set-selection-as-desktop-picture.applescript

#!/usr/bin/osascript

# Required parameters:
# @raycast.schemaVersion 1
# @raycast.title Set Selection as Desktop Picture
# @raycast.mode silent
# @raycast.packageName System
#
# Optional parameters:
# @raycast.icon 🖼️
#
# Documentation:
# @raycast.description Set selected item in Finder as Desktop Picture
# @raycast.author Dmitry Sumin
# @raycast.authorURL https://github.com/dsumin

tell application "Finder"
	-- get Finder selected items
	set selectedFiles to selection
end tell

if count of selectedFiles > 1 then
	error "Too many files were selected in the Finder!"
end if

set pictureFile to item 1 of selectedFiles

set the fileExtension to the name extension of pictureFile

-- check that a JPG file is selected
if fileExtension = "jpg" or fileExtension = "jpeg"
	-- Set as Desktop Picture
	tell application "Finder"
		set desktop picture to pictureFile
	end tell
else
	error "Selected item is not a jpeg file"
end if