module DeviseTokenAuth::Concerns::ResourceFinder

def database_adapter
  @database_adapter ||= begin
    rails_version = [Rails::VERSION::MAJOR, Rails::VERSION::MINOR].join(".")
    adapter =
      if rails_version >= "6.1"
        resource_class.try(:connection_db_config)&.try(:adapter)
      else
        resource_class.try(:connection_config)&.try(:[], :adapter)
      end
  end
end

def find_resource(field, value)
  @resource = if database_adapter&.include?('mysql')
                # fix for mysql default case insensitivity
                resource_class.where("BINARY #{field} = ? AND provider= ?", value, provider).first
              else
                resource_class.dta_find_by(field => value, 'provider' => provider)
              end
end

def get_case_insensitive_field_from_resource_params(field)
  # honor Devise configuration for case_insensitive keys
  q_value = resource_params[field.to_sym]
  if resource_class.case_insensitive_keys.include?(field.to_sym)
    q_value.downcase!
  end
  if resource_class.strip_whitespace_keys.include?(field.to_sym)
    q_value.strip!
  end
  q_value
end

def provider
  'email'
end

def resource_class(m = nil)
  mapping = if m
              Devise.mappings[m]
            else
              Devise.mappings[resource_name] || Devise.mappings.values.first
            end
  mapping.to
end