#!/usr/bin/env bash
#  vim:ts=4:sts=4:sw=4:et
#
#  Author: Hari Sekhon
#  Date: 2020-07-02 19:11:12 +0100 (Thu, 02 Jul 2020)
#
#  https://github.com/harisekhon/bash-tools
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
#  https://www.linkedin.com/in/harisekhon
#

set -euo pipefail
[ -n "${DEBUG:-}" ] && set -x
srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# shellcheck disable=SC1090
. "$srcdir/lib/spotify.sh"

# shellcheck disable=SC2034
usage_description="
One-touch Spotify Backup of all or selected Spotify playlists
using code from Spotify Tools and DevOps Bash Tools repos

If playlist args are given then backs up only those playlists

Without args, backs up the entire list of public Spotify playlists

To backup private playlists you must export \$SPOTIFY_PRIVATE=1

For public playlists, \$SPOTIFY_USER must be set in the environment
For private playlist, the user is inferred from the authorized token
"

# used by usage() in lib/utils.sh
# shellcheck disable=SC2034
usage_args="[<playlist> <playlist2> ...]"

help_usage "$@"

if [ -z "${SPOTIFY_BACKUP_DIR:-}" ]; then
    if [[ "$PWD" =~ playlists ]]; then
        export SPOTIFY_BACKUP_DIR="$PWD"
    else
        export SPOTIFY_BACKUP_DIR="$PWD/playlists"
    fi
fi

section "Running Spotify Playlists Backup"

spotify_token

if [ $# -gt 0 ]; then
    echo "Backing up selected playlist(s):"
    echo
    for playlist in "$@"; do
        "$srcdir/spotify_backup_playlist.sh" "$playlist"
    done
    exit 0
fi

mkdir -pv "$SPOTIFY_BACKUP_DIR/spotify"

timestamp "Dumping list of Spotify playlists to $SPOTIFY_BACKUP_DIR/spotify/playlists.txt"
"$srcdir/spotify_playlists.sh" > "$SPOTIFY_BACKUP_DIR/spotify/playlists.txt"
echo >&2

timestamp "Stripping spotify playlist IDs from $SPOTIFY_BACKUP_DIR/spotify/playlists.txt => $SPOTIFY_BACKUP_DIR/playlists.txt"
sed 's/^[^[:space:]]*[[:space:]]*//' "$SPOTIFY_BACKUP_DIR/spotify/playlists.txt" > "$SPOTIFY_BACKUP_DIR/playlists.txt"
echo >&2

"$srcdir/spotify_backup_playlists.sh"