import { describe, expect, it } from "vitest";
import {
  ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_DURATION_MS,
  ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_HEAL_AT_SKILL_LEVEL_105,
  ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_SPELL_ID,
  ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_SOURCE_SKILL_LEVEL,
  createRomPriestChampionBeaconState,
  resolveRomPriestChampionBeaconHeal,
} from "./romPriestChampionBeaconRuntime";

describe("current CoA Priest/Champion Beacon of Regeneration", () => {
  it("records the source-described skill, duration, and published +105 healing amount", () => {
    expect(ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_SPELL_ID).toBe(498620);
    expect(ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_DURATION_MS).toBe(30_000);
    expect(ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_SOURCE_SKILL_LEVEL).toBe(105);
    expect(ROM_PRIEST_CHAMPION_BEACON_OF_REGENERATION_HEAL_AT_SKILL_LEVEL_105).toBe(770);
  });

  it("heals the marked party member once for each caster direct-heal cast at sourced skill level 105", () => {
    const beacon = createRomPriestChampionBeaconState("priest", "ally", 1_000);

    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: 1_001,
      kind: "direct-cast",
    }, 105)).toEqual({ targetId: "ally", amount: 770 });
    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: 15_000,
      kind: "direct-cast",
    }, 105)).toEqual({ targetId: "ally", amount: 770 });
  });

  it("does not extrapolate the +105 amount to unknown or lower skill levels", () => {
    const beacon = createRomPriestChampionBeaconState("priest", "ally", 1_000);
    const event = { casterId: "priest", occurredAtMs: 2_000, kind: "direct-cast" as const };

    expect(resolveRomPriestChampionBeaconHeal(beacon, event, null)).toBeNull();
    expect(resolveRomPriestChampionBeaconHeal(beacon, event, 50)).toBeNull();
    expect(resolveRomPriestChampionBeaconHeal(beacon, event, 104)).toBeNull();
  });

  it("requires a direct-heal cast from the Beacon caster and excludes other actors, HoT ticks, and channel pulses", () => {
    const beacon = createRomPriestChampionBeaconState("priest", "ally", 1_000);

    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "companion",
      occurredAtMs: 2_000,
      kind: "direct-cast",
    }, 105)).toBeNull();
    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: 2_000,
      kind: "hot-tick",
    }, 105)).toBeNull();
    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: 2_000,
      kind: "channel-pulse",
    }, 105)).toBeNull();
  });

  it("expires at 30 seconds and ignores events before Beacon creation", () => {
    const beacon = createRomPriestChampionBeaconState("priest", "ally", 1_000);

    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: 30_999,
      kind: "direct-cast",
    }, 105)).toEqual({ targetId: "ally", amount: 770 });
    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: 31_000,
      kind: "direct-cast",
    }, 105)).toBeNull();
    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: 999,
      kind: "direct-cast",
    }, 105)).toBeNull();
  });

  it("rejects incomplete cast state and invalid event times", () => {
    expect(createRomPriestChampionBeaconState("", "ally", 0)).toBeNull();
    expect(createRomPriestChampionBeaconState("priest", " ", 0)).toBeNull();
    expect(createRomPriestChampionBeaconState("priest", "ally", Number.NaN)).toBeNull();

    const beacon = createRomPriestChampionBeaconState("priest", "ally", 0);
    expect(resolveRomPriestChampionBeaconHeal(beacon, {
      casterId: "priest",
      occurredAtMs: Number.NaN,
      kind: "direct-cast",
    }, 105)).toBeNull();
  });
});