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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 4x 3x 3x 3x 3x 2x 2x 2x 2x 2x 3x 1x 1x 1x 1x 1x 1x 3x 4x 4x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 4x 1x 1x | import sharp, { ResizeOptions } from 'sharp';
import { Container, Service } from 'typedi';
import {
IImageMetaDataProps,
IImageProcessingOutputProps,
IImageProcessingProps,
} from '@contracts/image';
import { ResultWithValue } from '@contracts/resultWithValue';
import { anyObject } from '@helpers/typescriptHacks';
@Service()
export class ImageProcessingService {
getMetaData = async (
props: IImageProcessingProps,
): Promise<ResultWithValue<IImageMetaDataProps>> => {
try {
const metadata = await sharp(props.input).metadata();
return {
isSuccess: true,
value: metadata,
errorMessage: '',
};
} catch (ex) {
return {
isSuccess: false,
errorMessage: `Image metadata failed, ${ex?.toString?.()}`,
value: anyObject,
};
}
};
resize = async (
props: IImageProcessingProps & {
output?: IImageProcessingOutputProps;
resize: ResizeOptions;
},
): Promise<ResultWithValue<Buffer>> => {
const { input, output, resize } = props;
let sharpTasks = sharp(input);
if (resize.fit == null) resize.fit = 'outside';
if (resize.position == null) resize.position = 'centre';
sharpTasks = sharpTasks.resize({ ...resize });
if (output?.outputType != null) {
sharpTasks = sharpTasks.toFormat(output.outputType);
}
try {
const result = await sharpTasks
.withExif({}) // remove exif and metadata
.withMetadata({})
.toBuffer();
return {
isSuccess: true,
value: result,
errorMessage: '',
};
} catch (ex) {
return {
isSuccess: false,
errorMessage: `Image resize failed, ${ex?.toString?.()}`,
value: anyObject,
};
}
};
}
export const getImageProcessingService = () => Container.get(ImageProcessingService);
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