From 22dfab253babbd85e58b285749b78403fa597b96 Mon Sep 17 00:00:00 2001
From: Thomas Keller <me@thomaskeller.biz>
Date: Tue, 6 Dec 2011 08:13:06 +0100
Subject: [PATCH] Implement resource deletion.

---
 src/IDF/Form/WikiResourceDelete.php           | 64 +++++++++++++++++++
 src/IDF/Views/Wiki.php                        | 39 +++++++++++
 src/IDF/Wiki/ResourceRevision.php             |  5 +-
 .../templates/idf/wiki/deleteResource.html    | 47 ++++++++++++++
 4 files changed, 151 insertions(+), 4 deletions(-)
 create mode 100644 src/IDF/Form/WikiResourceDelete.php
 create mode 100644 src/IDF/templates/idf/wiki/deleteResource.html

diff --git a/src/IDF/Form/WikiResourceDelete.php b/src/IDF/Form/WikiResourceDelete.php
new file mode 100644
index 0000000..2eef1dd
--- /dev/null
+++ b/src/IDF/Form/WikiResourceDelete.php
@@ -0,0 +1,64 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008-2011 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Delete a documentation page.
+ *
+ * This is a hard delete of the page and the revisions.
+ *
+ */
+class IDF_Form_WikiResourceDelete extends Pluf_Form
+{
+    protected $resource = null;
+
+    public function initFields($extra=array())
+    {
+        $this->resource = $extra['resource'];
+        $this->fields['confirm'] = new Pluf_Form_Field_Boolean(
+                                      array('required' => true,
+                                            'label' => __('Yes, I understand that the resource and all its revisions will be deleted.'),
+                                            'initial' => '',
+                                            ));
+    }
+
+    /**
+     * Check the confirmation.
+     */
+    public function clean_confirm()
+    {
+        if (!$this->cleaned_data['confirm']) {
+            throw new Pluf_Form_Invalid(__('You need to confirm the deletion.'));
+        }
+        return $this->cleaned_data['confirm'];
+    }
+
+
+    function save($commit=true)
+    {
+        if (!$this->isValid()) {
+            throw new Exception(__('Cannot save the model from an invalid form.'));
+        }
+        $this->resource->delete();
+        return true;
+    }
+}
diff --git a/src/IDF/Views/Wiki.php b/src/IDF/Views/Wiki.php
index dc51c12..f7888c3 100644
--- a/src/IDF/Views/Wiki.php
+++ b/src/IDF/Views/Wiki.php
@@ -569,6 +569,45 @@ class IDF_Views_Wiki
                                                $request);
     }
 
+    /**
+     * Delete a Wiki resource.
+     */
+    public $deleteResource_precond = array('IDF_Precondition::accessWiki',
+                                           'IDF_Precondition::projectMemberOrOwner');
+    public function deleteResource($request, $match)
+    {
+        $prj = $request->project;
+        $resource = Pluf_Shortcuts_GetObjectOr404('IDF_Wiki_Resource', $match[2]);
+        $prj->inOr404($resource);
+        $params = array('resource' => $resource);
+        if ($request->method == 'POST') {
+            $form = new IDF_Form_WikiResourceDelete($request->POST, $params);
+            if ($form->isValid()) {
+                $form->save();
+                $request->user->setMessage(__('The documentation resource has been deleted.'));
+                $url = Pluf_HTTP_URL_urlForView('IDF_Views_Wiki::listResources',
+                                                array($prj->shortname));
+                return new Pluf_HTTP_Response_Redirect($url);
+            }
+        } else {
+            $form = new IDF_Form_WikiResourceDelete(null, $params);
+        }
+        $title = sprintf(__('Delete Resource %s'), $resource->title);
+        $revision = $resource->get_current_revision();
+        $false = Pluf_DB_BooleanToDb(false, $resource->getDbConnection());
+        $revs = $resource->get_revisions_list(array('order' => 'creation_dtime DESC',
+                                                    'filter' => 'is_head='.$false));
+        return Pluf_Shortcuts_RenderToResponse('idf/wiki/deleteResource.html',
+                                               array(
+                                                     'page_title' => $title,
+                                                     'resource' => $resource,
+                                                     'form' => $form,
+                                                     'rev' => $revision,
+                                                     'revs' => $revs,
+                                                     ),
+                                               $request);
+    }
+
     /**
      * Get the wiki tags.
      *
diff --git a/src/IDF/Wiki/ResourceRevision.php b/src/IDF/Wiki/ResourceRevision.php
index cdf7bce..0ec8fc0 100644
--- a/src/IDF/Wiki/ResourceRevision.php
+++ b/src/IDF/Wiki/ResourceRevision.php
@@ -123,8 +123,7 @@ class IDF_Wiki_ResourceRevision extends Pluf_Model
 
     function preDelete()
     {
-        // if we kill off a head revision, ensure that we either mark a previous
-        // revision as head or kill off the resource record as well
+        // if we kill off a head revision, ensure that we either mark a previous revision as head
         if ($this->is_head) {
             $sql = new Pluf_SQL('wikiresource=%s and id!=%s', array($this->wikiresource, $this->id));
             $revs = Pluf::factory('IDF_Wiki_ResourceRevision')->getList(array('filter'=>$sql->gen(), 'order'=>'id DESC'));
@@ -132,8 +131,6 @@ class IDF_Wiki_ResourceRevision extends Pluf_Model
                 $previous = $revs[0];
                 $previous->is_head = true;
                 $previous->update();
-            } else {
-                $this->get_wikiresource()->delete();
             }
         }
 
diff --git a/src/IDF/templates/idf/wiki/deleteResource.html b/src/IDF/templates/idf/wiki/deleteResource.html
new file mode 100644
index 0000000..c229190
--- /dev/null
+++ b/src/IDF/templates/idf/wiki/deleteResource.html
@@ -0,0 +1,47 @@
+{extends "idf/wiki/base.html"}
+{block docclass}yui-t3{assign $inResourceView=true}{/block}
+{block body}
+
+<p>{blocktrans}If you delete this documentation resource, it will be removed from the database with all the associated revisions 
+and <strong>you will not be able to recover it</strong>. Any documentation pages that reference this resource,
+will no longer be able to render it, but won't be deleted.{/blocktrans}</p>
+<form method="post" action=".">
+<table class="form" summary="">
+<tr>
+<td>&nbsp;</td>
+<td>
+{$form.f.confirm|unsafe} <strong>{$form.f.confirm.labelTag}</strong><br />
+{if $form.f.confirm.errors}{$form.f.confirm.fieldErrors}{/if}
+<input type="submit" value="{trans 'Delete Resource'}" name="submit" /> | <a href="{url 'IDF_Views_Wiki::viewResource', array($project.shortname, $resource.title)}">{trans 'Cancel'}</a> 
+</td>
+</tr>
+</table>
+</form>
+
+<p class="desc">{$resource.summary}</p>
+
+{assign $preview = $rev.renderRaw()}
+{if $preview == ''}
+  {assign $preview = __('Unable to render preview for this MIME type.')}
+{/if}
+<p class="preview">{$preview|unsafe}</p>
+
+<ul>
+<li>{trans 'File size'}: {$rev.filesize|size}</li>
+<li>{trans 'MIME type'}: {$resource.mime_type}</li>
+<li><a href="{$rev.getRawURL(true)}">{trans 'Download this file'}</a></li>
+</ul>
+{/block}
+
+{block context}
+{assign $submitter = $resource.get_submitter()}
+<p><strong>{trans 'Created:'}</strong> <span class="nobrk">{$resource.creation_dtime|dateago}</span><br /><span class="nobrk">{blocktrans}by {$submitter}{/blocktrans}</span></p>
+{if $rev.creation_dtime != $resource.creation_dtime}<p>{assign $submitter = $rev.get_submitter()}
+<strong>{trans 'Updated:'}</strong> <span class="nobrk">{$rev.creation_dtime|dateago}</span><br /><span class="nobrk">{blocktrans}by {$submitter}{/blocktrans}</span></p>{/if}
+{if $revs.count() > 0}
+<p><strong>{trans 'Old Revisions'}</strong></p>
+<ul>{foreach $revs as $old}
+<li><a href="{url 'IDF_Views_Wiki::viewResource', array($project.shortname, $resource.title), array('rev'=>$old.id)}">{$old.summary}</a></li>
+{/foreach}</ul>
+{/if}
+{/block}