verdnatura-chat/app/lib/methods/helpers/media.ts

import { IShareAttachment } from '../../../definitions';

export const canUploadFile = ({
	file,
	allowList,
	maxFileSize,
	permissionToUploadFile
}: {
	file: IShareAttachment;
	allowList?: string;
	maxFileSize?: number;
	permissionToUploadFile: boolean;
}): { success: boolean; error?: string } => {
	if (!(file && file.path)) {
		return { success: true };
	}
	if (maxFileSize && maxFileSize > -1 && file.size > maxFileSize) {
		return { success: false, error: 'error-file-too-large' };
	}
	if (!permissionToUploadFile) {
		return { success: false, error: 'error-not-permission-to-upload-file' };
	}
	// if white list is empty, all media types are enabled
	if (!allowList || allowList === '*') {
		return { success: true };
	}
	const allowedMime = allowList.split(',');
	if (allowedMime.includes(file.mime!)) {
		return { success: true };
	}
	const wildCardGlob = '/*';
	const wildCards = allowedMime.filter((item: string) => item.indexOf(wildCardGlob) > 0);
	if (file.mime && wildCards.includes(file.mime.replace(/(\/.*)$/, wildCardGlob))) {
		return { success: true };
	}
	return { success: false, error: 'error-invalid-file-type' };
};