import { describe, expect, it } from "vitest";
import { applyTalentModifierValue, talentModifiersForRanks } from "./talentModifiers";
import { wow335ShamanElementalWardingModifierForRank } from "./wow335ShamanElementalWardingRuntime";

describe("WoW Shaman Elemental Warding", () => {
  it.each([
    [1, -2],
    [2, -4],
    [3, -6],
  ])("reads the generated owner damage reduction at rank %i", (rank, amount) => {
    expect(wow335ShamanElementalWardingModifierForRank(rank)).toEqual({
      kind: "damage-taken-percent",
      amount,
      unit: "percent",
      scope: "all Fire, Frost and Nature damage taken",
    });
  });

  it("does not create owner modifiers while untrained or for invalid rank input", () => {
    expect(wow335ShamanElementalWardingModifierForRank(0)).toBeNull();
    expect(wow335ShamanElementalWardingModifierForRank(Number.NaN)).toBeNull();
  });

  it("keeps the Tethered Elemental damage and threat clauses off the Shaman", () => {
    const modifiers = talentModifiersForRanks({ "talent-1640": 2 }, "shaman");
    expect(modifiers).toHaveLength(1);
    expect(modifiers[0]).toMatchObject({
      kind: "damage-taken-percent",
      amount: -4,
      sourceTalentId: "talent-1640",
      sourceTalentName: "Elemental Warding",
      rank: 2,
    });
    expect(modifiers.some((modifier) => modifier.kind === "threat-percent")).toBe(false);
  });

  it("reduces only Fire, Frost and Nature damage", () => {
    const modifiers = talentModifiersForRanks({ "talent-1640": 3 }, "shaman");
    for (const school of ["fire", "frost", "nature"] as const) {
      expect(applyTalentModifierValue(100, modifiers, "damage-taken-percent", {
        tags: ["magic", school],
      })).toBe(94);
    }
    for (const school of ["arcane", "holy", "shadow"] as const) {
      expect(applyTalentModifierValue(100, modifiers, "damage-taken-percent", {
        tags: ["magic", school],
      })).toBe(100);
    }
    expect(applyTalentModifierValue(100, modifiers, "damage-taken-percent", {
      tags: ["physical"],
    })).toBe(100);
  });
});