Fix bugs #189, #206, #214, #219 + PPP

[Michaeliaaa]

Fix #189, #206, #214 , #219

[codecov]

Codecov Report

Merging #234 into master will decrease coverage by 0.04%.
The diff coverage is 50.00%.

@@             Coverage Diff              @@
##             master     #234      +/-   ##
============================================
- Coverage     62.33%   62.29%   -0.05%     
  Complexity      768      768              
============================================
  Files           120      120              
  Lines          2979     2981       +2     
  Branches        347      348       +1     
============================================
  Hits           1857     1857              
- Misses         1004     1005       +1     
- Partials        118      119       +1     

Impacted Files	Coverage Δ	Complexity Δ
...ic/commands/appointment/AddAppointmentCommand.java	50.00% <ø> (ø)	8.00 <0.00> (ø)
...c/commands/appointment/EditAppointmentCommand.java	85.71% <ø> (ø)	16.00 <0.00> (ø)
...va/seedu/address/model/history/CommandHistory.java	96.66% <ø> (ø)	16.00 <0.00> (ø)
.../java/seedu/address/model/util/SampleDataUtil.java	39.28% <ø> (ø)	2.00 <0.00> (ø)
...in/java/seedu/address/logic/parser/ParserUtil.java	89.58% <33.33%> (-1.91%)	34.00 <0.00> (ø)
...address/model/appointment/AppointmentDateTime.java	77.77% <100.00%> (ø)	11.00 <0.00> (ø)

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[Michaeliaaa]

Do not merge yet. I will need to modify mine after Moon's.

[Michaeliaaa]

I realised when I merged Moon's PR to work on the modifications, the format is still following the old one so I updated the format here.

[gsmoon97]

Hey Michaelia! The pr looks great. There's just one more thing to note about the AppointmentDateTime. Currently, AppointmentDateTime also accepts years beyond 19XX and 2XXX. Also, technically 30 or 31 might not be a valid input for day, depending on the month. So I was thinking you could maybe revert the changes from lines 17 to 21.

[Michaeliaaa]

Hey Michaelia! The pr looks great. There's just one more thing to note about the AppointmentDateTime. Currently, AppointmentDateTime also accepts years beyond 19XX and 2XXX. Also, technically 30 or 31 might not be a valid input for day, depending on the month. So I was thinking you could maybe revert the changes from lines 17 to 21.

I forgot about it, lemme do amendments to it.