import { describe, expect, it } from "vitest";
import type { StructuredCombatEvent } from "../game/combatEvents";
import {
  MAX_PARTY_HEAL_POPUPS,
  addedPartyHealPopups,
  appendPartyHealPopups,
} from "./partyHealPopups";

function event(
  id: number,
  kind: StructuredCombatEvent["kind"] = "healing",
  effectiveAmount = 125,
): StructuredCombatEvent {
  return {
    id,
    occurredAt: 1_000 + id,
    kind,
    sourceActorId: "healer",
    targetActorId: `party-${id}`,
    rawAmount: effectiveAmount,
    effectiveAmount,
    overheal: 0,
    absorbed: 0,
    critical: id % 2 === 0,
  };
}

describe("party-frame healing popups", () => {
  it("turns newly committed effective heals into rounded green-number events", () => {
    const previous = [event(1)];
    const next = [...previous, event(2, "damage", 80), event(3, "healing", 149.6)];
    expect(addedPartyHealPopups(previous, next, true)).toEqual([{
      key: "1003:3",
      targetActorId: "party-3",
      amount: 150,
      critical: false,
      horizontalOffset: -14,
    }]);
  });

  it("ignores old heals, pure overheal, and all healing outside combat", () => {
    const previous = [event(1)];
    const overheal = event(2, "healing", 0);
    expect(addedPartyHealPopups(previous, [...previous, overheal], true)).toEqual([]);
    expect(addedPartyHealPopups(previous, [...previous, event(3)], false)).toEqual([]);
  });

  it("deduplicates replayed keys and bounds the active burst", () => {
    const first = addedPartyHealPopups([], [event(1)], true)[0];
    const burst = Array.from({ length: MAX_PARTY_HEAL_POPUPS + 4 }, (_, index) => (
      addedPartyHealPopups([], [event(index + 2)], true)[0]
    ));
    const result = appendPartyHealPopups([first], [first, ...burst]);
    expect(result).toHaveLength(MAX_PARTY_HEAL_POPUPS);
    expect(new Set(result.map((popup) => popup.key)).size).toBe(MAX_PARTY_HEAL_POPUPS);
    expect(result.at(-1)?.key).toBe(`${1_000 + MAX_PARTY_HEAL_POPUPS + 5}:${MAX_PARTY_HEAL_POPUPS + 5}`);
  });
});