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import fs from "fs";
const input = fs.readFileSync("./input.txt").toString();
const COLORS = ["red", "green", "blue"] as const;
type Color = (typeof COLORS)[number];
type Draw = Record<Color, number>;
interface Game {
id: number;
draws: Draw[];
}
function isPossible(
game: Game,
maxDraw: Draw = { red: 12, green: 13, blue: 14 },
) {
return game.draws.reduce((acc, draw) => {
return (
acc &&
COLORS.every((color) => {
return draw[color] <= maxDraw[color];
})
);
}, true);
}
function getMinimalPossibleDraw(draws: Draw[]) {
return COLORS.reduce(
(acc, color) => {
acc[color] = draws.reduce((max, draw) => {
return Math.max(draw[color], max);
}, 0);
return acc;
},
{ red: 0, green: 0, blue: 0 },
);
}
function power(draw: Draw) {
return Object.values(draw).reduce((product, value) => product * value, 1);
}
const result = input
.split("\n")
.slice(0, -1)
.map((line) => {
const [gameStr, drawsStr] = line.split(": ");
const id = Number(gameStr.slice("Game ".length));
const draws = drawsStr.split("; ").map((record) => {
const draws = record.split(", ").reduce(
(acc, draw) => {
const [number, color] = draw.split(" ");
acc[color] = Number(number);
return acc;
},
{ red: 0, green: 0, blue: 0 },
);
return draws;
});
return { id, draws };
})
.map((game) => getMinimalPossibleDraw(game.draws))
.reduce((acc, draw) => acc + power(draw), 0);
console.log({ result });
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