fix: [Tablet] File access support on Android

- adjust the permissions/features according to the docu
- do not use a `TMPDIR` when saving/resizing a file from NIM, it doesn't
work on mobile; use one from QStandardPaths which has an Android
specific implementation
(https://github.com/qt/qtbase/blob/dev/src/corelib/io/qstandardpaths_android.cpp)

Fixes #18076
Fixes #19053

Author: caybro

mobile/android/qt6/AndroidManifest.xml

@@ -13,19 +13,19 @@
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.USE_BIOMETRIC" />
+
+    <!-- features -->
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
+    <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
+    <uses-feature android:name="android.hardware.fingerprint" android:required="false" />
 
     <!-- dangerous permissions -->
-    <uses-permission android:name="android.permission.CAMERA"/>
-    <uses-feature android:name="android.hardware.camera" />
-    <uses-feature android:name="android.hardware.camera.autofocus" />
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_VISUAL_USER_SELECTED" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
-    <uses-permission android:name="android.permission.USE_FINGERPRINT" />
-    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
-    <uses-permission android:name="android.permission.RECORD_AUDIO" />
-    
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
     <supports-screens
         android:anyDensity="true"
         android:largeScreens="true"

src/app_service/service/chat/async_tasks.nim

@@ -105,7 +105,6 @@ type
   AsyncSendImagesTaskArg = ref object of QObjectTaskArg
     chatId: string
     imagePathsJson: string
-    tempDir: string
     msg: string
     replyTo: string
     preferredUsername: string
@@ -118,14 +117,12 @@ const asyncSendImagesTask: Task = proc(argEncoded: string) {.gcsafe, nimcall.} =
   try:
     var images = Json.decode(arg.imagePathsJson, seq[string])
     var imagePaths: seq[string] = @[]
-    var tempPaths: seq[string] = @[]
 
     for imagePathOrSource in images.mitems:
       if utils.isBase64DataUrl(imagePathOrSource):
-        let imagePath = save_byte_image_to_file(imagePathOrSource, arg.tempDir)
+        let imagePath = save_byte_image_to_file(imagePathOrSource)
         if imagePath != "":
           imagePaths.add(imagePath)
-          tempPaths.add(imagePath)
       else:
         imagePaths.add(imagePathOrSource)
 
@@ -140,9 +137,6 @@ const asyncSendImagesTask: Task = proc(argEncoded: string) {.gcsafe, nimcall.} =
       arg.paymentRequests
     )
 
-    for imagePath in tempPaths:
-      removeFile(imagePath)
-
     arg.finish(%* {
       "response": response,
       "chatId": arg.chatId,

src/app_service/service/chat/service.nim

@@ -15,7 +15,6 @@ import backend/group_chat as status_group_chat
 import app/global/[global_singleton, utils]
 import app/core/eventemitter
 import app/core/signals/types
-import constants
 
 import ../../common/message as message_common
 
@@ -428,7 +427,6 @@ QtObject:
         slot: "onAsyncSendImagesDone",
         chatId: chatId,
         imagePathsJson: imagePathsJson,
-        tempDir: TMPDIR.replace("\\", "\\\\"), # Escape backslashes so that the JSON sent is valid (Windows issue)
         msg: msg,
         replyTo: replyTo,
         preferredUsername: preferredUsername,