import { objectAssign } from '../utils/lang/objectAssign';

import { ISettings } from '../types';

const FORBIDDEN_HEADERS = new Set([

'splitsdkclientkey',

'splitsdkversion',

'splitsdkmachineip',

'splitsdkmachinename',

'splitsdkimpressionsmode',

'host',

'referrer',

'content-type',

'content-length',

'content-encoding',

'accept',

'keep-alive',

'x-fastly-debug'

]);

export function decorateHeaders(settings: ISettings, headers: Record<string, string>) {

if (settings.sync.requestOptions?.getHeaderOverrides) {

try {

const headerOverrides = settings.sync.requestOptions.getHeaderOverrides({ headers: objectAssign({}, headers) });

Object.keys(headerOverrides)

.filter(key => !FORBIDDEN_HEADERS.has(key.toLowerCase()))

.forEach(key => headers[key] = headerOverrides[key]);

} catch (e) {

settings.log.error('Problem adding custom headers to request decorator: ' + e);

}

}

return headers;

}

export function removeNonISO88591(input: string) {

// eslint-disable-next-line no-control-regex

return input.replace(/[^\x00-\xFF]/g, '');

}