import { BattleStyle } from "#app/enums/battle-style";
import type { SpeciesId } from "#enums/species-id";
import { getGameMode } from "#app/game-mode";
import { GameModes } from "#enums/game-modes";
import overrides from "#app/overrides";
import { CommandPhase } from "#app/phases/command-phase";
import { EncounterPhase } from "#app/phases/encounter-phase";
import { SelectStarterPhase } from "#app/phases/select-starter-phase";
import { TurnInitPhase } from "#app/phases/turn-init-phase";
import { UiMode } from "#enums/ui-mode";
import { generateStarter } from "../gameManagerUtils";
import { GameManagerHelper } from "./gameManagerHelper";

/**
 * Helper to handle classic-mode specific operations.
 */
export class ClassicModeHelper extends GameManagerHelper {
  /**
   * Runs the classic game to the summon phase.
   * @param species - An array of {@linkcode Species} to summon.
   * @returns A promise that resolves when the summon phase is reached.
   */
  async runToSummon(species: SpeciesId[]): Promise<void>;
  /**
   * Runs the classic game to the summon phase.
   * Selects 3 daily run starters with a fixed seed of "test"
   * (see `DailyRunConfig.getDailyRunStarters` in `daily-run.ts` for more info).
   * @returns A promise that resolves when the summon phase is reached.
   * @deprecated - Specifying the starters helps prevent inconsistencies from internal RNG changes.
   */
  async runToSummon(): Promise<void>;
  async runToSummon(species: SpeciesId[] | undefined): Promise<void>;
  async runToSummon(species?: SpeciesId[]): Promise<void> {
    await this.game.runToTitle();

    if (this.game.override.disableShinies) {
      this.game.override.shiny(false).enemyShiny(false);
    }

    this.game.onNextPrompt("TitlePhase", UiMode.TITLE, () => {
      this.game.scene.gameMode = getGameMode(GameModes.CLASSIC);
      const starters = generateStarter(this.game.scene, species);
      const selectStarterPhase = new SelectStarterPhase();
      this.game.scene.phaseManager.pushPhase(new EncounterPhase(false));
      selectStarterPhase.initBattle(starters);
    });

    await this.game.phaseInterceptor.to(EncounterPhase);
    if (overrides.OPP_HELD_ITEMS_OVERRIDE.length === 0 && this.game.override.removeEnemyStartingItems) {
      this.game.removeEnemyHeldItems();
    }
  }

  /**
   * Transitions to the start of a battle.
   * @param species - An array of {@linkcode Species} to start the battle with.
   * @returns A promise that resolves when the battle is started.
   */
  async startBattle(species: SpeciesId[]): Promise<void>;
  /**
   * Transitions to the start of a battle.
   * Will select 3 daily run starters with a fixed seed of "test"
   * (see `DailyRunConfig.getDailyRunStarters` in `daily-run.ts` for more info).
   * @returns A promise that resolves when the battle is started.
   * @deprecated - Specifying the starters helps prevent inconsistencies from internal RNG changes.
   */
  async startBattle(): Promise<void>;
  async startBattle(species?: SpeciesId[]): Promise<void> {
    await this.runToSummon(species);

    if (this.game.scene.battleStyle === BattleStyle.SWITCH) {
      this.game.onNextPrompt(
        "CheckSwitchPhase",
        UiMode.CONFIRM,
        () => {
          this.game.setMode(UiMode.MESSAGE);
          this.game.endPhase();
        },
        () => this.game.isCurrentPhase(CommandPhase) || this.game.isCurrentPhase(TurnInitPhase),
      );

      this.game.onNextPrompt(
        "CheckSwitchPhase",
        UiMode.CONFIRM,
        () => {
          this.game.setMode(UiMode.MESSAGE);
          this.game.endPhase();
        },
        () => this.game.isCurrentPhase(CommandPhase) || this.game.isCurrentPhase(TurnInitPhase),
      );
    }

    await this.game.phaseInterceptor.to(CommandPhase);
    console.log("==================[New Battle]==================");
  }
}