I will try to make permissions rework.

Here I post some information about what and how I want to change.
It would be nice if you provide me some feedback, then we figure out how new permissions will look like.

Firstly I want to focused on iOS implementation.

Here is our current flow graph for permission asking:

So my suggestions:

• move more logic from ScopePermission (SP) to expo-permission (P). Now, the decision on how to check given permission came from ScopePermission (SP). This solution forced a lot of jumps between SP and P. If we move decision logic to P we could treat SP like iOS extension, which provides API for permissions per experience.
• treat "particle permission" as a full-fledged permission type (Location in the foreground will be a subtype of LocationPemission).
  We could make a permission family, for example:
  LocationPermission will be divided into foreground and background permission, so the user will be able to ask for all 3 permissions (LocationPermission will still be available to the user).
  • If he asked for the main permission, this will be treated as asking for all children permissions.
  • In a situation when he asked for child permission and the current platform doesn't support the required type of permission, the system will ask for the main permission.

For now, I will try to refactor the current permissions code to make it more readable.