62 lines
1.7 KiB
TypeScript
62 lines
1.7 KiB
TypeScript
import { Api as GramJs } from '../../../lib/gramjs';
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import { strippedPhotoToJpg } from '../../../lib/gramjs/Utils';
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import { ApiThumbnail } from '../../types';
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import { bytesToDataUri } from './helpers';
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import { pathBytesToSvg } from './pathBytesToSvg';
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const DEFAULT_THUMB_SIZE = { w: 100, h: 100 };
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export function buildApiThumbnailFromStripped(
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sizes?: GramJs.TypePhotoSize[], mimeType?: string,
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): ApiThumbnail | undefined {
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if (!sizes || !sizes.length) {
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return undefined;
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}
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const thumb = sizes.find((s: any): s is GramJs.PhotoStrippedSize => s instanceof GramJs.PhotoStrippedSize);
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if (!thumb) {
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return undefined;
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}
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const realSizes = sizes.filter((s): s is GramJs.PhotoSize => s instanceof GramJs.PhotoSize);
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const { w, h } = realSizes && realSizes.length ? realSizes[realSizes.length - 1] : DEFAULT_THUMB_SIZE;
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const { bytes } = thumb;
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const dataUri = bytesToDataUri(
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!mimeType || mimeType === 'image/jpeg' ? strippedPhotoToJpg(bytes) : bytes,
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undefined,
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mimeType,
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);
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return {
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dataUri,
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width: w,
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height: h,
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};
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}
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export function buildApiThumbnailFromCached(photoSize: GramJs.PhotoCachedSize): ApiThumbnail | undefined {
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const { w, h, bytes } = photoSize;
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const dataUri = bytesToDataUri(bytes, undefined, 'image/webp');
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return {
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dataUri,
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width: w,
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height: h,
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};
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}
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export function buildApiThumbnailFromPath(
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photoSize: GramJs.PhotoPathSize,
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sizeAttribute: GramJs.DocumentAttributeImageSize,
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): ApiThumbnail | undefined {
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const { w, h } = sizeAttribute;
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const dataUri = `data:image/svg+xml;utf8,${pathBytesToSvg(photoSize.bytes, w, h)}`;
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return {
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dataUri,
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width: w,
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height: h,
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};
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}
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