/**
## reqHost
Exports the reqHost utility method.
@requires module:/utils/logger
@module /utils/reqHost
*/
const logger = require('./logger');
/**
@function reqHost
@description
The reqHost utility method inspects the HTTP req[quest] object header to return the host as a string.
The host value can be logged with the `reqHost` logger key.
@param {Object} req HTTP request.
@returns {string} host
*/
module.exports = function reqHost(req) {
let host;
if (req.headers.host.startsWith('localhost')) {
host = `http://${req.headers.host}${process.env.DIR}`;
} else if (req.headers.host) {
host = `https://${process.env.ALIAS || req.headers.host}${process.env.DIR}`;
} else if (req.headers.referer) {
host = new URL(req.headers.referer).origin;
}
logger(host, 'reqhost');
return host;
};