import { describe, it, expect } from "vitest";
import { parseLineToPlayer, parseCsv } from "./csv.js";

describe("parseLineToPlayer", () => {
  it("parses id, name, and level columns", () => {
    const player = parseLineToPlayer("3, Jane, Doe, 7");
    expect(player.id).toBe(3);
    expect(player.firstName).toBe("Jane");
    expect(player.lastName).toBe("Doe");
    expect(player.level).toBe(7);
    expect(player.games).toBe(0);
  });
});

describe("parseCsv", () => {
  it("skips the header row and blank lines", () => {
    const csv = "id,firstName,lastName,level\n0, Jane, Doe, 7\n\n1, John, Smith, 3\n";
    const players = parseCsv(csv);
    expect(players).toHaveLength(2);
    expect(players[0].firstName).toBe("Jane");
    expect(players[1].firstName).toBe("John");
  });

  it("returns an empty array when there's only a header", () => {
    expect(parseCsv("id,firstName,lastName,level")).toEqual([]);
  });
});