import {
  _decorator,
  Color,
  Component,
  EventMouse,
  Node,
  Sprite,
  UITransform,
  v2,
  v3,
  Vec3,
} from "cc";
import { NpkImage } from "../Tool/NPKImage";
import { MapTileDirection } from "./MapTileData";
import { BaseSprite } from "../GlobalScript/CommonComponent/BaseSprite";
import { DiamondCheck, Point } from "./common/InDiamondCheck";
const { ccclass } = _decorator;

enum buttonState {
  // 普通
  Normal,
  // 悬停
  Hover,
  // // 按下
  // Down,
}

@ccclass("MapTileButtonComponent")
export class MapTileButtonComponent extends Component {
  direction: MapTileDirection;

  private position: Vec3;

  /// 状态
  set state(newState: buttonState) {
    if (!this.SpriteObj) {
      this.SpriteObj = this.node.getComponent(Sprite);
    }
    switch (newState) {
      case buttonState.Normal:
        this.SpriteObj.color = Color.WHITE;
        break;
      case buttonState.Hover:
        this.SpriteObj.color = Color.YELLOW;
        break;
    }
  }

  //精灵对象
  private SpriteObj: Sprite;

  start() {
    this.position = this.node.getPosition();

    if (!this.node.getComponent(UITransform)) {
      this.node.addComponent(UITransform);
    }
    this.node.getComponent(UITransform).anchorPoint = v2(0, 0);

    const bs = this.node.addComponent(BaseSprite);
    bs.updateSpriteFrame(NpkImage.board, this.direction);

    // this.node.on(Node.EventType.MOUSE_ENTER, this.OnHover, this);
    this.node.on(Node.EventType.MOUSE_LEAVE, this.OffHover, this);
    this.node.on(Node.EventType.MOUSE_DOWN, this.onEvent, this);
    this.node.on(Node.EventType.MOUSE_UP, this.onEvent, this);
    this.node.on(Node.EventType.MOUSE_MOVE, this.onEvent, this);
  }

  update(deltaTime: number) {}

  /// 事件的统一处理
  onEvent(event: EventMouse) {
    /// 判断是否在矩形范围内
    const inDiamond = this.getEventDiamond(event);
    if (inDiamond) {
      this.OnHover();

      switch (event.type) {
        case Node.EventType.MOUSE_DOWN:
            this.OnDown(event);
          break;
        case Node.EventType.MOUSE_UP:
            this.OnUp(event);
          break;
      }
    } else {
      // 结束悬浮状态
      this.OffHover();
      // 事件穿透
      event.preventSwallow = true;
    }
  }

  // 鼠标悬浮状态
  OnHover() {
    this.state = buttonState.Hover;
  }

  // 鼠标悬浮状态结束
  OffHover() {
    this.state = buttonState.Normal;
    this.node.setPosition(this.position);
  }
  /// 按下
  OnDown(event: EventMouse) {
    if (event.getButton() != EventMouse.BUTTON_LEFT) return;
    const np = this.node.position;
    this.node.setPosition(np.x, np.y - 1);
  }

  OnUp(event: EventMouse) {
    //必须是鼠标左键
    if (event.getButton() != EventMouse.BUTTON_LEFT) return;
    const np = this.node.position;
    this.node.setPosition(this.position);
  }

  // 判断事件是否在矩形内
  getEventDiamond(event: EventMouse): boolean {
    const point = event.getLocation();
    // 转换获取到 node 内的坐标
    const location = this.node
      .getComponent(UITransform)
      .convertToNodeSpaceAR(v3(point.x, point.y, 0));
    // 是否在图片的菱形范围内
    const inDiamond = DiamondCheck.isPointInDiamond(
      { x: location.x, y: location.y },
      this.getDiamond()
    );

    return inDiamond;
  }

  // 判断坐标是否在矩形内部
  getDiamond(): [Point, Point, Point, Point] {
    let w = 58.5;
    let h = 37.5;
    let hc = 10;
    let wc = 17;

    switch (this.direction) {
      case MapTileDirection.nook:
        w = 58.5;
        h = 37.5;
        return [
          { x: w, y: 0 },
          { x: w + w, y: -h },
          { x: w, y: -h - h },
          { x: 0, y: -h },
        ];
      case MapTileDirection.horizontal:
        w = 42;
        h = 27;
        return [
          { x: w + wc, y: 0 },
          { x: w + w + wc, y: -h },
          { x: w, y: -h - h - hc },
          { x: 0, y: -h - hc },
        ];
      case MapTileDirection.vertical:
        w = 42;
        h = 27;
        return [
          { x: w, y: 0 },
          { x: w + w + wc, y: -h - hc },
          { x: w + wc, y: -h - h - hc },
          { x: 0, y: -h },
        ];
    }
  }
}