import { describe, expect, it } from "vitest";
import {
  ROM_COA_DRUID_ADVANCED_REBIRTH_ID,
  ROM_COA_DRUID_AMULET_OF_LIGHT_ITEM_ID,
  ROM_COA_DRUID_GOLDEN_AMULET_ITEM_ID,
  ROM_COA_DRUID_REBIRTH_ID,
  ROM_COA_DRUID_SPIRIT_GUIDANCE_ID,
  ROM_COA_DRUID_SUPREME_REBIRTH_ID,
  romCoaDruidRebirthDebtRule,
  romCoaSpiritGuidanceFactionOutcome,
} from "./romDruidCurrentCoaMechanics";

describe("current CoA Druid faction-conversion and Rebirth rules", () => {
  it("keeps Spirit Guidance's player-target restriction explicit", () => {
    expect(ROM_COA_DRUID_SPIRIT_GUIDANCE_ID).toBe(493536);
    expect(romCoaSpiritGuidanceFactionOutcome({
      targetKind: "player",
      casterReputation: 10,
    })).toBe("player-target-prohibited");
  });

  it("converts an NPC only when caster reputation is nonnegative", () => {
    expect(romCoaSpiritGuidanceFactionOutcome({
      targetKind: "npc",
      casterReputation: 0,
    })).toBe("becomes-friendly");
    expect(romCoaSpiritGuidanceFactionOutcome({
      targetKind: "npc",
      casterReputation: -1,
    })).toBe("remains-hostile");
  });

  it("does not guess the conversion result when reputation is unavailable", () => {
    expect(romCoaSpiritGuidanceFactionOutcome({
      targetKind: "npc",
      casterReputation: null,
    })).toBe("unknown-reputation");
    expect(romCoaSpiritGuidanceFactionOutcome({
      targetKind: "npc",
      casterReputation: Number.NaN,
    })).toBe("unknown-reputation");
  });

  it("reports basic Rebirth's 30% baseline and leaves its extra amulet bonus unquantified", () => {
    expect(romCoaDruidRebirthDebtRule(ROM_COA_DRUID_REBIRTH_ID)).toEqual({
      debtReductionPercent: 30,
      itemRule: {
        kind: "optional-unquantified-bonus",
        itemIds: [ROM_COA_DRUID_GOLDEN_AMULET_ITEM_ID, ROM_COA_DRUID_AMULET_OF_LIGHT_ITEM_ID],
      },
      extraDebtReductionPercent: null,
    });
  });

  it("maps Advanced Rebirth to 45% with its required Amulet of Light", () => {
    expect(romCoaDruidRebirthDebtRule(ROM_COA_DRUID_ADVANCED_REBIRTH_ID)).toEqual({
      debtReductionPercent: 45,
      itemRule: { kind: "required", itemId: ROM_COA_DRUID_AMULET_OF_LIGHT_ITEM_ID },
      extraDebtReductionPercent: 0,
    });
  });

  it("maps Supreme Rebirth to 75% with its required Golden Amulet", () => {
    expect(romCoaDruidRebirthDebtRule(ROM_COA_DRUID_SUPREME_REBIRTH_ID)).toEqual({
      debtReductionPercent: 75,
      itemRule: { kind: "required", itemId: ROM_COA_DRUID_GOLDEN_AMULET_ITEM_ID },
      extraDebtReductionPercent: 0,
    });
  });

  it("does not map unrelated or unknown spell IDs", () => {
    expect(romCoaDruidRebirthDebtRule(493538)).toBeNull();
    expect(romCoaDruidRebirthDebtRule(0)).toBeNull();
  });
});