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import { Base64 } from "https://deno.land/x/bb64/mod.ts";import { isURL } from "https://deno.land/x/is_url/mod.ts";interface TinifyConfig {  api_key: string;  storagePath?: string;}const { writeFile } = Deno;class Tinify {  // AOI Key Declarion  private API_KEY: string;
  // Storage path  private storagePath: string = "";
  // API endpint  private apiEndpoint = "https://api.tinify.com/shrink";
  // oject constructor  constructor(config: TinifyConfig) {    this.API_KEY = config.api_key;    if (config.storagePath) {      this.storagePath = config.storagePath;    }  }
  /**     * genreate Authentication string for Basic scheme from api key     * @returns Base64 string     */  private authString() {    return Base64.fromString(`api:${this.API_KEY}`).toString();  }
  /**     * send the image to tinify API endpoint     * @param requestInit RequestInit     * @returns json     */  private async compressImageRequest(requestInit: RequestInit) {    const response = await fetch(this.apiEndpoint, {      method: "POST",      ...requestInit,    });
    const jsonReponse = await response.json()
    // throw Unauthorized Error whene Credentials are invalid. or success response    return response.ok ?  Promise.resolve(jsonReponse) : Promise.reject(`${jsonReponse.error}: ${jsonReponse.message}`)  }
  /**     * get buffer image and return Uint8Array Encode     * @param bufferImage ArrayBuffer     * @returns Uint8Array     */  private bufferImageToUint8Array(bufferImage: ArrayBuffer) {    return new Uint8Array(bufferImage);  }
  // get the image as arrayBuffer from URL  private async getImageFromURL(imageURL: string) {    const response = await fetch(imageURL);    return response.arrayBuffer();  }
  public async compress(imageSource: Uint8Array | string) {    let response: any;    if (isURL(imageSource)) {      response = await this.compressImageRequest({        headers: {          "Authorization": `Basic ${this.authString()}`,          "Content-Type": "application/json",        },        body: JSON.stringify({          "source": {            "url": imageSource,          },        }),      });    } else {      response = await this.compressImageRequest({        headers: {          "Authorization": `Basic ${this.authString()}`,        },        body: imageSource,      });    }
    // get beffer compressed image from tinify API    const bufferCompressedImage: any = await this.getImageFromURL(      (await response).output.url,    );
    return {      // seve the compersed image as file to the server      saveTo: async (fileName: string, storagePath?: string) => {        // create new image        await writeFile(          `${storagePath ? storagePath : this.storagePath}${fileName}`,          this.bufferImageToUint8Array(bufferCompressedImage),        );
        return {          ...await response,          compressedImagePath: `${            storagePath ? storagePath : this.storagePath          }${fileName}`,        };      },
      /**      * convert the compresed image to base64 stribng      */      toBase64: async () => {          const base64Image = Base64.fromUint8Array(            this.bufferImageToUint8Array(bufferCompressedImage),          ).toString()        return {            ...await response,            base64: base64Image,          };
      }    };  }}
export { Tinify };