import Konva from "konva";
import { IMarkupLine, LineType } from "../../IMarkupLine";
import { IMarkupColorable } from "../../IMarkupColorable";

const LineTypeSpecs = new Map<LineType, number[]>([
  [LineType.Solid, []],
  [LineType.Dot, [30, 30, 0.001, 30]],
  [LineType.Dash, [30, 30]],
]);

export class KonvaLine implements IMarkupLine, IMarkupColorable {
  private _ref: Konva.Line;

  constructor(
    params: { points: { x: number; y: number }[]; color: string; type: LineType; width: number; id?: string },
    ref = null
  ) {
    if (ref) {
      this._ref = ref;
      return;
    }

    if (!params.points) return;

    const konvaPoints = [];
    params.points.forEach((point) => konvaPoints.push(point.x, point.y));

    this._ref = new Konva.Line({
      stroke: params.color ?? "#ff0000",
      strokeWidth: params.width ?? 4,
      globalCompositeOperation: "source-over",
      lineCap: "round",
      lineJoin: "round",
      points: konvaPoints,
      draggable: true,
      strokeScaleEnabled: false,
      dash: LineTypeSpecs.get(params.type) || [],
    });

    this._ref.id(this._ref._id.toString());
  }

  ref() {
    return this._ref;
  }

  id(): string {
    return this._ref.id();
  }

  enableMouseEditing(value: boolean) {
    this._ref.draggable(value);
  }

  type(): string {
    return "line";
  }

  getColor(): string {
    return this._ref.stroke();
  }

  setColor(hex: string) {
    this._ref.stroke(hex);
  }

  getRotation(): number {
    return this._ref.rotation();
  }

  setRotation(degrees: number): void {
    this._ref.rotation(degrees);
  }

  getZIndex(): number {
    return this._ref.zIndex();
  }

  setZIndex(zIndex: number): void {
    this._ref.zIndex(zIndex);
  }

  delete() {
    this._ref.destroy();
    this._ref = null;
  }

  getPoints(): number[] {
    return this._ref.points();
  }

  setLineWidth(size: number) {
    this._ref.strokeWidth(size);
  }

  getLineWidth(): number {
    return this._ref.strokeWidth();
  }

  getLineType(): string {
    const typeSpecs = this._ref.dash() || [];
    let type = "solid";
    switch (typeSpecs) {
      case LineTypeSpecs.get(LineType.Dot):
        type = "dot";
        break;
      case LineTypeSpecs.get(LineType.Dash):
        type = "dash";
        break;
    }
    return type;
  }

  setLineType(type: string) {
    const lineType = LineType[type];
    if (lineType) {
      const specs = LineTypeSpecs.get(lineType);
      if (specs) this._ref.dash(specs);
    }
  }

  addPoints(points: [{ x: number; y: number }]) {
    let newPoints = this._ref.points();
    points.forEach((point) => {
      newPoints = newPoints.concat([point.x, point.y]);
    });

    this._ref.points(newPoints);
  }
}