From 546463dda3ec996b1f8368ea92409a1a40fceea2 Mon Sep 17 00:00:00 2001
From: Luke Hubmayer-Werner <mongoose41@gmail.com>
Date: Fri, 26 Jul 2024 21:54:00 +0930
Subject: [PATCH] Handle android file permissions.

---
 widgets/FileSelect.gd | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/widgets/FileSelect.gd b/widgets/FileSelect.gd
index 14e4732..10d32f5 100644
--- a/widgets/FileSelect.gd
+++ b/widgets/FileSelect.gd
@@ -13,6 +13,7 @@ const TYPE_DESCS := globals.TYPE_DESCS
 
 enum {SELECT_ROM, SELECT_SAVE, COMPLETE}
 var current_mode = SELECT_ROM
+var android_permissions_granted := false
 
 var cached_cd_bin_paths := {}
 var dir := Directory.new()
@@ -53,6 +54,23 @@ static func join_path(tokens) -> String:
 	var path = '/'.join(tokens)
 	return path if path else '/'
 
+const REQUIRED_ANDROID_PERMISSIONS := PoolStringArray(['MANAGE_EXTERNAL_FILES', 'READ_EXTERNAL_FILES', 'WRITE_EXTERNAL_FILES'])
+func check_android_permissions() -> bool:
+	if self.android_permissions_granted:
+		return true
+	var permissions_granted := OS.get_granted_permissions()
+	for perm in REQUIRED_ANDROID_PERMISSIONS:
+		if not (perm in permissions_granted):
+			return false
+	self.android_permissions_granted = true
+	return true
+func update_android_permissions() -> void:
+	if not OS.has_feature('Android'):
+		return
+	if self.check_android_permissions():
+		return
+	OS.request_permissions()
+
 func update_view():
 	var error = dir.list_dir_begin(true, true)
 	if error != OK:
@@ -212,8 +230,10 @@ func init_labels():
 
 func _ready() -> void:
 	init_labels()
-	if OS.has_feature('windows'):
+	if OS.has_feature('Windows'):
 		home_path = OS.get_environment('USERPROFILE')
+	elif OS.has_feature('Android'):
+		home_path = '/storage/emulated/0/Download/'
 	else:
 		home_path = OS.get_environment('HOME')
 	# dir.open(OS.get_system_dir(OS.SYSTEM_DIR_DOWNLOADS))
@@ -233,12 +253,19 @@ func _ready() -> void:
 	print(ProjectSettings.globalize_path('user://'))
 	print(ProjectSettings.globalize_path(dir.get_current_dir()))
 	get_tree().connect('files_dropped', self, '_files_dropped')
+	get_tree().connect('on_request_permissions_result', self, '_on_request_permissions_result')
+	self.update_android_permissions()
 
 func _files_dropped(filenames: PoolStringArray, screen_idx: int) -> void:
 	print('Files Dropped signal: screen=%d, files='%screen_idx, filenames)
 	for filename in filenames:
 		load_file(filename, true)
 
+func _on_request_permissions_result(permission: String, granted: bool) -> void:
+	print('_on_request_permissions_result: %s = %s' % [permission, granted])
+	# if granted and (permission in REQUIRED_ANDROID_PERMISSIONS):
+	self.call_deferred('update_view')
+
 func _update_config() -> void:
 	var d = self.dir.get_current_dir()
 	if d != Common.config.get_value('filesystem', 'last_used_directory'):