get-youtube-playlist.sh

#!/bin/bash

# Function to display usage information
usage() {
    echo "Usage: $0 [OPTIONS] <YouTube Playlist URL>"
    echo "Options:"
    echo "  -o, --output FILENAME    Specify custom output filename"
    echo "  -f, --format FORMAT      Specify output format (default: full, options: full, simple)"
    echo "  -h, --help               Display this help message"
    exit 1
}

# Initialize variables
OUTPUT_FILE=""
FORMAT="full"

# Parse command line options
while [[ $# -gt 0 ]]; do
    case $1 in
        -o|--output)
            OUTPUT_FILE="$2"
            shift 2
            ;;
        -f|--format)
            FORMAT="$2"
            shift 2
            ;;
        -h|--help)
            usage
            ;;
        *)
            PLAYLIST_URL="$1"
            shift
            ;;
    esac
done

# Check if required tools are installed
for cmd in yt-dlp jq; do
    if ! command -v $cmd &> /dev/null; then
        echo "$cmd could not be found. Please install it first."
        exit 1
    fi
done

# Check if a URL was provided
if [ -z "$PLAYLIST_URL" ]; then
    echo "Error: Please provide a YouTube playlist URL."
    usage
fi

# Validate URL format
if [[ ! $PLAYLIST_URL =~ ^https?://.*youtube\.com/playlist\?list= ]]; then
    echo "Error: Invalid YouTube playlist URL format."
    exit 1
fi

# Set default output filename if not specified
if [ -z "$OUTPUT_FILE" ]; then
    OUTPUT_FILE="playlist_info_$(date +%Y%m%d_%H%M%S).txt"
fi

echo "Fetching playlist information..."

# Prepare jq command based on format
if [ "$FORMAT" = "simple" ]; then
    JQ_CMD='"\(.id)\t\(.title)"'
else
    JQ_CMD='"https://youtu.be/\(.id)\t\(.title)\t\(.uploader)\t\(.duration_string)"'
fi

# Run the yt-dlp command and save the output
yt-dlp -j --verbose --flat-playlist "$PLAYLIST_URL" | \
jq -r "$JQ_CMD" > "$OUTPUT_FILE"

# Check if the command was successful
if [ $? -eq 0 ]; then
    echo "Playlist information has been saved to $OUTPUT_FILE"
    echo "Number of videos processed: $(wc -l < "$OUTPUT_FILE")"
else
    echo "An error occurred while processing the playlist."
    exit 1
fi