#!/bin/sh

VIDE_DIR="/var/tank/videos/Videos/"
PLAY_DIR="/var/tank/videos/Playlists/"

LAST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/video_download"

get_videos () {
  cd "$VIDE_DIR" || exit 1
  yt-dlp "$(cat url.txt)"
  date '+%s' > "${LAST_FILE}.video.txt"
}

get_playlists () {
  cd "$PLAY_DIR" || exit 1
  find ./* -maxdepth 1 -type d | while read -r subdir; do
    cd "$PLAY_DIR/$subdir" || exit 1
    yt-dlp "$(cat url.txt)"
  done
}

if [ ! -f "${LAST_FILE}.video.txt" ] || [ "$(tail -1 "${LAST_FILE}.video.txt")" -lt "$(find "${VIDE_DIR}url.txt" -printf '%Cs\n')" ]; then
  get_videos
fi

if [ ! -f "${LAST_FILE}.playlist.txt" ] || [ "$(tail -1 "${LAST_FILE}.playlist.txt")" -lt "$(find "${PLAY_DIR}" -name 'url.txt' -printf '%Cs\n' | sort -n | tail -1)" ]; then
  get_playlists
fi