class Lookbook::StringValueCaster

def active_model_cast
  type_class = "ActiveModel::Type::#{@type.camelize}".constantize
  type_class.new.cast(@value)
end

def call
  return @nil if @value.empty?
  public_send(@cast_method)
rescue => exception
  Lookbook.logger.debug "Failed to parse '#{@value}' into a '#{@type}' [#{exception}]"
  raise exception
end

def cast_to_array
  result = YamlParser.call(@value)
  unless result.is_a?(Array)
    raise ParserError.new "'#{@value}' is not a YAML Array"
  end
  result
end

def cast_to_datetime
  DateTime.parse(@value)
end

def cast_to_hash
  result = YamlParser.call(@value)
  unless result.is_a?(Hash)
    raise ParserError.new "'#{@value}' is not a YAML Hash"
  end
  result
end

def cast_to_string
  @value
end

def cast_to_symbol
  @value.delete_prefix(":").to_sym if @value.present?
end

def initialize(value, type = "string")
  @value = value.to_s
  @type = type.to_s.downcase
  @cast_method = :"cast_to_#{@type}"
  unless respond_to?(@cast_method)
    raise ArgumentError.new "'#{@type}' is not a valid value type to cast to."
  end
end