#!/bin/bash

set -e

file_env() {
   local var="$1"
   local fileVar="${var}_FILE"
   local def="${2:-}"

   if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
      echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
      exit 1
   fi

   local val="$def"

   if [ "${!var:-}" ]; then
      val="${!var}"
   elif [ "${!fileVar:-}" ]; then
      val="$(< "${!fileVar}")"
   fi

   export "$var"="$val"
   unset "$fileVar"
}

if [ ! -f "/books/metadata.db" ]; then
   /usr/bin/mkdir -p /books
   /usr/bin/calibredb restore_database --really-do-it --with-library /books
   /usr/bin/chown abc:abc /books/metadata.db
   /usr/bin/chmod a+rw /books/metadata.db
else
   echo "/books/metadata.db exists, not creating another one"
fi

# https://github.com/janeczku/calibre-web/issues/2299
echo "removing scholarly"
apt-get install -y python3-distutils
/usr/local/bin/pip3 uninstall -y scholarly

echo "ensuring permissions are set correctly on metadata parent directory"
/usr/bin/chmod a+rw /books

echo "entrypoint done"