import {
  Failure,
  IMAGES,
  LambdaTransformSound,
  SOUNDS,
  SPRITE_SPECS,
  SpriteSpec,
  Sprites,
} from "../config";
import { Entity, EntityNames, FunctionBox } from ".";
import {
  BoundingBox,
  Colliding,
  ComponentNames,
  Grid,
  GridSpawn,
  Highlight,
  Interactable,
  Modal,
  Sprite,
  Text,
} from "../components";
import { Coord2D, Direction } from "../interfaces";
import { tryWrap } from "../utils";
import { parse } from "../../interpreter";

export class LambdaFactory extends Entity {
  private static spriteSpec: SpriteSpec = SPRITE_SPECS.get(
    Sprites.LAMBDA_FACTORY
  ) as SpriteSpec;

  private spawns: number;
  private code: string;

  constructor(gridPosition: Coord2D, code: string, spawns: number) {
    super(EntityNames.LambdaFactory);

    this.spawns = spawns;
    this.code = code;

    this.addComponent(
      new BoundingBox(
        {
          x: 0,
          y: 0,
        },
        {
          width: LambdaFactory.spriteSpec.width,
          height: LambdaFactory.spriteSpec.height,
        },
        0
      )
    );

    this.addComponent(new Text(spawns.toString()));

    this.addComponent(new Colliding());

    this.addComponent(
      new GridSpawn(
        this.spawns,
        () => new FunctionBox({ x: 0, y: 0 }, this.code)
      )
    );

    this.addComponent(new Grid(gridPosition));

    this.addComponent(
      new Sprite(
        IMAGES.get(LambdaFactory.spriteSpec.sheet)!,
        { x: 0, y: 0 },
        {
          width: LambdaFactory.spriteSpec.width,
          height: LambdaFactory.spriteSpec.height,
        },
        LambdaFactory.spriteSpec.msPerFrame,
        LambdaFactory.spriteSpec.frames
      )
    );

    this.addComponent(
      new Highlight(this.onHighlight.bind(this), this.onUnhighlight.bind(this))
    );
  }

  private codeConsumer(code: string) {
    const parsed = tryWrap(() => parse(code));
    if (parsed.error) {
      return { error: parsed.error };
    }
    this.code = code;
    this.removeComponent(ComponentNames.Modal);
    return { consumed: true };
  }

  private onHighlight(direction: Direction) {
    if (direction === Direction.LEFT || direction === Direction.RIGHT) {
      this.addComponent(new Interactable(() => this.spawnNewLambda(direction)));
      return;
    }

    this.addComponent(new Interactable(this.interaction.bind(this)));
  }

  private interaction() {
    if (this.hasComponent(ComponentNames.Modal)) {
      return;
    }
    this.addComponent(
      new Modal({
        type: "CODE_EDITOR",
        codeInit: {
          code: this.code,
          codeConsumer: this.codeConsumer.bind(this),
        },
      })
    );
  }

  private onUnhighlight() {
    this.removeComponent(ComponentNames.Modal);
    this.removeComponent(ComponentNames.Interactable);
  }

  private spawnNewLambda(direction: Direction) {
    const parsed = tryWrap(() => parse(this.code));
    if (parsed.error) {
      SOUNDS.get(Failure.name)!.play();
      return;
    }

    const spawner = this.getComponent<GridSpawn>(ComponentNames.GridSpawn);
    spawner.spawnEntity(direction);

    const textComponent = this.getComponent<Text>(ComponentNames.Text);
    textComponent.text = spawner.spawnsLeft.toString();
    this.addComponent(textComponent);

    SOUNDS.get(LambdaTransformSound.name)!.play();
  }
}