tryzealot/zealot

# frozen_string_literal: true

class ZealotSchema < GraphQL::Schema
  mutation(Types::MutationType)
  query(Types::QueryType)

  # For batch-loading (see https://graphql-ruby.org/dataloader/overview.html)
  use GraphQL::Dataloader

  # GraphQL-Ruby calls this when something goes wrong while running a query:
  def self.type_error(err, context)
    # if err.is_a?(GraphQL::InvalidNullError)
    #   # report to your bug tracker here
    #   return nil
    # end
    super
  end

  # Union and Interface Resolution
  def self.resolve_type(abstract_type, obj, ctx)
    # TODO: Implement this method
    # to return the correct GraphQL object type for `obj`
    raise(GraphQL::RequiredImplementationMissingError)
  end

  # Stop validating when it encounters this many errors:
  validate_max_errors(100)

  # Relay-style Object Identification:

  # Return a string UUID for `object`
  def self.id_from_object(object, type_definition, query_ctx)
    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
    object_id = object.to_global_id.to_s
    # Remove this redundant prefix to make IDs shorter:
    object_id = object_id.sub("gid://#{GlobalID.app}/", "")
    encoded_id = Base64.urlsafe_encode64(object_id)
    # Remove the "=" padding
    encoded_id = encoded_id.sub(/=+/, "")
    # Add a type hint
    type_hint = type_definition.graphql_name.first
    "#{type_hint}_#{encoded_id}"
  end

  # Given a string UUID, find the object
  def self.object_from_id(encoded_id_with_hint, query_ctx)
    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
    # Split off the type hint
    _type_hint, encoded_id = encoded_id_with_hint.split("_", 2)
    # Decode the ID
    id = Base64.urlsafe_decode64(encoded_id)
    # Rebuild it for Rails then find the object:
    full_global_id = "gid://#{GlobalID.app}/#{id}"
    GlobalID::Locator.locate(full_global_id)
  end

  # Relay-style Object Identification:

  # Return a string UUID for `object`
  def self.id_from_object(object, type_definition, query_ctx)
    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
    object.to_gid_param
  end

  # Given a string UUID, find the object
  def self.object_from_id(global_id, query_ctx)
    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
    GlobalID.find(global_id)
  end
end