try
	-- Set PATH to include Homebrew's default locations
	set shellPath to "PATH=/usr/local/bin:/opt/homebrew/bin:/usr/bin:/bin:/usr/sbin:/sbin"

	-- Check if yt-dlp is installed via Homebrew
	do shell script shellPath & " command -v yt-dlp >/dev/null 2>&1"
on error
	-- Prompt user to install yt-dlp via Homebrew
	display dialog "yt-dlp is not installed. Would you like to install it via Homebrew?" buttons {"Cancel", "Install"} default button "Install"

	-- Install Homebrew if it's not found
	try
		do shell script shellPath & " command -v brew >/dev/null 2>&1"
	on error
		display dialog "Homebrew is not installed. Would you like to install it?" buttons {"Cancel", "Install"} default button "Install"
		do shell script "/bin/bash -c \"$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)\""
	end try

	-- Install yt-dlp using Homebrew
	do shell script shellPath & " brew install yt-dlp"
end try

tell application "Safari"
	-- Get the URL of the frontmost tab in Safari
	set theURL to URL of current tab of front window
end tell

-- Remove playlist parameters from the URL
if theURL contains "&" then
	set andOffset to offset of "&" in theURL
	set theURL to characters 1 thru (andOffset - 1) of theURL as string
end if

-- Check if the URL has a valid video
try
	-- Use yt-dlp to probe the URL (it will fail if no video is found)
	do shell script shellPath & " yt-dlp --get-title " & quoted form of theURL
on error
	-- Display an error message if the URL is invalid or doesn't contain a video
	display dialog "The URL does not appear to contain a valid video." buttons {"OK"} default button "OK"
	return
end try

-- Get video title and duration
set videoInfo to (do shell script shellPath & " yt-dlp --get-title --get-duration " & quoted form of theURL)
set videoTitle to paragraph 1 of videoInfo
set videoDuration to paragraph 2 of videoInfo

-- Confirm download with the user
display dialog "Do you want to download this video?

" & videoTitle & " (" & videoDuration & ")" buttons {"Cancel", "Download"} default button "Download"

-- Download the video to the Downloads folder
do shell script "cd ~/Downloads && " & shellPath & " yt-dlp -f 'best' -i -o \"%(title)s.%(ext)s\" " & quoted form of theURL

-- Success message
display dialog "Your video has been downloaded successfully." buttons {"OK"} default button "OK"

-- Update yt-dlp
set updateResult to (do shell script shellPath & " brew upgrade yt-dlp || true")
if updateResult contains "Upgrading" then
	display dialog "yt-dlp has been updated to the latest version." buttons {"OK"} default button "OK"
end if