find-free-rooms command

[BasileBux]

I saw the #1 issue and thought I would implement it because it would be really useful.

For command to work, I needed to write the registry part. It fetches the students, teachers and rooms ids and corresponding names. This is a pretty slow operation but it allows the command not to depend on some cached list.

The command arguments are the following:

-e, --end-time string     End time in HH:MM format (default "10:00")
-h, --help                help for find-free-rooms
-m, --semester uint       Semester number (0, 1, 2), 0 is summer (default 1)
-l, --site string         Site location ('Cheseaux' or 'St-Roch') (default "Cheseaux")
-s, --start-time string   Start time in HH:MM format (default "08:00")
-w, --weekday string      Day of the week (e.g., Monday) (default "Monday")

The command is really slow (~15sec execution) because it has to fetch the schedules for all rooms.

There are a few things that could be improved but I don't know what is best or haven't found a solution:

• The output format isn't the best, there probably is a better formatting possible but I don't know how
• There is no way to apply filters on the rooms. Like some rooms might be locked or not correspond to what someone would be looking for. The only thing I can think of would be hard coding the filters

Let me know what you think about it and if you need me to make modifications I will be happy to do so!

[BasileBux]

Actually, there is an issue with even and odd weeks. The week checked is the first of the given semester, when it should check the two first weeks for even / odd weeks