fix: Do not depend on raspi-config for boot_screen

installation/options/boot_screen.sh

@@ -11,12 +11,32 @@ fi
 arg="$1"
 boot_config_path=$(get_boot_config_path)
 
+_enable_boot_screen() {
+    sudo sed -i 's/^disable_splash=1/disable_splash=0/' "$boot_config_path"
+    if ! grep -q "^disable_splash" "$boot_config_path"; then
+        echo "disable_splash=0" | sudo tee -a "$boot_config_path"
+    fi
+}
+
+_disable_boot_screen() {
+    sudo sed -i 's/^disable_splash=0/disable_splash=1/' "$boot_config_path"
+    if ! grep -q "^disable_splash" "$boot_config_path"; then
+        echo "disable_splash=1" | sudo tee -a "$boot_config_path"
+    fi
+}
+
+# Logic
 if [ "$arg" = "enable" ]; then
     print_lc "Enabling RPi rainbow screen..."
-    sudo raspi-config nonint do_boot_splash 0
+    _enable_boot_screen
 elif [ "$arg" = "disable" ]; then
     print_lc "Disabling RPi rainbow screen..."
-    sudo raspi-config nonint do_boot_splash 1
+    _disable_boot_screen
 fi
 
-# Test, no test required. Depending on raspi-config to test
+# Tests
+if [ "$arg" = "enable" ]; then
+    verify_file_does_not_contain_string "disable_splash=" "${boot_config_path}"
+elif [ "$arg" = "disable" ]; then
+    verify_file_contains_string_once "disable_splash=1" "${boot_config_path}"
+fi