requestLongerTimeout(8);

const CHROME_BASE = "chrome://mochitests/content/browser/browser/base/content/test/general/";
Services.scriptloader.loadSubScript(CHROME_BASE + "head.js", this);
/* import-globals-from ../../../../../browser/base/content/test/general/head.js */

async function testOnWindow(private, expectedReferrer, rp) {
  info("Creating a new " + (private ? "private" : "normal") + " window");
  let win = OpenBrowserWindow({private});
  await TestUtils.topicObserved("browser-delayed-startup-finished", subject => subject == win).then(() => win);
  await BrowserTestUtils.firstBrowserLoaded(win);

  let browser = win.gBrowser;
  let tab = browser.selectedTab;
  let b = browser.getBrowserForTab(tab);
  await promiseTabLoadEvent(tab, TEST_TOP_PAGE);

  info("Loading tracking scripts and tracking images");
  await ContentTask.spawn(b, {rp}, async function({rp}) {
    {
      let src = content.document.createElement("script");
      let p = new content.Promise(resolve => { src.onload = resolve; });
      content.document.body.appendChild(src);
      if (rp) {
        src.referrerPolicy = rp;
      }
      src.src = "https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/referrer.sjs?what=script";
      await p;
    }

    {
      let img = content.document.createElement("img");
      let p = new content.Promise(resolve => { img.onload = resolve; });
      content.document.body.appendChild(img);
      if (rp) {
        img.referrerPolicy = rp;
      }
      img.src = "https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/referrer.sjs?what=image";
      await p;
    }
  });

  await fetch("https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/referrer.sjs?result&what=script")
    .then(r => r.text())
    .then(text => {
      is(text, expectedReferrer, "We sent the correct Referer header");
    });

  await fetch("https://tracking.example.org/browser/toolkit/components/antitracking/test/browser/referrer.sjs?result&what=image")
    .then(r => r.text())
    .then(text => {
      is(text, expectedReferrer, "We sent the correct Referer header");
    });

  await BrowserTestUtils.closeWindow(win);
}

function pn(name, private) {
  return private ? (name + ".pbmode") : name;
}

async function testOnNoReferrer(private) {
  // no-referrer pref when no-referrer is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, "", "no-referrer");

  // strict-origin-when-cross-origin pref when no-referrer is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, "", "no-referrer");

  // same-origin pref when no-referrer is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, "", "no-referrer");

  // no-referrer pref when no-referrer is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, "", "no-referrer");
}

async function testOnSameOrigin(private) {
  // same-origin pref when same-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, "", "same-origin");

  // strict-origin-when-cross-origin pref when same-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, "", "same-origin");

  // same-origin pref when same-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, "", "same-origin");

  // same-origin pref when same-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, "", "same-origin");
}

async function testOnNoReferrerWhenDowngrade(private) {
  // no-referrer-when-downgrade pref when no-referrer-when-downgrade is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, TEST_TOP_PAGE, "no-referrer-when-downgrade");

  // strict-origin-when-cross-origin pref when no-referrer-when-downgrade is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, TEST_TOP_PAGE, "no-referrer-when-downgrade");

  // same-origin pref when no-referrer-when-downgrade is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, TEST_TOP_PAGE, "no-referrer-when-downgrade");

  // no-referrer pref when no-referrer-when-downgrade is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, TEST_TOP_PAGE, "no-referrer-when-downgrade");
}

async function testOnOrigin(private) {
  // origin pref when origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, TEST_DOMAIN, "origin");

  // strict-origin pref when origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, TEST_DOMAIN, "origin");

  // same-origin pref when origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, TEST_DOMAIN, "origin");

  // no-referrer pref when origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, TEST_DOMAIN, "origin");
}

async function testOnStrictOrigin(private) {
  // strict-origin pref when strict-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin");

  // strict-origin pref when strict-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin");

  // same-origin pref when strict-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin");

  // no-referrer pref when strict-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin");
}

async function testOnOriginWhenCrossOrigin(private) {
  // origin-when-cross-origin pref when origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, TEST_DOMAIN, "origin-when-cross-origin");

  // strict-origin-when-cross-origin pref when origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, TEST_DOMAIN, "origin-when-cross-origin");

  // same-origin pref when origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, TEST_DOMAIN, "origin-when-cross-origin");

  // no-referrer pref when origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, TEST_DOMAIN, "origin-when-cross-origin");
}

async function testOnStrictOriginWhenCrossOrigin(private) {
  // origin-when-cross-origin pref when strict-origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin-when-cross-origin");

  // strict-origin-when-cross-origin pref when strict-origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin-when-cross-origin");

  // same-origin pref when strict-origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin-when-cross-origin");

  // no-referrer pref when strict-origin-when-cross-origin is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, TEST_DOMAIN, "strict-origin-when-cross-origin");
}

async function testOnUnsafeUrl(private) {
  // no-referrer-when-downgrade pref when unsafe-url is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 3]]});
  await testOnWindow(private, TEST_TOP_PAGE, "unsafe-url");

  // strict-origin-when-cross-origin pref when unsafe-url is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 2]]});
  await testOnWindow(private, TEST_TOP_PAGE, "unsafe-url");

  // same-origin pref when unsafe-url is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 1]]});
  await testOnWindow(private, TEST_TOP_PAGE, "unsafe-url");

  // no-referrer pref when unsafe-url is forced
  await SpecialPowers.pushPrefEnv({"set":
    [[pn("network.http.referer.defaultPolicy.trackers", private), 0]]});
  await testOnWindow(private, TEST_TOP_PAGE, "unsafe-url");
}

add_task(async function() {
  info("Starting referrer default policy test");

  await SpecialPowers.flushPrefEnv();
  await SpecialPowers.pushPrefEnv({"set": [
    ["browser.contentblocking.allowlist.annotations.enabled", true],
    ["browser.contentblocking.allowlist.storage.enabled", true],
    ["network.cookie.cookieBehavior", Ci.nsICookieService.BEHAVIOR_REJECT_TRACKER],
    ["privacy.trackingprotection.enabled", false],
    ["privacy.trackingprotection.pbmode.enabled", false],
    ["privacy.trackingprotection.annotate_channels", true],
  ]});

  await UrlClassifierTestUtils.addTestTrackers();

  // no-referrer-when-downgrade
  await SpecialPowers.pushPrefEnv({"set":
    [["network.http.referer.defaultPolicy.trackers", 3]]});
  await testOnWindow(false, TEST_TOP_PAGE, null);

  // strict-origin-when-cross-origin
  await SpecialPowers.pushPrefEnv({"set":
    [["network.http.referer.defaultPolicy.trackers", 2]]});
  await testOnWindow(false, TEST_DOMAIN, null);

  // same-origin
  await SpecialPowers.pushPrefEnv({"set":
    [["network.http.referer.defaultPolicy.trackers", 1]]});
  await testOnWindow(false, "", null);

  // no-referrer
  await SpecialPowers.pushPrefEnv({"set":
    [["network.http.referer.defaultPolicy.trackers", 0]]});
  await testOnWindow(false, "", null);

  // override with no-referrer
  await testOnNoReferrer(false);

  // override with same-origin
  await testOnSameOrigin(false);

  // override with no-referrer-when-downgrade
  await testOnNoReferrerWhenDowngrade(false);

  // override with origin
  await testOnOrigin(false);

  // override with strict-origin
  await testOnStrictOrigin(false);

  // override with origin-when-cross-origin
  await testOnOriginWhenCrossOrigin(false);

  // override with strict-origin-when-cross-origin
  await testOnStrictOriginWhenCrossOrigin(false);

  // override with unsafe-url
  await testOnUnsafeUrl(false);

  // Reset the pref.
  Services.prefs.clearUserPref("network.http.referer.defaultPolicy.trackers");

  // no-referrer-when-downgrade
  await SpecialPowers.pushPrefEnv({"set": [
    // Set both prefs, because if we only set the trackers pref, then the PB
    // mode default policy pref (2) would apply!
    ["network.http.referer.defaultPolicy.pbmode", 3],
    ["network.http.referer.defaultPolicy.trackers.pbmode", 3],
  ]});
  await testOnWindow(true, TEST_TOP_PAGE, null);

  // strict-origin-when-cross-origin
  await SpecialPowers.pushPrefEnv({"set":
    [["network.http.referer.defaultPolicy.trackers.pbmode", 2]]});
  await testOnWindow(true, TEST_DOMAIN, null);

  // same-origin
  await SpecialPowers.pushPrefEnv({"set":
    [["network.http.referer.defaultPolicy.trackers.pbmode", 1]]});
  await testOnWindow(true, "", null);

  // no-referrer
  await SpecialPowers.pushPrefEnv({"set":
    [["network.http.referer.defaultPolicy.trackers.pbmode", 0]]});
  await testOnWindow(true, "", null);

  // override with no-referrer
  await testOnNoReferrer(true);

  // override with same-origin
  await testOnSameOrigin(true);

  // override with no-referrer-when-downgrade
  await testOnNoReferrerWhenDowngrade(true);

  // override with origin
  await testOnOrigin(true);

  // override with strict-origin
  await testOnStrictOrigin(true);

  // override with origin-when-cross-origin
  await testOnOriginWhenCrossOrigin(true);

  // override with strict-origin-when-cross-origin
  await testOnStrictOriginWhenCrossOrigin(true);

  // override with unsafe-url
  await testOnUnsafeUrl(true);

  // Reset the pref.
  Services.prefs.clearUserPref("network.http.referer.defaultPolicy.trackers.pbmode");
});

add_task(async function() {
  info("Cleaning up.");
  await new Promise(resolve => {
    Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value => resolve());
  });
});