Weekdays and null handling

bakalari.nim

@@ -46,6 +46,12 @@ type
 const
   iso8601 = initTimeFormat("yyyy-MM-dd'T'HH:mm:sszzz")
 
+let
+  invalidHour = Hour(number: "-", beginTime: "--:--", endTime: "--:--")
+  invalidRoom = Room(name: "---", abbrev: "---")
+  invalidSubject = Subject(name: "---", abbrev: "---")
+  invalidTeacher = Teacher(name: "---", abbrev: "---")
+
 proc newBakalari*(website: Uri, username: string, password: string): Bakalari =
   new result
   result.website = website
@@ -159,10 +165,10 @@ proc timetable*(bakalari: Bakalari, permanent: bool): Timetable =
     var day: Day
     for lessonNode in dayNode{"Atoms"}:
       var lesson: Lesson
-      lesson.hour = hours[lessonNode{"HourId"}.getInt]
-      lesson.subject = subjects[lessonNode{"SubjectId"}.getStr]
-      lesson.teacher = teachers[lessonNode{"TeacherId"}.getStr]
-      lesson.room = rooms[lessonNode{"RoomId"}.getStr]
+      lesson.hour = hours.getOrDefault(lessonNode{"HourId"}.getInt, invalidHour)
+      lesson.room = rooms.getOrDefault(lessonNode{"RoomId"}.getStr, invalidRoom)
+      lesson.subject = subjects.getOrDefault(lessonNode{"SubjectId"}.getStr, invalidSubject)
+      lesson.teacher = teachers.getOrDefault(lessonNode{"TeacherId"}.getStr, invalidTeacher)
       day.lessons.add lesson
     day.dayOfWeek = dayNode{"DayOfWeek"}.getInt
     day.date = dayNode{"Date"}.getStr.parse(iso8601)

bk.nim

@@ -10,6 +10,15 @@ type
 
 const
   defaultConfigFile = getConfigDir() / "bk.json"
+  dayNames = [
+    1: "Mon",
+    2: "Tue",
+    3: "Wed",
+    4: "Thu",
+    5: "Fri",
+    6: "Sat",
+    7: "Sun",
+  ]
 
 proc loadConfig(configFile = defaultConfigFile): Config =
   defaultConfigFile.readFile.parseJson.to(Config)
@@ -46,7 +55,7 @@ proc timetable(
   configFile.saveConfig(config)
   let timetable = baka.timetable(bakalari, permanent)
   for day in timetable.days:
-    stdout.writeLine day.date.format("yyyyMMdd")
+    stdout.writeLine dayNames[day.dayOfWeek] & " " & day.date.format("yyyyMMdd")
     for lesson in day.lessons:
       var line = ""
       line &= lesson.hour.number