Toggling between iTunes Libraries

iTunesLibraryToggle

#!/usr/bin/env bash
#
# usage: iTunesLibraryToggle [library] [playlist]
# e.g. iTunesLibraryToggle "$HOME/Music/iTunes (Music & Audiobooks)" Audiobooks

iTunesLibraryToggle() {
	# make sure the iTunes directory is, in fact, a symlink
	iTunesDir=$HOME/Music/iTunes
	if [[ ! -d "$iTunesDir" || -L "$iTunesDir" ]] ; then
	
		# check to see if symlink is already pointing at the library we're trying to open
		if ! readlink "$iTunesDir" | grep -q "$1" ; then
		
			# quit iTunes before messing with settings
			if pgrep -xq -- "iTunes" ; then
				printf "Quitting iTunes"
				osascript -e 'quit app "iTunes"'
				while pgrep -xq -- "iTunes"; do
					printf "."
					sleep .25
				done
				printf "\n"
			fi
		
			# reset iTunes database location...
			printf "Nuking iTunes defaults from orbit\n"
			defaults delete com.apple.iTunes 'Database Location'
		
			# ...and link to the new iTunes library location
			printf "Linking $1 as the iTunes Library\n"
			rm "$HOME/Music/iTunes"
			ln -s "$1" "$HOME/Music/iTunes"
		else
			printf "\033[1;32m$1 is already linked as the iTunes Library\033[0m\n"
		fi
	
		# re-open iTunes with new library location
		printf "Opening iTunes\n"
		open "/Applications/iTunes.app"
	
		# open requested playlist (if any)
		case "$2" in
		"Music" | "Audiobooks" | "Movies" | "TV Shows" )
			printf "Opening $2 playlist\n"
			osascript -e "tell application \"iTunes\" to reveal playlist \"$2\""
			;;
		*)
			# do nothing
			;;
		esac
	else
		printf "\033[1;31mThe iTunes directory is not a symlink!\033[0m\n"
	fi
}

iTunesLibraryToggle "$1" "$2"

movies

#!/usr/bin/env bash
iTunesLibraryToggle "$HOME/Music/iTunes (Movies & TV Shows)" Movies

music

#!/usr/bin/env bash
iTunesLibraryToggle "$HOME/Music/iTunes (Music & Audiobooks)" Music