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Step flow manager for Elixir applications
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lib/step_flow/controllers/roles.ex
defmodule StepFlow.Controllers.Roles do
@moduledoc false
@doc """
Returns whether the roles allow to execute the action over the entity.
"""
def has_right?(roles, entity, action) do
Enum.concat(for %{rights: rights} <- roles, do: rights)
|> Enum.filter(fn right ->
matching_or_wildcard?(entity, right.entity) &&
Enum.any?(right.action, fn right_action -> Enum.member?([action, "*"], right_action) end)
end)
|> Enum.any?()
end
@doc """
Looks for the roles bound to the specified action to execute over the entity type, and returns the related rights.
"""
def get_rights_for_entity_type_and_action(roles, entity_type, action) do
Enum.concat(for %{rights: rights} <- roles, do: rights)
|> Enum.filter(fn right ->
right_entity_type =
String.split(right.entity, "::")
|> List.first()
matching_or_wildcard?(entity_type, right_entity_type) &&
Enum.any?(right.action, fn right_action -> Enum.member?([action, "*"], right_action) end)
end)
end
defp matching_or_wildcard?(reference, object) do
right_entity_type =
String.split(reference, "::")
|> List.first()
right_entity_type_wildcarded = right_entity_type <> "::*"
match?(^reference, object) || match?(^right_entity_type_wildcarded, object) || object == "*"
end
end