor="@color/ic_special"
+        android:pathData="M16,16m-16,0a16,16 0,1 1,32 0a16,16 0,1 1,-32 0" />
+
+    <group
+        android:scaleX="0.295"
+        android:scaleY="0.295">
+
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M9,27L9,81"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M19,15L19,93"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M29,8L29,100"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M39,4L39,104"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M49,2L49,106"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M59,2L59,106"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M69,4L69,104"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M79,8L79,100"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M89,15L89,93"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M99,27L99,81"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M27,9L81,9"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M15,19L93,19"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M8,29L100,29"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M4,39L104,39"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M2,49L106,49"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M2,59L106,59"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M4,69L104,69"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M8,79L100,79"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M15,89L93,89"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M27,99L81,99"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M19,29L89,29"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M19,39L89,39"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M19,49L89,49"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M19,59L89,59"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M19,69L89,69"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M19,79L89,79"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M29,19L29,89"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M39,19L39,89"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M49,19L49,89"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M59,19L59,89"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M69,19L69,89"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M79,19L79,89"
+            android:strokeWidth="0.8"
+            android:strokeColor="#55FFFFFF" />
+    </group>
+
+    <group
+        android:scaleX="0.085"
+        android:scaleY="0.085"
+        android:translateX="5"
+        android:translateY="5">
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M128,140m-40,0a40,40 0,1 1,80 0a40,40 0,1 1,-80 0"
+            android:strokeWidth="16"
+            android:strokeColor="?backgroundColor"
+            android:strokeLineCap="round"
+            android:strokeLineJoin="round" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M196,116a59.8,59.8 0,0 1,48 24"
+            android:strokeWidth="16"
+            android:strokeColor="?backgroundColor"
+            android:strokeLineCap="round"
+            android:strokeLineJoin="round" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M12,140a59.8,59.8 0,0 1,48 -24"
+            android:strokeWidth="16"
+            android:strokeColor="?backgroundColor"
+            android:strokeLineCap="round"
+            android:strokeLineJoin="round" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M70.4,216a64.1,64.1 0,0 1,115.2 0"
+            android:strokeWidth="16"
+            android:strokeColor="?backgroundColor"
+            android:strokeLineCap="round"
+            android:strokeLineJoin="round" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M60,116A32,32 0,1 1,91.4 78"
+            android:strokeWidth="16"
+            android:strokeColor="?backgroundColor"
+            android:strokeLineCap="round"
+            android:strokeLineJoin="round" />
+        <path
+            android:fillColor="#00000000"
+            android:pathData="M164.6,78A32,32 0,1 1,196 116"
+            android:strokeWidth="16"
+            android:strokeColor="?backgroundColor"
+            android:strokeLineCap="round"
+            android:strokeLineJoin="round" />
+    </group>
+</vector>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index dca50fa814..1c960dff07 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -406,4 +406,5 @@
     <string name="prefs_theme_dynamic_light">Hell mit dynamischen Farben</string>
     <string name="prefs_theme_system_black">Systemthema (Schwarz)</string>
     <string name="prefs_theme_dynamic_dark">Dunkel mit dynamischen Farben</string>
+    <string name="spec_adaptiveBrightness">Automatische Helligkeit</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b51858d768..16f683bd54 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -232,6 +232,7 @@
     <string name="spec_wallpaper">Wallpaper</string>
     <string name="spec_fingerprint">Fingerprints</string>
     <string name="spec_wifiAccessPoints">Wireless access points</string>
+    <string name="spec_adaptiveBrightness">Adaptive brightness</string>
     <string name="error_creating_notification_channel">Unable to create notification channel</string>
     <string name="error_updating_schedule_mode">Error updating %1$s of schedule %2$d</string>
     <string name="permission_not_granted">Permission to access external storage is required</string>