import std/[strscans, strformat, strutils]

type
    Reveal = tuple[red: int, green: int, blue: int]
    Game = object
        number: int
        reveals: seq[Reveal]
        max_red, max_green, max_blue: int

var games: seq[Game]

for line in readFile("input_02.txt").splitLines:
    if line.strip.len == 0:
        continue

    var gameNum: int
    var gamespec = line.strip.split(":", 1)
    if not scanf(gamespec[0], "Game $i", gameNum):
        echo "invalid line. Game number prefix mising."

    var game = Game(number: gameNum)

    for revealspec in gamespec[1].split(";"):
        var reveal: Reveal
        for dice in revealspec.strip.split(","):
            var spec = dice.strip.split(" ", 1)
            case spec[1].strip:
                of "red":
                    reveal.red = parseInt(spec[0])
                    game.max_red = max(game.max_red, reveal.red)
                of "green":
                    reveal.green = parseInt(spec[0])
                    game.max_green = max(game.max_green, reveal.green)
                of "blue":
                    reveal.blue = parseInt(spec[0])
                    game.max_blue = max(game.max_blue, reveal.blue)
        game.reveals.add(reveal)

    games.add(game)

var result = 0

for game in games:
    result += game.max_red * game.max_green * game.max_blue


echo &"Result: {result}"