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// @flow
import uuidv4 from 'uuid/v4';
import fs from 'fs';
import type { FileUpload, EntityTypes } from 'shared/types';
const STORAGE_DIR = 'public/uploads';
const READ_WRITE_MODE = 0o777;
const dirExists = (path: string): Promise<boolean> =>
new Promise(res => fs.access(path, fs.constants.F_OK, err => res(!!!err)));
const createUploadsDir = (path: string): Promise<void> =>
new Promise(res =>
fs.mkdir(path, READ_WRITE_MODE, err => {
if (err) throw new Error(err);
res();
})
);
export const uploadImage = async (
file: FileUpload,
entity: EntityTypes,
id: string
): Promise<string> => {
const result = await file;
if (!(await dirExists(STORAGE_DIR))) {
await createUploadsDir(STORAGE_DIR);
}
return new Promise(res => {
const filePath = `${uuidv4()}-${entity}-${id}`;
const { stream } = result;
stream.pipe(fs.createWriteStream(`${STORAGE_DIR}/${filePath}`));
stream.on('end', () => {
res(encodeURI(`/uploads/${filePath}`));
});
});
};
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