import { describe, expect, it } from "vitest";
import type { TimedCombatEffect } from "./combatStore";
import {
  formatTimedEffectTimer,
  timedEffectExpiresAt,
  timedEffectRemainingMs,
} from "./timedEffectDisplay";

function effect(overrides: Partial<TimedCombatEffect> = {}): TimedCombatEffect {
  return {
    id: "priest-shadow-word-pain:1",
    kind: "dot",
    sourceAbilityId: "priest-shadow-word-pain",
    sourceActorId: "__player__",
    targetId: "mob-1",
    coefficient: 0.28,
    remainingTicks: 6,
    intervalMs: 3_000,
    nextTickAt: 4_000,
    ...overrides,
  };
}

describe("timed effect display", () => {
  it("keeps a stable expiry as periodic ticks are consumed", () => {
    const initial = effect();
    const afterTick = effect({ remainingTicks: 5, nextTickAt: 7_000 });

    expect(timedEffectExpiresAt(initial)).toBe(19_000);
    expect(timedEffectExpiresAt(afterTick)).toBe(19_000);
    expect(timedEffectRemainingMs(afterTick, 7_500)).toBe(11_500);
  });

  it("formats compact countdown labels", () => {
    expect(formatTimedEffectTimer(65_001)).toBe("1:06");
    expect(formatTimedEffectTimer(10_001)).toBe("11");
    expect(formatTimedEffectTimer(9_940)).toBe("9.9");
    expect(formatTimedEffectTimer(-50)).toBe("0.0");
  });
});