AppleScript to set a timer to lock the screen of a Mac

lock_screen.scpt

-- Prompt user to enter the delay time in minutes
display dialog "停止までの時間を分単位で入力してください:" default answer "30"
set delayMinutes to text returned of result as integer

-- Convert minutes to seconds and wait
set delaySeconds to delayMinutes * 60
delay delaySeconds

-- Show a notification when the music starts playing
display notification "もうすぐ時間です"


-- Ensure the volume is not muted and is at a reasonable level
set volume output volume 50 -- set to 50%, adjust as necessary

-- Play the MP4 file
set filePath to "music_file.m4a" -- Replace with the full path to your MP4 file
set afplayPID to do shell script "nohup afplay " & quoted form of filePath & " > /dev/null 2>&1 & echo $!"

-- Wait for 10 seconds-- not working as expected
delay 15


-- Stop playback
-- Find and kill the afplay process to stop the audio
do shell script "kill " & afplayPID


-- Lock the screen
do shell script "osascript -e 'tell application \"System Events\" to keystroke \"q\" using {control down, command down}'"