Add worker unavailability

[tnsyn]

• Create Unavailability class
• Add Unavailability field for Worker
• Modify worker-add and worker-edit commands to parse unavailability field
• Modify assign command to check Worker unavailability
• Add basic testing for Unavailability

Resolves #62
Resolves #64

[WangZijun97]

Looks great mostly! Just have a couple implementation choices to ask about (open to everyone else to reply too I guess?)

[WangZijun97]

I think role is an optional argument so perhaps no need to check if it is present.
Actually since we are on this topic, I think pay isn't either? But if these are necessary then perhaps updating the User Guide will do.

[tnsyn]

Mm I just thought that it made sense for all workers to have a role so I included it as a compulsory field, but we can take it out also I guess? So if a worker doesn't have any roles specified, then we can assign them to any role in a shift
If we're going to be implementing the Pay calculation feature then we should make Pay compulsory

[WangZijun97]

I think no role should be unable to assign to anything, kind of like when someone new join and havent do the training I guess. Makes sense for pay to be compulsory, so agreed there.

[tnsyn]

Ah ok agreed for role! Will make the change

[WangZijun97]

Thanks for abstracting this out properly xD

[WangZijun97]

I'm not sure if the FULL value should be implemented into the code itself, or should it just be an argument that we accept that from user input that is essentially a wrapper for creating both an AM and a PM unavailability. Not sure if this might result in duplicates when creating shifts of AM and of FULL of the same day?

[tnsyn]

Made the change to convert FULL to AM and PM unavailabilities

[codecov-io]

Codecov Report

Merging #84 into master will decrease coverage by 0.51%.
The diff coverage is 59.11%.

@@             Coverage Diff              @@
##             master      #84      +/-   ##
============================================
- Coverage     65.03%   64.51%   -0.52%     
- Complexity      568      587      +19     
============================================
  Files           100      105       +5     
  Lines          2059     2181     +122     
  Branches        231      248      +17     
============================================
+ Hits           1339     1407      +68     
- Misses          657      702      +45     
- Partials         63       72       +9     

Impacted Files	Coverage Δ	Complexity Δ
...main/java/seedu/address/commons/core/Messages.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
...va/seedu/address/logic/commands/AssignCommand.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...edu/address/logic/commands/ShiftDeleteCommand.java	58.82% <0.00%> (ø)	8.00 <0.00> (ø)
...seedu/address/logic/commands/ShiftEditCommand.java	66.66% <0.00%> (ø)	13.00 <0.00> (ø)
.../seedu/address/logic/commands/UnassignCommand.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...seedu/address/logic/commands/WorkerAddCommand.java	100.00% <ø> (ø)	8.00 <0.00> (ø)
...edu/address/logic/parser/UnavailabilitySyntax.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
src/main/java/seedu/address/ui/WorkerCard.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...in/java/seedu/address/logic/parser/ParserUtil.java	63.00% <11.11%> (-19.20%)	24.00 <1.00> (+1.00)	⬇️
.../java/seedu/address/model/util/SampleDataUtil.java	44.68% <20.00%> (-2.69%)	5.00 <1.00> (+1.00)	⬇️
... and 17 more

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[WangZijun97]

Looks great!