require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
require File.expand_path(File.dirname(__FILE__) + '/../../lib/content_link_parser.rb')

describe ContentLinkParser do

  describe "Sample Links Document" do
    before(:each) do
      @base_url = "http://www.baseurl.com/"
      @content = File.read(File.dirname(__FILE__) + "/../samples/sample_html_links.html")
      @content_parser = ContentLinkParser.new("http://sample-links.com/", @content)
    end

    it "should load the sample document" do
      @content.should_not be_nil
      @content.should_not be_empty
    end

    it "should create a content link parser" do
      @content_parser.should_not be_nil
      @content_parser.should be_an_instance_of ContentLinkParser
    end

    describe "using default tags" do
      describe "returning general links" do
        it "should return some links from the sample data" do
          links = @content_parser.links
          links.should_not be_nil
          links.should_not be_empty
        end
        it "should return the correct links" do
          links = @content_parser.links
          links.length.should == 11
        end
      end
      describe "returning image links" do
        it "should return some image links from the sample data" do
          links = @content_parser.images
          links.should_not be_nil
          links.should_not be_empty
        end
        it "should return the correct links" do
          links = @content_parser.images
          links.length.should == 1
        end
      end
      describe "returning related links" do
        it "should return some related links from the sample data" do
          links = @content_parser.related
          links.should_not be_nil
          links.should_not be_empty
        end
        it "should return the correct links" do
          links = @content_parser.related
          links.length.should == 2
        end
      end
      describe "returning script links" do
        it "should return some script links from the sample data" do
          links = @content_parser.scripts
          links.should_not be_nil
          links.should_not be_empty
        end
        it "should return the correct links" do
          links = @content_parser.scripts
          links.length.should == 1
        end
      end
      describe "returning style links" do
        it "should return some style links from the sample data" do
          links = @content_parser.styles
          links.should_not be_nil
          links.should_not be_empty
        end
        it "should return the correct links" do
          links = @content_parser.styles
          links.length.should == 3
        end
      end
      describe "returning unknown link type" do
        it "should return an empty array" do
          links = @content_parser.asdfasdfsadf
          links.should_not be_nil
          links.should be_an_instance_of Array
        end
      end
    end

    describe "returning all link data" do
      it "should return a hash with all link data" do
        link_data = @content_parser.link_data
        link_data.should_not be_nil
        link_data.should be_an_instance_of Hash

        link_data.keys.length.should == 5
        link_data[:links].length.should == 11
      end
      
      it "should return all http and https links by default" do
        links = @content_parser.all_links
        links.count.should == 13
      end
      
      it "should return all http and https links by default" do
        links = @content_parser.all_links
        links.should include("http://sample-links.com/script.js")
        links.should include("http://sample-links.com/stylesheets/punk.css")
      end
      
      it "should return only valid_schemes supplied" do
        links = @content_parser.all_links(:valid_schemes => [:https])
        links.count.should == 1
      end
      
      it "should detect and not return link loops" do
        links = @content_parser.all_links
        links.should include("http://www.ge.com/repeated1/repeated2/nothing/repeated1/")
        links.should_not include("http://www.ge.com/repeated1/repeated2/nothing/repeated1/repeated2")
        links.should include("http://www.ge.com/repeated1/repeated2/nothing/repeated1/asdf/repeated2")
      end
    end

    describe "ignoring default tags" do
      it "should not return any links" do
        parser = ContentLinkParser.new("http://sample-links.com", @content, :ignore_default_tags => true)
        parser.links.should be_empty
      end
    end
  end

  describe "simple style based documents" do
    def create_content(url)
<<-eos
<html>
<head>
<STYLE TYPE="text/css" MEDIA="screen, projection">
  @import url(#{url});
</STYLE>
</head>
</html>
eos
    end
    before :each do
      @base_url = "http://www.baseurl.com/path"
    end
    it "should have the right link for a single quoted style" do
      @content_parser = ContentLinkParser.new("http://sample-links.com/", create_content("'/new'"))
      styles = @content_parser.styles
      styles.length.should==1
      styles[0].should=="/new"
    end
    it "should have the right link for a double quoted style" do
      @content_parser = ContentLinkParser.new("http://sample-links.com/", create_content('"/new"'))
      styles = @content_parser.styles
      styles.length.should==1
      styles[0].should=="/new"
    end
    it "should just leave links with differing quotes alone" do
      @content_parser = ContentLinkParser.new("http://sample-links.com/", create_content('"new\''))
      styles = @content_parser.styles
      styles.length.should==1
      styles[0].should=="\"new'"
    end
  end
end