#!/bin/bash

cd "$(dirname "$0")"
mkdir stream_archives
cd stream_archives
mkdir $2
cd $2
touch wanin.txt pars.txt parshistory.txt

sheetrss=$(wget -O - -o /dev/null https://www.youtube.com/feeds/videos.xml?channel_id=$1)

parsv=$(sed -n '1p' \
<<< $(sed -rn 's/\s*<link rel=\"alternate\" href=\"(https:\/\/www.youtube.com\/watch\?v=\S{11})"\/>/\1/p' \
<<< $sheetrss))

if [ "$(echo $parsv)" != "" ]
then
  date >>wanin.txt
  if [ "$(cat pars.txt)" = "" ]
  then
    echo $parsv >pars.txt
    echo $parsv >parshistory.txt
  fi
  if [[ ("$(echo $parsv)" != "$(cat pars.txt)") && ("$(echo $parsv)" != "$(cat parshistory.txt)") ]]
  then
    sed -n '2p' \
    <<< $(sed -rn 's/\s*<link rel=\"alternate\" href=\"(https:\/\/www.youtube.com\/watch\?v=\S{11})"\/>/\1/p' \
    <<< $sheetrss) \
    >parshistory.txt
    echo $parsv >pars.txt
    case $2 in
      "touhou") timezonev=$(echo TZ=\":Asia/Tokyo\");;
      *) timezonev=$(echo);;
    esac
    datev=$($timezone date +%Y-%m-%d_%Hh)
    titlev=$(sed -n '1p' \
    <<< $(sed -rn 's/\s*<media:title>(.+)<\/media:title>/\1/p' \
    <<< $sheetrss))
    titlevf=$(echo $2 $datev ／$titlev)
    sed -r 's/<media:description>//; s/<\/media:description>//; 0,/\s*(.*)/{s/\s*(.*)/\1/}' \
    <<< $(awk '/media:description/{f++} f; f>1 {exit}' \
    <<< $sheetrss) \
    >"$titlevf".txt
    streamlink --retry-streams 20 --retry-max 540 -o "$titlevf".ts $parsv best >>wanin.txt
  fi
fi