import { TurnEndPhase } from "#app/phases/turn-end-phase";
import { Abilities } from "#enums/abilities";
import { Moves } from "#enums/moves";
import { Species } from "#enums/species";
import GameManager from "#test/testUtils/gameManager";
import Phaser from "phaser";
import { afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
import { BattlerTagType } from "#app/enums/battler-tag-type";
import { BerryPhase } from "#app/phases/berry-phase";

describe("Abilities - Unseen Fist", () => {
  let phaserGame: Phaser.Game;
  let game: GameManager;

  beforeAll(() => {
    phaserGame = new Phaser.Game({
      type: Phaser.HEADLESS,
    });
  });

  afterEach(() => {
    game.phaseInterceptor.restoreOg();
  });

  beforeEach(() => {
    game = new GameManager(phaserGame);
    game.override.battleType("single");
    game.override.starterSpecies(Species.URSHIFU);
    game.override.enemySpecies(Species.SNORLAX);
    game.override.enemyMoveset([Moves.PROTECT, Moves.PROTECT, Moves.PROTECT, Moves.PROTECT]);
    game.override.startingLevel(100);
    game.override.enemyLevel(100);
  });

  it("should cause a contact move to ignore Protect", () =>
    testUnseenFistHitResult(game, Moves.QUICK_ATTACK, Moves.PROTECT, true));

  it("should not cause a non-contact move to ignore Protect", () =>
    testUnseenFistHitResult(game, Moves.ABSORB, Moves.PROTECT, false));

  it("should not apply if the source has Long Reach", async () => {
    game.override.passiveAbility(Abilities.LONG_REACH);
    await testUnseenFistHitResult(game, Moves.QUICK_ATTACK, Moves.PROTECT, false);
  });

  it("should cause a contact move to ignore Wide Guard", () =>
    testUnseenFistHitResult(game, Moves.BREAKING_SWIPE, Moves.WIDE_GUARD, true));

  it("should not cause a non-contact move to ignore Wide Guard", () =>
    testUnseenFistHitResult(game, Moves.BULLDOZE, Moves.WIDE_GUARD, false));

  it("should cause a contact move to ignore Protect, but not Substitute", async () => {
    game.override.enemyLevel(1);
    game.override.moveset([Moves.TACKLE]);

    await game.classicMode.startBattle();

    const enemyPokemon = game.scene.getEnemyPokemon()!;
    enemyPokemon.addTag(BattlerTagType.SUBSTITUTE, 0, Moves.NONE, enemyPokemon.id);

    game.move.select(Moves.TACKLE);

    await game.phaseInterceptor.to(BerryPhase, false);

    expect(enemyPokemon.getTag(BattlerTagType.SUBSTITUTE)).toBeUndefined();
    expect(enemyPokemon.hp).toBe(enemyPokemon.getMaxHp());
  });
});

async function testUnseenFistHitResult(
  game: GameManager,
  attackMove: Moves,
  protectMove: Moves,
  shouldSucceed = true,
): Promise<void> {
  game.override.moveset([attackMove]);
  game.override.enemyMoveset([protectMove, protectMove, protectMove, protectMove]);

  await game.classicMode.startBattle();

  const leadPokemon = game.scene.getPlayerPokemon()!;
  expect(leadPokemon).not.toBe(undefined);

  const enemyPokemon = game.scene.getEnemyPokemon()!;
  expect(enemyPokemon).not.toBe(undefined);

  const enemyStartingHp = enemyPokemon.hp;

  game.move.select(attackMove);
  await game.phaseInterceptor.to(TurnEndPhase, false);

  if (shouldSucceed) {
    expect(enemyPokemon.hp).toBeLessThan(enemyStartingHp);
  } else {
    expect(enemyPokemon.hp).toBe(enemyStartingHp);
  }
}