From 6854cb3f4d8219cf1829e32122eb2502a916eae9 Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Sat, 1 Feb 2020 09:05:48 +0100
Subject: initial checkin

---
 setup/upgrade/0.9.9/convert_categories.php | 43 ++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 setup/upgrade/0.9.9/convert_categories.php

(limited to 'setup/upgrade/0.9.9/convert_categories.php')

diff --git a/setup/upgrade/0.9.9/convert_categories.php b/setup/upgrade/0.9.9/convert_categories.php
new file mode 100644
index 0000000..99789ad
--- /dev/null
+++ b/setup/upgrade/0.9.9/convert_categories.php
@@ -0,0 +1,43 @@
+<?php
+   /**********************************************************\
+   | This script converts the categories table to the new      |
+   | format.                                                   |
+   \***********************************************************/
+   
+function rebuild_tree($parent, $left, $pr) {
+    global $db;
+   // the right value of this node is the left value + 1
+   $right = $left+1;
+
+   // get all children of this node
+   $result = $db->query('SELECT category_id FROM {list_category} WHERE parent_id = ? AND project_id = ?', array($parent, $pr));
+
+   while ($row = $db->fetchRow($result)) {
+       // recursive execution of this function for each
+       // child of this node
+       // $right is the current right value, which is
+       // incremented by the rebuild_tree function
+       $right = rebuild_tree($row['category_id'], $right, $pr);
+   }
+
+   // we've got the left value, and now that we've processed
+   // the children of this node we also know the right value
+   $db->query('UPDATE {list_category} SET lft= ?, rgt= ? WHERE category_id = ?', array($left, $right, $parent));
+   $sql = $db->query('SELECT * FROM {list_category} WHERE category_id = ? OR project_id=? AND parent_id=-1', array($parent, $pr));
+   if (!$db->countRows($sql)) {
+       $db->query('INSERT INTO {list_category} (project_id, lft, rgt, category_name, parent_id) VALUES(?,?,?,?,-1)',
+                  array($pr,$left,$right,'root'));
+   }
+   // return the right value of this node + 1
+   return $right+1;
+} 
+
+$projects = $db->query('SELECT project_id FROM {projects}');
+
+// Global project
+rebuild_tree(0, 1, 0);
+while ($pr = $db->fetchRow($projects)) {
+    rebuild_tree(0, 1, $pr['project_id']);
+}
+
+?>
-- 
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