Method digest

packages/core/wgc/crypto/SubtleCrypto.ts:183–257

(algorithm: 'SHA-1' | 'SHA-256' | 'SHA-384' | 'SHA-512', data: TypedArray | ArrayBuffer)

export class SubtleCrypto {
	digest(algorithm: 'SHA-1' | 'SHA-256' | 'SHA-384' | 'SHA-512', data: TypedArray | ArrayBuffer) {
		return new Promise((resolve, reject) => {
			let error: Error;
			let mode: number;
			switch (algorithm) {
				case 'SHA-1':
					mode = 0;
					break;
				case 'SHA-256':
					mode = 1;
					break;
				case 'SHA-384':
					mode = 2;
					break;
				case 'SHA-512':
					mode = 3;
					break;
				default:
					error = new Error('Operation is not supported');
					break;
			}
			if (error !== undefined) {
				reject(error);
				return;
			}

			if (data instanceof ArrayBuffer || data instanceof Uint8Array || data instanceof Uint8ClampedArray) {
				// noop
			} else if (data?.BYTES_PER_ELEMENT !== 1) {
				data = new Uint8Array(data.buffer, data.byteOffset);
			} else {
				reject(new TypeError('Argument 2 could not be converted to any of: ArrayBufferView, ArrayBuffer.'));
				return;
			}

			if (__ANDROID__) {
				//const instance = java.security.MessageDigest.getInstance(algorithm);

				const buffer = (<any>org).nativescript.winter_tc.Crypto.digest(mode, data);
				const ab = (<any>ArrayBuffer).from(buffer);

				if (!ab) {
					// todo throw failure
				}

				resolve(ab);

				/* instance.update(data as any);
                const digest = instance.digest();
    
                const ab = new ArrayBuffer(digest.length);
                (<any>org).nativescript.winter_tc.Utils.copyToBuffer(ab, digest);
    
                resolve(ab);

                */
			}