Add Schedule Feature (Partial)

[glatiuden]

Part 1 of #133

Changelog

• Added Event (an abstract superclass of Appointment and Schedule). Purpose of this superclass to allow the new proposed Timetable Ui to show both Appointment and Schedule.
• Slight modification to Appointment to inherit from Event
• Added Schedule and its respective variable classes
• Added EventList, ScheduleList and ScheduleTracker
• Added AddScheduleCommand and DeleteScheduleCommand and its respective Parser.

Upon merging this PR, the next PR will include (Completed):

• ListScheduleCommand and EditScheduleCommand and its respective parsers
• Timetable Ui

In the upcoming PR:

• Modify ModelManager constructor to take in ScheduleTracker (not implemented in this PR to avoid huge PR)
• JUnit test cases for the new Java classes
• Reminder and its respective commands

[jared98lyj]

LGTM

[kingsleykuan]

LGTM but it seems there are some merge conflicts. Also see my comment below (no change necessarily required).

[kingsleykuan]

I am slightly concerned about having Model extend ScheduleModel in terms of design, but I understand why it's done this way for abstraction and to maintain compatibility. If there is no better solution then it LGTM. Perhaps in a future PR we can abstract the different model interfaces out (for tutor, appointment, etc) and then have Model extend all of them for consistency.

[glatiuden]

Noted, then I'll shift it back to Model for meantime. If we decided to adopt this approach then I'll reinstate back in this file

[glatiuden]

Fixed merge conflicts and shifting of Schedule's interface methods to Model.java.

[codecov-io]

Codecov Report

Merging #142 (b92685e) into master (06ab821) will decrease coverage by 3.30%.
The diff coverage is 9.82%.

@@             Coverage Diff              @@
##             master     #142      +/-   ##
============================================
- Coverage     51.97%   48.67%   -3.31%     
- Complexity      621      625       +4     
============================================
  Files           143      158      +15     
  Lines          2832     3059     +227     
  Branches        329      359      +30     
============================================
+ Hits           1472     1489      +17     
- Misses         1258     1467     +209     
- Partials        102      103       +1     

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/seedu/address/MainApp.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...main/java/seedu/address/commons/core/Messages.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
.../commands/schedulecommands/AddScheduleCommand.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...mmands/schedulecommands/DeleteScheduleCommand.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...in/java/seedu/address/logic/parser/ParserUtil.java	69.15% <0.00%> (-7.13%)	24.00 <0.00> (ø)
...seedu/address/logic/parser/TutorTrackerParser.java	46.87% <0.00%> (-3.13%)	11.00 <0.00> (ø)
...arser/scheduleparser/AddScheduleCommandParser.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...er/scheduleparser/DeleteScheduleCommandParser.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...main/java/seedu/address/model/event/EventList.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...odel/event/exceptions/DuplicateEventException.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
... and 28 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 06ab821...b92685e. Read the comment docs.

[kingsleykuan]

LGTM

[jared98lyj]

LGTM

[jared98lyj]

LGTM