#!/bin/bash

VALCOM="valgrind -q --leak-check=full --track-origins=yes"

TOTAL_PASSES=0
TOTAL_FAILS=0
FAILS=0
FAIL_OUTPUT=""
VALGRIND=false
DISABLED=false

if [ "$1" == "-val" ]; then
    VALGRIND=true
    filter="$2"
else
    filter="$1"
fi

FIRST_TITLE=true
title() {
    if ! $FIRST_TITLE; then
        echo ""
        if (($FAILS != 0)); then
            echo -e "$FAIL_OUTPUT"
            FAIL_OUTPUT=""
        fi
        FAILS=0
        DISABLED=false
    else
        FIRST_TITLE=false
    fi
    echo -n "[$1] "
    if [[ "$2" == "disable" ]]; then
        echo -n "DISABLED"
        DISABLED=true
    fi
}

pass() {
    echo -n "✓"
    ((TOTAL_PASSES++))
}

fail() {
    echo -n "X"
    FAIL_OUTPUT="$FAIL_OUTPUT  $1 FAILED\n    When running \"$2\""
    ((FAILS++))
    ((TOTAL_FAILS++))
}


regex="regex"
check() {
    if $DISABLED || ! [[ "$1" =~ $filter ]]; then
        return 1
    fi

    if $VALGRIND; then
        echo -ne "\n   $1\r "
        local output="$($VALCOM ./pl "(loadfile \"examples/lib.pbl\") $2")"
    else
        local output="$(./pl "(loadfile \"examples/lib.pbl\") $2")"
    fi

    if [ "$output" == "$3" ]; then
        pass "$1"
    elif [ "$3" == "$regex" ] && [[ "$output" =~ $4 ]]; then
        pass "$1"
    else
        fail "$1" "$2"
        FAIL_OUTPUT="${FAIL_OUTPUT}\n    expected '$3' but received '$output'\n"
    fi
}

echo "STARTING TESTS"

title "Plain returns"
check "PlainRet" "10" "10"
check "StrRetrn" '"hey"' "hey"
check "HexReturn" "0x0f0f0" "61680"
check "BinaryReturn" "0b011010011010011" "13523"

title "Arithmetic"
check "Addition" "(+ 1093 102852)" "103945"
check "Multiply" "(*1000 10000)" "10000000"
check "Division" "(/ 6418425 65)" "98745"
check "ChainAdd" "(+ 3917 17304 1293844 400 100000)" "1415465"
check "ChainMul" "(* 8263 23 123)" "23376027"
check "ChainDiv" "(/ 1493856 741 96 7)" "3"
check "ListAddi" "(+ 5 (1 2 3 (+ 10 10)))" "( 6 7 8 25 )"
check "ListModu" "(% 5 (1 2 3 (* 11 11)))" "( 1 2 3 1 )"
check "ListsMul" "(* (10 20 30) (1 20 300))" "( 10 400 9000 )"

title "Comparison"
check "GratrThn" "(> 23847123 19375933)" "T"
check "LessThan" "(< 23847123 19375933)" "F"
check "Equality" "(= 987654321 987654321 )" "T"
check "StringEquality" '(= "Bean" "Bean" )' "T"
check "StringInequality" '(= "Beans" "Bean" )' "F"
check "NullInequality" '(= "Beans" "" )' "F"

title "ComplexStrings"
check "TripleQuoting" '"""Hello"""' 'Hello'
check "TripleQuotingWithQuotes" '"""My name is "yoink"."""' 'My name is "yoink".'

title "TypeCheck"
check "IsNum" "(isnum 23847123)" "T"
check "IsntNum" '(isnum "WORDS")' "F"
check "IsString" '(isstr "words")' "T"
check "IsStringEmpty" '(isstr "")' "T"
check "NumNotString" "(isstr 5)" "F"
check "ListNotString" '(isstr ("hello"))' "F"

title "Ifs/Bools"
check "IfReturn" "(if (T) 123456789 987654321)" "123456789"
check "IfRetTwo" "(if F 123456789 987654321)" "987654321"
check "EmptyCnd" "(if () T F)" "F"
check "EtyLstLt" "(if (()) T F)" "T"

title "Lists"
check "RegLists" "(1 2 3 4 5)" "( 1 2 3 4 5 )"
check "MultiTypeList" '(10 20 "rascals")' "( 10 20 rascals )"
check "EmptyLst" "()" "( )"
check "EmptLst2" "(                     )" "( )"
check "ListIndex" "(at (+ 1 1) (1 2 1000 4 5))" "1000"
check "EvalElems" "((* 10 10) 7)" "( 100 7 )"
check "AppendToList" "(ap (1 20 300 4000 50000) 600000)" "( 1 20 300 4000 50000 600000 )"
check "AppndToEnvList" "(def l (50000 4000 300 20)) (def l (ap l 1)) l" "( 50000 4000 300 20 1 )"
check "PrependToList" "(pre (1 20 300 4000 50000) 600000)" "( 600000 1 20 300 4000 50000 )"
check "PrepndToEnvList" "(def l (50000 4000 300 20)) (def l (pre l 1)) l" "( 1 50000 4000 300 20 )"
check "Rest(Tail)OfList" "(def l (50000 4000 300 20)) (rest l)" "( 4000 300 20 )"
check "ListLength" "(def l (1 20 3 \"abc\" \"banana\" (+ 10 5))) (len l)" "6"
check "Identifying list" "(islist (1 2 3))" "T"
check "Identifying empty list" "(islist ())" "T"
check "Identifying not a list" "(islist 1)" "F"

deep_nesting="10"
for _ in {0..25}; do deep_nesting="( $deep_nesting )"; done
check "DeepNesting" "$deep_nesting" "$deep_nesting" # Above 25 it starts to stack-smash

title "Spacing"
check "DenseSpc" "(+1093 102852)" "103945"
check "WideSpac" "(     +     1093      102852       )" "103945"
check "VWidwSpc" "       (     +     1093      102852       )       " "103945"

title "DemoFunctions"
check "Squaring" "(sq 9876)" "97535376"
check "Cubing" "(cube 81)" "531441"
check "Exponent" "(exp 9 9)" "387420489"
check "MaxRight" "(max 5 20)" "20"
check "MaxLeft" "(max 135890 98372)" "135890"
check "MinRight" "(min 8429 192449)" "8429"
check "MinLeft" "(min 17294722 17294721)" "17294721"

title "Lambdas"
check "MultStmt" "(def yee (fn (a) (* 10 a))) ; (yee 5)" "50"
check "DefinMap" "(def yee (fn (a) (* 10 a))) ; (map yee (5 10 2 (+ 12 0)))" "( 50 100 20 120 )"
check "AnonymousLambda" "\
  (map (fn (a) (* a a)) (5 6 7))" "( 25 36 49 )"
check "FbnciSeq" "\
  (def fib (fn (a) \
    (if (< a 2) \
      a \
      (+ (fib (- a 1)) (fib (- a 2))) \
  )));\
  (fib 11)" "89"
check "Factorial" "\
  (def fac (fn (a) \
    (if (= a 1) \
      1 \
      (* a (fac (- a 1)) ) \
  )));\
  (fac 11)" "39916800"
check "LambdaClone" "(def y (fn (a) (* 10 a))) (def b y) (def y 12345) ((b 5) y)" "( 50 12345 )"
check "Duplicate" "(def dupe (fn (a) (() (a a a))));(dupe (*10 10))" "( 100 100 100 )"

title "Cat"
check "ExplicitCat" '(cat "Big" " Kitty")' "Big Kitty"
check "CatNums" '(cat "There are " (+ 2 3) " kitties")' "There are 5 kitties"
check "ImplicitCat" '(+ "There are " (* 5 4) " bonks")' "There are 20 bonks"
# Mixing of `+` and implicit cat currently expected but not recommended:
check "CatAssocLeft" '(+ 10 20 " rascals")' "30 rascals"

title "Filtering"
check "Filtering" "(fil (< 321) (30 300 90 1200 135 801))" "( 1200 801 )"
check "FilterEval" "(fil (= 1000) ((+ 450 550) (* 20 50) (/ 30 3) (- 10000 100)))" "( 1000 1000 )"
check "MapFilter" "(fil (< 50) (map sq (1 2 3 4 5 6 7 8 9 10 11 12)))" "( 64 81 100 121 144 )"

title "Structs"
check "StructDef" "(struct Post (title body))" "T"
check "Building a struct"\
    '(struct Post (title body)) (Post "A title" "The Body")'\
    '{ title: "A title", body: "The Body" }'
check "Accessing struct fields"\
    "(struct Post (title body)) (def p (Post \"TITLE\" \"BODY\")) (p's title p's body)"\
    "( TITLE BODY )"

title "HigherOrder"
check "Simple reducing" '(reduce ((1 2 3) 0) +)' '6'
check "NonListReducing" '(reduce (1 0) +)' '1'
check "FuncReturningAFunc" "(def plusser (fn (outer) (fn (inner) (+ outer inner))))\
    (def plusFive (plusser 5))\
    (plusFive 10)" "15"

title "ShouldError"
check "LenOfNotList" "(len 5)" "NOT_A_LIST"
check "NoMapList" "(map sq)" "( )"
check "UnevenLists" "(+ (1 2) (1 2 3))" "LISTS_NOT_SAME_SIZE"
check "BadNumber" "(5df)" "BAD_NUMBER"
check "BadHex" "(0x0zf)" "BAD_NUMBER"
check "BadBinary" "(0b01120)" "BAD_NUMBER"
check "BadParens1" "(hey()" regex "'MISMATCHED_PARENS.*"
check "BadParens2" "(hey)(" regex "'MISMATCHED_PARENS.*"
check "BadParens3" "((hey(" regex "'MISMATCHED_PARENS.*"
check "BadParens4" ")))hey" regex "'MISMATCHED_PARENS.*"
check "BadParens5" "hey))(" regex "'MISMATCHED_PARENS.*"
check "BadParens6" '(ey")"' regex "'MISMATCHED_PARENS.*"

title "Eval"
check "BasicNumberEval" '(eval "5")' "5"
check "BasicOpEval" '(eval "(+ 5 10)")' "15"
check "MapFilter" '(eval "(fil (< 50) (map sq (1 2 3 4 5 6 7 8 9 10 11 12)))")' "( 64 81 100 121 144 )"

title "Forbble" disable
check "BasicForbbleOp" '(loadfile "examples/forbble.pbl") (feval (10 10 * .)) ""' "100"
check "FibForbble" '(loadfile "examples/forbble.pbl") (feval (1 1 _f _f _f _f _f _f _f _f _f _f _f _f _f _f _f _f _f _f _f _f _f .)) ""' "28657"
check "ForbbleDefine" '(loadfile "examples/forbble.pbl") (feval ( : "cubed" dup dup * * $ )) (feval (4 cubed .)) ""' "64"

title "Environment"
check "EnvStressTestEarly" '(def a 1)(def b 20)(def c "yee")(def d "yeehunnid")(def e 3) (a)' "( 1 )"
check "EnvStressTestLate" "(def a 1)(def b 2)(def c 3)(def d 4)(def e 5)(def g 6)(def n 40) n" "40"
hard_test_string="(def n 1000)"
for c in {0..200}; do hard_test_string="(def a$c 1)$hard_test_string"; done
check "HardEnvStressTest" "$hard_test_string n" "1000"

echo ""

if [ "$TOTAL_FAILS" -ne "0" ]; then
    echo -n ""
fi
echo "$TOTAL_FAILS Tests Failed"

if [ "$TOTAL_PASSES" -ne "0" ]; then
    echo -n ""
fi
echo "$TOTAL_PASSES Tests Passed"

echo ""