import { CommandPhase } from "../phases";
import BattleScene from "../battle-scene";
import { addTextObject, TextStyle } from "./text";
import PartyUiHandler, { PartyUiMode } from "./party-ui-handler";
import { Mode } from "./ui";
import UiHandler from "./ui-handler";
import i18next from "../plugins/i18n";
import {Button} from "../enums/buttons";

export enum Command {
  FIGHT = 0,
  BALL,
  POKEMON,
  RUN
}

export default class CommandUiHandler extends UiHandler {
  private commandsContainer: Phaser.GameObjects.Container;
  private cursorObj: Phaser.GameObjects.Image;

  protected fieldIndex: integer = 0;
  protected cursor2: integer = 0;

  constructor(scene: BattleScene) {
    super(scene, Mode.COMMAND);
  }

  setup() {
    const ui = this.getUi();
    const commands = [
      i18next.t("commandUiHandler:fight"),
      i18next.t("commandUiHandler:ball"),
      i18next.t("commandUiHandler:pokemon"),
      i18next.t("commandUiHandler:run")
    ];

    this.commandsContainer = this.scene.add.container(216, -38.7);
    this.commandsContainer.setVisible(false);
    ui.add(this.commandsContainer);

    for (let c = 0; c < commands.length; c++) {
      const commandText = addTextObject(this.scene, c % 2 === 0 ? 0 : 55.8, c < 2 ? 0 : 16, commands[c], TextStyle.WINDOW);
      this.commandsContainer.add(commandText);
    }
  }

  show(args: any[]): boolean {
    super.show(args);

    this.fieldIndex = args.length ? args[0] as integer : 0;

    this.commandsContainer.setVisible(true);

    let commandPhase: CommandPhase;
    const currentPhase = this.scene.getCurrentPhase();
    if (currentPhase instanceof CommandPhase) {
      commandPhase = currentPhase;
    } else {
      commandPhase = this.scene.getStandbyPhase() as CommandPhase;
    }

    const messageHandler = this.getUi().getMessageHandler();
    messageHandler.commandWindow.setVisible(true);
    messageHandler.movesWindowContainer.setVisible(false);
    messageHandler.message.setWordWrapWidth(1110);
    messageHandler.showText(i18next.t("commandUiHandler:actionMessage", {pokemonName: commandPhase.getPokemon().name}), 0);
    this.setCursor(this.getCursor());

    return true;
  }

  processInput(button: Button): boolean {
    const ui = this.getUi();

    let success = false;

    const cursor = this.getCursor();

    if (button === Button.CANCEL || button === Button.ACTION) {

      if (button === Button.ACTION) {
        switch (cursor) {
        // Fight
        case 0:
          if ((this.scene.getCurrentPhase() as CommandPhase).checkFightOverride()) {
            return true;
          }
          ui.setMode(Mode.FIGHT, (this.scene.getCurrentPhase() as CommandPhase).getFieldIndex());
          success = true;
          break;
          // Ball
        case 1:
          ui.setModeWithoutClear(Mode.BALL);
          success = true;
          break;
          // Pokemon
        case 2:
          ui.setMode(Mode.PARTY, PartyUiMode.SWITCH, (this.scene.getCurrentPhase() as CommandPhase).getPokemon().getFieldIndex(), null, PartyUiHandler.FilterNonFainted);
          success = true;
          break;
          // Run
        case 3:
          (this.scene.getCurrentPhase() as CommandPhase).handleCommand(Command.RUN, 0);
          success = true;
          break;
        }
      } else {
        (this.scene.getCurrentPhase() as CommandPhase).cancel();
      }
    } else {
      switch (button) {
      case Button.UP:
        if (cursor >= 2) {
          success = this.setCursor(cursor - 2);
        }
        break;
      case Button.DOWN:
        if (cursor < 2) {
          success = this.setCursor(cursor + 2);
        }
        break;
      case Button.LEFT:
        if (cursor % 2 === 1) {
          success = this.setCursor(cursor - 1);
        }
        break;
      case Button.RIGHT:
        if (cursor % 2 === 0) {
          success = this.setCursor(cursor + 1);
        }
        break;
      }
    }

    if (success) {
      ui.playSelect();
    }

    return success;
  }

  getCursor(): integer {
    return !this.fieldIndex ? this.cursor : this.cursor2;
  }

  setCursor(cursor: integer): boolean {
    const changed = this.getCursor() !== cursor;
    if (changed) {
      if (!this.fieldIndex) {
        this.cursor = cursor;
      } else {
        this.cursor2 = cursor;
      }
    }

    if (!this.cursorObj) {
      this.cursorObj = this.scene.add.image(0, 0, "cursor");
      this.commandsContainer.add(this.cursorObj);
    }

    this.cursorObj.setPosition(-5 + (cursor % 2 === 1 ? 56 : 0), 8 + (cursor >= 2 ? 16 : 0));

    return changed;
  }

  clear(): void {
    super.clear();
    this.getUi().getMessageHandler().commandWindow.setVisible(false);
    this.commandsContainer.setVisible(false);
    this.getUi().getMessageHandler().clearText();
    this.eraseCursor();
  }

  eraseCursor(): void {
    if (this.cursorObj) {
      this.cursorObj.destroy();
    }
    this.cursorObj = null;
  }
}