From 02cf7274d28d093094067114d208537cf135266b Mon Sep 17 00:00:00 2001
From: Andrew Manning <tamanning@zoho.com>
Date: Sat, 22 Oct 2016 08:52:26 -0400
Subject: Add wiki download button to export the selected wiki repo to a zip
 file

---
 Zotlabs/Module/Wiki.php | 30 ++++++++++++++++++++++++++++++
 view/tpl/wiki.tpl       |  4 ++++
 view/tpl/wikilist.tpl   |  1 +
 3 files changed, 35 insertions(+)

diff --git a/Zotlabs/Module/Wiki.php b/Zotlabs/Module/Wiki.php
index bb4e9179c..8cf106b33 100644
--- a/Zotlabs/Module/Wiki.php
+++ b/Zotlabs/Module/Wiki.php
@@ -90,6 +90,35 @@ class Wiki extends \Zotlabs\Web\Controller {
 			// Not the channel owner 
 			$channel_acl = $x = array();
 		}
+		
+		// Download a wiki
+		if ((argc() > 3) && (argv(2) === 'download') && (argv(3) === 'wiki')) {
+				$resource_id = argv(4); 
+				$w = wiki_get_wiki($resource_id);
+				if (!$w['path']) {
+						notice('Error retrieving wiki' . EOL);
+				}
+				$zip_folder_name = random_string(10);
+				$zip_folderpath = '/tmp/' . $zip_folder_name;
+				if (!mkdir($zip_folderpath, 0770, false)) {	
+						logger('Error creating zip file export folder: ' . $zip_folderpath, LOGGER_NORMAL);
+						notice('Error creating zip file export folder' . EOL);
+				}
+				$zip_filename = $w['urlName'];
+				$zip_filepath = '/tmp/' . $zip_folder_name . '/' . $zip_filename;
+				// Generate the zip file
+				\Zotlabs\Lib\ExtendedZip::zipTree($w['path'], $zip_filepath, \ZipArchive::CREATE);
+				// Output the file for download
+				header('Content-disposition: attachment; filename="' . $zip_filename . '.zip"');
+				header("Content-Type: application/zip");
+				$success = readfile($zip_filepath);
+				if ($success) {
+						rrmdir($zip_folderpath); 	// delete temporary files
+				} else {
+						rrmdir($zip_folderpath); 	// delete temporary files
+						logger('Error downloading wiki: ' . $resource_id);
+				}
+		}
 
 		switch (argc()) {
 			case 2:
@@ -297,6 +326,7 @@ class Wiki extends \Zotlabs\Web\Controller {
 			}
 		}
 
+
 		// Create a page
 		if ((argc() === 4) && (argv(2) === 'create') && (argv(3) === 'page')) {
 			$nick = argv(1);
diff --git a/view/tpl/wiki.tpl b/view/tpl/wiki.tpl
index c05b33a61..8fdf56e77 100644
--- a/view/tpl/wiki.tpl
+++ b/view/tpl/wiki.tpl
@@ -239,6 +239,10 @@ function wiki_delete_wiki(wikiHtmlName, resource_id) {
     }, 'json');
 }
 
+  
+function wiki_download_wiki(resource_id) {
+		window.location = "wiki/{{$channel}}/download/wiki/" + resource_id;
+}
 
   $('#new-page-submit').click(function (ev) {
     if (window.wiki_resource_id === '') {
diff --git a/view/tpl/wikilist.tpl b/view/tpl/wikilist.tpl
index be353ca5e..6b37be4c5 100644
--- a/view/tpl/wikilist.tpl
+++ b/view/tpl/wikilist.tpl
@@ -8,6 +8,7 @@
             </a>  
             <ul class="dropdown-menu  pull-right">  
               <li><a href="/wiki/{{$channel}}/{{$wiki.urlName}}/Home" title="View  {{$wiki.title}}">View</a></li>
+							<li><a href="#" onclick="wiki_download_wiki('{{$wiki.resource_id}}'); return false;" title="Download  {{$wiki.title}}">Download</a></li>
               {{if $showControls}}
               <li class="divider"></li>  
               <li><a href="#" onclick="wiki_delete_wiki('{{$wiki.title}}','{{$wiki.resource_id}}'); return false;" title="Delete {{$wiki.title}}">Delete wiki</a></li>                                
-- 
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