import { existsSync } from "node:fs";
import { resolve } from "node:path";
import { afterEach, describe, expect, it } from "vitest";
import {
  getManastormCatalog,
  manastormAffixes,
  manastormGroupModifier,
  manastormScaling,
  setManastormCatalog,
} from "./manastorm";
import { INSTALLED_MANASTORM_RUNTIME_CATALOG } from "./manastormInstalledCatalog";
import runtimeSnapshot from "./generated/manastormRuntimeCatalog.json";

describe("installed Manastorm runtime adapter", () => {
  afterEach(() => setManastormCatalog(null));

  it("uses the complete installed level curve without treating unknown integer fields as multipliers", () => {
    setManastormCatalog(INSTALLED_MANASTORM_RUNTIME_CATALOG);
    expect(getManastormCatalog()).toBe(INSTALLED_MANASTORM_RUNTIME_CATALOG);
    expect(INSTALLED_MANASTORM_RUNTIME_CATALOG.maximumLevel).toBe(16_384);
    expect(manastormScaling(1)).toEqual({
      statMultiplier: 1,
      bonusLootChance: 0,
      experienceMultiplier: 1,
    });
    expect(manastormScaling(2)).toEqual({
      statMultiplier: expect.closeTo(1.003, 5),
      bonusLootChance: 0.03,
      experienceMultiplier: expect.closeTo(1.003, 5),
    });
  });

  it("retains distinct leveling and end-game modes and all resolved encounter identities", () => {
    expect(runtimeSnapshot.schemaVersion).toBe(2);
    expect(runtimeSnapshot.defaultModeId).toBe(0);
    expect(runtimeSnapshot.modeIds).toEqual([0, 2]);
    expect(runtimeSnapshot.modes.map(({ modeId }) => modeId)).toEqual([0, 2]);
    expect(runtimeSnapshot.encounters).toHaveLength(529);
    expect(runtimeSnapshot.sourceRows).toHaveLength(1_025);
    expect(runtimeSnapshot.encounters.filter(({ modeIds }) => modeIds.includes(0))).toHaveLength(227);
    expect(runtimeSnapshot.encounters.filter(({ modeIds }) => modeIds.includes(2))).toHaveLength(302);
    expect(INSTALLED_MANASTORM_RUNTIME_CATALOG.modifiers).toHaveLength(32_768);
    expect(INSTALLED_MANASTORM_RUNTIME_CATALOG.messages).toHaveLength(291);
    expect(runtimeSnapshot.encounters.find(({ encounterId }) => encounterId === 161))
      .toMatchObject({ creatureId: 644, modeIds: [0] });
    expect(runtimeSnapshot.encounters.find(({ encounterId }) => encounterId === 2161))
      .toMatchObject({ creatureId: 644, modeIds: [2] });
  });

  it("applies exact installed player-group multipliers for selectable party sizes", () => {
    setManastormCatalog(INSTALLED_MANASTORM_RUNTIME_CATALOG);
    expect(manastormGroupModifier(1)).toMatchObject({
      enemyStatMultiplier: 1,
      rewardMultiplier: 1,
    });
    expect(manastormGroupModifier(5)).toMatchObject({
      enemyStatMultiplier: expect.closeTo(1.4, 5),
      rewardMultiplier: expect.closeTo(1.4, 5),
    });
    expect(manastormGroupModifier(
      5,
      INSTALLED_MANASTORM_RUNTIME_CATALOG,
      2,
    )).toMatchObject({
      enemyStatMultiplier: expect.closeTo(1.4, 5),
      rewardMultiplier: expect.closeTo(1.4, 5),
      sourceModeId: 0,
      appliesToModeIds: [0, 2],
    });
  });

  it("imports and deterministically rotates the installed affix unlock set", () => {
    setManastormCatalog(INSTALLED_MANASTORM_RUNTIME_CATALOG);
    expect(INSTALLED_MANASTORM_RUNTIME_CATALOG.affixes).toHaveLength(14);
    expect(manastormAffixes(10)).toEqual([]);
    expect(manastormAffixes(11)).toEqual([
      expect.objectContaining({
        id: "manastorm-affix-manabomb",
        name: "Mana Bomb",
        description: expect.stringContaining("mana bomb"),
      }),
    ]);
    expect(manastormAffixes(13)).toEqual([
      expect.objectContaining({
        id: "manastorm-affix-lightningrod",
        name: "Lightning Rod",
      }),
    ]);
    const replayAffixes = manastormAffixes(
      10,
      INSTALLED_MANASTORM_RUNTIME_CATALOG,
      0,
      101,
    );
    expect(replayAffixes).toHaveLength(1);
    expect(manastormAffixes(
      10,
      INSTALLED_MANASTORM_RUNTIME_CATALOG,
      0,
      101,
    )).toEqual(replayAffixes);
    expect(manastormAffixes(
      13,
      INSTALLED_MANASTORM_RUNTIME_CATALOG,
      0,
      101,
    )).toEqual([
      expect.objectContaining({
        id: "manastorm-affix-lightningrod",
        name: "Lightning Rod",
      }),
    ]);

    const level101Affixes = manastormAffixes(101);
    expect(level101Affixes).toHaveLength(1);
    expect(INSTALLED_MANASTORM_RUNTIME_CATALOG.affixes?.map(({ id }) => id))
      .toContain(level101Affixes[0]?.id);
    for (const affix of INSTALLED_MANASTORM_RUNTIME_CATALOG.affixes ?? []) {
      expect(affix.iconReference, `${affix.name} should retain its installed icon`).toBeTruthy();
      expect(
        existsSync(resolve(
          process.cwd(),
          "public",
          "assets",
          "ui",
          "spells",
          `${affix.iconReference?.toLowerCase()}.png`,
        )),
        `${affix.name} icon should be exported`,
      ).toBe(true);
    }
  });

  it("ships every resolved Manastorm message icon to the browser", () => {
    expect(INSTALLED_MANASTORM_RUNTIME_CATALOG.messages).toHaveLength(291);
    for (const message of INSTALLED_MANASTORM_RUNTIME_CATALOG.messages ?? []) {
      expect(message.iconReference, `${message.title} should retain an installed icon`).toBeTruthy();
      expect(existsSync(resolve(
        process.cwd(),
        "public",
        "assets",
        "ui",
        "spells",
        `${message.iconReference?.toLowerCase()}.png`,
      ))).toBe(true);
    }
  });
});