Errors due to closure on search by course id endpoints

lib/generated/intl/messages_all.dart

@@ -19,10 +19,10 @@ import 'package:intl/src/intl_helpers.dart';
 import 'messages_en.dart' as messages_en;
 import 'messages_zh_TW.dart' as messages_zh_tw;
 
-typedef LibraryLoader = Future<dynamic> Function();
+typedef Future<dynamic> LibraryLoader();
 Map<String, LibraryLoader> _deferredLibraries = {
-  'en': () => SynchronousFuture(null),
-  'zh_TW': () => SynchronousFuture(null),
+  'en': () => new SynchronousFuture(null),
+  'zh_TW': () => new SynchronousFuture(null),
 };
 
 MessageLookupByLibrary? _findExact(String localeName) {
@@ -41,13 +41,13 @@ Future<bool> initializeMessages(String localeName) {
   var availableLocale =
       Intl.verifiedLocale(localeName, (locale) => _deferredLibraries[locale] != null, onFailure: (_) => null);
   if (availableLocale == null) {
-    return SynchronousFuture(false);
+    return new SynchronousFuture(false);
   }
   var lib = _deferredLibraries[availableLocale];
-  lib == null ? SynchronousFuture(false) : lib();
-  initializeInternalMessageLookup(() => CompositeMessageLookup());
+  lib == null ? new SynchronousFuture(false) : lib();
+  initializeInternalMessageLookup(() => new CompositeMessageLookup());
   messageLookup.addLocale(availableLocale, _findGeneratedMessagesFor);
-  return SynchronousFuture(true);
+  return new SynchronousFuture(true);
 }
 
 bool _messagesExistFor(String locale) {

lib/generated/intl/messages_en.dart

@@ -13,9 +13,9 @@
 import 'package:intl/intl.dart';
 import 'package:intl/message_lookup_by_library.dart';
 
-final messages = MessageLookup();
+final messages = new MessageLookup();
 
-typedef MessageIfAbsent = String Function(String messageStr, List<dynamic> args);
+typedef String MessageIfAbsent(String messageStr, List<dynamic> args);
 
 class MessageLookup extends MessageLookupByLibrary {
   String get localeName => 'en';
@@ -139,8 +139,10 @@ class MessageLookup extends MessageLookupByLibrary {
         "getISchoolPlusCourseAnnouncementError": MessageLookupByLibrary.simpleMessage("Get course announcement error"),
         "getISchoolPlusCourseFile": MessageLookupByLibrary.simpleMessage("Get course files"),
         "getISchoolPlusCourseFileError": MessageLookupByLibrary.simpleMessage("Get course files error"),
-        "getScoreRank": MessageLookupByLibrary.simpleMessage("Getting grade..."),
-        "getScoreRankError": MessageLookupByLibrary.simpleMessage("Getting grade error"),
+        "getScoreRank": MessageLookupByLibrary.simpleMessage("Getting the grades..."),
+        "getScoreRankError": MessageLookupByLibrary.simpleMessage("There\'s an error getting the grades"),
+        "getScoreRankQuestionnaireError": MessageLookupByLibrary.simpleMessage(
+            "There\'s an error getting the grades.\nPlease check if the Online Course Evaluation Questionnaire has been completed"),
         "github": MessageLookupByLibrary.simpleMessage("Github"),
         "graduationSetting": MessageLookupByLibrary.simpleMessage("Graduation credit standard setting"),
         "historicalDimension": MessageLookupByLibrary.simpleMessage("Historical dimension"),

lib/generated/intl/messages_zh_TW.dart

@@ -13,9 +13,9 @@
 import 'package:intl/intl.dart';
 import 'package:intl/message_lookup_by_library.dart';
 
-final messages = MessageLookup();
+final messages = new MessageLookup();
 
-typedef MessageIfAbsent = String Function(String messageStr, List<dynamic> args);
+typedef String MessageIfAbsent(String messageStr, List<dynamic> args);
 
 class MessageLookup extends MessageLookupByLibrary {
   String get localeName => 'zh_TW';
@@ -137,6 +137,7 @@ class MessageLookup extends MessageLookupByLibrary {
         "getISchoolPlusCourseFileError": MessageLookupByLibrary.simpleMessage("取得課程檔案錯誤"),
         "getScoreRank": MessageLookupByLibrary.simpleMessage("取得成績中..."),
         "getScoreRankError": MessageLookupByLibrary.simpleMessage("取得成績錯誤"),
+        "getScoreRankQuestionnaireError": MessageLookupByLibrary.simpleMessage("取得成績錯誤，請確認期末教學評量是否填寫完成"),
         "github": MessageLookupByLibrary.simpleMessage("Github"),
         "graduationSetting": MessageLookupByLibrary.simpleMessage("畢業學分標準設定"),
         "historicalDimension": MessageLookupByLibrary.simpleMessage("歷史向度"),

lib/l10n/intl_en.arb

@@ -57,8 +57,9 @@
   "getISchoolPlusCourseAnnouncementError": "Get course announcement error",
   "getISchoolPlusCourseAnnouncementDetail": "Get course announcement detail...",
   "getISchoolPlusCourseAnnouncementDetailError": "Get course announcement detail error",
-  "getScoreRank": "Getting grade...",
-  "getScoreRankError": "Getting grade error",
+  "getScoreRank": "Getting the grades...",
+  "getScoreRankError": "There's an error getting the grades",
+  "getScoreRankQuestionnaireError": "There's an error getting the grades.\nPlease check if the Online Course Evaluation Questionnaire has been completed",
   "getCalendar": "Getting calendar...",
   "getCalendarError": "Getting calendar error",
   "deleteMessage": "Deleting message...",

lib/l10n/intl_zh_TW.arb

@@ -59,6 +59,7 @@
   "getISchoolPlusCourseAnnouncementDetailError": "取得公告內容錯誤",
   "getScoreRank": "取得成績中...",
   "getScoreRankError": "取得成績錯誤",
+  "getScoreRankQuestionnaireError": "取得成績錯誤，請確認期末教學評量是否填寫完成",
   "getCalendar": "取得行事曆中...",
   "getCalendarError": "取得行事曆錯誤",
   "deleteMessage": "刪除訊息中...",

lib/src/connector/course_connector.dart

@@ -85,7 +85,7 @@ class CourseConnector {
       ConnectorParameter parameter;
       Document tagNode;
       Element node;
-      List<Element> courseNodes, nodes, classmateNodes;
+      List<Element> courseNodes, nodes, classExtraInfoNodes;
       Map<String, String> data = {
         "code": courseId,
         "format": "-1",
@@ -101,38 +101,61 @@ class CourseConnector {
       //取得學期資料
       nodes = courseNodes[0].getElementsByTagName("td");
       SemesterJson semester = SemesterJson();
-      semester.year = nodes[1].text;
-      semester.semester = nodes[2].text;
+
+      // Previously, the title string of the first course table was stored separately in its `<td>` element,
+      // but it currently stores all the information in a row,
+      // e.g. "學號：110310144　　姓名：xxx　　班級：電機三甲　　　 112 學年度 第 1 學期　上課時間表"
+      // so the RegExp is used to filter out only the number parts
+      final titleString = nodes[0].text;
+      final RegExp studentSemesterDetailFilter = RegExp(r'\b\d+\b');
+      final Iterable<RegExpMatch> studentSemesterDetailMatches = studentSemesterDetailFilter.allMatches(titleString);
+      // "studentSemesterDetails" should consist of three numerical values
+      // ex: [110310144, 112, 1]
+      final List<String> studentSemesterDetails = studentSemesterDetailMatches.map((match) => match.group(0)).toList();
+      if (studentSemesterDetails.isEmpty) {
+        throw RangeError("[TAT] course_connector.dart: studentSemesterDetails list is empty");
+      }
+      if (studentSemesterDetails.length < 3) {
+        throw RangeError("[TAT] course_connector.dart: studentSemesterDetails list has range less than 3");
+      }
+      semester.year = studentSemesterDetails[1];
+      semester.semester = studentSemesterDetails[2];
 
       courseExtraInfo.courseSemester = semester;
 
       CourseExtraJson courseExtra = CourseExtraJson();
 
-      courseExtra.name = nodes[3].getElementsByTagName("a")[0].text;
-      if (nodes[3].getElementsByTagName("a")[0].attributes.containsKey("href")) {
-        courseExtra.href = _courseCNHost + nodes[3].getElementsByTagName("a")[0].attributes["href"];
+      nodes = courseNodes[1].getElementsByTagName("tr");
+      final List<String> courseIds = nodes.skip(2).map((node) => node.getElementsByTagName("td")[0].text).toList();
+      final courseIdPosition = courseIds.indexWhere((element) => element.contains(courseId));
+      if (courseIdPosition == -1) {
+        throw StateError('[TAT] course_connector.dart: CourseId not found: $courseId');
+      } else {
+        node = nodes[courseIdPosition + 2];
+      }
+      classExtraInfoNodes = node.getElementsByTagName("td");
+      courseExtra.id = strQ2B(classExtraInfoNodes[0].text).replaceAll(RegExp(r"\s"), "");
+      courseExtra.name = classExtraInfoNodes[1].getElementsByTagName("a")[0].text;
+      courseExtra.openClass = classExtraInfoNodes[7].getElementsByTagName("a")[0].text;
+
+      // if the courseExtraInfo.herf (課程大綱連結) is empty,
+      // the category of the course will be set to ▲ (校訂專業必修) as default
+      if (classExtraInfoNodes[18].text.trim() != "" &&
+          classExtraInfoNodes[18].getElementsByTagName("a")[0].attributes.containsKey("href")) {
+        courseExtra.href = _courseCNHost + classExtraInfoNodes[18].getElementsByTagName("a")[0].attributes["href"];
+        parameter = ConnectorParameter(courseExtra.href);
+        result = await Connector.getDataByPost(parameter);
+        tagNode = parse(result);
+        nodes = tagNode.getElementsByTagName("tr");
+        courseExtra.category = nodes[1].getElementsByTagName("td")[6].text;
+      } else {
+        courseExtra.category = constCourseType[4];
       }
-      courseExtra.category = nodes[7].text; // 取得類別
-      courseExtra.openClass = nodes[9].text;
-      courseExtra.selectNumber = nodes[11].text;
-      courseExtra.withdrawNumber = nodes[12].text;
-      courseExtra.id = courseId;
 
-      courseExtraInfo.course = courseExtra;
+      courseExtra.selectNumber = "s?";
+      courseExtra.withdrawNumber = "w?";
 
-      nodes = courseNodes[2].getElementsByTagName("tr");
-      for (int i = 1; i < nodes.length; i++) {
-        node = nodes[i];
-        classmateNodes = node.getElementsByTagName("td");
-        ClassmateJson classmate = ClassmateJson();
-        classmate.className = classmateNodes[0].text;
-        classmate.studentId = classmateNodes[1].getElementsByTagName("a")[0].text;
-        classmate.href = _courseCNHost + classmateNodes[1].getElementsByTagName("a")[0].attributes["href"];
-        classmate.studentName = classmateNodes[2].text;
-        classmate.studentEnglishName = classmateNodes[3].text;
-        classmate.isSelect = !classmateNodes[4].text.contains("撤選");
-        courseExtraInfo.classmate.add(classmate);
-      }
+      courseExtraInfo.course = courseExtra;
       return courseExtraInfo;
     } catch (e, stack) {
       Log.eWithStack(e.toString(), stack);
@@ -202,7 +225,7 @@ class CourseConnector {
       };
       parameter = ConnectorParameter(_postCourseENUrl);
       parameter.data = data;
-      parameter.charsetName = 'big5';
+      parameter.charsetName = 'utf-8';
       Response response = await Connector.getDataByPostResponse(parameter);
       tagNode = parse(response.toString());
       nodes = tagNode.getElementsByTagName("table");
@@ -317,11 +340,8 @@ class CourseConnector {
           continue;
         }
         //取得課號
-        nodes = nodesOne[0].getElementsByTagName("a"); //確定是否有課號
-        if (nodes.isNotEmpty) {
-          courseMain.id = nodes[0].text;
-          courseMain.href = _courseCNHost + nodes[0].attributes["href"];
-        }
+        courseMain.id = strQ2B(nodesOne[0].text).replaceAll(RegExp(r"\s"), "");
+
         //取的課程名稱/課程連結
         nodes = nodesOne[1].getElementsByTagName("a"); //確定是否有連結
         if (nodes.isNotEmpty) {

lib/src/connector/score_connector.dart

@@ -81,9 +81,14 @@ class ScoreConnector {
       parameter = ConnectorParameter(_scoreAllScoreUrl);
       parameter.data = data;
       result = await Connector.getDataByGet(parameter);
+      final List<String> evalQuestionnaireCheckTexts = ['教學評量', 'Course Evaluation Questionnaire'];
+      if (evalQuestionnaireCheckTexts.any((text) => result.contains(text))) {
+        throw const FormatException(
+            "[TAT] score_connector.dart: evalQuestionnaireCheckTexts was found in request result");
+      }
+
       tagNode = parse(result);
       final h3Nodes = tagNode.getElementsByTagName("h3");
-
       //依照學期取得課程資料
       for (final h3Node in h3Nodes) {
         final siblingOfH3 = h3Node.nextElementSibling;
@@ -112,7 +117,12 @@ class ScoreConnector {
           score.courseId = scoreNode.getElementsByTagName("th")[0].text.replaceAll(RegExp(r"[\s| ]"), "");
           score.nameZh = scoreNode.getElementsByTagName("th")[2].text.replaceAll(RegExp(r"[\s| ]"), "");
           score.nameEn = scoreNode.getElementsByTagName("th")[3].text.replaceAll(RegExp("\n"), "");
-          score.credit = double.parse(scoreNode.getElementsByTagName("th")[6].text);
+          RegExp creditDoubleFilter = RegExp(r'\d+(\.\d+)?');
+          final Iterable<RegExpMatch> creditDoubleMatches =
+              creditDoubleFilter.allMatches(scoreNode.getElementsByTagName("th")[6].text);
+          final List<String> creditDoubles = creditDoubleMatches.map((match) => match.group(0)).toList();
+
+          score.credit = double.parse(creditDoubles[0]);
           score.score = scoreNode.getElementsByTagName("th")[7].text.replaceAll(RegExp(r"[\s| ]"), "");
           courseScore.courseScoreList.add(score);
         }
@@ -187,7 +197,7 @@ class ScoreConnector {
       return courseScoreList;
     } catch (e, stack) {
       Log.eWithStack(e.toString(), stack);
-      return null;
+      rethrow;
     }
   }
 

lib/src/task/score/score_rank_task.dart

@@ -14,14 +14,19 @@ class ScoreRankTask extends ScoreSystemTask<List<SemesterCourseScoreJson>> {
   Future<TaskStatus> execute() async {
     final status = await super.execute();
     if (status == TaskStatus.success) {
-      super.onStart(R.current.getScoreRank);
-      final value = await ScoreConnector.getScoreRankList() as List<SemesterCourseScoreJson>?;
-      super.onEnd();
-      if (value != null) {
+      try {
+        super.onStart(R.current.getScoreRank);
+        final value = await ScoreConnector.getScoreRankList() as List<SemesterCourseScoreJson>?;
+        super.onEnd();
+
         result = value;
         return TaskStatus.success;
-      } else {
-        return super.onError(R.current.getScoreRankError);
+      } catch (e) {
+        if (e is FormatException) {
+          return super.onError(R.current.getScoreRankQuestionnaireError);
+        } else {
+          return super.onError(R.current.getScoreRankError);
+        }
       }
     }
     return status;