#!/bin/bash

# to make the script fail safely

set -euo pipefail

out=${1:-output}

echo "" > $out

echo "Below is the feedback and provisional marks for your submission" >> $out

echo "for assignment 8 Part 1.  Please note all marks are provisional until" >> $out

echo "ratified by the assessment board -- this is not an official" >> $out

echo "results transcript." >> $out

echo "" >> $out

# marks for CW8 part 1

marks=$(( 0 ))

# compilation tests (used to be 30 secs)

function scala_compile {

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

}

# 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)

}

# knights1: purity test

echo "knight1.scala does not contain vars, returns, Arrays, ListBuffers etc?" | tee -a $out

if (scala_vars knight1.scala)

then

  echo "  --> fail" | tee -a $out

  tsts0=$(( 1 ))

else

  echo "  --> success" | tee -a $out

  tsts0=$(( 0 )) 

fi

# compilation test

if [ $tsts0 -eq 0 ]

then    

  echo "knight1.scala runs?" | tee -a $out

  if (scala_compile knight1.scala)

  then

    echo "  --> success " | tee -a $out

    tsts1=$(( 0 ))

  else

    echo "  --> scala did not run knight1.scala" | tee -a $out

    tsts1=$(( 1 )) 

  fi

else

  tsts1=$(( 1 ))   

fi

### knight1 test

if [ $tsts1 -eq 0 ]

then

    echo " is_legal(8, Nil, (3, 4)) == true " | tee -a $out

    echo " is_legal(8, List((4, 1), (1, 0)), (4, 1)) == false " | tee -a $out

    echo " is_legal(2, Nil, (0, 0)) == true" | tee -a $out                          

    if (scala_assert "knight1.scala" "knight1_test1.scala")

    then

        echo "  --> success" | tee -a $out

	marks=$(( marks + 1 ))

    else

        echo "  --> test failed" | tee -a $out

    fi

fi

### knight2 test

if [ $tsts1 -eq 0 ]

then

  echo " legal_moves(8, Nil, (2,2)) == List((3,4), (4,3), (4,1), (3,0), (1,0), (0,1), (0,3), (1,4))" | tee -a $out

  echo " legal_moves(8, Nil, (7,7)) == List((6,5), (5,6))" | tee -a $out

  echo " legal_moves(8, List((4,1), (1,0)), (2,2)) == List((3,4), (4,3), (3,0), (0,1), (0,3), (1,4))" | tee -a $out

  echo " legal_moves(8, List((6,6)), (7,7)) == List((6,5), (5,6))" | tee -a $out

  echo " legal_moves(1, Nil, (0,0)) == Nil" | tee -a $out

  echo " legal_moves(2, Nil, (0,0)) == Nil" | tee -a $out

  echo " legal_moves(3, Nil, (0,0)) == List((1,2), (2,1))" | tee -a $out

  if (scala_assert "knight1.scala" "knight1_test2.scala")

  then

     echo "  --> success" | tee -a $out

     marks=$(( marks + 1 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

### knight3 test

if [ $tsts1 -eq 0 ]

then

  echo " all_tours from every position on the board" | tee -a $out

  echo " dim = 1: 1" | tee -a $out

  echo "       2: 0,0,0,0" >>  $out

  echo "       3: 0,0,0,0,0,0,0,0,0" >>  $out

  echo "       4: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0" | tee -a $out

  echo "       5: 304,0,56,0,304,0,56,0,56,0,56,0,64,0,56,0,56,0,56,0,304,0,56,0,304" | tee -a $out

  if (scala_assert "knight1.scala" "knight1_test3a.scala") 

  then

     echo "  --> success" | tee -a $out

     marks=$(( marks + 1 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

if [ $tsts1 -eq 0 ]

then

  echo " enum_tours(5, List((0,2)) ) => 56 tours? and all correct?" | tee -a $out

  if (scala_assert "knight1.scala" "knight1_test3b.scala") 

  then

     echo "  --> success" | tee -a $out

     marks=$(( marks + 1 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

### knight2a test

if [ $tsts1 -eq 0 ]

then

  echo " val f = (x:(Int, Int)) => if (x._1 > 3) Some(List(x)) else None " | tee -a $out

  echo "   first(List((1,0),(2,0),(3,0),(4,0)), f) == Some(List((4,0)))" | tee -a $out

  echo "   first(List((1,0),(2,0),(3,0)), f) == None" | tee -a $out

  if (scala_assert "knight1.scala" "knight1_test4.scala") 

  then

    echo "  --> success" | tee -a $out

    marks=$(( marks + 1 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

### knight2b test

if [ $tsts1 -eq 0 ]

then

  echo " is first_tour(8, List((0, 0))) ok? " | tee -a $out

  echo " is first_tour(4, List((0, 0))) == None " | tee -a $out

  if (scala_assert "knight1.scala" "knight5_test.scala") 

  then

     echo "  --> success" | tee -a $out

     marks=$(( marks + 2 ))

  else

    echo "  --> test failed" | tee -a $out

  fi

fi

## final marks

echo "Overall mark for Part 1" | tee -a $out

echo "$marks" | tee -a $out