trySave method

Future<void> trySave({ @Deprecated('use fbRegion') String iosRegion = '', String fbV1Region = '', String fbV2Url = '', bool forceFBReferrer = false, Map<String, Object> installParamsExtra(Map<String, String> fields)?, })

Call this method at the start of app

Implementation

Future<void> trySave({
  @Deprecated('use fbRegion')
  final String iosRegion = '',
  final String fbV1Region = '',
  final String fbV2Url = '',
  final bool forceFBReferrer = false,
  Map<String, Object> Function(Map<String, String> fields)? installParamsExtra,
}) async {
  assert(!_isInitialized, 'Duplicate trySave call not needed');
  var params = 0;
  if (iosRegion.isNotEmpty) params++;
  if (fbV1Region.isNotEmpty) params++;
  if (fbV2Url.isNotEmpty) params++;
  assert(params <= 1, 'Use fbV1Region or fbV2Url parameter only');
  final region = fbV1Region.isEmpty ? iosRegion : fbV1Region;
  _isInitialized = true;

  try {
    final prefs = DSPrefs.I.internal;

    var referrer = prefs.getString(_referrerKey) ?? '';
    try {
      if (referrer.isEmpty) {
        final res = await Future.wait<String>([
          if (Platform.isIOS || forceFBReferrer)
                () async {
              assert(region.isNotEmpty || fbV2Url.isNotEmpty, 'fbRegion should be assigned (get_referrer cloud function must be deployed)');
              try {
                final startTime = DateTime.timestamp();
                final int respCode;
                if (fbV2Url.isEmpty) {
                  final res = await FirebaseFunctions.instanceFor(region: region).httpsCallable('get_referrer').call<String>();
                  respCode = 200;
                  referrer = res.data;
                } else {
                  final res = await http.get(
                    Uri.parse(fbV2Url),
                  );
                  respCode = res.statusCode;
                  if (respCode == 200) {
                    referrer = res.body;
                  }
                }
                final loadTime = DateTime.timestamp().difference(startTime);
                DSMetrica.reportEvent('fb_referrer', attributes: {
                  'value': referrer,
                  'resp_code': respCode,
                  'referrer_load_seconds': loadTime.inSeconds,
                  'referrer_load_milliseconds': loadTime.inMilliseconds,
                });
                final p = referrer.indexOf('?');
                if (p >= 0) {
                  referrer = referrer.substring(p + 1);
                }
                return referrer;
              } catch (e, stack) {
                Fimber.e('fb_referrer $e', stacktrace: stack);
                return 'err_fb';
              }
            } (),
          if (Platform.isAndroid)
                () async {
              try {
                final startTime = DateTime.timestamp();
                final ref =  await DSInternal.platform.invokeMethod('fetchInstallReferrer') as String;
                final loadTime = DateTime.timestamp().difference(startTime);
                DSMetrica.reportEvent('android_referrer', attributes: {
                  'value': referrer,
                  'referrer_load_seconds': loadTime.inSeconds,
                  'referrer_load_milliseconds': loadTime.inMilliseconds,
                });
                return ref;
              } catch (e, stack) {
                Fimber.e('android_referrer $e', stacktrace: stack);
                return 'err_android';
              }
            } (),
        ]);
        referrer = res.join('&');
        await prefs.setString(_referrerKey, referrer);
      }

      Fimber.i('ds_referrer=$referrer');

      if (!DSConstants.I.isInternalVersion) {
        if (isKnownReferrer()) {
          DSRemoteConfig.I.setPostfix('_r');
        } else {
          DSRemoteConfig.I.setPostfix('_e');
        }
      }

      // Send installs_full_referrer once. Only for Android platform
      if (prefs.getBool(_isSentKey) == true || !Platform.isAndroid) return;

      if (referrer == '') return;
      final data = Uri.splitQueryString(referrer);
      final utmSource = data['utm_source'];
      if (utmSource == null) return;

      final fid = await FirebaseInstallations.instance.getId();

      unawaited(FirebaseFirestore.instance.collection('installs_full_referrer').add({
        'bundle': DSConstants.I.packageInfo.packageName,
        'referrer': referrer,
        'referrer_len': referrer.length,
        'utm_source': utmSource,
        'firebase_id': fid,
        'timestamp': FieldValue.serverTimestamp(),
      }).then((value) {
        prefs.setBool(_isSentKey, true);
      }).timeout(const Duration(minutes: 1)));

      {
        final String utmSource = data['utm_source'] ?? '';
        final isValidFb = utmSource.contains('apps.facebook.com') || utmSource.contains('apps.instagram.com');

        DSMetrica.reportEvent('install_params', fbSend: true, fbAttributes: {
          'gclid': data['gclid'] ?? '',
          'ad_imp': data['adimp'] ?? '',
          'utm_source': utmSource,
          'utm_content': data['utm_content'] ?? '',
          'is_valid_fb_flow': isValidFb.toString(),
          'campaign': data['utm_campaign'] ?? 'unknown',
          'adjust_external_click_id': adjustExternalClickId,
          if (installParamsExtra != null)
            ...installParamsExtra(data)
        });
      }
    } catch (e, stack) {
      Fimber.e('$e: (referrer: $referrer)', stacktrace: stack);
    }
  } finally {
    final data = getReferrerFields();
    for (final callback in _changedCallbacks) {
      callback(data);
    }
  }
}