{-# LANGUAGE QuasiQuotes #-}

module Day10Spec (spec) where

import Control.Arrow ((>>>))
import Day10
import Test.Hspec
import Text.Heredoc

testInput :: String
testInput = [str|noop
                |addx 3
                |addx -5
                |]

testProgram :: [Instruction]
testProgram = [Noop, Addx 3, Addx (-5)]

testInput2 :: String
testInput2 = [str|addx 15
                 |addx -11
                 |addx 6
                 |addx -3
                 |addx 5
                 |addx -1
                 |addx -8
                 |addx 13
                 |addx 4
                 |noop
                 |addx -1
                 |addx 5
                 |addx -1
                 |addx 5
                 |addx -1
                 |addx 5
                 |addx -1
                 |addx 5
                 |addx -1
                 |addx -35
                 |addx 1
                 |addx 24
                 |addx -19
                 |addx 1
                 |addx 16
                 |addx -11
                 |noop
                 |noop
                 |addx 21
                 |addx -15
                 |noop
                 |noop
                 |addx -3
                 |addx 9
                 |addx 1
                 |addx -3
                 |addx 8
                 |addx 1
                 |addx 5
                 |noop
                 |noop
                 |noop
                 |noop
                 |noop
                 |addx -36
                 |noop
                 |addx 1
                 |addx 7
                 |noop
                 |noop
                 |noop
                 |addx 2
                 |addx 6
                 |noop
                 |noop
                 |noop
                 |noop
                 |noop
                 |addx 1
                 |noop
                 |noop
                 |addx 7
                 |addx 1
                 |noop
                 |addx -13
                 |addx 13
                 |addx 7
                 |noop
                 |addx 1
                 |addx -33
                 |noop
                 |noop
                 |noop
                 |addx 2
                 |noop
                 |noop
                 |noop
                 |addx 8
                 |noop
                 |addx -1
                 |addx 2
                 |addx 1
                 |noop
                 |addx 17
                 |addx -9
                 |addx 1
                 |addx 1
                 |addx -3
                 |addx 11
                 |noop
                 |noop
                 |addx 1
                 |noop
                 |addx 1
                 |noop
                 |noop
                 |addx -13
                 |addx -19
                 |addx 1
                 |addx 3
                 |addx 26
                 |addx -30
                 |addx 12
                 |addx -1
                 |addx 3
                 |addx 1
                 |noop
                 |noop
                 |noop
                 |addx -9
                 |addx 18
                 |addx 1
                 |addx 2
                 |noop
                 |noop
                 |addx 9
                 |noop
                 |noop
                 |noop
                 |addx -1
                 |addx 2
                 |addx -37
                 |addx 1
                 |addx 3
                 |noop
                 |addx 15
                 |addx -21
                 |addx 22
                 |addx -6
                 |addx 1
                 |noop
                 |addx 2
                 |addx 1
                 |noop
                 |addx -10
                 |noop
                 |noop
                 |addx 20
                 |addx 1
                 |addx 2
                 |addx 2
                 |addx -6
                 |addx -11
                 |noop
                 |noop
                 |noop
                |]

spec :: Spec
spec =
  describe "Day10" $ do
    describe "Part1" $ do
      it "parses" $ do
        parseProgram testInput `shouldBe` testProgram
      it "executes" $ do
        executeProgram testProgram `shouldBe` [1,1,1,4,4,-1]
      it "executes larger program" $ do
        let registerValues = parseProgram >>> executeProgram $ testInput2
        registerValues !! 20 `shouldBe` 21
        registerValues !! 60 `shouldBe` 19
        registerValues !! 100 `shouldBe` 18
        registerValues !! 140 `shouldBe` 21
        registerValues !! 180 `shouldBe` 16
        registerValues !! 220 `shouldBe` 18
      it "computes signal strength" $ do
        let registerValues = parseProgram >>> executeProgram $ testInput2
        signalStrength registerValues `shouldBe` 13140
      it "prints a crt" $ do
        let registerValues = parseProgram >>> executeProgram $ testInput2
        putStrLn $ draw registerValues
      it "sprites drawn" $ do
        isSpriteDrawn 1 1 `shouldBe` True
        isSpriteDrawn 1 1 `shouldBe` True