AI-generated command line audio player for macos

play_songs.sh

#!/bin/bash

# Array of songs to play in order
songs=()

# Function to display instructions
display_instructions() {
    echo "==============================================="
    echo "           MUSIC PLAYER CONTROLS              "
    echo "==============================================="
    echo "  p - Pause/Resume current song"
    echo "  n - Skip to next song"
    echo "  q - Quit the player"
    echo "==============================================="
}

# Initialize variables
current_index=0
is_paused=false
player_pid=""
should_exit=false

# Function to get all songs in the current directory by listing all mp3 files
# and storing them in the songs array
get_songs() {
    songs=()
    for song in *.mp3; do
        if [ -f "$song" ]; then
            songs+=("$song")
        fi
    done
}
# Function to play a song
play_song() {
    local song_index=$1
    if [ $song_index -ge ${#songs[@]} ]; then
        echo "End of playlist reached."
        should_exit=true
        return
    fi
    
    current_song="${songs[$song_index]}"
    echo "Now playing: $current_song"
    
    # Play the song in the background and capture its PID
    afplay "$current_song" &
    player_pid=$!
}

# Function to handle pause/resume
toggle_pause() {
    if $is_paused; then
        echo "Resuming playback..."
        kill -CONT $player_pid
        is_paused=false
    else
        echo "Pausing playback..."
        kill -STOP $player_pid
        is_paused=true
    fi
}

# Function to skip to the next song
skip_song() {
    echo "Skipping to next song..."
    if [ -n "$player_pid" ]; then
        kill $player_pid 2>/dev/null
        wait $player_pid 2>/dev/null
    fi
    current_index=$((current_index + 1))
    play_song $current_index
}

# Main function to control the player
run_player() {
    clear
    display_instructions
    get_songs
    if [ ${#songs[@]} -eq 0 ]; then
        echo "No songs found in the current directory."
        exit 1
    fi
    play_song $current_index
    
    # Enable reading a single character without pressing Enter
    stty -echo -icanon min 1
    
    while ! $should_exit; do
        # Check if the current song has finished
        if [ -n "$player_pid" ] && ! kill -0 $player_pid 2>/dev/null; then
            # Song has finished, move to the next one
            current_index=$((current_index + 1))
            if [ $current_index -ge ${#songs[@]} ]; then
                echo "End of playlist reached."
                should_exit=true
            else
                play_song $current_index
            fi
        fi
        
        # Check for user input (non-blocking)
        if read -t 1 -n 1 key; then
            case $key in
                p)
                    toggle_pause
                    ;;
                n)
                    skip_song
                    ;;
                q)
                    echo "Exiting player..."
                    if [ -n "$player_pid" ]; then
                        kill $player_pid 2>/dev/null
                    fi
                    should_exit=true
                    ;;
            esac
        fi
    done
    
    # Restore terminal settings
    stty sane
}

# Start the player
run_player
echo "Music player closed."

Was wanting a low-impact way to play files from the command line without needing an app. macos comes with afplay installed, but I didn't realize it responded to the kill -STOP and kill -CONT options until the AI bot generated this script. The only error the AI made in the script was the -t argument to the bash read command. It attempted a fractional timeout of -t 0.1 so I had to update it to -t 1.