const sample = await Deno.readTextFile("sample.txt");
const input = await Deno.readTextFile("input.txt");

const solvePart1 = (data: string): number =>
  data
    .split("\n")
    .filter(Boolean)
    .map((line) =>
      line
        .split(",")
        .map((section) =>
          section.split("-").map((value) => parseInt(value, 10))
        )
    )
    .filter(
      ([section1, section2]) =>
        (section1[0] <= section2[0] && section1[1] >= section2[1]) ||
        (section2[0] <= section1[0] && section2[1] >= section1[1])
    ).length;

console.log("Sample:", solvePart1(sample));
console.log("Input", solvePart1(input));

const solvePart2 = (data: string): number =>
  data
    .split("\n")
    .filter(Boolean)
    .map((line) =>
      line
        .split(",")
        .map((section) =>
          section.split("-").map((value) => parseInt(value, 10))
        )
    )
    .filter(
      ([section1, section2]) =>
        (section1[0] <= section2[1] && section1[1] >= section2[0]) ||
        (section2[0] <= section1[1] && section2[1] >= section1[0])
    ).length;

console.log("Sample:", solvePart2(sample));
console.log("Input", solvePart2(input));