import { HousePlannerCanvasHistory } from './history';
import { LayerObjectType } from './types';

export type Vec2 = [number, number];
export interface LineSegment {
  start?: Vec2;
  end: Vec2;
}

export interface BezierSegment extends LineSegment {
  startControl: Vec2;
  endControl: Vec2;
}

export interface LayerObject {
  id: number;
  databaseId?: number;
  name: string;
  visible: boolean;
  selected: boolean;
  type: LayerObjectType;
}

export interface Line extends LayerObject {
  segments: LineSegment[];
  width: number;
  color: string;
  render?: Path2D;
  lineCap?: CanvasLineCap;
  lineJoin?: CanvasLineJoin;
  closed?: boolean;
  lineDash?: number[];
}

export interface Layer {
  id: number;
  contents: LayerObject[];
  name: string;
  color: string;
  visible: boolean;
  active: boolean;
}

export interface History<T> {
  object: T;
  property: keyof T;
  value: unknown;
}

export interface UpdateEvent {
  event: string;
  object?: LayerObject;
}

export interface ToolEvent {
  primary: string;
  secondary?: unknown;
}

export interface RepositionEvent {
  position: Vec2;
  zoom: number;
}

export interface ICanvasToolMouseEvents {
  mouseDown(targetObject?: LayerObject): void;
  mouseMoved(mouse: Vec2, offset: Vec2, mouseAbsolute: Vec2): void;
  mouseUp(moved: boolean): void;
}

export interface ICanvasToolkit extends ICanvasToolMouseEvents {
  history: HousePlannerCanvasHistory;
  drawHighlights(): void;
  drawControls(): void;
  cleanUp(): void;
  onKeyDown(e: KeyboardEvent): void;
  onKeyUp(e: KeyboardEvent): void;
  getMousedObject(): LayerObject | null;
}

export interface ICanvasToolBase<U = undefined> extends ICanvasToolMouseEvents {
  name: string;
  subTool: U | undefined;
  drawHighlights(): void;
  drawControls(): void;
  enterPress(e: KeyboardEvent): void;
  escapePress(e: KeyboardEvent): void;
  setSubTool(subTool?: U): void;
  activate(): void;
  deactivate(): void;
  selectionDeleted(): void;
  selectionChanged(selection: LayerObject[]): void;
  emitEvent(e: CustomEvent): void;
  isToolCancelable(): boolean;
}