import { RestoredDataState } from "@zsviczian/excalidraw/types/data/restore";
import { ImportedDataState } from "@zsviczian/excalidraw/types/data/types";
import { BoundingBox } from "@zsviczian/excalidraw/types/element/bounds";
import { ExcalidrawBindableElement, ExcalidrawElement, ExcalidrawTextElement, FontFamilyValues, FontString, NonDeleted, Theme } from "@zsviczian/excalidraw/types/element/types";
import { AppState, BinaryFiles, ExportOpts, Point, Zoom } from "@zsviczian/excalidraw/types/types";
import { Mutable } from "@zsviczian/excalidraw/types/utility-types";

type EmbeddedLink =
  | ({
      aspectRatio: { w: number; h: number };
      warning?: string;
    } & (
      | { type: "video" | "generic"; link: string }
      | { type: "document"; srcdoc: (theme: Theme) => string }
    ))
  | null;

declare namespace ExcalidrawLib {
  type ElementUpdate<TElement extends ExcalidrawElement> = Omit<
    Partial<TElement>,
    "id" | "version" | "versionNonce"
  >;

  type ExportOpts = {
    elements: readonly NonDeleted<ExcalidrawElement>[];
    appState?: Partial<Omit<AppState, "offsetTop" | "offsetLeft">>;
    files: BinaryFiles | null;
    maxWidthOrHeight?: number;
    getDimensions?: (
      width: number,
      height: number,
    ) => { width: number; height: number; scale?: number };
  };

  function restore(
    data: Pick<ImportedDataState, "appState" | "elements" | "files"> | null,
    localAppState: Partial<AppState> | null | undefined,
    localElements: readonly ExcalidrawElement[] | null | undefined,
    elementsConfig?: { refreshDimensions?: boolean; repairBindings?: boolean },
  ): RestoredDataState;

  function exportToSvg(opts: Omit<ExportOpts, "getDimensions"> & {
    elements: ExcalidrawElement[];
    appState?: AppState;
    files?: any;
    exportPadding?: number;
    renderEmbeddables?: boolean;
  }): Promise<SVGSVGElement>;

  function sceneCoordsToViewportCoords(
    sceneCoords: { sceneX: number; sceneY: number },
    viewParams: {
      zoom: Zoom;
      offsetLeft: number;
      offsetTop: number;
      scrollX: number;
      scrollY: number;
    },
  ): { x: number; y: number };

  function viewportCoordsToSceneCoords(
    viewportCoords: { clientX: number; clientY: number },
    viewParams: {
      zoom: Zoom;
      offsetLeft: number;
      offsetTop: number;
      scrollX: number;
      scrollY: number;
    },
  ): { x: number; y: number };

  function determineFocusDistance(
    element: ExcalidrawBindableElement,
    a: Point,
    b: Point,
  ): number;

  function intersectElementWithLine(
    element: ExcalidrawBindableElement,
    a: Point,
    b: Point,
    gap?: number,
  ): Point[];

  function getCommonBoundingBox(
    elements: ExcalidrawElement[] | readonly NonDeleted<ExcalidrawElement>[],
  ): BoundingBox;

  function getMaximumGroups(
    elements: ExcalidrawElement[],
  ): ExcalidrawElement[][];

  function measureText(
    text: string,
    font: FontString,
    lineHeight: number,
  ): { width: number; height: number; baseline: number };

  function getDefaultLineHeight(fontFamily: FontFamilyValues): number;

  function wrapText(text: string, font: FontString, maxWidth: number): string;

  function getFontString({
    fontSize,
    fontFamily,
  }: {
    fontSize: number;
    fontFamily: FontFamilyValues;
  }): FontString;

  function getBoundTextMaxWidth(container: ExcalidrawElement): number;

  function exportToBlob(
    opts: ExportOpts & {
      mimeType?: string;
      quality?: number;
      exportPadding?: number;
    },
  ): Promise<Blob>;

  function mutateElement<TElement extends Mutable<ExcalidrawElement>>(
    element: TElement,
    updates: ElementUpdate<TElement>,
    informMutation?: boolean,
  ): TElement;  

  function getEmbedLink (link: string | null | undefined): EmbeddedLink;
}