import { promises as fsPromises } from "node:fs";

async function asyncReadFile(filename) {
    try {
        const contents = await fsPromises.readFile(filename, "utf-8");

        const arr = contents.split(/\r?\n/);

        return arr;
    } catch (err) {
        console.error(err);
    }
}

const parseData = (rows) => {
    let isInRanges = true;
    let freshRanges = [];
    let freshCount = 0;

    rows.forEach((row) => {
        if (isInRanges) {
            if (row === "") {
                isInRanges = false;
                return;
            }

            if (row.includes("-")) {
                freshRanges.push(row);
                /*
                const [start, end] = row.split("-").map((val) => val * 1);
                for (let i = start; i <= end; i++) {
                    if (!freshIngredients.includes(i)) freshIngredients.push(i);
                }
                */
                return;
            }

            if (/^\d+$/.matches(row) && !freshIngredients.includes(row * 1)) {
                // freshIngredients.push(row * 1);
                freshRanges.push(row);
                return;
            }
            return;
        }

        let iNum = row * 1;
        let isFresh = freshRanges.some((range) => {
            if (!range.includes("-")) return range === `${iNum}`;
            const [start, end] = range.split(/-/).map((val) => val * 1);
            // console.log({ range, iNum, start, end });
            return iNum >= start && iNum <= end;
        });

        if (isFresh) freshCount++;

        console.log(`Ingredient ${row} is ${isFresh ? "fresh" : "spoiled"}.`);
    });

    return freshCount;
};

const testData = `
3-5
10-14
16-20
12-18

1
5
8
11
17
32
`.trim();

// const rows = testData.split("\n");

const rows = await asyncReadFile("../input.txt");

console.log(`Fresh ingredient count: ${parseData(rows)}`);