#!/usr/bin/env bash

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# This is a mock "Hive" shell that validates whether various test imports
# succeeded. It accepts commands of the form 'hive -f scriptname'
# and validates that the script contents match those of an expected script.
# The filename to that expected script is set via the environment variable
# EXPECTED_SCRIPT.

# The script will contain a pathname as part of the LOAD DATA INPATH statement;
# depending on where you run the tests from, this can change. So the expected
# script file actually contains the marker string "BASEPATH" which is replaced
# by this script with the contents of $TMPDIR, which is set to 'test.build.data'.

if [ -z "$EXPECTED_SCRIPT" ]; then
  echo "No expected script set"
  exit 1
elif [ -z "$TMPDIR" ]; then
  TMPDIR=/tmp
elif [ "$1" != "-f" ]; then
  echo "Misunderstood argument: $1"
  echo "Expected '-f'."
  exit 1
elif [ -z "$2" ]; then
  echo "Expected: hive -f filename"
  exit 1
else
  GENERATED_SCRIPT=$2
fi

# Normalize this to an absolute path
TMPDIR=`cd $TMPDIR && pwd`

# Copy the expected script into the tmpdir and replace the marker.
cp "$EXPECTED_SCRIPT" "$TMPDIR"
SCRIPT_BASE=`basename $EXPECTED_SCRIPT`
COPIED_SCRIPT="$TMPDIR/$SCRIPT_BASE"
sed -i -e "s|BASEPATH|$TMPDIR|" $COPIED_SCRIPT

# Actually check to see that the input we got matches up.
diff --ignore-all-space --ignore-blank-lines "$COPIED_SCRIPT" "$GENERATED_SCRIPT"
ret=$?

exit $ret