// These tables share the same updateURL.
const TEST_TABLE_DATA_LIST = [
  // 0:
  {
    tableName: "test-listmanager0-digest256",
    providerName: "google",
    updateUrl: "http://localhost:4444/safebrowsing/update",
    gethashUrl: "http://localhost:4444/safebrowsing/gethash0",
  },

  // 1:
  {
    tableName: "test-listmanager1-digest256",
    providerName: "google",
    updateUrl: "http://localhost:4444/safebrowsing/update",
    gethashUrl: "http://localhost:4444/safebrowsing/gethash1",
  },

  // 2.
  {
    tableName: "test-listmanager2-digest256",
    providerName: "google",
    updateUrl: "http://localhost:4444/safebrowsing/update",
    gethashUrl: "http://localhost:4444/safebrowsing/gethash2",
  },
];

// These tables have a different update URL (for v4).
const TEST_TABLE_DATA_V4 = {
  tableName: "test-phish-proto",
  providerName: "google4",
  updateUrl: "http://localhost:5555/safebrowsing/update?",
  gethashUrl: "http://localhost:5555/safebrowsing/gethash-v4",
};
const TEST_TABLE_DATA_V4_DISABLED = {
  tableName: "test-unwanted-proto",
  providerName: "google4",
  updateUrl: "http://localhost:5555/safebrowsing/update?",
  gethashUrl: "http://localhost:5555/safebrowsing/gethash-v4",
};

const PREF_NEXTUPDATETIME =
  "browser.safebrowsing.provider.google.nextupdatetime";
const PREF_NEXTUPDATETIME_V4 =
  "browser.safebrowsing.provider.google4.nextupdatetime";

let gListManager = Cc["@mozilla.org/url-classifier/listmanager;1"].getService(
  Ci.nsIUrlListManager
);

let gUrlUtils = Cc["@mozilla.org/url-classifier/utils;1"].getService(
  Ci.nsIUrlClassifierUtils
);

// Global test server for serving safebrowsing updates.
let gHttpServ = null;
let gUpdateResponse = "";
let gExpectedUpdateRequest = "";
let gExpectedQueryV4 = "";

// Handles request for TEST_TABLE_DATA_V4.
let gHttpServV4 = null;

// These two variables are used to synchronize the last two racing updates
// (in terms of "update URL") in test_update_all_tables().
let gUpdatedCntForTableData = 0; // For TEST_TABLE_DATA_LIST.
let gIsV4Updated = false; // For TEST_TABLE_DATA_V4.

const NEW_CLIENT_STATE = "sta\0te";
const CHECKSUM =
  "\x30\x67\xc7\x2c\x5e\x50\x1c\x31\xe3\xfe\xca\x73\xf0\x47\xdc\x34\x1a\x95\x63\x99\xec\x70\x5e\x0a\xee\x9e\xfb\x17\xa1\x55\x35\x78";

Services.prefs.setBoolPref("browser.safebrowsing.debug", true);

// The "\xFF\xFF" is to generate a base64 string with "/".
Services.prefs.setCharPref("browser.safebrowsing.id", "Firefox\xFF\xFF");

// Register tables.
TEST_TABLE_DATA_LIST.forEach(function (t) {
  gListManager.registerTable(
    t.tableName,
    t.providerName,
    t.updateUrl,
    t.gethashUrl
  );
});

gListManager.registerTable(
  TEST_TABLE_DATA_V4.tableName,
  TEST_TABLE_DATA_V4.providerName,
  TEST_TABLE_DATA_V4.updateUrl,
  TEST_TABLE_DATA_V4.gethashUrl
);

// To test Bug 1302044.
gListManager.registerTable(
  TEST_TABLE_DATA_V4_DISABLED.tableName,
  TEST_TABLE_DATA_V4_DISABLED.providerName,
  TEST_TABLE_DATA_V4_DISABLED.updateUrl,
  TEST_TABLE_DATA_V4_DISABLED.gethashUrl
);

const SERVER_INVOLVED_TEST_CASE_LIST = [
  // - Do table0 update.
  // - Server would respond "a:5:32:32\n[DATA]".
  function test_update_table0() {
    disableAllUpdates();

    gListManager.enableUpdate(TEST_TABLE_DATA_LIST[0].tableName);
    gExpectedUpdateRequest = TEST_TABLE_DATA_LIST[0].tableName + ";\n";

    gUpdateResponse = "n:1000\ni:" + TEST_TABLE_DATA_LIST[0].tableName + "\n";
    gUpdateResponse += readFileToString("data/digest2.chunk");

    forceTableUpdate();
  },

  // - Do table0 update again. Since chunk 5 was added to table0 in the last
  //   update, the expected request contains "a:5".
  // - Server would respond "s;2-12\n[DATA]".
  function test_update_table0_with_existing_chunks() {
    disableAllUpdates();

    gListManager.enableUpdate(TEST_TABLE_DATA_LIST[0].tableName);
    gExpectedUpdateRequest = TEST_TABLE_DATA_LIST[0].tableName + ";a:5\n";

    gUpdateResponse = "n:1000\ni:" + TEST_TABLE_DATA_LIST[0].tableName + "\n";
    gUpdateResponse += readFileToString("data/digest1.chunk");

    forceTableUpdate();
  },

  // - Do all-table update.
  // - Server would respond no chunk control.
  //
  // Note that this test MUST be the last one in the array since we rely on
  // the number of sever-involved test case to synchronize the racing last
  // two udpates for different URL.
  function test_update_all_tables() {
    disableAllUpdates();

    // Enable all tables including TEST_TABLE_DATA_V4!
    TEST_TABLE_DATA_LIST.forEach(function (t) {
      gListManager.enableUpdate(t.tableName);
    });

    // We register two v4 tables but only enable one of them
    // to verify that the disabled tables are not updated.
    // See Bug 1302044.
    gListManager.enableUpdate(TEST_TABLE_DATA_V4.tableName);
    gListManager.disableUpdate(TEST_TABLE_DATA_V4_DISABLED.tableName);

    // Expected results for v2.
    gExpectedUpdateRequest =
      TEST_TABLE_DATA_LIST[0].tableName +
      ";a:5:s:2-12\n" +
      TEST_TABLE_DATA_LIST[1].tableName +
      ";\n" +
      TEST_TABLE_DATA_LIST[2].tableName +
      ";\n";
    gUpdateResponse = "n:1000\n";

    // We test the request against the query string since v4 request
    // would be appened to the query string. The request is generated
    // by protobuf API (binary) then encoded to base64 format.
    let requestV4 = gUrlUtils.makeUpdateRequestV4(
      [TEST_TABLE_DATA_V4.tableName],
      [""]
    );
    gExpectedQueryV4 = "&$req=" + requestV4;

    forceTableUpdate();
  },
];

SERVER_INVOLVED_TEST_CASE_LIST.forEach(t => add_test(t));

add_test(function test_partialUpdateV4() {
  disableAllUpdates();

  gListManager.enableUpdate(TEST_TABLE_DATA_V4.tableName);

  // Since the new client state has been responded and saved in
  // test_update_all_tables, this update request should send
  // a partial update to the server.
  let requestV4 = gUrlUtils.makeUpdateRequestV4(
    [TEST_TABLE_DATA_V4.tableName],
    [btoa(NEW_CLIENT_STATE)]
  );
  gExpectedQueryV4 = "&$req=" + requestV4;

  forceTableUpdate();
});

// Tests nsIUrlListManager.getGethashUrl.
add_test(function test_getGethashUrl() {
  TEST_TABLE_DATA_LIST.forEach(function (t) {
    equal(gListManager.getGethashUrl(t.tableName), t.gethashUrl);
  });
  equal(
    gListManager.getGethashUrl(TEST_TABLE_DATA_V4.tableName),
    TEST_TABLE_DATA_V4.gethashUrl
  );
  run_next_test();
});

function run_test() {
  // Setup primary testing server.
  gHttpServ = new HttpServer();
  gHttpServ.registerDirectory("/", do_get_cwd());

  gHttpServ.registerPathHandler(
    "/safebrowsing/update",
    function (request, response) {
      let body = NetUtil.readInputStreamToString(
        request.bodyInputStream,
        request.bodyInputStream.available()
      );

      // Verify if the request is as expected.
      equal(body, gExpectedUpdateRequest);

      // Respond the update which is controlled by the test case.
      response.setHeader(
        "Content-Type",
        "application/vnd.google.safebrowsing-update",
        false
      );
      response.setStatusLine(request.httpVersion, 200, "OK");
      response.bodyOutputStream.write(gUpdateResponse, gUpdateResponse.length);

      gUpdatedCntForTableData++;

      if (gUpdatedCntForTableData !== SERVER_INVOLVED_TEST_CASE_LIST.length) {
        // This is not the last test case so run the next once upon the
        // the update success.
        waitForUpdateSuccess(run_next_test);
        return;
      }

      if (gIsV4Updated) {
        run_next_test(); // All tests are done. Just finish.
        return;
      }

      info("Waiting for TEST_TABLE_DATA_V4 to be tested ...");
    }
  );

  gHttpServ.start(4444);

  // Setup v4 testing server for the different update URL.
  gHttpServV4 = new HttpServer();
  gHttpServV4.registerDirectory("/", do_get_cwd());

  gHttpServV4.registerPathHandler(
    "/safebrowsing/update",
    function (request, response) {
      // V4 update request body should be empty.
      equal(request.bodyInputStream.available(), 0);

      // Not on the spec. Found in Chromium source code...
      equal(request.getHeader("X-HTTP-Method-Override"), "POST");

      // V4 update request uses GET.
      equal(request.method, "GET");

      // V4 append the base64 encoded request to the query string.
      equal(request.queryString, gExpectedQueryV4);
      equal(request.queryString.indexOf("+"), -1);
      equal(request.queryString.indexOf("/"), -1);

      // Respond a V2 compatible content for now. In the future we can
      // send a meaningful response to test Bug 1284178 to see if the
      // update is successfully stored to database.
      response.setHeader(
        "Content-Type",
        "application/vnd.google.safebrowsing-update",
        false
      );
      response.setStatusLine(request.httpVersion, 200, "OK");

      // The protobuf binary represention of response:
      //
      // [
      //   {
      //     'threat_type': 2, // SOCIAL_ENGINEERING_PUBLIC
      //     'response_type': 2, // FULL_UPDATE
      //     'new_client_state': 'sta\x00te', // NEW_CLIENT_STATE
      //     'checksum': { "sha256": CHECKSUM }, // CHECKSUM
      //     'additions': { 'compression_type': RAW,
      //                    'prefix_size': 4,
      //                    'raw_hashes': "00000001000000020000000300000004"}
      //   }
      // ]
      //
      let content =
        "\x0A\x4A\x08\x02\x20\x02\x2A\x18\x08\x01\x12\x14\x08\x04\x12\x10\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x03\x3A\x06\x73\x74\x61\x00\x74\x65\x42\x22\x0A\x20\x30\x67\xC7\x2C\x5E\x50\x1C\x31\xE3\xFE\xCA\x73\xF0\x47\xDC\x34\x1A\x95\x63\x99\xEC\x70\x5E\x0A\xEE\x9E\xFB\x17\xA1\x55\x35\x78\x12\x08\x08\x08\x10\x80\x94\xEB\xDC\x03";

      response.bodyOutputStream.write(content, content.length);

      if (gIsV4Updated) {
        // This falls to the case where test_partialUpdateV4 is running.
        // We are supposed to have verified the update request contains
        // the state we set in the previous request.
        waitForUpdateSuccess(run_next_test);
        return;
      }

      waitUntilMetaDataSaved(NEW_CLIENT_STATE, CHECKSUM, () => {
        gIsV4Updated = true;

        if (gUpdatedCntForTableData === SERVER_INVOLVED_TEST_CASE_LIST.length) {
          // All tests are done!
          run_next_test();
          return;
        }

        info("Wait for all sever-involved tests to be done ...");
      });
    }
  );

  gHttpServV4.start(5555);

  registerCleanupFunction(function () {
    return (async function () {
      await Promise.all([gHttpServ.stop(), gHttpServV4.stop()]);
    })();
  });

  run_next_test();
}

// A trick to force updating tables. However, before calling this, we have to
// call disableAllUpdates() first to clean up the updateCheckers in listmanager.
function forceTableUpdate() {
  throwOnUpdateErrors();
  Services.prefs.setCharPref(PREF_NEXTUPDATETIME, "1");
  Services.prefs.setCharPref(PREF_NEXTUPDATETIME_V4, "1");
  gListManager.maybeToggleUpdateChecking();
}

function disableAllUpdates() {
  stopThrowingOnUpdateErrors();
  TEST_TABLE_DATA_LIST.forEach(t => gListManager.disableUpdate(t.tableName));
  gListManager.disableUpdate(TEST_TABLE_DATA_V4.tableName);
}

function waitForUpdateSuccess(callback) {
  Services.obs.addObserver(function listener() {
    Services.obs.removeObserver(listener, "safebrowsing-update-finished");
    callback();
  }, "safebrowsing-update-finished");
}