FVKeyboard

#!/bin/sh

# FVKeyboard is a script that gets the current keyboard layout from the user and sets it at the top
# of the plist that handles the keyboard layouts on the FileVault screen, thus making sure the user
# gets the preferred layout at each boot.
# Recommended to set as a SelfService policy or an automated execution after FileVault is enabled.
# Tested on macOS 10.14 and 10.15 beta

langPlist="/Library/Preferences/com.apple.HIToolbox.plist"

# Using the $3 as the username from JAMF.
userName=$3
plistBuddy='/usr/libexec/PlistBuddy'
 
topLanguageName=$($plistBuddy -c "Print :AppleEnabledInputSources"  "/Users/$userName/Library/Preferences/com.apple.HIToolbox.plist" | grep -m 1  "KeyboardLayout Name" | awk -F' = ' '{print $2}')
topLanguageID=$($plistBuddy -c "Print :AppleEnabledInputSources"  "/Users/$userName/Library/Preferences/com.apple.HIToolbox.plist" | grep -m 1  "KeyboardLayout ID" | awk -F' = ' '{print $2}')

echo "Will set to $topLanguageName - $topLanguageID"

# In case the PLIST doesn't exist, create it and define the array of input sources.
if [[ ! -f "$langPlist" ]]; then
  touch "$langPlist"
  defaults write $langPlist AppleEnabledInputSources -array 2>/dev/null
else
  # Added for Monterey: In case it exists, first delete the dictionary to be able add it later.
  $plistBuddy -c "Delete :AppleEnabledInputSources:0" $langPlist
fi

$plistBuddy -c "Add :AppleEnabledInputSources:0 dict" $langPlist
$plistBuddy -c "Add :AppleEnabledInputSources:0:InputSourceKind string 'Keyboard Layout'" $langPlist
$plistBuddy -c "Add :AppleEnabledInputSources:0:'KeyboardLayout Name' string '${topLanguageName}'" $langPlist
$plistBuddy -c "Add :AppleEnabledInputSources:0:'KeyboardLayout ID' integer ${topLanguageID}" $langPlist

exit 0