Description

WikiLambdaDiff currently calculates Diffs returning the following format:

{
	"root.Z2K3.Z12K1.1.Z11K2": {
		"type": "change",
		"oldvalue": "Some string",
		"newvalue": "Some monolingual text"
	}
}

Where, for each atomic change, we are extracting:

• The path: root.Z2K3.Z12K1.1.Z11K2
• The operation: change | add | remove
• The old and/or new values

Desired behavior/Acceptance criteria (returned value, expected error, performance expectations, etc.)

Using the "path" and "operation" information, the system should be able to:

• Check if there's any restriction that applies to that tuple
  • E.g. [ "$.root.Z2K3.Z12K1", "add" ] is allowed for anyone: (Anyone can add a new label to a persisted ZObject)
  • E.g. [ "$.root.Z2K2.Z8K3", "add" ] is only allowed for sysadmins: (Only sysadmins can attach testers to a persisted ZFunction)
• Check if the current user privileges allow for this operation
• If the user cannot do a particular operation, don't perform it
• Return an understandable and accessible error report to the user

This task requires:

• Research and understand Mediawiki architecture and standard practices reg. user and group authorization
• Design an architecture proposal for how to integrate this process in the WikiLambda edit/creation process
• Design a format proposal for how/where to record path-operation-group rules that is easily usable from the system and can be easily edited and augmented by the engineers

Completion checklist

• Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Back-end_Task/Bug_completion_checklist