#!/bin/bash

scriptDir=`dirname $0`
server="http://www.irs.uji.es/uwsim/files"
force="-k"
metaScene=false
clean=false

while [[ $# > 0	 ]]
do
  key="$1"

  case $key in
    -f|--force)
    force="--overwrite"
    ;;

    -s|--scene)
    metaScene=true
    ;;

    -c|--clean)
    clean=true
    ;;

    *)
    filename=$1        # unknown option
    ;;
  esac
shift # past argument or value
done

if [ "$metaScene" = true ]
then
  wget $server/scenes/metaScenes/$filename -O ./scene.uws
  filename="./scene.uws"
else
  if [ ! -f $filename ]
  then
    echo "Can't find $filename file"
    exit
  fi
fi
	
if [ ! -f $scriptDir/UWSimScene.dtd ]
then
  echo "Directory where installScene is doesn't seem a UWSim scenes folder (UWSimScene.dtd does not exist)."
  exit
fi

if [ -d $HOME/.uwsim/data ]
then
  echo "Installing..."	
  while read -r line
  do
    words=( $line )
    location="${words[1]/#\~/$HOME}"  #This expands "~" safely.
    if [[ "$location" = /* ]]  ##Checks if it is an absolute path (we consider relative paths to be in the scriptDir)
    then
      wget $server/scenes/${words[0]} -O ~/.uwsim/downloaded_scene_data.tgz && tar -zxf ~/.uwsim/downloaded_scene_data.tgz $force -C $location
    else
      wget $server/scenes/${words[0]} -O ~/.uwsim/downloaded_scene_data.tgz && tar -zxf ~/.uwsim/downloaded_scene_data.tgz $force -C $scriptDir/$location
    fi
    rm ~/.uwsim/downloaded_scene_data.tgz
  done < "$filename"

else
  echo "Data directory doesn't exist. Run UWSim for the first time to download basic scene data."
  exit 
fi

if [ "$metaScene" = true ] || [ "$clean" = true ]
then
  rm "$filename"
fi