feat: add mainsail theme installer

scripts/ms_theme_installer.sh

@@ -0,0 +1,78 @@
+### base variables
+SYSTEMDDIR="/etc/systemd/system"
+
+check_select_printer(){
+  unset printer_num
+
+  ### get klipper cfg loc and set default theme loc
+  check_klipper_cfg_path
+  THEME_PATH="$klipper_cfg_loc/.theme"
+
+  ### check if there is more than one moonraker instance and if yes
+  ### ask the user to select the printer he wants to install/remove the theme
+  printer_count=$(ls /etc/systemd/system/moonraker*.service | wc -l)
+  if [ $printer_count -gt 1 ]; then
+    top_border
+    echo -e "|  More than one printer was found on this system!      | "
+    echo -e "|  Please select the printer to which you want to       | "
+    echo -e "|  apply the previously selected action.                | "
+    bottom_border
+    read -p "${cyan}Select printer:${default} " printer_num
+
+    ### rewrite the theme path matching the selected printer
+    THEME_PATH="$klipper_cfg_loc/printer_$printer_num/.theme"
+  fi
+}
+
+ms_theme_delete(){
+  ### check and select printer if there is more than 1
+  check_select_printer
+
+  ### remove .theme folder
+  if [ -d $THEME_PATH ]; then
+    status_msg "Removing Theme ..."
+    rm -rf $THEME_PATH && ok_msg "Theme removed!\n"
+  else
+    status_msg "No Theme installed!\n"
+  fi
+}
+
+ms_theme_dracula(){
+  THEME_RAW_URL="https://raw.githubusercontent.com/steadyjaw/dracula-mainsail-theme/master/config/.theme/"
+
+  ### check and select printer if there is more than 1
+  check_select_printer
+
+  ### list filenames we need to download
+  files=(
+    custom.css
+    favicon-32x32.png
+    favicon-64x64.png
+    sidebar-background.png
+    sidebar-logo.svg
+  )
+
+  ### check for .theme folder
+  [ ! -d $THEME_PATH ] && mkdir -p $THEME_PATH
+  cd $THEME_PATH
+
+  ### download all files
+  status_msg "Installing Dracula theme ..."
+  status_msg "Please wait ..."
+  for file in ${files[@]}
+    do
+      status_msg "Downloading $file ..."
+      wget -q "$THEME_RAW_URL$file" -O $file
+      ok_msg "Done!"
+  done
+
+  ### check if all files got downloaded
+  if [ $(ls | wc -l) = ${#files[@]} ]; then
+    echo
+    ok_msg "Theme installation complete!"
+    ok_msg "Please remember to delete your browser cache!\n"
+  else
+    echo
+    warn_msg "Some files are missing! Please try again!\n"
+  fi
+}