import { AbstractMesh, ArcRotateCamera, BoundingBoxGizmo, Color3, EventState, GizmoManager, Mesh, Observable, PickingInfo, PointerEventTypes, PointerInfo, Quaternion, Scene, UtilityLayerRenderer, Vector3 } from "@babylonjs/core";
import { AdvancedDynamicTexture, Button, Container, InputText, Rectangle, StackPanel, TextBlock } from "@babylonjs/gui";
import { ModeManager, ModeType } from "../controller/mode-manager";
import { SceneManager } from "../controller/scene-manager";
import { Game } from "../game";
import { ModelInfo } from "../model/info/model/model-info";
import { UIBase } from "../view/window-base/ui-base";
import { BabylonTool } from "./babylon-tool";
import { BabylonUIStyleTool } from "./babylon-ui-style-tool";


//transform 信息的UI
export enum TransformUIType {
  Hide,
  Position,
  Rotation,
  Scale,
}

export class GizmoTool {
  static s_gizmoManager: GizmoManager;
  static s_boundingBoxGizmo: BoundingBoxGizmo;
  static s_needUpdateGizmo: NeedUpdateGizmo; //需要更新的gizmo分量
  static s_transformUIInfo: TransformUIInfo;
  static s_camera: ArcRotateCamera;

  static onPickMeshInfoObservable: Observable<ModelInfo>; //pick事件
  static onGizmoAimMeshObservable: Observable<AbstractMesh>;
  static s_nowPickAim: ModelInfo;//当前pick的目标
  static s_nowPickAim_mesh: AbstractMesh;//当前pick的目标

  static s_btn_poisition: Button;
  static s_btn_rotation: Button;
  static s_btn_scaling: Button;

  static init(scene: Scene, uiRoot: AdvancedDynamicTexture, camera: ArcRotateCamera) {
    GizmoTool.s_camera = camera;
    GizmoTool.s_boundingBoxGizmo = new BoundingBoxGizmo();
    GizmoTool.s_boundingBoxGizmo.setColor(new Color3(1, 0.52, 0.07));
    GizmoTool.s_boundingBoxGizmo.setEnabledRotationAxis('');
    GizmoTool.s_boundingBoxGizmo.setEnabledScaling(false);

    GizmoTool.initTransformUI(uiRoot);

    GizmoTool.s_needUpdateGizmo = new NeedUpdateGizmo();
    GizmoTool.s_gizmoManager = new GizmoManager(scene, undefined);
    GizmoTool.s_gizmoManager.positionGizmoEnabled = true;
    GizmoTool.s_gizmoManager.rotationGizmoEnabled = true;
    GizmoTool.s_gizmoManager.scaleGizmoEnabled = true;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.planarGizmoEnabled = false;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.yPlaneGizmo.isEnabled = true;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.yPlaneGizmo.scaleRatio = 1;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.updateGizmoRotationToMatchAttachedMesh = false;
    GizmoTool.s_gizmoManager.usePointerToAttachGizmos = false;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.onDragStartObservable.add(
      GizmoTool.onPositionGizmoStart
    );
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.onDragEndObservable.add(
      GizmoTool.onPositionGizmoEnd
    );
    GizmoTool.s_gizmoManager.gizmos.rotationGizmo.onDragStartObservable.add(
      GizmoTool.onRotationGizmoStart
    );
    GizmoTool.s_gizmoManager.gizmos.rotationGizmo.onDragEndObservable.add(
      GizmoTool.onRotationGizmoEnd
    );
    GizmoTool.s_gizmoManager.gizmos.scaleGizmo.onDragStartObservable.add(
      GizmoTool.onScaleGizmoStart
    );
    GizmoTool.s_gizmoManager.gizmos.scaleGizmo.onDragEndObservable.add(
      GizmoTool.onScaleGizmoEnd
    );

    scene.onPointerObservable.add(GizmoTool.onPointerObservable);

    GizmoTool.onGizmoAimMeshObservable = new Observable();


    GizmoTool.onPickMeshInfoObservable = new Observable();
    GizmoTool.onPickMeshInfoObservable.add(GizmoTool.onChangeGizmoAim);

    scene.onBeforeRenderObservable.add(GizmoTool.onBeforeRender);
    GizmoTool.onTransformUITypeChange(TransformUIType.Hide);
  }

  static dispose() {

  }

  static onBeforeRender(
    eventData: Scene,
    eventState: EventState
  ) {
    GizmoTool.updateTransformUI();

    let speed = 10 / GizmoTool.s_camera.radius;

    speed *= 1000;

    GizmoTool.s_camera.panningSensibility = speed;//动态修改平移灵敏度


    GizmoTool.s_camera.wheelDeltaPercentage = 0.005;

    if (SceneManager.Instance.cameraMode_Is2D) {
      let camera = SceneManager.Instance.defaultCamera;
      camera.beta = 0;
      if (camera.beta > 0.2) {
        SceneManager.Instance.changeCameraMode(false);
      }
      else {
        //GizmoTool.s_camera.size = GizmoTool.s_camera.radius * 0.01;
        //console.log(GizmoTool.s_camera.orthoTop);
        let size_width = GizmoTool.s_camera.radius * Game.instance.canvas.width * 0.0008;
        let size_height = GizmoTool.s_camera.radius * Game.instance.canvas.height * 0.0008;
        camera.orthoTop = size_height;
        camera.orthoBottom = - size_height;
        camera.orthoLeft = - size_width;
        camera.orthoRight = size_width;

      }


    }


  }

  //鼠标事件监听
  static onPointerObservable(
    eventData: PointerInfo,
    eventState: EventState
  ) {
    switch (eventData.type) {
      case PointerEventTypes.POINTERDOWN:
        //console.log("指针按下");

        break;
      case PointerEventTypes.POINTERUP:
        //console.log("指针抬起");
        GizmoTool.pickRayTest(eventData.pickInfo);
        break;
      case PointerEventTypes.POINTERMOVE:
        //console.log("指针移动");

        break;
    }
  }


  /**
   * 替换选中
   * @param modelInfo 新的modelInfo
   */
  static replacePick(modelInfo: ModelInfo) {
    if (GizmoTool.s_nowPickAim != modelInfo) {
      GizmoTool.onChangeGizmoAim(modelInfo);
    }
  }

  //射线检测
  static pickRayTest(pickResult: PickingInfo) {
    if (!SceneManager.s_isPointerDrag) {
      if (pickResult.hit) {
        let meshName = pickResult.pickedMesh.name;
        // GizmoTool.onPickMeshObservable.notifyObservers(pickResult.pickedMesh);
        //GizmoTool.changeGizmoAim(pickResult.pickedMesh);

      } else {
        //GizmoTool.onPickMeshInfoObservable.notifyObservers(null);
      }
    }

    // console.log("pickRayTest " + pickResult.hit);

  }

  //改变gizmo目标mesh
  static onChangeGizmoAim(modelInfo: ModelInfo) {
    // console.trace("改变目标", modelInfo);
    let mesh = null;
    GizmoTool.s_nowPickAim = modelInfo;

    if (modelInfo != null) {
      mesh = modelInfo.modelBox;
    }

    GizmoTool.changeGizmoAim(mesh);

    if (ModeManager.currentMode == ModeType.Edit) {
      GizmoTool.s_boundingBoxGizmo.attachedMesh = mesh;
    }


    GizmoTool.s_transformUIInfo.Mesh = mesh;
    GizmoTool.s_transformUIInfo.modelInfo = modelInfo;
    GizmoTool.updateTransformUI(mesh != null);
  }

  //改变Gizmo目标
  static changeGizmoAim(mesh: AbstractMesh, x: boolean = true, y = true, z = true) {
    //console.trace("目标", ModeManager.currentMode);
    GizmoTool.s_nowPickAim_mesh = mesh;
    GizmoTool.s_gizmoManager.attachToMesh(mesh);
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.xGizmo.isEnabled = x;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.yGizmo.isEnabled = y;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.yPlaneGizmo.isEnabled = x && z;
    GizmoTool.s_gizmoManager.gizmos.positionGizmo.zGizmo.isEnabled = z;
    GizmoTool.onGizmoAimMeshObservable.notifyObservers(mesh);

  }

  //离开当前目标(如果当前在这个)
  static leaveTheGizmoAim(modelInfo: ModelInfo) {
    if (GizmoTool.s_nowPickAim != null && GizmoTool.s_nowPickAim == modelInfo) {
      GizmoTool.onChangeGizmoAim(null);
    }
  }

  //离开当前目标(如果当前在这个)
  static leaveTheGizmoAimMesh(mesh: AbstractMesh) {
    if (GizmoTool.s_nowPickAim_mesh != null && GizmoTool.s_nowPickAim_mesh == mesh) {
      GizmoTool.onChangeGizmoAim(null);
    }
  }

  //初始化
  static initTransformUI(advTexture: AdvancedDynamicTexture) {
    let transformUIInfo = new TransformUIInfo();
    GizmoTool.s_transformUIInfo = transformUIInfo;

    let width = 200;
    let height = 150;

    let ui_transformUIRoot = new Rectangle('GizmoWindow');
    ui_transformUIRoot.width = width + 'px';
    ui_transformUIRoot.height = height + 'px';
    ui_transformUIRoot.background = UIBase.color_gray;
    ui_transformUIRoot.color = '#FFFFFF';
    ui_transformUIRoot.alpha = 0.8;
    ui_transformUIRoot.horizontalAlignment =
      Container.HORIZONTAL_ALIGNMENT_LEFT;
    ui_transformUIRoot.verticalAlignment =
      Container.VERTICAL_ALIGNMENT_TOP;
    ui_transformUIRoot.thickness = 0;
    ui_transformUIRoot.cornerRadius = BabylonUIStyleTool.cornerRadius_window1;
    ui_transformUIRoot.zIndex = BabylonUIStyleTool.c_zIndex_gizmo;
    advTexture.addControl(ui_transformUIRoot);
    transformUIInfo.root = ui_transformUIRoot;

    let stackPanel = new StackPanel('verticalGroup');
    stackPanel.isVertical = true;
    stackPanel.width = width + 'px';
    stackPanel.height = height + 'px';
    ui_transformUIRoot.addControl(stackPanel);

    let txt_title = new TextBlock('title', '信息：(x,y,z)');
    transformUIInfo.titleText = txt_title;
    txt_title.width = width + 'px';
    txt_title.height = '45px';

    stackPanel.addControl(txt_title);

    for (let i = 0; i < 3; i++) {
      let l_InputInfo: UIVector3InputInfo = new UIVector3InputInfo();
      let postionRoot = new StackPanel('Group' + i);
      stackPanel.addControl(postionRoot);
      postionRoot.width = width + 'px';
      postionRoot.height = height * 0.23 + 'px';
      postionRoot.isVertical = false;

      let groupName = Button.CreateSimpleButton(
        'groupName',
        'info:'
      );
      groupName.width = width * 0.22 + 'px';
      groupName.height = height * 0.22 + 'px';
      groupName.fontSize = 12;
      groupName.background = '#FF8833';
      groupName.color = 'white';
      groupName.thickness = 0;
      groupName.paddingBottom = '2px';
      postionRoot.addControl(groupName);

      groupName.onPointerClickObservable.add(() => {
        switch (i) {
          case 0:
            transformUIInfo.OnTypeChangeObservable.notifyObservers(
              TransformUIType.Position
            );
            break;
          case 1:
            transformUIInfo.OnTypeChangeObservable.notifyObservers(
              TransformUIType.Rotation
            );
            break;
          case 2:
            transformUIInfo.OnTypeChangeObservable.notifyObservers(
              TransformUIType.Scale
            );
            break;
        }
      });

      switch (i) {
        case 0:
          transformUIInfo.position = l_InputInfo;
          postionRoot.name = 'transform';
          groupName.textBlock.text = '位置：';
          GizmoTool.s_btn_poisition = groupName;
          break;
        case 1:
          transformUIInfo.rotation = l_InputInfo;
          postionRoot.name = 'rotation';
          groupName.textBlock.text = '旋转：';
          GizmoTool.s_btn_rotation = groupName;
          break;
        case 2:
          transformUIInfo.scale = l_InputInfo;
          postionRoot.name = 'scale';
          groupName.textBlock.text = '缩放：';
          GizmoTool.s_btn_scaling = groupName;
          break;
      }

      for (let j = 0; j < 3; j++) {
        let xyz = new InputText('xyz', '12');
        xyz.width = width * 0.25 + 'px';
        xyz.height = height * 0.22 + 'px';

        xyz.color = 'white';
        xyz.alpha = 0.8;
        xyz.margin = '5px';
        xyz.fontSize = 13;
        xyz.thickness = 0.1;
        xyz.paddingLeft = '0.1px';
        xyz.paddingBottom = '2px';

        switch (i) {
          case 0:
            xyz.onTextChangedObservable.add(GizmoTool.onGizmoUIInput_Position);
            break;
          case 1:
            xyz.onTextChangedObservable.add(GizmoTool.onGizmoUIInput_Rotation);
            break;
          case 2:
            xyz.onTextChangedObservable.add(GizmoTool.onGizmoUIInput_Scale);
            break;
        }

        switch (j) {
          case 0:
            l_InputInfo.x = xyz;
            xyz.name = 'x';
            xyz.background = '#C20000';
            break;
          case 1:
            l_InputInfo.y = xyz;
            xyz.name = 'y';
            xyz.background = '#00820F';
            break;
          case 2:
            l_InputInfo.z = xyz;
            xyz.name = 'z';
            xyz.background = '#0047C2';
            break;
        }

        postionRoot.addControl(xyz);
      }
    }
    transformUIInfo.OnTypeChangeObservable.add(
      GizmoTool.onTransformUITypeChange
    );
  }

  static onPositionGizmoStart() {
    GizmoTool.s_needUpdateGizmo.position = true;
  }

  static onPositionGizmoEnd() {
    GizmoTool.s_needUpdateGizmo.position = false;
  }

  static onRotationGizmoStart() {
    GizmoTool.s_needUpdateGizmo.rotation = true;
  }
  static onRotationGizmoEnd() {
    GizmoTool.s_needUpdateGizmo.rotation = false;
  }

  static onScaleGizmoStart() {
    GizmoTool.s_needUpdateGizmo.scale = true;
  }

  static onScaleGizmoEnd() {
    GizmoTool.s_needUpdateGizmo.scale = false;
  }

  static currentGizmoType: TransformUIType = TransformUIType.Position;
  //操作的类型发生变化： 隐藏、position、rotation、scale
  static onTransformUITypeChange(uiType: TransformUIType) {
    // console.log("改变type" + uiType);
    let transformUIInfo = GizmoTool.s_transformUIInfo;
    // if (uiType == TransformUIType.Hide) {
    //   transformUIInfo.root.isVisible = false;
    // } else {
    //   transformUIInfo.root.isVisible = true;
    // }
    transformUIInfo.root.isVisible = ModeManager.isDebug;//先隐藏，因为效果图中没有

    let isEditMode = ModeManager.currentMode == ModeType.Edit;

    let isPosition = uiType == TransformUIType.Position && isEditMode;
    GizmoTool.s_btn_poisition.background = isPosition
      ? UIBase.color_yellow
      : UIBase.color_null;
    GizmoTool.s_gizmoManager.positionGizmoEnabled = isPosition;

    let isRotation = uiType == TransformUIType.Rotation && isEditMode;
    GizmoTool.s_btn_rotation.background = isRotation
      ? UIBase.color_yellow
      : UIBase.color_null;
    GizmoTool.s_gizmoManager.rotationGizmoEnabled = isRotation;

    let isScaling = uiType == TransformUIType.Scale && isEditMode;
    GizmoTool.s_btn_scaling.background = isScaling
      ? UIBase.color_yellow
      : UIBase.color_null;
    GizmoTool.s_gizmoManager.scaleGizmoEnabled = isScaling;

    if (uiType == TransformUIType.Hide || !ModeManager.s_isMakeMode) { //隐藏选中框
      GizmoTool.s_boundingBoxGizmo.attachedMesh = null;

    }

  }

  //更新显示
  static updateTransformUI(updateAll = false) {
    let transformUIInfo = GizmoTool.s_transformUIInfo;
    let updateGizmoInfo = GizmoTool.s_needUpdateGizmo;
    let mesh = transformUIInfo.mesh;

    if (transformUIInfo == null || mesh == null) {
      transformUIInfo.titleText.text = '';
      return;
    }

    transformUIInfo.titleText.text = mesh.name;

    if (updateGizmoInfo.position || updateAll) {
      transformUIInfo.position.x.text = mesh.position.x.toPrecision(6);
      transformUIInfo.position.y.text = mesh.position.y.toPrecision(6);
      transformUIInfo.position.z.text = mesh.position.z.toPrecision(6);
    }

    if (updateGizmoInfo.rotation || updateAll) {
      let augle = mesh.rotationQuaternion.toEulerAngles();

      let radian1 = BabylonTool.c_radian1; //1弧度
      augle = augle.multiplyByFloats(radian1, radian1, radian1);

      transformUIInfo.rotation.x.text = augle.x.toPrecision(6);
      transformUIInfo.rotation.y.text = augle.y.toPrecision(6);
      transformUIInfo.rotation.z.text = augle.z.toPrecision(6);
    }

    if (updateGizmoInfo.scale || updateAll) {
      let originalScaling =
        GizmoTool.s_transformUIInfo.modelInfo.modelData.transformData
          .originalScaling;
      transformUIInfo.scale.x.text = (
        mesh.absoluteScaling.x / originalScaling.x
      ).toPrecision(6);
      transformUIInfo.scale.y.text = (
        mesh.absoluteScaling.y / originalScaling.y
      ).toPrecision(6);
      transformUIInfo.scale.z.text = (
        mesh.absoluteScaling.z / originalScaling.z
      ).toPrecision(6);
    }
  }

  //输入gizmo 数值 - position
  static onGizmoUIInput_Position(
    eventData: InputText,
    eventState: EventState
  ) {
    let transformUIInfo = GizmoTool.s_transformUIInfo;

    switch (eventData.name) {
      case 'x':
        transformUIInfo.Mesh.position.x = Number.parseFloat(
          transformUIInfo.position.x.text
        );
        break;
      case 'y':
        transformUIInfo.Mesh.position.y = Number.parseFloat(
          transformUIInfo.position.y.text
        );
        break;
      case 'z':
        transformUIInfo.Mesh.position.z = Number.parseFloat(
          transformUIInfo.position.z.text
        );
        break;
    }
  }

  //输入gizmo 数值 - rotation
  static onGizmoUIInput_Rotation(
    eventData: InputText,
    eventState: EventState
  ) {
    let transformUIInfo = GizmoTool.s_transformUIInfo;

    let eugle = new Vector3();
    eugle.x =
      Number.parseFloat(transformUIInfo.rotation.x.text) /
      BabylonTool.c_radian1;
    eugle.y =
      Number.parseFloat(transformUIInfo.rotation.y.text) /
      BabylonTool.c_radian1;
    eugle.z =
      Number.parseFloat(transformUIInfo.rotation.z.text) /
      BabylonTool.c_radian1;

    transformUIInfo.Mesh.rotationQuaternion = Quaternion.FromEulerAngles(
      eugle.x,
      eugle.y,
      eugle.z
    );
  }

  //输入gizmo 数值 - scale
  static onGizmoUIInput_Scale(
    eventData: InputText,
    eventState: EventState
  ) {
    let transformUIInfo = GizmoTool.s_transformUIInfo;
    let originalScaling =
      GizmoTool.s_transformUIInfo.modelInfo.modelData.transformData
        .originalScaling;

    switch (eventData.name) {
      case 'x':
        transformUIInfo.Mesh.scaling.x =
          Number.parseFloat(transformUIInfo.scale.x.text) * originalScaling.x;
        break;
      case 'y':
        transformUIInfo.Mesh.scaling.y =
          Number.parseFloat(transformUIInfo.scale.y.text) * originalScaling.y;
        break;
      case 'z':
        transformUIInfo.Mesh.scaling.z =
          Number.parseFloat(transformUIInfo.scale.z.text) * originalScaling.z;
        break;
    }
  }
}

//需要更新gizmo的类型
class NeedUpdateGizmo {
  public position = true;
  public rotation = false;
  public scale = false;
}



//存储vector3 对应文本输入UI的映射
class UIVector3InputInfo {
  public x: InputText;
  public y: InputText;
  public z: InputText;
}

//存储 transform 相关UI输入类的映射
class TransformUIInfo {
  public root: Rectangle;
  public position: UIVector3InputInfo;
  public rotation: UIVector3InputInfo;
  public scale: UIVector3InputInfo;
  public titleText: TextBlock;
  public nowType: TransformUIType = TransformUIType.Hide;
  public mesh: AbstractMesh;
  public modelInfo: ModelInfo;
  public onTypeChangeObservable: Observable<TransformUIType>;
  public onPositionChangeObservable: Observable<Vector3> = new Observable<Vector3>();
  public onRotationChangeObservable: Observable<Vector3> = new Observable<Vector3>();
  public onScaleChangeObservable: Observable<Vector3> = new Observable<Vector3>();

  set Mesh(value: AbstractMesh) {
    let lastMesh = this.mesh;
    this.mesh = value;
    if (value == null) {
      this.NowType = TransformUIType.Hide;
    } else {
      //if (lastMesh == null) {
      this.NowType = GizmoTool.currentGizmoType;// TransformUIType.Position;
      //}
    }
  }

  get Mesh() {
    return this.mesh;
  }

  set NowType(value: TransformUIType) {
    this.nowType = value;
    // console.log("NowType====" + value);
    this.OnTypeChangeObservable.notifyObservers(this.nowType);
  }

  get OnTypeChangeObservable(): Observable<TransformUIType> {
    if (this.onTypeChangeObservable == null) {
      this.onTypeChangeObservable = new Observable<TransformUIType>();
    }
    return this.onTypeChangeObservable;
  }
}