From 63099ec5c088a0d3f801a264c63f49433d610782 Mon Sep 17 00:00:00 2001
From: Tom Preston-Werner <tom@mojombo.com>
Date: Tue, 20 Apr 2010 18:19:54 -0700
Subject: [PATCH] delete_page

---
 lib/gollum/wiki.rb | 27 +++++++++++++++++++++++++++
 test/test_wiki.rb  | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+)

diff --git a/lib/gollum/wiki.rb b/lib/gollum/wiki.rb
index 7ecbca77..a850f4d2 100644
--- a/lib/gollum/wiki.rb
+++ b/lib/gollum/wiki.rb
@@ -77,6 +77,33 @@ module Gollum
       index.commit(commit[:message], [pcommit], actor)
     end
 
+    # Public: Delete a page.
+    #
+    # page   - The Gollum::Page to delete.
+    # commit - The commit Hash details:
+    #          :message - The String commit message.
+    #          :author  - The String author full name.
+    #          :email   - The String email address.
+    #
+    # Returns the String SHA1 of the newly written version.
+    def delete_page(page, commit)
+      pcommit = @repo.commit('master')
+      map = tree_map(pcommit.tree)
+
+      parts = page.path.split('/')
+      name = parts.pop
+      container = nil
+      parts.each do |part|
+        container = map[part]
+      end
+      (container || map).delete(name)
+
+      index = tree_map_to_index(map)
+
+      actor = Grit::Actor.new(commit[:name], commit[:email])
+      index.commit(commit[:message], [pcommit], actor)
+    end
+
     #########################################################################
     #
     # Internal Methods
diff --git a/test/test_wiki.rb b/test/test_wiki.rb
index 8fbb2b70..c5e6982c 100644
--- a/test/test_wiki.rb
+++ b/test/test_wiki.rb
@@ -55,6 +55,39 @@ context "Wiki page writing" do
     assert_equal "tom@github.com", @wiki.repo.commits.first.author.email
   end
 
+  test "delete root page" do
+    commit = { :message => "Gollum page",
+               :name => "Tom Preston-Werner",
+               :email => "tom@github.com" }
+    @wiki.write_page("Gollum", :markdown, "# Gollum", commit)
+
+    page = @wiki.page("Gollum")
+    @wiki.delete_page(page, commit)
+
+    assert_equal 2, @wiki.repo.commits.size
+    assert_nil @wiki.page("Gollum")
+  end
+
+  test "delete nested page" do
+    commit = { :message => "Gollum page",
+               :name => "Tom Preston-Werner",
+               :email => "tom@github.com" }
+
+    index = @wiki.repo.index
+    index.add("greek/Bilbo-Baggins.md", "hi")
+    index.add("Gollum.md", "hi")
+    index.commit("Add alpha.jpg")
+
+    page = @wiki.page("Bilbo-Baggins")
+    assert page
+    @wiki.delete_page(page, commit)
+
+    assert_equal 2, @wiki.repo.commits.size
+    assert_nil @wiki.page("Bilbo-Baggins")
+
+    assert @wiki.page("Gollum")
+  end
+
   teardown do
     FileUtils.rm_r(File.join(File.dirname(__FILE__), *%w[examples test.git]))
   end