require 'json'
require 'randexp'

require 'hashie'

require 'digest/sha1'

module Attributor

  require_relative 'attributor/exceptions'
  require_relative 'attributor/attribute'
  require_relative 'attributor/type'
  require_relative 'attributor/dsl_compiler'
  require_relative 'attributor/hash_dsl_compiler'
  require_relative 'attributor/attribute_resolver'

  require_relative 'attributor/example_mixin'

  require_relative 'attributor/extensions/randexp'


  # hierarchical separator string for composing human readable attributes
  SEPARATOR = '.'.freeze
  DEFAULT_ROOT_CONTEXT = ['$'].freeze

  # @param type [Class] The class of the type to resolve
  #
  def self.resolve_type(attr_type, options={}, constructor_block=nil)
    if attr_type < Attributor::Type
      klass = attr_type
    else
      name = attr_type.name.split("::").last # TOO EXPENSIVE?

      klass = const_get(name) if const_defined?(name)
      raise AttributorException.new("Could not find class with name #{name}") unless klass
      raise AttributorException.new("Could not find attribute type for: #{name} [klass: #{klass.name}]")  unless  klass < Attributor::Type
    end

    if klass.constructable?
      return klass.construct(constructor_block, options)
    end

    raise AttributorException.new("Type: #{attr_type} does not support anonymous generation") if constructor_block

    klass
  end

  def self.type_name(type)
    return self.type_name(type.class) unless type.kind_of?(::Class)

    type.ancestors.find { |k| k.name && !k.name.empty? }.name
  end

  def self.humanize_context( context )
    return "" unless context

    if context.kind_of? ::String
      context = Array(context)
    end

    unless context.is_a? Enumerable
      raise "INVALID CONTEXT!!! (got: #{context.inspect})"
    end

    begin
      return context.join('.')
    rescue Exception => e
      raise "Error creating context string: #{e.message}"
    end
  end

  def self.errorize_value( value )
    inspection =value.inspect
    inspection = inspection[0..500]+ "...[truncated]" if inspection.size>500
    inspection
  end

  MODULE_PREFIX       = "Attributor\:\:".freeze
  MODULE_PREFIX_REGEX = ::Regexp.new(MODULE_PREFIX)

  require_relative 'attributor/families/numeric'
  require_relative 'attributor/families/temporal'

  require_relative 'attributor/types/container'
  require_relative 'attributor/types/object'

  require_relative 'attributor/types/bigdecimal'
  require_relative 'attributor/types/integer'
  require_relative 'attributor/types/string'
  require_relative 'attributor/types/symbol'
  require_relative 'attributor/types/boolean'
  require_relative 'attributor/types/time'
  require_relative 'attributor/types/date'
  require_relative 'attributor/types/date_time'
  require_relative 'attributor/types/regexp'
  require_relative 'attributor/types/float'
  require_relative 'attributor/types/collection'
  require_relative 'attributor/types/hash'
  require_relative 'attributor/types/model'
  require_relative 'attributor/types/struct'
  require_relative 'attributor/types/class'


  require_relative 'attributor/types/csv'
  require_relative 'attributor/types/ids'

  # TODO: move these to 'optional types' or 'extra types'... location
  require_relative 'attributor/types/tempfile'
  require_relative 'attributor/types/file_upload'
  require_relative 'attributor/types/uri'

end