Play a sound on MacOS in zsh terminal after long-running command

.zshrc

# Used for playing sound after a long command is executed
source ~/.zsh/command-sound.zsh

command-sound.zsh

# This is a hook in ZSH that runs before the command execution starts
preexec() {
    cmd_start_time=$(date +%s)
}

# This is a hook in ZSH that runs before each command prompt is displayed
precmd() {
    if [ -n "$cmd_start_time" ]; then
        cmd_end_time=$(date +%s)
        elapsed=$((cmd_end_time - cmd_start_time))
        
        if [ $elapsed -gt 5 ]; then  # 5 seconds threshold
            # Run in background to avoid blocking the terminal
            (afplay /System/Library/Sounds/Blow.aiff 2>/dev/null &)
        fi
        unset cmd_start_time
    fi
}