theme.park/docker-mods/qbittorrent/root/etc/cont-init.d/98-themepark

#!/command/with-contenv bash 

echo '------------------------------'
echo '| qBittorrent theme.park Mod |'
echo '------------------------------'

APP_FILEPATH='/config/qBittorrent/qBittorrent.conf'
if [ "${TP_HOTIO}" = true ]; then
    echo 'Changing to Hotio file path!'
    APP_FILEPATH='/config/config/qBittorrent.conf'
fi

# Backup config
if [[ ! -f "${APP_FILEPATH}.bak" ]]; then
    echo "Creating qBittorrent.conf backup in /config."
	cp -p ${APP_FILEPATH} "${APP_FILEPATH}.bak"
fi

# Restore qBittorrent.conf
if [ "${TP_DISABLE_THEME}" = true ]; then
  echo "Restoring backup of qBittorrent.conf" 
  sed -i "s/WebUI\\\AlternativeUIEnabled=.*$/WebUI\\\AlternativeUIEnabled=false/g" "${APP_FILEPATH}";
  exit 0
fi

if [ -z ${QBITTORRENT_VERSION+x} ]; then \
    echo 'QBITTORRENT_VERSION not set. Using the latest stable.'
    QBITTORRENT_VERSION=$(curl -sL "http://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz" | tar -xz -C /tmp \
    && awk '/^P:qbittorrent-nox$/,/V:/' /tmp/APKINDEX | sed -n 2p | sed 's/^V://' | sed 's/-.*//'); \
fi

if ! [[ -x "$(command -v git)" ]]; then
echo '--------------------------'
echo '| Installing git package |'
echo '--------------------------'
    if [ -x "$(command -v apk)" ]; then 
      apk update && \
      apk add --no-cache git
      apk add --no-cache perl
    elif [ -x "$(command -v apt-get)" ]; then
      apt-get update && \
      apt-get install -y git
      apt-get install -y perl
    fi
fi

# Display variables for troubleshooting 
echo -e "Variables set:\\n\
'APP_FILEPATH'=${APP_FILEPATH}\\n\
'TP_DISABLE_THEME'=${TP_DISABLE_THEME}\\n\
'TP_HOTIO'=${TP_HOTIO}\\n\
'TP_DOMAIN'=${TP_DOMAIN}\\n\
'TP_COMMUNITY_THEME'=${TP_COMMUNITY_THEME}\\n\
'TP_SCHEME'=${TP_SCHEME}\\n\
'QBITTORRENT_VERSION'=${QBITTORRENT_VERSION}\\n\
'TP_THEME'=${TP_THEME}\\n"

# Set default
if [[ -z ${TP_DOMAIN} ]]; then
    echo 'No domain set, defaulting to theme-park.dev'
    TP_DOMAIN='theme-park.dev'
fi
if [[ -z ${TP_SCHEME} ]]; then
    echo 'No scheme set, defaulting to https'
    TP_SCHEME='https'
fi

THEME_TYPE='theme-options'
if [ "${TP_COMMUNITY_THEME}" = true ]; then
    THEME_TYPE='community-theme-options'
fi

case ${TP_DOMAIN} in
  *"github.io"*)
  echo "Switching to github.io URL style"
    TP_DOMAIN="${TP_DOMAIN}\/theme.park"
    ;;
esac

if [[ -z ${TP_THEME} ]]; then
    echo 'No theme set, defaulting to organizr'
    TP_THEME='organizr'
fi

# Downloading fresh webui files from source.
if [[ ! -d /themepark ]]; then
    echo '---------------------------------------'
    echo '| Downloading WebUI files from github |'
    echo '---------------------------------------'
    printf '\nDownloading qBittorrent to /temp\n'
    echo 'Downloading WebUI for version:' "${QBITTORRENT_VERSION}"
    git clone --depth 1 -b release-${QBITTORRENT_VERSION} https://github.com/qbittorrent/qBittorrent /temp

    printf '\nDownload finished\n\n'
    cp -a /temp/src/webui/www /themepark
    cp -a /temp/src/icons/. /themepark/public/icons
    cp -a /temp/src/icons/. /themepark/private/icons
    printf '\nCopy finished\n\n'
    rm -rf /temp
    rm -rf /tmp/*
    printf '\nCleanup finished\n\n'
fi

sed_file(){
    sed -i "s/<\/body>/<link rel='stylesheet' href='${TP_SCHEME}:\/\/${TP_DOMAIN}\/css\/base\/qbittorrent\/qbittorrent-base.css'><\/body> /g" $1
    sed -i "s/<\/body>/<link rel='stylesheet' href='${TP_SCHEME}:\/\/${TP_DOMAIN}\/css\/${THEME_TYPE}\/${TP_THEME}.css'><\/body> /g" $1
    printf 'Stylesheet set to %s on %s\n\n' "${TP_THEME}" "$1"
}

clean_file() {
    perl -i -pe 's/QBT_TR?\(//g' "$1"
    perl -i -pe 's/\)QBT_TR\[CONTEXT=.*?\]//g' "$1"
}

if ! grep -q "${TP_DOMAIN}/css/base" /themepark/public/index.html; then
    # Adding stylesheets
    echo '---------------------------------------'
    echo '| Adding the stylesheet to html files |'
    echo '---------------------------------------'
    sed_file /themepark/public/index.html
    clean_file /themepark/public/index.html

    find /themepark/private -type f -iname "*.html" | while read fname
    do
        sed_file $fname
    done
fi

# Clean all files
echo '------------------------------------------------------------'
echo '| Cleaning files in /themepark for any translation text... |'
echo '------------------------------------------------------------'
find /themepark -type f \( ! -iname "*.svg" \) | while read fname
do
    clean_file $fname
done

if ! grep -q "WebUI\\\RootFolder" "${APP_FILEPATH}"; then
    echo '--------------------------------------'
    echo '| Adding WebUI\RootFolder=/themepark |'
    echo '--------------------------------------'
    sed -i -e '$aWebUI\\RootFolder=/themepark' "${APP_FILEPATH}";
fi

if ! grep -q "WebUI\\\AlternativeUIEnabled" "${APP_FILEPATH}"; then
    echo '------------------------------------------'
    echo '| Adding WebUI\AlternativeUIEnabled=true |'
    echo '------------------------------------------'
    sed -i -e '$aWebUI\\AlternativeUIEnabled=true' "${APP_FILEPATH}";
fi

if  ! grep -q "WebUI\\\RootFolder=/themepark" "${APP_FILEPATH}" || ! grep -q "WebUI\\\AlternativeUIEnabled=true" "${APP_FILEPATH}"; then
    echo '-------------------------------------------------------'
    echo '| Updating RootFolder and AlternativeUIEnabled values |'
    echo '-------------------------------------------------------'
    sed -i "s/WebUI\\\AlternativeUIEnabled=.*$/WebUI\\\AlternativeUIEnabled=true/g" "${APP_FILEPATH}";
    sed -i "s/WebUI\\\RootFolder=.*$/WebUI\\\RootFolder=\/themepark/g" "${APP_FILEPATH}";
fi