#! /bin/bash

main() {
   set -eo pipefail

   if ! which pip3; then
      if which apk; then
         apk update && apk add py3-pip
      else
         apt install -y pip3
      fi
   fi

   cd_work_d

   ytdlp2STRM_d=./ytdlp2STRM
   ensure_ytdlp2STRM_git "$ytdlp2STRM_d"

   head_ts="$(cd "$ytdlp2STRM_d"; git log -n 1 --format=%as)"
   echo head_ts=$head_ts

   yt_dlp_latest="$(
      pip3 index versions yt-dlp \
      | grep '^Available.versions:' \
      | tr ' ' '\n' \
      | grep -v 'Available.versions:' \
      | sort -n \
      | tail -n 1 \
      | tr -d ','
   )"
   echo yt_dlp_latest=$yt_dlp_latest

   img=registry-app.inhome.blapointe.com:5001/bel/ytdlp2strm
   tag=${head_ts}-${yt_dlp_latest}
   if docker pull $img:$tag; then
      exit 0
   fi

   cd "$ytdlp2STRM_d"
   docker build -t "$img:$tag" .
   docker tag "$img:$tag" "$img:latest"
   $DEBUG docker push "$img:$tag"
   $DEBUG docker push "$img:latest"
}

cd_work_d() {
   d="$PWD"
   mkdir -p ./work.d
   cd ./work.d
   cleanup() {
      cd "$d"
      $DEBUG rm -rf ./work.d || true
   }
   trap cleanup EXIT
}

ensure_ytdlp2STRM_git() {
   if [ ! -d "$1" ]; then
      git clone --depth=1 \
         https://github.com/fe80Grau/ytdlp2STRM.git \
         "$1"
   fi
}

if [ "$0" == "$BASH_SOURCE" ]; then
   main "$@"
fi