require 'colorize'
require 'seed_helper/version'
require 'seed_helper/output_formatter'
require 'seed_helper/rake_helper'

class SeedHelper
  extend SeedHelper::OutputFormatter
  extend SeedHelper::RakeHelper

  def self.find_or_create_resource(resource_class, attributes)
    if resource = find_resource(resource_class, attributes)
      resource_already_exists(resource)
    else
      resource = resource_class.new(attributes)
      create_resource(resource)
    end
    return resource
  end

  def self.create_resource(resource)
    if (did_save = resource.save)
      message = "#{resource} successfully created"
      success(message)
    else
      message = "#{resource} failed to create. Errors: #{resource.errors.full_messages}"
      error(message)
    end
    did_save
  end

  def self.bulk_create(klass, &creation_block)
    klass_plural = klass.name.pluralize

    if klass.any?
      resource_already_exists(klass_plural)
    else
      begin
        creation_block.call
        success("Created #{klass_plural}")
      rescue
        error("Failed to create #{klass_plural}: #{$!}")
      end
    end
  end

private

  def self.find_resource(resource_class, attributes)
    # Remove symbols from attributes. They cause SQL to get mad.
    cloned_attributes = Hash[ attributes.map { |k, v| [k, v.is_a?(Symbol) ? v.to_s : v] } ]
    cloned_attributes.delete_if do |key, value|
      # Can't search for password
      [:password, :password_confirmation].include?(key) ||
      # Times are bad for searches
      value.kind_of?(Time) ||
      value.kind_of?(Date) ||
      # As are arrays
      value.kind_of?(Array)
    end
    # Rails 4
    if resource_class.respond_to?(:find_by)
      return resource_class.find_by(cloned_attributes)
    # Rails 3
    else
      return resource_class.where(cloned_attributes).first
    end
  end

end