Filter future-dated posts from public views and add unfiltered post access

- all_posts/0 now excludes posts where date > today
- all_tags/0 computed at runtime from filtered posts
- posts_by_tag/1 and recent_posts/1 inherit date filtering
- Add unfiltered_posts/0 to Blog macro and FakeBlog
- Add all_posts_unfiltered/0 to Registry for dashboard use

blogex/lib/blogex.ex

@@ -119,5 +119,6 @@ defmodule Blogex do
   defdelegate get_blog!(blog_id), to: Blogex.Registry
   defdelegate get_blog(blog_id), to: Blogex.Registry
   defdelegate all_posts, to: Blogex.Registry
+  defdelegate all_posts_unfiltered, to: Blogex.Registry
   defdelegate all_tags, to: Blogex.Registry
 end

blogex/lib/blogex/blog.ex

@@ -73,12 +73,17 @@ defmodule Blogex.Blog do
       @doc "Returns the base URL path for this blog."
       def base_path, do: @blog_base_path
 
+      @doc "Returns all compiled posts regardless of published status or date."
+      def unfiltered_posts, do: @posts
+
       @doc "Returns all visible posts, newest first. Drafts are included in dev/test."
       def all_posts do
+        today = Date.utc_today()
+
         if Blogex.show_drafts?() do
-          @posts
+          Enum.filter(@posts, &(not Date.after?(&1.date, today)))
         else
-          Enum.filter(@posts, & &1.published)
+          Enum.filter(@posts, &(&1.published and not Date.after?(&1.date, today)))
         end
       end
 
@@ -86,7 +91,12 @@ defmodule Blogex.Blog do
       def recent_posts(n \\ 5), do: Enum.take(all_posts(), n)
 
       @doc "Returns all unique tags across all published posts."
-      def all_tags, do: @tags
+      def all_tags do
+        all_posts()
+        |> Enum.flat_map(& &1.tags)
+        |> Enum.uniq()
+        |> Enum.sort()
+      end
 
       @doc "Returns all published posts matching the given tag."
       def posts_by_tag(tag) do

blogex/lib/blogex/registry.ex

@@ -37,6 +37,13 @@ defmodule Blogex.Registry do
     |> Enum.sort_by(& &1.date, {:desc, Date})
   end
 
+  @doc "Returns all posts from all blogs (unfiltered), sorted newest first."
+  def all_posts_unfiltered do
+    blogs()
+    |> Enum.flat_map(& &1.unfiltered_posts())
+    |> Enum.sort_by(& &1.date, {:desc, Date})
+  end
+
   @doc "Returns all unique tags across all blogs."
   def all_tags do
     blogs()