workadventure/pusher/src/Server/server/formdata.ts

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import { createWriteStream } from 'fs';
import { join, dirname } from 'path';
import Busboy from 'busboy';
import mkdirp from 'mkdirp';
function formData(
contType: string,
options: busboy.BusboyConfig & {
abortOnLimit?: boolean;
tmpDir?: string;
onFile?: (
fieldname: string,
file: NodeJS.ReadableStream,
filename: string,
encoding: string,
mimetype: string
) => string;
onField?: (fieldname: string, value: any) => void; // eslint-disable-line @typescript-eslint/no-explicit-any
filename?: (oldName: string) => string;
} = {}
) {
console.log('Enter form data');
options.headers = {
'content-type': contType
};
return new Promise((resolve, reject) => {
const busb = new Busboy(options);
const ret = {};
this.bodyStream().pipe(busb);
busb.on('limit', () => {
if (options.abortOnLimit) {
reject(Error('limit'));
}
});
busb.on('file', function(fieldname, file, filename, encoding, mimetype) {
const value: { filePath: string|undefined, filename: string, encoding:string, mimetype: string } = {
filename,
encoding,
mimetype,
filePath: undefined
};
if (typeof options.tmpDir === 'string') {
if (typeof options.filename === 'function') filename = options.filename(filename);
const fileToSave = join(options.tmpDir, filename);
mkdirp(dirname(fileToSave));
file.pipe(createWriteStream(fileToSave));
value.filePath = fileToSave;
}
if (typeof options.onFile === 'function') {
value.filePath =
options.onFile(fieldname, file, filename, encoding, mimetype) || value.filePath;
}
setRetValue(ret, fieldname, value);
});
busb.on('field', function(fieldname, value) {
if (typeof options.onField === 'function') options.onField(fieldname, value);
setRetValue(ret, fieldname, value);
});
busb.on('finish', function() {
resolve(ret);
});
busb.on('error', reject);
});
}
function setRetValue(
ret: { [x: string]: any }, // eslint-disable-line @typescript-eslint/no-explicit-any
fieldname: string,
value: { filename: string; encoding: string; mimetype: string; filePath?: string } | any // eslint-disable-line @typescript-eslint/no-explicit-any
) {
if (fieldname.endsWith('[]')) {
fieldname = fieldname.slice(0, fieldname.length - 2);
if (Array.isArray(ret[fieldname])) {
ret[fieldname].push(value);
} else {
ret[fieldname] = [value];
}
} else {
if (Array.isArray(ret[fieldname])) {
ret[fieldname].push(value);
} else if (ret[fieldname]) {
ret[fieldname] = [ret[fieldname], value];
} else {
ret[fieldname] = value;
}
}
}
export default formData;