import { content } from "@deadhead/content";
import { describe, expect, it } from "vitest";
import { deliveryXp, pilotLevel, skillPointsAvailable } from "../src/index";

const config = content.config;

describe("delivery XP", () => {
  it("grants more XP for a longer delivery", () => {
    expect(deliveryXp(150, 0, config)).toBeGreaterThan(deliveryXp(0.4, 0, config));
  });

  it("grants more XP for a higher cargo tier", () => {
    expect(deliveryXp(50, 3, config)).toBeGreaterThan(deliveryXp(50, 0, config));
  });

  it("matches a hand calculation", () => {
    // base 10 + 0.2 × 100 + 5 × 2.
    expect(deliveryXp(100, 2, config)).toBe(40);
  });
});

describe("pilot level", () => {
  it("starts at level 0", () => {
    expect(pilotLevel(0, config)).toBe(0);
  });

  it("goes up by exactly one when crossing each threshold", () => {
    config.pilotLevelXpThresholds.forEach((threshold, i) => {
      expect(pilotLevel(threshold - 1, config)).toBe(i);
      expect(pilotLevel(threshold, config)).toBe(i + 1);
    });
  });
});

describe("skill points", () => {
  it("gives points per level minus points spent", () => {
    expect(skillPointsAvailable(3, 2, config)).toBe(3 * config.skillPointsPerLevel - 2);
  });

  it("never goes negative", () => {
    expect(skillPointsAvailable(0, 5, config)).toBe(0);
    expect(skillPointsAvailable(1, 100, config)).toBe(0);
  });
});