class Settings

# File lib/settings/settings.rb, line 10
def self.build(source=nil)
  source ||= implementer_source

  data_source = DataSource::Build.(source)

  data = data_source.get_data

  data = Casing::Underscore.(data)

  instance = new(data)

  instance
end

# File lib/settings/settings.rb, line 24
def self.implementer_source
  unless self.respond_to?(:data_source)
    return nil
  end

  self.data_source
end

# File lib/settings/settings.rb, line 6
def initialize(data)
  @data = data
end

# File lib/settings/settings.rb, line 72
def assign_value(receiver, attribute, value, strict=false)
  Settings::Setting::Assignment.assign(receiver, attribute, value, strict)
end

# File lib/settings/settings.rb, line 76
def get(*namespace)
  namespace.flatten!

  keys = namespace.map { |n| n.is_a?(Symbol) ? n.to_s : n }

  value = nil
  if keys.empty?
    value = data
  else
    value = data.dig(*keys)
  end

  value
end

# File lib/settings/settings.rb, line 32
def set(receiver, *namespace, attribute: nil, strict: true)
  unless attribute.nil?
    value = set_attribute(receiver, attribute, namespace, strict)
  else
    receiver = set_object(receiver, namespace, strict)
  end
  value || receiver
end

# File lib/settings/settings.rb, line 41
def set_attribute(receiver, attribute, namespace, strict)
  attribute = attribute.to_s if attribute.is_a?(Symbol)

  attribute_namespace = namespace.dup
  attribute_namespace << attribute

  value = get(attribute_namespace)

  if value.nil?
    raise Settings::Error, "#{attribute_namespace} not found in the data"
  end

  Settings::Setting::Assignment::Attribute.assign(receiver, attribute.to_sym, value, strict)

  value
end

# File lib/settings/settings.rb, line 58
def set_object(receiver, namespace, strict)
  data = get(namespace)

  if data.nil?
    raise Settings::Error, "#{namespace} not found in the data"
  end

  data.each do |attribute, value|
    Settings::Setting::Assignment::Object.assign(receiver, attribute.to_sym, value, strict)
  end

  receiver
end