From 4c162153d6904e54bf51e2fdb949523f73c4c3bf Mon Sep 17 00:00:00 2001
From: nathangray <nathangray.bsc+github@gmail.com>
Date: Tue, 6 Nov 2018 15:15:36 -0700
Subject: [PATCH] * Addressbook - add option to import that deletes contacts
 from addressbook that are not in the import list

---
 ...ss.addressbook_import_contacts_csv.inc.php | 54 +++++++++++++++++++
 .../importexport_wizard_chooseowner.xet       |  3 ++
 2 files changed, 57 insertions(+)

diff --git a/addressbook/inc/class.addressbook_import_contacts_csv.inc.php b/addressbook/inc/class.addressbook_import_contacts_csv.inc.php
index 047991f26c..88d4d595de 100644
--- a/addressbook/inc/class.addressbook_import_contacts_csv.inc.php
+++ b/addressbook/inc/class.addressbook_import_contacts_csv.inc.php
@@ -42,6 +42,29 @@ class addressbook_import_contacts_csv extends importexport_basic_import_csv  {
 	 */
 	private $type_warned = false;
 
+	/**
+	 * To empty addressbook before importing, we actually keep track of
+	 * what's imported and delete the others to keep history.
+	 *
+	 * @var type
+	 */
+	private $ids = array();
+
+	/**
+	 * imports entries according to given definition object.
+	 * @param resource $_stream
+	 * @param string $_charset
+	 * @param definition $_definition
+	 */
+	public function import( $_stream, importexport_definition $_definition ) {
+		parent::import($_stream, $_definition);
+
+		if($_definition->plugin_options['empty_addressbook'])
+		{
+			$this->empty_addressbook($this->user, $this->ids);
+		}
+	}
+
 	/**
 	 * imports entries according to given definition object.
 	 * @param resource $_stream
@@ -302,6 +325,8 @@ class addressbook_import_contacts_csv extends importexport_basic_import_csv  {
 					unset($_data['owner']);
 				}
 
+				$this->ids[] = $_data['id'];
+
 				// Merge to deal with fields not in import record
 				$_data = array_merge($old, $_data);
 				$changed = $this->tracking->changed_fields($_data, $old);
@@ -334,6 +359,7 @@ class addressbook_import_contacts_csv extends importexport_basic_import_csv  {
 					if(!$result) {
 						$this->errors[$record_num] = $this->bocontacts->error;
 					} else {
+						$this->ids[] = $result;
 						$this->results[$_action]++;
 						// This does nothing (yet?) but update the identifier
 						$record->save($result);
@@ -346,6 +372,34 @@ class addressbook_import_contacts_csv extends importexport_basic_import_csv  {
 		}
 	}
 
+
+	/**
+	 * Delete all contacts from the addressbook, except the given list
+	 *
+	 * @param int $addressbook Addressbook to clear
+	 * @param array $ids Contacts to keep
+	 */
+	protected function empty_addressbook($addressbook, $ids)
+	{
+		// Get all IDs in addressbook
+		$contacts = $this->bocontacts->search(array('owner' => $addressbook), true);
+		$contacts = array_column($contacts, 'id');
+
+		$delete = array_diff($contacts, $ids);
+
+		foreach($delete as $id)
+		{
+			if($this->dry_run || $this->bocontacts->delete($id))
+			{
+				$this->results['deleted']++;
+			}
+			else
+			{
+				$this->warnings[] = lang('Unable to delete') . ': ' . Api\Link::title('addressbook', $id);
+			}
+		}
+	}
+
 	/**
 	 * returns translated name of plugin
 	 *
diff --git a/addressbook/templates/default/importexport_wizard_chooseowner.xet b/addressbook/templates/default/importexport_wizard_chooseowner.xet
index 9c4d0c6e5a..ddedc44079 100644
--- a/addressbook/templates/default/importexport_wizard_chooseowner.xet
+++ b/addressbook/templates/default/importexport_wizard_chooseowner.xet
@@ -27,6 +27,9 @@
 						<menupopup type="select-bool" label="Change addressbook when updating" id="change_owner"/>
 					</menulist>
 				</row>
+				<row>
+					<checkbox label="Empty addressbook before importing" id="empty_addressbook"/>
+				</row>
 			</rows>
 		</grid>
 	</template>