import { describe, expect, it } from "vitest";
import {
  ROM_COA_KNIGHT_ROGUE_GODS_SWORD_ID,
  ROM_COA_KNIGHT_ROGUE_GODS_SWORD_OFFHAND_DPS_COEFFICIENT,
  romCoaKnightRogueGodsSwordBonusLightDamage,
  type RomCoaKnightRogueGodsSwordInput,
} from "./romKnightGodsSwordCoaMechanics";

const eligibleInput: RomCoaKnightRogueGodsSwordInput = {
  classId: "rom-knight",
  secondaryClassId: "rom-rogue",
  learnedPassiveSpellIds: [ROM_COA_KNIGHT_ROGUE_GODS_SWORD_ID],
  landedOffensivePhysicalAbilityDamageEvent: true,
  offhandWeaponDps: 100,
};

describe("current CoA Knight/Rogue God's Sword passive", () => {
  it("adds 350% of offhand weapon DPS as separate Light damage", () => {
    expect(ROM_COA_KNIGHT_ROGUE_GODS_SWORD_OFFHAND_DPS_COEFFICIENT).toBe(3.5);
    expect(romCoaKnightRogueGodsSwordBonusLightDamage(eligibleInput)).toBe(350);
    expect(romCoaKnightRogueGodsSwordBonusLightDamage({
      ...eligibleInput,
      offhandWeaponDps: 12.5,
    })).toBe(43.75);
  });

  it("requires the Knight/Rogue pairing and learned passive", () => {
    expect(romCoaKnightRogueGodsSwordBonusLightDamage({
      ...eligibleInput,
      classId: "rom-warrior",
    })).toBe(0);
    expect(romCoaKnightRogueGodsSwordBonusLightDamage({
      ...eligibleInput,
      secondaryClassId: "rom-warrior",
    })).toBe(0);
    expect(romCoaKnightRogueGodsSwordBonusLightDamage({
      ...eligibleInput,
      learnedPassiveSpellIds: [],
    })).toBe(0);
    expect(romCoaKnightRogueGodsSwordBonusLightDamage({
      ...eligibleInput,
      learnedPassiveSpellIds: [491_620],
    })).toBe(0);
  });

  it("requires a landed offensive physical-ability damage event", () => {
    expect(romCoaKnightRogueGodsSwordBonusLightDamage({
      ...eligibleInput,
      landedOffensivePhysicalAbilityDamageEvent: false,
    })).toBe(0);
  });

  it("requires positive finite offhand DPS and returns only finite damage", () => {
    for (const offhandWeaponDps of [0, -1, Number.NaN, Number.POSITIVE_INFINITY, Number.NEGATIVE_INFINITY]) {
      expect(romCoaKnightRogueGodsSwordBonusLightDamage({
        ...eligibleInput,
        offhandWeaponDps,
      })).toBe(0);
    }

    expect(romCoaKnightRogueGodsSwordBonusLightDamage({
      ...eligibleInput,
      offhandWeaponDps: Number.MAX_VALUE,
    })).toBe(0);
  });
});