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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* BASE_PARAMS keys/values can be modified from outside this file
*/
export const BASE_PARAMS = {
utm_source: "activity-stream",
utm_campaign: "firstrun",
utm_medium: "referral",
};
/**
* Takes in a url as a string or URL object and returns a URL object with the
* utm_* parameters added to it. If a URL object is passed in, the paraemeters
* are added to it (the return value can be ignored in that case as it's the
* same object).
*/
export function addUtmParams(url, utmTerm) {
let returnUrl = url;
if (typeof returnUrl === "string") {
returnUrl = new URL(url);
}
for (let [key, value] of Object.entries(BASE_PARAMS)) {
if (!returnUrl.searchParams.has(key)) {
returnUrl.searchParams.append(key, value);
}
}
returnUrl.searchParams.append("utm_term", utmTerm);
return returnUrl;
}
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