require 'action_controller'
require 'action_controller/test_process'

require 'will_paginate'
WillPaginate.enable_actionpack

ActionController::Routing::Routes.draw do |map|
  map.connect 'dummy/page/:page', :controller => 'dummy'
  map.connect 'dummy/dots/page.:page', :controller => 'dummy', :action => 'dots'
  map.connect ':controller/:action/:id'
end

ActionController::Base.perform_caching = false

class WillPaginate::ViewTestCase < Test::Unit::TestCase
  def setup
    super
    @controller  = DummyController.new
    @request     = @controller.request
    @html_result = nil
    @template    = '<%= will_paginate collection, options %>'
    
    @view = ActionView::Base.new
    @view.assigns['controller'] = @controller
    @view.assigns['_request']   = @request
    @view.assigns['_params']    = @request.params
  end

  def test_no_complain; end
  
  protected

    def paginate(collection = {}, options = {}, &block)
      if collection.instance_of? Hash
        page_options = { :page => 1, :total_entries => 11, :per_page => 4 }.merge(collection)
        collection = [1].paginate(page_options)
      end

      locals = { :collection => collection, :options => options }

      if defined? ActionView::Template
        # Rails 2.1
        args = [ ActionView::Template.new(@view, @template, false, locals, true, nil) ]
      else
        # older Rails versions
        args = [nil, @template, nil, locals]
      end
      
      @html_result = @view.render_template(*args)
      @html_document = HTML::Document.new(@html_result, true, false)

      if block_given?
        classname = options[:class] || WillPaginate::ViewHelpers.pagination_options[:class]
        assert_select("div.#{classname}", 1, 'no main DIV', &block)
      end
    end

    def response_from_page_or_rjs
      @html_document.root
    end

    def validate_page_numbers expected, links, param_name = :page
      param_pattern = /\W#{CGI.escape(param_name.to_s)}=([^&]*)/
      
      assert_equal(expected, links.map { |e|
        e['href'] =~ param_pattern
        $1 ? $1.to_i : $1
      })
    end

    def assert_links_match pattern, links = nil, numbers = nil
      links ||= assert_select 'div.pagination a[href]' do |elements|
        elements
      end

      pages = [] if numbers
      
      links.each do |el|
        assert_match pattern, el['href']
        if numbers
          el['href'] =~ pattern
          pages << $1.to_i
        end
      end

      assert_equal numbers, pages, "page numbers don't match" if numbers
    end

    def assert_no_links_match pattern
      assert_select 'div.pagination a[href]' do |elements|
        elements.each do |el|
          assert_no_match pattern, el['href']
        end
      end
    end
end

class DummyRequest
  attr_accessor :symbolized_path_parameters
  
  def initialize
    @get = true
    @params = {}
    @symbolized_path_parameters = { :controller => 'foo', :action => 'bar' }
  end
  
  def get?
    @get
  end

  def post
    @get = false
  end

  def relative_url_root
    ''
  end

  def params(more = nil)
    @params.update(more) if more
    @params
  end
end

class DummyController
  attr_reader :request
  attr_accessor :controller_name
  
  def initialize
    @request = DummyRequest.new
    @url = ActionController::UrlRewriter.new(@request, @request.params)
  end
  
  def url_for(params)
    @url.rewrite(params)
  end
end

module HTML
  Node.class_eval do
    def inner_text
      children.map(&:inner_text).join('')
    end
  end
  
  Text.class_eval do
    def inner_text
      self.to_s
    end
  end

  Tag.class_eval do
    def inner_text
      childless?? '' : super
    end
  end
end