#!/bin/bash

# to make the script fail safely

set -euo pipefail

out=${1:-output}

echo "" > $out

echo -e "Below is the feedback for your submission for the advanced part of danube.scala" >> $out

echo -e "" >> $out

# compilation tests

function scala_compile {

}

# functional tests

function scala_assert {

}

# purity test

function scala_vars {

   (egrep '\bvar\b|\breturn\b|\.par|ListBuffer|mutable|new Array' "$1" 2> /dev/null 1> /dev/null)

}

# var, .par return, ListBuffer test

#

echo "danube.scala does not contain vars, returns etc?" >> $out

if (scala_vars danube.scala)

then

  echo -e "  --> fail (make triple-sure your program conforms to the required format)" >> $out

  tsts0=$(( 0 ))

else

  echo -e "  --> success" >> $out

  tsts0=$(( 0 )) 

fi

### compilation test

if  [ $tsts0 -eq 0 ]

then 

  echo "danube.scala runs?" >> $out

  if (scala_compile danube.scala)

  then

    echo -e "  --> success" >> $out

    tsts=$(( 0 ))

  else

    echo -e "  --> SCALA DID NOT RUN DANUBE.SCALA\n" >> $out  

    tsts=$(( 1 )) 

  fi

else

  tsts=$(( 1 ))     

fi

### danube groupById test

if [ $tsts -eq 0 ]

then

  echo "  val ls = List((\"1\", \"a\"), (\"2\", \"a\"), (\"1\", \"c\"), (\"2\", \"a\"), (\"1\", \"c\"))" >> $out

  echo "  groupById(ls, Map()) == Map(1 -> List(c, c, a), 2 -> List(a, a))" >> $out

  echo "      where the order in the lists is unimportant" >> $out

  if (scala_assert "danube.scala" "danube_test3.scala")

  then

      echo -e "  --> success" >> $out

  else

      echo -e "  --> \n ONE TEST FAILED\n" >> $out  

  fi

fi

### danube processing tests

#if [ $tsts -eq 0 ]

#then

#  echo "  val good_ratings = process_ratings(ratings)" >> $out

#  echo "  val movie_names = process_movies(movies)" >> $out  

#  echo "  " >> $out

#  echo "  good_ratings.length == 48580 " >> $out

#  echo "  movie_names.length == 9742 " >> $out

#

#  if (scala_assert "danube.scala" "danube_test2.scala") 

#  then

#    echo "  --> success" >> $out

#  else

#    echo "  --> one of the tests failed" >> $out

#  fi

#fi

echo -e "\nFor other testcases please look at the template file." >> $out