class GraphQL::Schema::Argument

def accessible?(context)
  true
end

def authorized?(obj, value, ctx)
  authorized_as_type?(obj, value, ctx, as_type: type)
end

def authorized_as_type?(obj, value, ctx, as_type:)
  if value.nil?
    return true
  end
  if as_type.kind.non_null?
    as_type = as_type.of_type
  end
  if as_type.kind.list?
    value.each do |v|
      if !authorized_as_type?(obj, v, ctx, as_type: as_type.of_type)
        return false
      end
    end
  elsif as_type.kind.input_object?
    return as_type.authorized?(obj, value, ctx)
  end
  # None of the early-return conditions were activated,
  # so this is authorized.
  true
end

def coerce_into_values(parent_object, values, context, argument_values)
  arg_name = graphql_name
  arg_key = keyword
  default_used = false
  if values.key?(arg_name)
    value = values[arg_name]
  elsif values.key?(arg_key)
    value = values[arg_key]
  elsif default_value?
    value = default_value
    default_used = true
  else
    # no value at all
    owner.validate_directive_argument(self, nil)
    return
  end
  if value.nil? && replace_null_with_default?
    value = default_value
    default_used = true
  end
  loaded_value = nil
  coerced_value = context.schema.error_handler.with_error_handling(context) do
    type.coerce_input(value, context)
  end
  # If this isn't lazy, then the block returns eagerly and assigns the result here
  # If it _is_ lazy, then we write the lazy to the hash, then update it later
  argument_values[arg_key] = context.schema.after_lazy(coerced_value) do |resolved_coerced_value|
    if loads && !from_resolver?
      loaded_value = context.query.with_error_handling do
        load_and_authorize_value(owner, coerced_value, context)
      end
    end
    maybe_loaded_value = loaded_value || resolved_coerced_value
    context.schema.after_lazy(maybe_loaded_value) do |resolved_loaded_value|
      owner.validate_directive_argument(self, resolved_loaded_value)
      prepared_value = context.schema.error_handler.with_error_handling(context) do
        prepare_value(parent_object, resolved_loaded_value, context: context)
      end
      # TODO code smell to access such a deeply-nested constant in a distant module
      argument_values[arg_key] = GraphQL::Execution::Interpreter::ArgumentValue.new(
        value: prepared_value,
        definition: self,
        default_used: default_used,
      )
    end
  end
end

def default_value?
  @default_value != NO_DEFAULT
end

def deprecation_reason(text = nil)
  if text
    self.deprecation_reason = text
  else
    super()
  end
end

def deprecation_reason=(new_reason)
  validate_deprecated_or_optional(null: @null, deprecation_reason: new_reason)
  super
end

def description(text = nil)
  if text
    @description = text
  else
    @description
  end
end

def from_resolver?
  @from_resolver
end

def initialize(arg_name = nil, type_expr = nil, desc = nil, required: true, type: nil, name: nil, loads: nil, description: nil, ast_node: nil, default_value: NO_DEFAULT, as: nil, from_resolver: false, camelize: true, prepare: nil, owner:, validates: nil, directives: nil, deprecation_reason: nil, replace_null_with_default: false, &definition_block)
  arg_name ||= name
  @name = -(camelize ? Member::BuildType.camelize(arg_name.to_s) : arg_name.to_s)
  @type_expr = type_expr || type
  @description = desc || description
  @null = required != true
  @default_value = default_value
  if replace_null_with_default
    if !default_value?
      raise ArgumentError, "`replace_null_with_default: true` requires a default value, please provide one with `default_value: ...`"
    end
    @replace_null_with_default = true
  end
  @owner = owner
  @as = as
  @loads = loads
  @keyword = as || (arg_name.is_a?(Symbol) ? arg_name : Schema::Member::BuildType.underscore(@name).to_sym)
  @prepare = prepare
  @ast_node = ast_node
  @from_resolver = from_resolver
  self.deprecation_reason = deprecation_reason
  if directives
    directives.each do |dir_class, dir_options|
      directive(dir_class, **dir_options)
    end
  end
  self.validates(validates)
  if required == :nullable
    self.owner.validates(required: { argument: arg_name })
  end
  if definition_block
    if definition_block.arity == 1
      instance_exec(self, &definition_block)
    else
      instance_eval(&definition_block)
    end
  end
end

def inspect
  "#<#{self.class} #{path}: #{type.to_type_signature}#{description ? " @description=#{description.inspect}" : ""}>"
end

def load_and_authorize_value(load_method_owner, coerced_value, context)
  if coerced_value.nil?
    return nil
  end
  arg_load_method = "load_#{keyword}"
  if load_method_owner.respond_to?(arg_load_method)
    custom_loaded_value = if load_method_owner.is_a?(Class)
      load_method_owner.public_send(arg_load_method, coerced_value, context)
    else
      load_method_owner.public_send(arg_load_method, coerced_value)
    end
    context.schema.after_lazy(custom_loaded_value) do |custom_value|
      if loads
        if type.list?
          loaded_values = custom_value.each_with_index.map { |custom_val, idx|
            id = coerced_value[idx]
            load_method_owner.authorize_application_object(self, id, context, custom_val)
          }
          context.schema.after_any_lazies(loaded_values, &:itself)
        else
          load_method_owner.authorize_application_object(self, coerced_value, context, custom_loaded_value)
        end
      else
        custom_value
      end
    end
  elsif loads
    if type.list?
      loaded_values = coerced_value.map { |val| load_method_owner.load_and_authorize_application_object(self, val, context) }
      context.schema.after_any_lazies(loaded_values, &:itself)
    else
      load_method_owner.load_and_authorize_application_object(self, coerced_value, context)
    end
  else
    coerced_value
  end
end

def prepare_value(obj, value, context: nil)
  if value.is_a?(GraphQL::Schema::InputObject)
    value = value.prepare
  end
  Schema::Validator.validate!(validators, obj, context, value)
  if @prepare.nil?
    value
  elsif @prepare.is_a?(String) || @prepare.is_a?(Symbol)
    if obj.nil?
      # The problem here is, we _used to_ prepare while building variables.
      # But now we don't have the runtime object there.
      #
      # This will have to be called later, when the runtime object _is_ available.
      value
    else
      obj.public_send(@prepare, value)
    end
  elsif @prepare.respond_to?(:call)
    @prepare.call(value, context || obj.context)
  else
    raise "Invalid prepare for #{@owner.name}.name: #{@prepare.inspect}"
  end
end

def replace_null_with_default?
  @replace_null_with_default
end

def statically_coercible?
  return @statically_coercible if defined?(@statically_coercible)
  @statically_coercible = !@prepare.is_a?(String) && !@prepare.is_a?(Symbol)
end

def type
  @type ||= begin
    parsed_type = begin
      Member::BuildType.parse_type(@type_expr, null: @null)
    rescue StandardError => err
      raise ArgumentError, "Couldn't build type for Argument #{@owner.name}.#{name}: #{err.class.name}: #{err.message}", err.backtrace
    end
    # Use the setter method to get validations
    self.type = parsed_type
  end
end

def type=(new_type)
  validate_input_type(new_type)
  # This isn't true for LateBoundTypes, but we can assume those will
  # be updated via this codepath later in schema setup.
  if new_type.respond_to?(:non_null?)
    validate_deprecated_or_optional(null: !new_type.non_null?, deprecation_reason: deprecation_reason)
  end
  @type = new_type
end

def validate_default_value
  coerced_default_value = begin
    # This is weird, but we should accept single-item default values for list-type arguments.
    # If we used `coerce_isolated_input` below, it would do this for us, but it's not really
    # the right thing here because we expect default values in application format (Ruby values)
    # not GraphQL format (scalar values).
    #
    # But I don't think Schema::List#coerce_result should apply wrapping to single-item lists.
    prepped_default_value = if default_value.nil?
      nil
    elsif (type.kind.list? || (type.kind.non_null? && type.of_type.list?)) && !default_value.respond_to?(:map)
      [default_value]
    else
      default_value
    end
    type.coerce_isolated_result(prepped_default_value) unless prepped_default_value.nil?
  rescue GraphQL::Schema::Enum::UnresolvedValueError
    # It raises this, which is helpful at runtime, but not here...
    default_value
  end
  res = type.valid_isolated_input?(coerced_default_value)
  if !res
    raise InvalidDefaultValueError.new(self)
  end
end

def validate_deprecated_or_optional(null:, deprecation_reason:)
  if deprecation_reason && !null
    raise ArgumentError, "Required arguments cannot be deprecated: #{path}."
  end
end

def validate_input_type(input_type)
  if input_type.is_a?(String) || input_type.is_a?(GraphQL::Schema::LateBoundType)
    # Do nothing; assume this will be validated later
  elsif input_type.kind.non_null? || input_type.kind.list?
    validate_input_type(input_type.unwrap)
  elsif !input_type.kind.input?
    raise ArgumentError, "Invalid input type for #{path}: #{input_type.graphql_name}. Must be scalar, enum, or input object, not #{input_type.kind.name}."
  else
    # It's an input type, we're OK
  end
end

def visible?(context)
  true
end