"use strict";

const WINDOWS_CHROME_UA =
  "Mozilla/5.0 (Windows NT 10.0; Win64; x64) " +
  "AppleWebKit/537.36 (KHTML, like Gecko) " +
  "Chrome/140.0.0.0 Safari/537.36";

browser.webRequest.onBeforeSendHeaders.addListener(
  (details) => {
    const requestHeaders = details.requestHeaders ?? [];
    let foundUserAgent = false;

    for (const header of requestHeaders) {
      if (header.name.toLowerCase() === "user-agent") {
        header.value = WINDOWS_CHROME_UA;
        foundUserAgent = true;
        break;
      }
    }

    if (!foundUserAgent) {
      requestHeaders.push({
        name: "User-Agent",
        value: WINDOWS_CHROME_UA
      });
    }

    return { requestHeaders };
  },
  {
    urls: [
      "*://netflix.com/*",
      "*://*.netflix.com/*"
    ]
  },
  [
    "blocking",
    "requestHeaders"
  ]
);