Part 1:
- Use only one message entry for "Please register", that may have to be adapted to reflect the proper /register arguments
- Remove other message entries from code and from the messages files
Breaking change: reg_email_msg is also removed
- Add default method to ExecutableCommand interface that allows to define the message key to show if a command's arguments are invalid. If not defined the behavior is as before: show the output of /<command> help
- Use translatable "no permission" message instead of hardcoded one
- Split sole setting to two: one defining the registration type, and one defining what the register command should take as second argument
- Contains ugly code that will be fixed with a later issue
- Introduce registration executors: one for each registration variant; each extending class implements one registration variant and worries about that method's details only
- AsyncRegister receives the player and a registration executor
- An exception is thrown e.g. when running '/authme email player' where 'player' does not exist because CacheLoader#load may not ever return null (see Javadoc). Therefore, we are forced to wrap the PlayerAuth in an Optional.
- Use Java 8 Optional instead of Google's
- Replace CommandService and ProcessService with CommonService: a service that offers our typical needs to work with settings, messages and permissions
- Remove validation methods from CommonService: inject ValidationService directly. Validation methods are not used very frequently and therefore don't belong in CommonService. Their presence was a relict from our architecture before injection was used.
- Ugly workaround due to #1014: need to have EnumSetProperty extend from StringListProperty type so that it is exported in a proper manner (as a string list). To get an enum Set we need to call a dedicated method on EnumSetProperty for the time being.
Mostly minor changes:
- Add deprecated javadoc tag on deprecated members
- Reduce duplication (FlatFile, BackupService, ...)
- Make methods static
- Reduce size of anonymous classes
- Replace name with displayName in PermissionsSystemType (avoids confusing with Enum name())
- Tabs to spaces
- Merge if statements
Code from third-party sources (BCryptService, BinTools, PHPBB) not modified.
