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refactor: Simplify supportsMediaTypeConversion arguments.

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This commit is contained in:
Ruben Verborgh
2021-01-05 00:43:25 +01:00
parent 8cd3f7d2e5
commit 0bd73115cc
4 changed files with 29 additions and 65 deletions
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26
src/storage/conversion/ConversionUtil.ts
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@@ -1,9 +1,7 @@
import type { ValuePreferences } from '../../ldp/representation/RepresentationPreferences';
import { INTERNAL_ALL } from '../../util/ContentTypes';
import { BadRequestHttpError } from '../../util/errors/BadRequestHttpError';
import { InternalServerError } from '../../util/errors/InternalServerError';
import { NotImplementedHttpError } from '../../util/errors/NotImplementedHttpError';
import type { RepresentationConverterArgs } from './RepresentationConverter';
/**
* Filters media types based on the given preferences.
@@ -91,20 +89,20 @@ export const matchesMediaType = (mediaA: string, mediaB: string): boolean => {
* - Checks if the input type is supported by the parser.
* - Checks if the parser can produce one of the preferred output types.
* Throws an error with details if conversion is not possible.
* @param request - Incoming arguments.
* @param supportedIn - Media types that can be parsed by the converter.
* @param supportedOut - Media types that can be produced by the converter.
* @param inputType - Actual input type.
* @param outputTypes - Acceptable output types.
* @param convertorIn - Media types that can be parsed by the converter.
* @param convertorOut - Media types that can be produced by the converter.
*/
export const supportsConversion = (request: RepresentationConverterArgs, supportedIn: ValuePreferences,
supportedOut: ValuePreferences): void => {
const inType = request.representation.metadata.contentType;
if (!inType) {
throw new BadRequestHttpError('No content type indicated on request.');
}
if (!Object.keys(supportedIn).some((type): boolean => matchesMediaType(inType, type)) ||
matchingMediaTypes(request.preferences.type, supportedOut).length === 0) {
export const supportsMediaTypeConversion = (
inputType = 'unknown', outputTypes: ValuePreferences = {},
convertorIn: ValuePreferences = {}, convertorOut: ValuePreferences = {},
): void => {
if (!Object.keys(convertorIn).some((type): boolean => matchesMediaType(inputType, type)) ||
matchingMediaTypes(outputTypes, convertorOut).length === 0) {
throw new NotImplementedHttpError(
`Can only convert from ${Object.keys(supportedIn)} to ${Object.keys(supportedOut)}.`,
`Cannot convert from ${inputType} to ${Object.keys(outputTypes)
}, only from ${Object.keys(convertorIn)} to ${Object.keys(convertorOut)}.`,
);
}
};