From 94bf6c6fadb294697395c74a5036aa2033cc42ac Mon Sep 17 00:00:00 2001
From: Alexey Shpakovsky <alexey@shpakovsky.ru>
Date: Sat, 29 May 2021 16:49:45 +0200
Subject: [PATCH] add a shortcut - avoid costly (1sec) discover process if
 address book uri is known

---
 abook_class.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/abook_class.php b/abook_class.php
index 13a3ea1..9308011 100755
--- a/abook_class.php
+++ b/abook_class.php
@@ -62,6 +62,13 @@ class abook_carddav extends addressbook_backend {
     function open() {
       // backend open function
       $this->account = new Account(DISCOVERY_URI, USERNAME, PASSWORD);
+	// Use stored addressbook uri if it exists
+        if(defined('abook_uri')){
+                $this->abook = new AddressbookCollection(abook_uri, $this->account);
+                // TODO: check that it's valid
+              return true;
+        }
+
 	// Discover the addressbooks for that account
 	try {
 	    $discover = new Discovery();
@@ -73,6 +80,8 @@ class abook_carddav extends addressbook_backend {
 	    return $this->set_error("Cannot proceed because no addressbooks were found - exiting");
 	}
 	$this->abook = $abooks[0];
+	// HINT: use this line to get your discovered addressbook URI
+	// echo "discovered: " . $this->abook->getUri();
       return true;
     }