Page deletion implemented. Hide the delete button and disallow for Home page.

3 files changed, 99 insertions, 8 deletions

diff --git a/Zotlabs/Module/Wiki.php b/Zotlabs/Module/Wiki.php
index ef42c85cf..e335e8917 100644
--- a/Zotlabs/Module/Wiki.php
+++ b/Zotlabs/Module/Wiki.php
@@ -80,7 +80,8 @@ class Wiki extends \Zotlabs\Web\Controller {
 				break;
 			case 3:
 				// /wiki/channel/wiki -> No page was specified, so redirect to Home.md
-				goaway('/'.argv(0).'/'.argv(1).'/'.argv(2).'/Home');
+				$wikiUrlName = urlencode(argv(2));
+				goaway('/'.argv(0).'/'.argv(1).'/'.$wikiUrlName.'/Home');
 			case 4:
 				// GET /wiki/channel/wiki/page
 				// Fetch the wiki info and determine observer permissions
@@ -106,7 +107,7 @@ class Wiki extends \Zotlabs\Web\Controller {
 				$p = wiki_get_page_content(array('resource_id' => $resource_id, 'pageUrlName' => $pageUrlName));
 				if(!$p['success']) {
 					notice('Error retrieving page content' . EOL);
-					goaway('/'.argv(0).'/'.argv(1).'/'.argv(2));
+					goaway('/'.argv(0).'/'.argv(1).'/'.$wikiUrlName);
 				}
 				$content = ($p['content'] !== '' ? $p['content'] : '"# New page\n"');
 				$hide_editor = false;
@@ -116,7 +117,7 @@ class Wiki extends \Zotlabs\Web\Controller {
 				$pageHistory = wiki_page_history(array('resource_id' => $resource_id, 'pageUrlName' => $pageUrlName));
 				break;
 			default:	// Strip the extraneous URL components
-				goaway('/'.argv(0).'/'.argv(1).'/'.argv(2).'/'.argv(3));
+				goaway('/'.argv(0).'/'.argv(1).'/'.$wikiUrlName.'/'.$pageUrlName);
 		}
 		// Render the Markdown-formatted page content in HTML
 		require_once('library/markdown.php');	
@@ -287,7 +288,6 @@ class Wiki extends \Zotlabs\Web\Controller {
 			$nick = argv(1);
 			$resource_id = $_POST['resource_id']; 
 			$pageUrlName = $_POST['name'];
-			logger('pageURLname: ' . $pageUrlName);
 			$pageHtmlName = escape_tags($_POST['name']);
 			$content = escape_tags($_POST['content']); //Get new content
 			// Determine if observer has permission to save content
@@ -354,6 +354,53 @@ class Wiki extends \Zotlabs\Web\Controller {
 			json_return_and_die(array('historyHTML' => $historyHTML, 'message' => '', 'success' => true));
 		}
 
+		// Delete a page
+		if ((argc() === 4) && (argv(2) === 'delete') && (argv(3) === 'page')) {
+			$nick = argv(1);
+			$resource_id = $_POST['resource_id']; 
+			$pageUrlName = $_POST['name'];
+			if ($pageUrlName === 'Home') {
+				json_return_and_die(array('message' => 'Cannot delete Home','success' => false));
+			}
+			// Determine if observer has permission to delete pages
+			if (local_channel()) {
+				$channel = \App::get_channel();
+			} else {
+				$channel = get_channel_by_nick($nick);
+				$observer_hash = get_observer_hash();
+				// Figure out who the page owner is.
+				$perms = get_all_perms(intval($channel['channel_id']), $observer_hash);
+				// TODO: Create a new permission setting for wiki analogous to webpages. Until
+				// then, use webpage permissions
+				if (!$perms['write_pages']) {
+					logger('Wiki editing permission denied.' . EOL);
+					json_return_and_die(array('success' => false));
+				}
+				$perms = wiki_get_permissions($resource_id, intval($channel['channel_id']), $observer_hash);
+				if(!$perms['write']) {
+					logger('Wiki write permission denied. Read only.' . EOL);
+					json_return_and_die(array('success' => false));					
+				}
+			}
+			$deleted = wiki_delete_page(array('resource_id' => $resource_id, 'pageUrlName' => $pageUrlName));
+			if($deleted['success']) {
+				$ob = \App::get_observer();
+				$commit = wiki_git_commit(array(
+						'commit_msg' => 'Deleted ' . $pageHtmlName, 
+						'resource_id' => $resource_id, 
+						'observer' => $ob,
+						'files' => null
+						));
+				if($commit['success']) {
+					json_return_and_die(array('message' => 'Wiki git repo commit made', 'success' => true));
+				} else {
+					json_return_and_die(array('message' => 'Error making git commit','success' => false));					
+				}
+			} else {
+				json_return_and_die(array('message' => 'Error deleting page', 'success' => false));					
+			}
+		}
+		
 		//notice('You must be authenticated.');
 		json_return_and_die(array('message' => 'You must be authenticated.', 'success' => false));
 		
diff --git a/include/wiki.php b/include/wiki.php
index ccf47ef9a..1f90fae1e 100644
--- a/include/wiki.php
+++ b/include/wiki.php
@@ -289,6 +289,24 @@ function wiki_save_page($arr) {
 	}	
 }
 
+function wiki_delete_page($arr) {
+	$pageUrlName = ((array_key_exists('pageUrlName',$arr)) ? $arr['pageUrlName'] : '');
+	$resource_id = ((array_key_exists('resource_id',$arr)) ? $arr['resource_id'] : '');
+	$w = wiki_get_wiki($resource_id);
+	if (!$w['path']) {
+		return array('message' => 'Error reading wiki', 'success' => false);
+	}
+	$page_path = $w['path'].'/'.$pageUrlName.'.md';
+	if (is_writable($page_path) === true) {
+		if(!unlink($page_path)) {
+			return array('message' => 'Error deleting page file', 'success' => false);
+		}
+		return array('message' => '', 'success' => true);
+	} else {
+		return array('message' => 'Page file not writable', 'success' => false);
+	}	
+}
+
 function wiki_git_commit($arr) {
 	$files = ((array_key_exists('files', $arr)) ? $arr['files'] : null);
 	$commit_msg = ((array_key_exists('commit_msg', $arr)) ? $arr['commit_msg'] : 'Repo updated');
diff --git a/view/tpl/wiki.tpl b/view/tpl/wiki.tpl
index 384dc796d..6cdfabdb9 100644
--- a/view/tpl/wiki.tpl
+++ b/view/tpl/wiki.tpl
@@ -5,10 +5,10 @@
     height: 500px;
   }
   .fade.in {
-    -webkit-transition: opacity 2s 1s ease;
-    -moz-transition: opacity 2s 1s ease;
-    -o-transition: opacity 2s 1s ease;
-    transition: opacity 2s 1s ease;
+    -webkit-transition: opacity 0.5s 0.5s ease;
+    -moz-transition: opacity 0.5s 0.5s ease;
+    -o-transition: opacity 0.5s 0.5s ease;
+    transition: opacity 0.5s 0.5s ease;
   }
 </style>
 <div class="generic-content-wrapper">
@@ -106,6 +106,9 @@
 <script>
   window.wiki_resource_id = '{{$resource_id}}';
   window.wiki_page_name = '{{$page}}';
+  if (window.wiki_page_name === 'Home') {
+    $('#delete-page').hide();
+  }
   $(document).ready(function () {
     wiki_refresh_page_list();
     // Show Edit tab first. Otherwise the Ace editor does not load.
@@ -206,4 +209,27 @@ function wiki_delete_wiki(wikiHtmlName, resource_id) {
       }, 'json');
     ev.preventDefault();
   });
+  
+    $('#delete-page').click(function (ev) {
+    if (window.wiki_resource_id === '' || window.wiki_page_name === '' || window.wiki_page_name === 'Home') {
+      window.console.log('You must have a wiki page open in order to delete pages.');
+      ev.preventDefault();
+      return false;
+    }
+    $.post("wiki/{{$channel}}/delete/page", {name: window.wiki_page_name, resource_id: window.wiki_resource_id}, 
+      function (data) {
+        if (data.success) {
+          window.console.log('Page deleted successfully.');
+          var url = window.location.href;
+          if (url.substr(-1) == '/') url = url.substr(0, url.length - 2);
+          url = url.split('/');
+          url.pop();
+          window.location = url.join('/');
+        } else {
+          alert('Error deleting page.'); // TODO: Replace alerts with auto-timeout popups 
+          window.console.log('Error deleting page.');
+        }
+      }, 'json');
+    ev.preventDefault();
+  });
 </script>