Referees 2018/generic files

[idanstark42]

In order to give people a better control over the files they can choose to play and when to play them at the background of the clock. See readme part named "Selecting mp3 files" for full explanation.

[rikkertkoppes]

I won't merge it like this, although the idea is good.

Clock is a very simple application that should work by just opening the index.html from a file system, without any server.

In fact, it is used as such in schools, sports clubs and also as a timer for FLL judging. Your changes makes it all dependent on a server. This is not a bad thing, as long as it does not break the ability to work from a file system, which it does.

So, in the very least, the $http communication should be more robust and degrade gracefully. I can also see a road in which a custom mp3 is included in the mp3 folder and specified in the config file.

[rikkertkoppes]

There are also some general problems with the implementation

• the file track.mp3 needs to be renamed to track_150.mp3 for the default settings to work. This is not user friendly as it has to be renamed every time you change the countdown time (I like the idea of having a generic name for the start and end, track_start.mp3 and track_stop.mp3, as well as optional time-bound files, for example a special extra drum roll at half time or something)
• the audio does not resume when pausing and resuming the clock
• the stop track only seems to play for 1 second, rather than its full length (7 seconds)

[rikkertkoppes]

Also, maybe you can have a look at #13 ? Maybe also #4, but I'm not sure how that would fit the current approach.

Thinking out loud for some use cases

• we could want special tracks at start and end (track_start.mp3)
• we could want special tracks at special positions (track_75.mp3 or track_50p.mp3) the latter would be a percentage of time
• we could want a start track, followed by a repeating part, then a stop track. (track_start.mp3, track_after_start_loop.mp3, track_stop.mp3). I am totally making this up as I am writing, we might want a nice discussion on slack...). In fact, I'm moving this to over there.

[rikkertkoppes]

spelling: choose

[idanstark42]

Moved to PR #20