#!/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 of CW 8, Advanced Part 2." >> $out

echo -e "" >> $out

# compilation tests

function scala_compile {

  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -nc "$1" 2>> $out 1>> $out) 

}

# functional tests

function scala_assert {

  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -nc -i "$1" "$2" -e "" 2> /dev/null 1> /dev/null)

}

# purity test

function scala_vars {

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

}

# knights2: purity test

#

echo -e "knight2.scala does not contain vars, returns, Arrays, ListBuffers etc?" >> $out

if (scala_vars knight2.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 -e "knight2.scala runs?" >> $out

  if (scala_compile knight2.scala)

  then

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

    tsts1=$(( 0 ))

  else

    echo -e "  --> SCALA DID NOT RUN KNIGHT2.SCALA\n" >> $out  

    tsts1=$(( 1 )) 

  fi

else

  tsts1=$(( 1 ))     

fi

# ordered move test

if [ $tsts1 -eq 0 ]

then

  echo -e " ordered_moves(8, List((3,4), (3,2)), (1,3)) == List((0,1), (0,5), (2,1), (2,5))" >> $out

  echo -e " ordered_moves(8, List((4,0)), (0,0)) == List((2,1), (1,2))" >> $out

  echo -e " ordered_moves(8, List((0,4)), (0,0)) == List((1,2), (2,1))" >> $out

  if (scala_assert "knight2.scala" "knight_test6.scala")

  then

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

  else

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

  fi

fi

# first-closed-tour test

if [ $tsts1 -eq 0 ]

then

  echo -e " first_closed_tour_heuristic(6, List((3,3))) found and correct?" >> $out

  if (scala_assert "knight2.scala" "knight_test7.scala")

  then

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

  else

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

  fi

fi

if [ $tsts1 -eq 0 ]

then

  echo -e " first_tour_heuristic(8, List((0,0))) found and correct?" >> $out

  echo -e " first_tour_heuristic(30, List((0,0))) found and correct?" >> $out

  if (scala_assert "knight2.scala" "knight_test8.scala")

  then

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

  else

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

  fi

fi

# knights3: purity test

#

echo -e "knight3.scala does not contain vars, returns, Arrays, ListBuffers etc?" >> $out

if (scala_vars knight3.scala)

then

  echo "  --> test failed" >> $out

  tsts0=$(( 0 ))

else

  echo "  --> success" >> $out

  tsts0=$(( 0 )) 

fi

# compilation test

if  [ $tsts0 -eq 0 ]

then    

  echo "knight3.scala runs?" >> $out

  if (scala_compile knight3.scala)

  then

    echo "  --> success" >> $out

    tsts1=$(( 0 ))

  else

    echo -e "  --> SCALA DID NOT RUN KNIGHT3.SCALA\n" >> $out  

    tsts1=$(( 1 )) 

  fi

else

  tsts1=$(( 1 ))     

fi

if [ $tsts1 -eq 0 ]

then

  echo -e " tour_on_mega_board(70, List((0,0))) found and correct?" >> $out

  if (scala_assert "knight3.scala" "knight_test9.scala")

  then

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

  else

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

  fi

fi