firka_wear: local sync store, 1h rule, remove KretaClient; data from phone only

firka_wear/lib/helpers/api/client/kreta_client.dart

@@ -1,519 +0,0 @@
-import 'dart:convert';
-import 'dart:math';
-
-import 'package:dio/dio.dart';
-import 'package:firka_wear/helpers/api/model/homework.dart';
-import 'package:firka_wear/helpers/api/model/timetable.dart';
-import 'package:firka_wear/helpers/db/models/generic_cache_model.dart';
-import 'package:firka_wear/helpers/db/models/homework_cache_model.dart';
-import 'package:firka_wear/helpers/db/models/timetable_cache_model.dart';
-import 'package:intl/intl.dart';
-import 'package:isar_community/isar.dart';
-
-import '../../../main.dart';
-import '../../db/models/token_model.dart';
-import '../../db/util.dart';
-import '../../debug_helper.dart';
-import '../consts.dart';
-import '../model/grade.dart';
-import '../model/notice_board.dart';
-import '../model/omission.dart';
-import '../model/student.dart';
-import '../model/test.dart';
-import '../token_grant.dart';
-
-class ApiResponse<T> {
-  T? response;
-  int statusCode;
-  String? err;
-  bool cached;
-
-  ApiResponse(
-    this.response,
-    this.statusCode,
-    this.err,
-    this.cached,
-  );
-
-  @override
-  String toString() {
-    return "ApiResponse("
-        "response: $response, "
-        "statusCode: $statusCode, "
-        "err: \"$err\", "
-        "cached: $cached"
-        ")";
-  }
-}
-
-class KretaClient {
-  bool _tokenMutex = false;
-  TokenModel model;
-  Isar isar;
-
-  KretaClient(this.model, this.isar);
-
-  Future<T> _mutexCallback<T>(Future<T> Function() callback) async {
-    while (_tokenMutex) {
-      await Future.delayed(const Duration(milliseconds: 50));
-    }
-    _tokenMutex = true;
-    try {
-      return callback();
-    } finally {
-      _tokenMutex = false;
-    }
-  }
-
-  Future<Response> _authReq(String method, String url, [Object? data]) async {
-    var localToken = await _mutexCallback<String>(() async {
-      var now = timeNow();
-
-      if (now.millisecondsSinceEpoch >=
-          model.expiryDate!.millisecondsSinceEpoch) {
-        var extended = await extendToken(model);
-        var tokenModel = TokenModel.fromResp(extended);
-
-        await isar.writeTxn(() async {
-          await isar.tokenModels.put(tokenModel);
-        });
-
-        model = tokenModel;
-      }
-
-      return model.accessToken!;
-    });
-
-    final headers = <String, String>{
-      // "content-type": "application/x-www-form-urlencoded; charset=UTF-8",
-      "accept": "*/*",
-      "user-agent": "eKretaStudent/264745 CFNetwork/1494.0.7 Darwin/23.4.0",
-      "authorization": "Bearer $localToken",
-      "apiKey": "21ff6c25-d1da-4a68-a811-c881a6057463"
-    };
-
-    return await dio.get(url,
-        options: Options(method: method, headers: headers), data: data);
-  }
-
-  Future<(dynamic, int)> _authJson(String method, String url,
-      [Object? data]) async {
-    var resp = await _authReq(method, url, data);
-
-    return (resp.data, resp.statusCode!);
-  }
-
-  Future<(dynamic, int, Object?, bool)> _cachingGet(
-      CacheId id, String url, bool forceCache) async {
-    // it would be *ideal* to use xor and left shift here, however
-    // binary operations seem to round the number down to
-    // 32 bits for some reason???
-    var cacheKey = model.studentIdNorm! + ((id.index + 1) * pow(10, 11));
-    var cache = await isar.genericCacheModels.get(cacheKey as int);
-
-    dynamic resp;
-    int statusCode;
-    try {
-      if (forceCache && cache != null) {
-        return (jsonDecode(cache.cacheData!), 200, null, true);
-      }
-      (resp, statusCode) = await _authJson("GET", url);
-
-      if (statusCode >= 400) {
-        if (cache != null) {
-          return (jsonDecode(cache.cacheData!), statusCode, null, true);
-        }
-      }
-    } catch (ex) {
-      if (cache != null) {
-        return (jsonDecode(cache.cacheData!), 0, ex, true);
-      } else {
-        return (null, 0, ex, false);
-      }
-    }
-
-    await isar.writeTxn(() async {
-      var cache = GenericCacheModel();
-      cache.cacheKey = cacheKey;
-      cache.cacheData = jsonEncode(resp);
-
-      isar.genericCacheModels.put(cache);
-    });
-
-    return (resp, statusCode, null, false);
-  }
-
-  ApiResponse<Student>? studentCache;
-
-  Future<ApiResponse<Student>> getStudent({bool forceCache = true}) async {
-    if (forceCache && studentCache != null) return studentCache!;
-    var (resp, status, ex, cached) = await _cachingGet(CacheId.getStudent,
-        KretaEndpoints.getStudentUrl(model.iss!), forceCache);
-
-    Student? student;
-    String? err;
-    try {
-      student = Student.fromJson(resp);
-    } catch (ex) {
-      err = ex.toString();
-    }
-
-    if (ex != null) {
-      err = ex.toString();
-    }
-
-    if (ex == null) studentCache = ApiResponse(student, 200, null, true);
-
-    return ApiResponse(student, status, err, cached);
-  }
-
-  ApiResponse<List<NoticeBoardItem>>? noticeBoardCache;
-
-  Future<ApiResponse<List<NoticeBoardItem>>> getNoticeBoard(
-      {bool forceCache = true}) async {
-    if (forceCache && noticeBoardCache != null) return noticeBoardCache!;
-    var (resp, status, ex, cached) = await _cachingGet(CacheId.getNoticeBoard,
-        KretaEndpoints.getNoticeBoard(model.iss!), forceCache);
-
-    var items = List<NoticeBoardItem>.empty(growable: true);
-    String? err;
-    try {
-      List<dynamic> rawItems = resp;
-      for (var item in rawItems) {
-        items.add(NoticeBoardItem.fromJson(item));
-      }
-    } catch (ex) {
-      err = ex.toString();
-    }
-
-    if (ex != null) {
-      err = ex.toString();
-    }
-
-    if (err == null) noticeBoardCache = ApiResponse(items, 200, null, true);
-
-    return ApiResponse(items, status, err, cached);
-  }
-
-  ApiResponse<List<Grade>>? gradeCache;
-
-  Future<ApiResponse<List<Grade>>> getGrades({bool forceCache = true}) async {
-    if (forceCache && gradeCache != null) {
-      return gradeCache!;
-    }
-    var (resp, status, ex, cached) = await _cachingGet(
-        CacheId.getGrades, KretaEndpoints.getGrades(model.iss!), forceCache);
-
-    var items = List<Grade>.empty(growable: true);
-    String? err;
-    try {
-      List<dynamic> rawItems = resp;
-      for (var item in rawItems) {
-        items.add(Grade.fromJson(item));
-      }
-    } catch (ex) {
-      err = ex.toString();
-    }
-
-    if (ex != null) {
-      err = ex.toString();
-    }
-
-    items.sort((a, b) => b.recordDate.compareTo(a.recordDate));
-
-    if (ex == null) gradeCache = ApiResponse(items, 200, null, true);
-
-    return ApiResponse(items, status, err, cached);
-  }
-
-  Future<(List<dynamic>, int, Object?, bool)>
-      _timedCachingGet<T extends DatedCacheEntry>(
-          IsarCollection<T> cacheModel,
-          String endpoint,
-          DateTime from,
-          DateTime? to,
-          bool forceCache,
-          Future<void> Function(dynamic, int) storeCache) async {
-    var cacheKey = genCacheKey(from, model.studentIdNorm!);
-    var cache = await cacheModel.get(cacheKey);
-    var formatter = DateFormat('yyyy-MM-dd');
-    var fromStr = formatter.format(from);
-    var toStr = to != null ? formatter.format(to) : null;
-    var now = timeNow();
-
-    if (cache != null && (cache as dynamic).values == null) {
-      (cache as dynamic).values = List<String>.empty(growable: true);
-    }
-
-    List<dynamic> resp;
-    int statusCode;
-    try {
-      if (forceCache && cache != null) {
-        var items = List<dynamic>.empty(growable: true);
-        for (var item in (cache as dynamic).values) {
-          items.add(jsonDecode(item));
-        }
-
-        return (items, 200, null, true);
-      }
-      if (toStr == null) {
-        (resp, statusCode) = await _authJson(
-            "GET",
-            "$endpoint?"
-                "datumTol=$fromStr");
-      } else {
-        (resp, statusCode) = await _authJson(
-            "GET",
-            "$endpoint?"
-                "datumTol=$fromStr&datumIg=$toStr");
-      }
-
-      if (statusCode >= 400) {
-        if (cache != null) {
-          var items = List<dynamic>.empty(growable: true);
-          for (var item in (cache as dynamic).values) {
-            items.add(jsonDecode(item));
-          }
-          return (items, statusCode, null, true);
-        }
-      }
-    } catch (ex) {
-      if (cache != null) {
-        var items = List<dynamic>.empty(growable: true);
-        for (var item in (cache as dynamic).values) {
-          items.add(jsonDecode(item));
-        }
-        return (items, 0, ex, true);
-      } else {
-        return (List<dynamic>.empty(growable: true), 0, ex, false);
-      }
-    }
-
-    // only cache stuff in a 1 month frame
-    if (from.millisecondsSinceEpoch >=
-        now.subtract(Duration(days: 30)).millisecondsSinceEpoch) {
-      if (to == null ||
-          to.millisecondsSinceEpoch <=
-              now.add(Duration(days: 30)).millisecondsSinceEpoch) {
-        await isar.writeTxn(() async {
-          await storeCache(resp, cacheKey);
-        });
-      }
-    }
-
-    return (resp, statusCode, null, false);
-  }
-
-  /// Expects from and to to be 7 days apart
-  Future<ApiResponse<List<Lesson>>> _getTimeTable(
-      DateTime from, DateTime to, bool forceCache) async {
-    var (resp, status, ex, cached) =
-        await _timedCachingGet<TimetableCacheModel>(
-            isar.timetableCacheModels,
-            KretaEndpoints.getTimeTable(model.iss!),
-            from,
-            to,
-            forceCache, (dynamic resp, int cacheKey) async {
-      TimetableCacheModel cache = TimetableCacheModel();
-      var rawClasses = List<String>.empty(growable: true);
-
-      for (var obj in resp) {
-        rawClasses.add(jsonEncode(obj));
-      }
-
-      cache.cacheKey = cacheKey;
-      cache.values = rawClasses;
-
-      await isar.timetableCacheModels.put(cache as dynamic);
-    });
-
-    var items = List<Lesson>.empty(growable: true);
-    String? err;
-    try {
-      List<dynamic> rawItems = resp;
-      for (var item in rawItems) {
-        items.add(Lesson.fromJson(item));
-      }
-    } catch (ex) {
-      err = ex.toString();
-    }
-
-    if (ex != null) {
-      err = ex.toString();
-    }
-
-    return ApiResponse(items, status, err, cached);
-  }
-
-  /// Expects from and to to be 7 days apart
-  Future<ApiResponse<List<Homework>>> _getHomework(
-      DateTime from, DateTime to, bool forceCache) async {
-    var (resp, status, ex, cached) = await _timedCachingGet<HomeworkCacheModel>(
-        isar.homeworkCacheModels,
-        KretaEndpoints.getHomework(model.iss!),
-        from,
-        null,
-        forceCache, (dynamic resp, int cacheKey) async {
-      HomeworkCacheModel cache = HomeworkCacheModel();
-      var rawClasses = List<String>.empty(growable: true);
-
-      for (var obj in resp) {
-        rawClasses.add(jsonEncode(obj));
-      }
-
-      cache.cacheKey = cacheKey;
-      cache.values = rawClasses;
-
-      await isar.homeworkCacheModels.put(cache as dynamic);
-    });
-
-    var items = List<Homework>.empty(growable: true);
-    String? err;
-    try {
-      List<dynamic> rawItems = resp;
-      for (var item in rawItems) {
-        items.add(Homework.fromJson(item));
-      }
-    } catch (ex) {
-      err = ex.toString();
-    }
-
-    if (ex != null) {
-      err = ex.toString();
-    }
-
-    return ApiResponse(items, status, err, cached);
-  }
-
-  /// Automatically aligns requests to start at Monday and end at Sunday
-  Future<ApiResponse<List<Homework>>> getHomework(DateTime from, DateTime to,
-      {bool forceCache = true}) async {
-    var homework = List<Homework>.empty(growable: true);
-    String? err;
-    bool cached = true;
-
-    for (var i = from.millisecondsSinceEpoch;
-        i < to.millisecondsSinceEpoch;
-        i += 604800000) {
-      var from = DateTime.fromMillisecondsSinceEpoch(i);
-      var start = from.subtract(Duration(days: from.weekday - 1));
-      var end = start.add(Duration(days: 6));
-
-      var resp = await _getHomework(start, end, forceCache);
-      if (resp.err != null) {
-        err = resp.err;
-        if (!resp.cached) {
-          return resp;
-        } else {
-          homework.addAll(resp.response!);
-        }
-      } else {
-        homework.addAll(resp.response!);
-      }
-      if (!resp.cached) cached = false;
-    }
-
-    homework.sort((a, b) => a.startDate.compareTo(b.startDate));
-    homework = homework.where((h) => h.dueDate.isAfter(timeNow())).toList();
-
-    return ApiResponse(homework, 200, err, cached);
-  }
-
-  /// Automatically aligns requests to start at Monday and end at Sunday
-  Future<ApiResponse<List<Lesson>>> getTimeTable(DateTime from, DateTime to,
-      {bool forceCache = true}) async {
-    var lessons = List<Lesson>.empty(growable: true);
-    String? err;
-    bool cached = true;
-
-    for (var i = from.millisecondsSinceEpoch;
-        i < to.millisecondsSinceEpoch;
-        i += 604800000) {
-      var from = DateTime.fromMillisecondsSinceEpoch(i);
-      var start = from.subtract(Duration(days: from.weekday - 1));
-      var end = start.add(Duration(days: 6));
-
-      var resp = await _getTimeTable(start, end, forceCache);
-      if (resp.err != null) {
-        err = resp.err;
-        if (!resp.cached) {
-          return resp;
-        } else {
-          lessons.addAll(resp.response!);
-        }
-      } else {
-        lessons.addAll(resp.response!);
-      }
-      if (!resp.cached) cached = false;
-    }
-
-    lessons.sort((a, b) => a.start.compareTo(b.start));
-    lessons = lessons
-        .where(
-            (lesson) => lesson.start.isAfter(from) && lesson.end.isBefore(to))
-        .toList();
-
-    return ApiResponse(lessons, 200, err, cached);
-  }
-
-  Future<ApiResponse<List<Test>>> getTests({bool forceCache = true}) async {
-    var (resp, status, ex, cached) = await _cachingGet(
-        CacheId.getTests, KretaEndpoints.getTests(model.iss!), forceCache);
-
-    var items = List<Test>.empty(growable: true);
-    String? err;
-    try {
-      List<dynamic> rawItems = resp;
-      for (var item in rawItems) {
-        items.add(Test.fromJson(item));
-      }
-    } catch (ex) {
-      err = ex.toString();
-    }
-
-    if (ex != null) {
-      err = ex.toString();
-    }
-
-    // items.sort((a, b) => a.date.compareTo(b.date));
-
-    return ApiResponse(items, status, err, cached);
-  }
-
-  ApiResponse<List<Omission>>? omissionsCache;
-
-  Future<ApiResponse<List<Omission>>> getOmissions(
-      {bool forceCache = true}) async {
-    if (omissionsCache != null) return omissionsCache!;
-    var (resp, status, ex, cached) = await _cachingGet(CacheId.getOmissions,
-        KretaEndpoints.getOmissions(model.iss!), forceCache);
-
-    var items = List<Omission>.empty(growable: true);
-    String? err;
-    try {
-      List<dynamic> rawItems = resp;
-      for (var item in rawItems) {
-        items.add(Omission.fromJson(item));
-      }
-    } catch (ex) {
-      err = ex.toString();
-    }
-
-    if (ex != null) {
-      err = ex.toString();
-    }
-
-    items.sort((a, b) => a.date.compareTo(b.date));
-
-    if (ex == null) omissionsCache = ApiResponse(items, 200, null, true);
-
-    return ApiResponse(items, status, err, cached);
-  }
-
-  void evictMemCache() {
-    studentCache = null;
-    noticeBoardCache = null;
-    gradeCache = null;
-    omissionsCache = null;
-  }
-}

firka_wear/lib/helpers/api/consts.dart

@@ -16,37 +16,7 @@
   along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
+/// Watch no longer calls Kréta API; data comes from phone via init_data/sync_data.
 class Constants {
   static const clientId = "kreta-ellenorzo-student-mobile-ios";
 }
-
-class KretaEndpoints {
-  static String kretaBase = "e-kreta.hu";
-  static String kreta(String iss) {
-    if (iss == "firka-test") {
-      return kretaBase;
-    } else {
-      return "https://$iss.$kretaBase";
-    }
-  }
-
-  static String kretaIdp = "https://idp.e-kreta.hu";
-  static String kretaLoginUrl =
-      "$kretaIdp/Account/Login?ReturnUrl=%2Fconnect%2Fauthorize%2Fcallback%3Fprompt%3Dlogin%26nonce%3DwylCrqT4oN6PPgQn2yQB0euKei9nJeZ6_ffJ-VpSKZU%26response_type%3Dcode%26code_challenge_method%3DS256%26scope%3Dopenid%2520email%2520offline_access%2520kreta-ellenorzo-webapi.public%2520kreta-eugyintezes-webapi.public%2520kreta-fileservice-webapi.public%2520kreta-mobile-global-webapi.public%2520kreta-dkt-webapi.public%2520kreta-ier-webapi.public%26code_challenge%3DHByZRRnPGb-Ko_wTI7ibIba1HQ6lor0ws4bcgReuYSQ%26redirect_uri%3Dhttps%253A%252F%252Fmobil.e-kreta.hu%252Fellenorzo-student%252Fprod%252Foauthredirect%26client_id%3Dkreta-ellenorzo-student-mobile-ios%26state%3Dkreta_student_mobile%26suppressed_prompt%3Dlogin";
-  static String tokenGrantUrl = "$kretaIdp/connect/token";
-
-  static String getStudentUrl(String iss) =>
-      "${kreta(iss)}/ellenorzo/v3/sajat/TanuloAdatlap";
-  static String getNoticeBoard(String iss) =>
-      "${kreta(iss)}/ellenorzo/v3/sajat/FaliujsagElemek";
-  static String getGrades(String iss) =>
-      "${kreta(iss)}/ellenorzo/v3/sajat/Ertekelesek";
-  static String getTimeTable(String iss) =>
-      "${kreta(iss)}/ellenorzo/v3/sajat/OrarendElemek";
-  static String getOmissions(String iss) =>
-      "${kreta(iss)}/ellenorzo/v3/sajat/Mulasztasok";
-  static String getHomework(String iss) =>
-      "${kreta(iss)}/ellenorzo/v3/sajat/HaziFeladatok";
-  static String getTests(String iss) =>
-      "${kreta(iss)}/ellenorzo/v3/sajat/BejelentettSzamonkeresek";
-}

firka_wear/lib/helpers/api/token_grant.dart

@@ -1,90 +0,0 @@
-/*
-  Firka, alternative e-Kréta client.
-  Copyright (C) 2025  QwIT Development
-
-  This program is free software: you can redistribute it and/or modify
-  it under the terms of the GNU Affero General Public License as
-  published by the Free Software Foundation, either version 3 of the
-  License, or (at your option) any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU Affero General Public License for more details.
-
-  You should have received a copy of the GNU Affero General Public License
-  along with this program.  If not, see <https://www.gnu.org/licenses/>.
-*/
-
-import 'package:dio/dio.dart';
-import 'package:firka_wear/helpers/api/resp/token_grant.dart';
-import 'package:firka_wear/helpers/db/models/token_model.dart';
-
-import '../../main.dart';
-import 'consts.dart';
-
-Future<TokenGrantResponse> getAccessToken(String code) async {
-  final headers = const <String, String>{
-    "content-type": "application/x-www-form-urlencoded; charset=UTF-8",
-    "accept": "*/*",
-    "user-agent": "eKretaStudent/264745 CFNetwork/1494.0.7 Darwin/23.4.0",
-  };
-
-  final formData = <String, String>{
-    "code": code,
-    "code_verifier": "DSpuqj_HhDX4wzQIbtn8lr8NLE5wEi1iVLMtMK0jY6c",
-    "redirect_uri":
-        "https://mobil.e-kreta.hu/ellenorzo-student/prod/oauthredirect",
-    "client_id": Constants.clientId,
-    "grant_type": "authorization_code",
-  };
-
-  try {
-    final response = await dio.post(KretaEndpoints.tokenGrantUrl,
-        options: Options(headers: headers), data: formData);
-
-    switch (response.statusCode) {
-      case 200:
-        return TokenGrantResponse.fromJson(response.data);
-      case 401:
-        throw Exception("Invalid grant");
-      default:
-        throw Exception(
-            "Failed to get access token, response code: ${response.statusCode}");
-    }
-  } catch (e) {
-    rethrow;
-  }
-}
-
-Future<TokenGrantResponse> extendToken(TokenModel model) async {
-  final headers = const <String, String>{
-    "content-type": "application/x-www-form-urlencoded; charset=UTF-8",
-    "accept": "*/*",
-    "user-agent": "eKretaStudent/264745 CFNetwork/1494.0.7 Darwin/23.4.0",
-  };
-
-  final formData = <String, String>{
-    "institute_code": model.iss!,
-    "refresh_token": model.refreshToken!,
-    "grant_type": "refresh_token",
-    "client_id": Constants.clientId,
-  };
-
-  try {
-    final response = await dio.post(KretaEndpoints.tokenGrantUrl,
-        options: Options(headers: headers), data: formData);
-
-    switch (response.statusCode) {
-      case 200:
-        return TokenGrantResponse.fromJson(response.data);
-      case 401:
-        throw Exception("Invalid grant");
-      default:
-        throw Exception(
-            "Failed to get access token, response code: ${response.statusCode}");
-    }
-  } catch (e) {
-    rethrow;
-  }
-}

firka_wear/lib/helpers/db/models/token_model.dart

@@ -1,10 +1,5 @@
-import 'package:dart_jsonwebtoken/dart_jsonwebtoken.dart';
-import 'package:firka_wear/helpers/api/resp/token_grant.dart';
 import 'package:isar_community/isar.dart';
 
-import '../../api/resp/token_grant.dart';
-import '../../debug_helper.dart';
-
 part 'token_model.g.dart';
 
 @collection
@@ -19,8 +14,15 @@ class TokenModel {
 
   TokenModel();
 
-  factory TokenModel.fromValues(Id studentIdNorm, studentId, String iss,
+  factory TokenModel.fromValues(
-      String idToken, String accessToken, String refreshToken, int expiryDate) {
+    Id studentIdNorm,
+    studentId,
+    String iss,
+    String idToken,
+    String accessToken,
+    String refreshToken,
+    int expiryDate,
+  ) {
     var m = TokenModel();
 
     m.studentIdNorm = studentIdNorm;
@@ -33,22 +35,4 @@ class TokenModel {
 
     return m;
   }
-
-  factory TokenModel.fromResp(TokenGrantResponse resp) {
-    var m = TokenModel();
-    final jwt = JWT.decode(resp.idToken);
-
-    m.studentIdNorm = int.parse(
-        jwt.payload["kreta:user_name"].toString().replaceAll("G0", ""));
-    m.studentId = jwt.payload["kreta:user_name"];
-    m.iss = jwt.payload["kreta:institute_code"];
-    m.idToken = resp.idToken;
-    m.accessToken = resp.accessToken;
-    m.refreshToken = resp.refreshToken;
-    m.expiryDate = timeNow()
-        .add(Duration(seconds: resp.expiresIn))
-        .subtract(Duration(minutes: 1)); // just to be safe
-
-    return m;
-  }
 }

firka_wear/lib/helpers/sync/wear_sync_store.dart

@@ -0,0 +1,79 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:path_provider/path_provider.dart';
+
+import 'package:firka_wear/helpers/api/model/grade.dart';
+import 'package:firka_wear/helpers/api/model/timetable.dart';
+
+const String _syncFileName = 'wear_sync_data.json';
+
+/// Persists and loads synced data (timetable, grades, lastSyncAt) from the phone.
+class WearSyncStore {
+  List<Lesson> _timetable = [];
+  List<Grade> _grades = [];
+  DateTime? _lastSyncAt;
+
+  List<Lesson> get timetable => List.unmodifiable(_timetable);
+  List<Grade> get grades => List.unmodifiable(_grades);
+  DateTime? get lastSyncAt => _lastSyncAt;
+
+  /// True if we have no data or data is older than 1 hour.
+  bool get needsSync {
+    if (_lastSyncAt == null) return true;
+    return DateTime.now().difference(_lastSyncAt!) > const Duration(hours: 1);
+  }
+
+  Future<String> _getSyncFilePath() async {
+    final dir = await getApplicationDocumentsDirectory();
+    return '${dir.path}/$_syncFileName';
+  }
+
+  Future<void> load() async {
+    try {
+      final path = await _getSyncFilePath();
+      final file = File(path);
+      if (!await file.exists()) return;
+      final json =
+          jsonDecode(await file.readAsString()) as Map<String, dynamic>;
+      _lastSyncAt = json['lastSyncAt'] != null
+          ? DateTime.parse(json['lastSyncAt'] as String)
+          : null;
+      final rawTimetable = json['timetable'] as List<dynamic>? ?? [];
+      _timetable = rawTimetable
+          .map((e) => Lesson.fromJson(Map<String, dynamic>.from(e as Map)))
+          .toList();
+      final rawGrades = json['grades'] as List<dynamic>? ?? [];
+      _grades = rawGrades
+          .map((e) => Grade.fromJson(Map<String, dynamic>.from(e as Map)))
+          .toList();
+    } catch (_) {}
+  }
+
+  Future<void> save({
+    required DateTime? lastSyncAt,
+    required List<Lesson> timetable,
+    required List<Grade> grades,
+  }) async {
+    _lastSyncAt = lastSyncAt;
+    _timetable = timetable;
+    _grades = grades;
+    final path = await _getSyncFilePath();
+    final file = File(path);
+    await file.writeAsString(
+      jsonEncode({
+        'lastSyncAt': lastSyncAt?.toUtc().toIso8601String(),
+        'timetable': timetable.map((e) => e.toJson()).toList(),
+        'grades': grades.map((e) => e.toJson()).toList(),
+      }),
+    );
+  }
+
+  /// Returns lessons that fall on [date] (by date string or start date).
+  List<Lesson> getLessonsForDate(DateTime date) {
+    final dateStr =
+        '${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
+    return _timetable.where((l) => l.date == dateStr).toList()
+      ..sort((a, b) => a.start.compareTo(b.start));
+  }
+}

firka_wear/lib/main.dart

@@ -7,6 +7,7 @@ import 'package:firka_wear/helpers/db/models/generic_cache_model.dart';
 import 'package:firka_wear/helpers/db/models/homework_cache_model.dart';
 import 'package:firka_wear/helpers/db/models/timetable_cache_model.dart';
 import 'package:firka_wear/helpers/db/models/token_model.dart';
+import 'package:firka_wear/helpers/sync/wear_sync_store.dart';
 import 'package:firka_wear/ui/model/style.dart';
 import 'package:firka_wear/ui/wear/screens/login/login_screen.dart';
 import 'package:flutter/material.dart';
@@ -18,7 +19,6 @@ import 'package:path_provider/path_provider.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:wear_plus/wear_plus.dart';
 
-import 'helpers/api/client/kreta_client.dart';
 import 'l10n/app_localizations.dart';
 import 'l10n/app_localizations_de.dart';
 import 'l10n/app_localizations_en.dart';
@@ -47,16 +47,18 @@ class DeviceInfo {
 
 class WearAppInitialization {
   final Isar isar;
-  late KretaClient client;
+  final WearSyncStore syncStore;
   final int tokenCount;
   final AppLocalizations l10n;
   final DeviceInfo devInfo;
 
-  WearAppInitialization(
+  WearAppInitialization({
-      {required this.isar,
+    required this.isar,
-      required this.tokenCount,
+    required this.syncStore,
-      required this.l10n,
+    required this.tokenCount,
-      required this.devInfo});
+    required this.l10n,
+    required this.devInfo,
+  });
 }
 
 Future<Isar> initDB() async {
@@ -68,7 +70,7 @@ Future<Isar> initDB() async {
       TokenModelSchema,
       GenericCacheModelSchema,
       TimetableCacheModelSchema,
-      HomeworkCacheModelSchema
+      HomeworkCacheModelSchema,
     ],
     inspector: true,
     directory: dir.path,
@@ -90,28 +92,21 @@ AppLocalizations getLang() {
 
 Future<WearAppInitialization> initializeApp() async {
   final isar = await initDB();
+  final syncStore = WearSyncStore();
+  await syncStore.load();
 
   const channel = MethodChannel("firka.app/main");
-  final rawInfo =
+  final rawInfo = ((await channel.invokeMethod("get_info")) as String).split(
-      ((await channel.invokeMethod("get_info")) as String).split(";");
+    ";",
+  );
 
-  var init = WearAppInitialization(
+  return WearAppInitialization(
     isar: isar,
+    syncStore: syncStore,
     tokenCount: await isar.tokenModels.count(),
     l10n: getLang(),
     devInfo: DeviceInfo(rawInfo[0], rawInfo[1], rawInfo[2]),
   );
-
-  resetOldTimeTableCache(isar);
-  resetOldHomeworkCache(isar);
-
-  // TODO: Account selection
-  if (init.tokenCount > 0) {
-    init.client =
-        KretaClient((await isar.tokenModels.where().findFirst())!, isar);
-  }
-
-  return init;
 }
 
 void main() async {
@@ -207,7 +202,7 @@ class WearInitializationScreen extends StatelessWidget {
               '/login': (context) =>
                   WearLoginScreen(data, key: ValueKey('wearLoginScreen')),
               '/home': (context) =>
-                  WearHomeScreen(data, key: ValueKey('wearHomeScreen'))
+                  WearHomeScreen(data, key: ValueKey('wearHomeScreen')),
             },
           );
         }
@@ -217,11 +212,7 @@ class WearInitializationScreen extends StatelessWidget {
             body: Center(
               child: Column(
                 mainAxisAlignment: MainAxisAlignment.center,
-                children: [
+                children: [Container(color: wearStyle.colors.secondary)],
-                  Container(
-                    color: wearStyle.colors.secondary,
-                  )
-                ],
               ),
             ),
           ),

firka_wear/lib/ui/wear/screens/home/home_screen.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:math';
 
+import 'package:firka_wear/helpers/api/model/grade.dart';
 import 'package:firka_wear/helpers/api/model/timetable.dart';
 import 'package:firka_wear/helpers/extensions.dart';
 import 'package:firka_wear/ui/widget/class_icon.dart';
@@ -9,6 +10,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_arc_text/flutter_arc_text.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
+import 'package:watch_connectivity/watch_connectivity.dart';
 import 'package:wear_plus/wear_plus.dart';
 
 import '../../../../helpers/debug_helper.dart';
@@ -38,6 +40,8 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
   bool init = false;
   WearMode mode = WearMode.active;
   final platform = MethodChannel('firka.app/main');
+  final watch = WatchConnectivity();
+  StreamSubscription? _messageSub;
 
   bool disposed = false;
 
@@ -45,7 +49,10 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
   void initState() {
     super.initState();
     now = timeNow();
-
+    _messageSub = watch.messageStream.listen((e) {
+      final msg = Map<String, dynamic>.from(e);
+      if (msg['id'] == 'sync_data') _onSyncData(msg);
+    });
     timer = Timer.periodic(Duration(seconds: 1), (timer) async {
       setState(() {
         now = timeNow();
@@ -54,22 +61,40 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
     initStateAsync();
   }
 
-  Future<void> initStateAsync() async {
+  void _onSyncData(Map<String, dynamic> msg) async {
-    var kreta = data.client;
+    final lastSyncAt = msg['lastSyncAt'] != null
-
+        ? DateTime.parse(msg['lastSyncAt'] as String)
-    now = timeNow();
+        : null;
-    var todayStart = now.getMidnight();
+    final rawTimetable = msg['timetable'] as List<dynamic>? ?? [];
-    var todayEnd = todayStart.add(Duration(hours: 23, minutes: 59));
+    final timetable = rawTimetable
-    var classes = await kreta.getTimeTable(todayStart, todayEnd);
+        .map((e) => Lesson.fromJson(Map<String, dynamic>.from(e as Map)))
-
+        .toList();
+    final rawGrades = msg['grades'] as List<dynamic>? ?? [];
+    final grades = rawGrades
+        .map((e) => Grade.fromJson(Map<String, dynamic>.from(e as Map)))
+        .toList();
+    await data.syncStore.save(
+      lastSyncAt: lastSyncAt,
+      timetable: timetable,
+      grades: grades,
+    );
     if (disposed) return;
     setState(() {
-      if (classes.response != null) today = classes.response!;
+      now = timeNow();
-      if (classes.statusCode != 200) {
+      today = data.syncStore.getLessonsForDate(now);
-        apiError = "Unexpected status : ${classes.statusCode}";
+    });
-      }
+  }
-      if (classes.err != null) apiError = classes.err!;
 
+  Future<void> initStateAsync() async {
+    now = timeNow();
+    if (data.syncStore.needsSync) {
+      watch.sendMessage({'id': 'request_sync'});
+    }
+    await data.syncStore.load();
+    if (disposed) return;
+    setState(() {
+      now = timeNow();
+      today = data.syncStore.getLessonsForDate(now);
       init = true;
     });
   }
@@ -82,34 +107,44 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
       return (body, 255.h);
     }
 
-    if (today.isEmpty && apiError != "") {
+    if (today.isEmpty &&
-      body.add(Text(
+        data.syncStore.needsSync &&
-        apiError,
+        data.syncStore.timetable.isEmpty) {
-        style:
+      body.add(
-            wearStyle.fonts.H_18px.apply(color: wearStyle.colors.textPrimary),
+        Text(
-        textAlign: TextAlign.center,
+          AppLocalizations.of(context)!.wear_sync_with_phone,
-      ));
+          style: wearStyle.fonts.H_18px.apply(
-
+            color: wearStyle.colors.textPrimary,
+          ),
+          textAlign: TextAlign.center,
+        ),
+      );
       return (body, 255.h);
     }
     if (today.isEmpty) {
-      body.add(Text(
+      body.add(
-        AppLocalizations.of(context)!.noClasses,
+        Text(
-        style:
+          AppLocalizations.of(context)!.noClasses,
-            wearStyle.fonts.H_18px.apply(color: wearStyle.colors.textPrimary),
+          style: wearStyle.fonts.H_18px.apply(
-        textAlign: TextAlign.center,
+            color: wearStyle.colors.textPrimary,
-      ));
+          ),
+          textAlign: TextAlign.center,
+        ),
+      );
 
       platform.invokeMethod('activity_cancel');
       return (body, 255.h);
     }
     if (now.isAfter(today.last.end)) {
-      body.add(Text(
+      body.add(
-        AppLocalizations.of(context)!.noMoreClasses,
+        Text(
-        style:
+          AppLocalizations.of(context)!.noMoreClasses,
-            wearStyle.fonts.H_18px.apply(color: wearStyle.colors.textPrimary),
+          style: wearStyle.fonts.H_18px.apply(
-        textAlign: TextAlign.center,
+            color: wearStyle.colors.textPrimary,
-      ));
+          ),
+          textAlign: TextAlign.center,
+        ),
+      );
 
       platform.invokeMethod('activity_cancel');
       return (body, 300.h);
@@ -117,12 +152,15 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
     if (now.isBefore(today.first.start)) {
       var untilFirst = today.first.start.difference(now);
 
-      body.add(Text(
+      body.add(
-        AppLocalizations.of(context)!.firstIn(untilFirst.formatDuration()),
+        Text(
-        style:
+          AppLocalizations.of(context)!.firstIn(untilFirst.formatDuration()),
-            wearStyle.fonts.H_18px.apply(color: wearStyle.colors.textPrimary),
+          style: wearStyle.fonts.H_18px.apply(
-        textAlign: TextAlign.center,
+            color: wearStyle.colors.textPrimary,
-      ));
+          ),
+          textAlign: TextAlign.center,
+        ),
+      );
 
       platform.invokeMethod('activity_update');
       return (body, 255.h);
@@ -155,14 +193,17 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
 
         var minutes = currentBreakProgress.inMinutes + 1;
 
-        body.add(CustomPaint(
+        body.add(
+          CustomPaint(
             painter: CircularProgressPainter(
-                progress: currentBreakProgress.inMilliseconds /
+              progress:
-                    currentBreak.inMilliseconds,
+                  currentBreakProgress.inMilliseconds /
-                // progress: 5 / 10,
+                  currentBreak.inMilliseconds,
-                screenSize: MediaQuery.of(context).size,
+              // progress: 5 / 10,
-                strokeWidth: 4,
+              screenSize: MediaQuery.of(context).size,
-                color: wearStyle.colors.accent),
+              strokeWidth: 4,
+              color: wearStyle.colors.accent,
+            ),
             child: Column(
               mainAxisAlignment: MainAxisAlignment.center,
               children: [
@@ -174,9 +215,7 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
                       color: wearStyle.colors.textPrimary,
                       fontSize: 14,
                       fontFamily: 'Montserrat',
-                      fontVariations: [
+                      fontVariations: [FontVariation('wght', 600)],
-                        FontVariation('wght', 600),
-                      ],
                     ),
                   ),
                 ),
@@ -187,14 +226,14 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
                       color: wearStyle.colors.textPrimary,
                       fontSize: 12,
                       fontFamily: 'Montserrat',
-                      fontVariations: [
+                      fontVariations: [FontVariation('wght', 400)],
-                        FontVariation('wght', 400),
-                      ],
                     ),
                   ),
-                )
+                ),
               ],
-            )));
+            ),
+          ),
+        );
 
         platform.invokeMethod('activity_update');
         return (body, 200.h);
@@ -215,61 +254,61 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
                 color: wearStyle.colors.textPrimary,
                 fontSize: 12,
                 fontFamily: 'Montserrat',
-                fontVariations: [
+                fontVariations: [FontVariation('wght', 400)],
-                  FontVariation('wght', 400),
-                ],
               ),
             ),
           );
         }
 
-        body.add(CustomPaint(
+        body.add(
+          CustomPaint(
             painter: CircularProgressPainter(
-                progress: elapsed.inMilliseconds / duration.inMilliseconds,
+              progress: elapsed.inMilliseconds / duration.inMilliseconds,
-                screenSize: MediaQuery.of(context).size,
+              screenSize: MediaQuery.of(context).size,
-                strokeWidth: 4,
+              strokeWidth: 4,
-                color: wearStyle.colors.accent),
+              color: wearStyle.colors.accent,
-            child: Column(children: [
+            ),
-              SizedBox(height: nextLesson == null ? 20.h : 0),
+            child: Column(
-              Center(
+              children: [
-                child: ClassIconWidget(
+                SizedBox(height: nextLesson == null ? 20.h : 0),
-                  color: wearStyle.colors.accent,
+                Center(
-                  size: 16,
+                  child: ClassIconWidget(
-                  uid: currentLesson.uid,
+                    color: wearStyle.colors.accent,
-                  className: currentLesson.name,
+                    size: 16,
-                  category: currentLesson.subject?.name ?? '',
+                    uid: currentLesson.uid,
-                ).build(context),
+                    className: currentLesson.name,
-              ),
+                    category: currentLesson.subject?.name ?? '',
-              const SizedBox(height: 4),
+                  ).build(context),
-              Center(
+                ),
-                child: Text(
+                const SizedBox(height: 4),
-                  "${currentLesson.name}, ${currentLesson.roomName}",
+                Center(
-                  style: TextStyle(
+                  child: Text(
-                    color: wearStyle.colors.textPrimary,
+                    "${currentLesson.name}, ${currentLesson.roomName}",
-                    fontSize: 14,
+                    style: TextStyle(
-                    fontFamily: 'Montserrat',
+                      color: wearStyle.colors.textPrimary,
-                    fontVariations: [
+                      fontSize: 14,
-                      FontVariation('wght', 600),
+                      fontFamily: 'Montserrat',
-                    ],
+                      fontVariations: [FontVariation('wght', 600)],
+                    ),
                   ),
                 ),
-              ),
+                Center(
-              Center(
+                  child: Text(
-                child: Text(
+                    AppLocalizations.of(context)!.timeLeft(minutes),
-                  AppLocalizations.of(context)!.timeLeft(minutes),
+                    style: TextStyle(
-                  style: TextStyle(
+                      color: wearStyle.colors.textPrimary,
-                    color: wearStyle.colors.textPrimary,
+                      fontSize: 12,
-                    fontSize: 12,
+                      fontFamily: 'Montserrat',
-                    fontFamily: 'Montserrat',
+                      fontVariations: [FontVariation('wght', 400)],
-                    fontVariations: [
+                    ),
-                      FontVariation('wght', 400),
-                    ],
                   ),
                 ),
-              ),
+                const SizedBox(height: 8),
-              const SizedBox(height: 8),
+                nextLessonWidget,
-              nextLessonWidget,
+              ],
-            ])));
+            ),
+          ),
+        );
 
         platform.invokeMethod('activity_update');
         return (body, 200.h);
@@ -294,9 +333,7 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
           fontSize: 12,
           color: wearStyle.colors.secondary,
           fontFamily: 'Montserrat',
-          fontVariations: [
+          fontVariations: [FontVariation('wght', 500)],
-            FontVariation('wght', 500),
-          ],
         ),
         placement: Placement.inside,
       );
@@ -308,9 +345,7 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
           : wearStyle.colors.backgroundAmoled,
       body: Stack(
         children: [
-          Center(
+          Center(child: titleBar),
-            child: titleBar,
-          ),
           Center(
             child: Column(
               children: [
@@ -318,9 +353,7 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
                   builder: (context, shape, child) {
                     return Column(
                       mainAxisAlignment: MainAxisAlignment.center,
-                      children: <Widget>[
+                      children: <Widget>[child!],
-                        child!,
-                      ],
                     );
                   },
                   child: AmbientMode(
@@ -339,19 +372,20 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
                         mainAxisAlignment: MainAxisAlignment.center,
                         children: <Widget>[
                           Container(
-                              padding: EdgeInsets.only(top: padding),
+                            padding: EdgeInsets.only(top: padding),
-                              child: Column(
+                            child: Column(
-                                mainAxisAlignment: MainAxisAlignment.center,
+                              mainAxisAlignment: MainAxisAlignment.center,
-                                children: [...body],
+                              children: [...body],
-                              )),
+                            ),
+                          ),
                         ],
                       );
                     },
                   ),
-                )
+                ),
               ],
             ),
-          )
+          ),
         ],
       ),
     );
@@ -359,8 +393,9 @@ class _WearHomeScreenState extends State<WearHomeScreen> {
 
   @override
   void dispose() {
-    super.dispose();
+    _messageSub?.cancel();
     timer?.cancel();
     disposed = true;
+    super.dispose();
   }
 }

firka_wear/lib/ui/wear/screens/login/login_screen.dart

@@ -2,7 +2,8 @@
 
 import 'dart:async';
 
-import 'package:firka_wear/helpers/api/client/kreta_client.dart';
+import 'package:firka_wear/helpers/api/model/grade.dart';
+import 'package:firka_wear/helpers/api/model/timetable.dart';
 import 'package:firka_wear/helpers/extensions.dart';
 import 'package:flutter/material.dart';
 import 'package:watch_connectivity/watch_connectivity.dart';
@@ -47,26 +48,46 @@ class _WearLoginScreen extends State<WearLoginScreen> {
         case "init_data":
           {
             () async {
-              var data = msg["auth"];
+              final auth = msg["auth"] as Map<dynamic, dynamic>?;
-              var tokenModel = TokenModel.fromValues(
+              if (auth == null) return;
-                  data["studentIdNorm"],
+              final tokenModel = TokenModel.fromValues(
-                  data["studentId"],
+                auth["studentIdNorm"] as int,
-                  data["iss"],
+                auth["studentId"] as String,
-                  data["idToken"],
+                auth["iss"] as String,
-                  data["accessToken"],
+                auth["idToken"] as String,
-                  data["refreshToken"],
+                auth["accessToken"] as String,
-                  data["expiryDate"]);
+                auth["refreshToken"] as String,
-
+                auth["expiryDate"] as int,
-              initData.client = KretaClient(tokenModel, initData.isar);
+              );
-
               await initData.isar.writeTxn(() async {
                 await initData.isar.tokenModels.put(tokenModel);
               });
-
+              final lastSyncAt = msg["lastSyncAt"] != null
+                  ? DateTime.parse(msg["lastSyncAt"] as String)
+                  : null;
+              final rawTimetable = msg["timetable"] as List<dynamic>? ?? [];
+              final timetable = rawTimetable
+                  .map(
+                    (e) => Lesson.fromJson(Map<String, dynamic>.from(e as Map)),
+                  )
+                  .toList();
+              final rawGrades = msg["grades"] as List<dynamic>? ?? [];
+              final grades = rawGrades
+                  .map(
+                    (e) => Grade.fromJson(Map<String, dynamic>.from(e as Map)),
+                  )
+                  .toList();
+              await initData.syncStore.save(
+                lastSyncAt: lastSyncAt,
+                timetable: timetable,
+                grades: grades,
+              );
+              if (!context.mounted) return;
               Navigator.of(context).pushAndRemoveUntil(
                 MaterialPageRoute(
-                    builder: (context) => WearHomeScreen(initData)),
+                  builder: (context) => WearHomeScreen(initData),
-                (route) => false, // Remove all previous routes
+                ),
+                (route) => false,
               );
             }();
           }
@@ -94,12 +115,7 @@ class _WearLoginScreen extends State<WearLoginScreen> {
 
   (List<Widget>, double) buildBody(BuildContext context) {
     if (!init) {
-      return (
+      return (<Widget>[], 60);
-        <Widget>[
-
-        ],
-        60
-      );
     }
 
     if (!isPaired) {
@@ -108,11 +124,12 @@ class _WearLoginScreen extends State<WearLoginScreen> {
           Text(
             widget.data.l10n.wear_phone_unpaired,
             textAlign: TextAlign.center,
-            style: wearStyle.fonts.B_14R
+            style: wearStyle.fonts.B_14R.apply(
-                .apply(color: wearStyle.colors.textPrimary),
+              color: wearStyle.colors.textPrimary,
+            ),
           ),
         ],
-        60
+        60,
       );
     }
     if (!isReachable) {
@@ -121,11 +138,12 @@ class _WearLoginScreen extends State<WearLoginScreen> {
           Text(
             widget.data.l10n.wear_phone_disconnected,
             textAlign: TextAlign.center,
-            style: wearStyle.fonts.B_16R
+            style: wearStyle.fonts.B_16R.apply(
-                .apply(color: wearStyle.colors.textPrimary),
+              color: wearStyle.colors.textPrimary,
+            ),
           ),
         ],
-        60
+        60,
       );
     }
 
@@ -135,13 +153,17 @@ class _WearLoginScreen extends State<WearLoginScreen> {
           Text(
             widget.data.l10n.wear_pairing_request_sent,
             textAlign: TextAlign.center,
-            style: wearStyle.fonts.B_16R
+            style: wearStyle.fonts.B_16R.apply(
-                .apply(color: wearStyle.colors.textPrimary),
+              color: wearStyle.colors.textPrimary,
+            ),
           ),
           ElevatedButton(
             onPressed: () async {
               debugPrint("[Watch -> Phone]: ping");
-              watch.sendMessage({'id': 'ping', 'model': initData.devInfo.model});
+              watch.sendMessage({
+                'id': 'ping',
+                'model': initData.devInfo.model,
+              });
             },
             // TODO: This is a placeholder, style this properly
             style: ButtonStyle(
@@ -158,12 +180,14 @@ class _WearLoginScreen extends State<WearLoginScreen> {
                 return wearStyle.colors.accent;
               }),
             ),
-            child: Text(widget.data.l10n.wear_try_again,
+            child: Text(
-                textAlign: TextAlign.center,
+              widget.data.l10n.wear_try_again,
-                style: TextStyle(color: wearStyle.colors.textPrimary)),
+              textAlign: TextAlign.center,
+              style: TextStyle(color: wearStyle.colors.textPrimary),
+            ),
           ),
         ],
-        45
+        45,
       );
     }
 
@@ -173,8 +197,9 @@ class _WearLoginScreen extends State<WearLoginScreen> {
           Text(
             widget.data.l10n.wear_pairing_check_phone,
             textAlign: TextAlign.center,
-            style: wearStyle.fonts.B_16R
+            style: wearStyle.fonts.B_16R.apply(
-                .apply(color: wearStyle.colors.textPrimary),
+              color: wearStyle.colors.textPrimary,
+            ),
           ),
           ElevatedButton(
             onPressed: () async {
@@ -196,22 +221,26 @@ class _WearLoginScreen extends State<WearLoginScreen> {
                 return wearStyle.colors.accent;
               }),
             ),
-            child: Text(widget.data.l10n.wear_try_again,
+            child: Text(
-                textAlign: TextAlign.center,
+              widget.data.l10n.wear_try_again,
-                style: TextStyle(color: wearStyle.colors.textPrimary)),
+              textAlign: TextAlign.center,
+              style: TextStyle(color: wearStyle.colors.textPrimary),
+            ),
           ),
         ],
-        55
+        55,
       );
     }
 
     return (
       <Widget>[
-        Text("Unexpected state",
+        Text(
-            style: TextStyle(color: wearStyle.colors.textPrimary, fontSize: 18),
+          "Unexpected state",
-            textAlign: TextAlign.center),
+          style: TextStyle(color: wearStyle.colors.textPrimary, fontSize: 18),
+          textAlign: TextAlign.center,
+        ),
       ],
-      60
+      60,
     );
   }
 
@@ -225,26 +254,28 @@ class _WearLoginScreen extends State<WearLoginScreen> {
         child: Column(
           children: [
             WatchShape(
-                builder: (context, shape, child) {
+              builder: (context, shape, child) {
-                  return Column(
+                return Column(
-                    mainAxisAlignment: MainAxisAlignment.center,
+                  mainAxisAlignment: MainAxisAlignment.center,
-                    children: <Widget>[
+                  children: <Widget>[
-                      Column(
+                    Column(
-                        mainAxisAlignment: MainAxisAlignment.center,
+                      mainAxisAlignment: MainAxisAlignment.center,
-                        children: <Widget>[
+                      children: <Widget>[
-                          Container(
+                        Container(
-                              padding: EdgeInsets.only(top: offset),
+                          padding: EdgeInsets.only(top: offset),
-                              child: Column(
+                          child: Column(
-                                mainAxisAlignment: MainAxisAlignment.center,
+                            mainAxisAlignment: MainAxisAlignment.center,
-                                children: body,
+                            children: body,
-                              )),
+                          ),
-                        ],
+                        ),
-                      ),
+                      ],
-                      child!,
+                    ),
-                    ],
+                    child!,
-                  );
+                  ],
-                },
+                );
-                child: SizedBox())
+              },
+              child: SizedBox(),
+            ),
           ],
         ),
       ),