Provides metatags listing functionality.

lib/rollin.rb

@@ -7,6 +7,8 @@
 require "rollin/article"
 require "rollin/month_archive"
 require "rollin/year_archive"
+require "rollin/metatag_key"
+require "rollin/metatag_value"
 
 module Rollin
 end

lib/rollin/article.rb

@@ -12,13 +12,14 @@ def initialize(source_file)
   end
 
   def title
-    metatags[:title] || @title_from_filename
+    metatags['title'] || @title_from_filename
   end
 
   def matches?(search)
-    search = search.clone
-
     return true if @id == search
+    return false if @searh.is_a? String
+
+    search = search.clone
 
     if search.has_key?(:year)
       return false if search.delete(:year) != @year
@@ -30,6 +31,8 @@ def matches?(search)
       end
     end
 
+    search = search.inject({}) { |memo, (k,v)| memo[k.to_s] = v; memo }
+
     if search.keys.empty?
       return true
     else
@@ -47,7 +50,7 @@ def metatags
 
       if content =~ /\A(---\s*\n.*?\n?)^(---\s*$\n?)/m
         content = $POSTMATCH
-        return YAML.safe_load($1).inject({}){|memo,(k,v)| memo[k.to_sym] = v; memo}
+        return YAML.safe_load($1)
       end
     rescue SyntaxError => e
       puts "YAML Exception reading #{File.join(@source_file)}: #{e.message}"

lib/rollin/blog.rb

@@ -15,6 +15,21 @@ def articles(search=nil)
     end
   end
 
+  def metatags
+    metatag_labels = articles.map do |article|
+      article.metatags.keys
+    end.flatten.uniq
+
+    metatag_labels.map do |metatag_label|
+      values = articles.select { |article| article.metatags.has_key?(metatag_label) }.map do |article|
+        article.metatags[metatag_label]
+      end.flatten.uniq.map do |metatag_content|
+        Rollin::MetatagValue.new(metatag_content, articles(metatag_label => metatag_content))
+      end
+      Rollin::MetatagKey.new(metatag_label, values)
+    end
+  end
+
   def annual_archive
     monthly_archive.map { |month_archive| month_archive.year }.uniq.map do |year|
       Rollin::YearArchive.new(year, monthly_archive.select { |aMonth| aMonth.year == year })

lib/rollin/metatag_key.rb

@@ -0,0 +1,7 @@
+class Rollin::MetatagKey
+  attr_reader :label, :values
+
+  def initialize(label, values)
+    @label, @values = label, values
+  end
+end

lib/rollin/metatag_value.rb

@@ -0,0 +1,7 @@
+class Rollin::MetatagValue
+  attr_reader :content, :articles
+
+  def initialize(content, articles)
+    @content, @articles = content, articles
+  end
+end

spec/rollin_spec.rb

@@ -32,7 +32,7 @@
     end
 
     it 'exposes the list of defined metatags' do
-      article_with_custom_metatags.metatags.should == { tags: ['manero', 'massa', 'bacana'], published: false }
+      article_with_custom_metatags.metatags.should == { 'tags' => ['manero', 'massa', 'bacana'], 'published' => false }
     end
   end
 
@@ -47,11 +47,17 @@
     end
 
     it 'searches by metatags' do
-      blog.article(tags: 'manero').should == article_with_custom_metatags
-      blog.articles(tags: 'manero').should == [ article_with_custom_metatags ]
+      blog.article(:tags => 'manero').should == article_with_custom_metatags
+      blog.article('tags' => 'manero').should == article_with_custom_metatags
 
-      blog.article(published: false).should == article_with_custom_metatags
-      blog.articles(published: false).should == [ article_with_custom_metatags ]
+      blog.articles(:tags => 'manero').should == [ article_with_custom_metatags ]
+      blog.articles('tags' => 'manero').should == [ article_with_custom_metatags ]
+
+      blog.article(:published => false).should == article_with_custom_metatags
+      blog.article('published' => false).should == article_with_custom_metatags
+
+      blog.articles(:published => false).should == [ article_with_custom_metatags ]
+      blog.articles('published' => false).should == [ article_with_custom_metatags ]
     end
 
     it 'searches by date' do
@@ -66,6 +72,35 @@
     end
   end
 
+  context 'inquiring metatags' do
+    let (:first_article) { blog.articles[0] }
+    let (:second_article) { blog.articles[1] }
+    let (:third_article) { blog.articles[2] }
+
+    it 'shows a list of existent metatags' do
+      blog.should have(3).metatags
+
+      blog.metatags[0].label.should == 'title'
+      blog.metatags[0].should have(1).values
+      blog.metatags[0].values[0].content.should == 'This is a super post!'
+      blog.metatags[0].values[0].articles.should == [ second_article ]
+
+      blog.metatags[1].label.should == 'tags'
+      blog.metatags[1].should have(3).values
+      blog.metatags[1].values[0].content.should == 'manero'
+      blog.metatags[1].values[0].articles.should == [ third_article ]
+      blog.metatags[1].values[1].content.should == 'massa'
+      blog.metatags[1].values[1].articles.should == [ third_article ]
+      blog.metatags[1].values[2].content.should == 'bacana'
+      blog.metatags[1].values[2].articles.should == [ third_article ]
+
+      blog.metatags[2].label.should == 'published'
+      blog.metatags[2].should have(1).values
+      blog.metatags[2].values[0].content.should == false
+      blog.metatags[2].values[0].articles.should == [ third_article ]
+    end
+  end
+
   context 'listing articles' do
     let (:first_article) { TestArticle.new(id: '2013_05_01_My_first_post', title: 'My first post', date: Date.new(2013, 5, 1)) }
     let (:second_article) { TestArticle.new(id: '2013_05_02_My_second_post', title: 'This is a super post!', date: Date.new(2013, 5, 2)) }