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import { CanvasRenderingContext2D } from "./context2d.ts";import ffi, { cstr, getBuffer } from "./ffi.ts";
const {  sk_svg_destroy,  sk_svg_get_buffer,  sk_svg_new,  sk_svg_get_context,  sk_svg_write_file,  sk_data_free,} = ffi;
const SVG_FINALIZER = new FinalizationRegistry((ptr: Deno.PointerValue) => {  sk_svg_destroy(ptr);});
const SK_DATA_FINALIZER = new FinalizationRegistry(  (ptr: Deno.PointerValue) => {    sk_data_free(ptr);  },);
const OUT_SIZE = new Uint32Array(1);const OUT_SIZE_PTR = new Uint8Array(OUT_SIZE.buffer);const OUT_DATA = new BigUint64Array(1);const OUT_DATA_PTR = new Uint8Array(OUT_DATA.buffer);
export class SvgRenderingContext2D extends CanvasRenderingContext2D {  // @ts-expect-error  declare readonly canvas: SvgCanvas;
  constructor(canvas: SvgCanvas, ptr: Deno.PointerValue) {    super(canvas as any, ptr);  }}
export interface SvgCanvasOptions {  convertTextsToPaths?: boolean;  noPrettyXml?: boolean;  relativePathEncoding?: boolean;}
/** * A canvas that can be used to render SVG. */export class SvgCanvas {  #ptr: Deno.PointerValue;
  constructor(    public readonly width: number,    public readonly height: number,    options: SvgCanvasOptions = {},  ) {    this.#ptr = sk_svg_new(      width,      height,      0 | (options.convertTextsToPaths ? 1 : 0) |        (options.noPrettyXml ? 2 : 0) | (options.relativePathEncoding ? 4 : 0),    );    if (this.#ptr === 0) {      throw new Error("Failed to create SVG Canvas");    }    SVG_FINALIZER.register(this, this.#ptr);  }
  /** Obtain 2D context for drawing on SVG */  getContext() {    const ptr = sk_svg_get_context(this.#ptr);    if (ptr === 0) {      throw new Error("Failed to get SVG context");    }    return new SvgRenderingContext2D(this, ptr);  }
  /** Save SVG on file system */  save(path: string) {    if (!sk_svg_write_file(this.#ptr, cstr(path))) {      throw new Error("Failed to save SVG");    }  }
  /** Encode and return buffer containing SVG data */  encode() {    const skdata = sk_svg_get_buffer(this.#ptr, OUT_DATA_PTR, OUT_SIZE_PTR);    if (!skdata) {      throw new Error("Failed to encode SVG");    }    const size = OUT_SIZE[0];    const ptr = OUT_DATA[0];    const buffer = new Uint8Array(getBuffer(ptr, size));    SK_DATA_FINALIZER.register(buffer, skdata);    return buffer;  }
  /** Convert to SVG string */  toString() {    const skdata = sk_svg_get_buffer(this.#ptr, OUT_DATA_PTR, OUT_SIZE_PTR);    if (!skdata) {      throw new Error("Failed to encode SVG");    }    const size = OUT_SIZE[0];    const ptr = OUT_DATA[0];    const buffer = new Uint8Array(getBuffer(ptr, size));    const text = new TextDecoder().decode(buffer);    sk_data_free(skdata);    return text;  }}