#!/bin/bash
script_name=`basename $0`
script_dir=`dirname $0`
tmp_dir=/tmp/nupyf-tests

function print_usage {
  echo ""
  echo "Usage:"
  echo "  $script_name [-h] [-f] [-i <input_dir>] [-a <acl_file>] <testcase> <testname>"
  echo ""
  echo "Options:"
  echo "  -h : Prints this help."
  echo "  -i <input_dir> : Directory where taking expects files to add (by default $tmp_dir)."
  echo "  -a <acl_file> : File containing the ACLs used for this test (if not given, use the already existing file if it exits)."
  echo "  -f : force test overwriting if the acl file or expect directory already exist."
  echo ""
  echo "Arguments:"
  echo "  <testcase> : a testcase is a subdirectory included in the $script_dir. This subdirectory must have been created manually and contain a desc.xml file."
  echo "  <testname> : the base of the name of the test to add. By example, 'foo' will give an 'acls_foo.xml' ACL file and a 'expect_foo/' subdirectory."
} 

input_dir=
acl_file=
force=1
while getopts "hfi:a:" flag
do
  case "$flag" in
    'h') print_usage; exit 0;;
    'f') force=0;;
    'i') input_dir=$OPTARG;;
    'a') acl_file=$OPTARG;;
    '?') echo "Bad option: $flag"; print_usage; exit 1;;
  esac
done
shift $(($OPTIND-1))

if [ $# != 2 ]
then
  echo "Wrong number of arguments, see usage..."
  print_usage
  exit 2
else
  testcase=$1
  testname=$2
fi
output_acl="$script_dir/$testcase/acls_$testname.xml"
output_expect="$script_dir/$testcase/expect_$testname"

# Checking -i option
if [ "$input_dir" ]
then
  if [ ! -d "$input_dir" ]
  then
    echo "Bad -i option: must be a directory containing the results of a nupyf process."
    print_usage
    exit 3
  fi
else
  if [ ! -d "$tmp_dir" ]
  then
    echo "-i option is not given, but $tmp_dir does not exist."
    print_usage
    exit 3
  fi
  input_dir=$tmp_dir
fi

# Checking <testcase> argument
if [ ! -d "$script_dir/$testcase" ]
then
  echo "Bad <testcase> argument: '$testcase' ; must be a subdirectory of '$script_dir'."
  print_usage
  exit 3
fi
if [ ! -e "$script_dir/$testcase/desc.xml" ]
then
  echo "The file '$script_dir/$testcase/desc.xml' is expected to be a valid testcase."
  print_usage
  exit 3
fi

# Checking ACL file existence
if [ $force = 1 -a -e $output_acl -a "$acl_file" ]
then
  echo "The resulting ACL file already exists: $output_acl; maybe should you use the -f option."
  print_usage
  exit 3
fi

# Checking -a option
if [ "$acl_file" ]
then
  if [ ! -f $acl_file ]
  then
    echo "-a option: file not found: $acl_file."
    print_usage
    exit 3
  fi
else
  if [ ! -f $output_acl ]
  then
    echo "-a option not given: the file '$output_acl' must exist."
    print_usage
    exit 3
  fi
  acl_file=$output_acl
fi

# Checking expected result directory existence (must be the last check)
if [ -e $output_expect ]
then
  if [ $force = 1 ]
  then
    echo "The resulting expect_dir already exists: $output_expect; maybe should you use the -f option."
    print_usage
    exit 3
  fi
  rm -rf $output_expect
fi

# Copying ACL file
cp $acl_file $output_acl.new
mv -f $output_acl.new $output_acl

# Copying expected result
mkdir $output_expect
cp -v $input_dir/* $output_expect/

echo Done.