From 9359f9fe4d77de392660c2bf6f1df8becc9fa6bf Mon Sep 17 00:00:00 2001
From: zotlabs <mike@macgirvin.com>
Date: Tue, 1 Aug 2017 22:25:55 -0700
Subject: plugin hook for update_unseen

---
 Zotlabs/Module/Channel.php | 10 +++++++---
 Zotlabs/Module/Network.php | 13 +++++++++----
 Zotlabs/Module/Notify.php  | 16 ++++++++++------
 doc/hook/update_unseen.bb  |  9 +++++++++
 doc/hooklist.bb            |  3 +++
 5 files changed, 38 insertions(+), 13 deletions(-)
 create mode 100644 doc/hook/update_unseen.bb

diff --git a/Zotlabs/Module/Channel.php b/Zotlabs/Module/Channel.php
index a44984c97..c006d65d4 100644
--- a/Zotlabs/Module/Channel.php
+++ b/Zotlabs/Module/Channel.php
@@ -358,9 +358,13 @@ class Channel extends \Zotlabs\Web\Controller {
 		}
 
 		if($is_owner && $update_unseen) {
-			$r = q("UPDATE item SET item_unseen = 0 where item_unseen = 1 and item_wall = 1 AND uid = %d $update_unseen",
-				intval(local_channel())
-			);
+			$x = [ 'channel_id' => local_channel(), 'update' => 'unset' ];
+			call_hooks('update_unseen',$x);
+			if($x['update'] === 'unset' || intval($x['update'])) {
+				$r = q("UPDATE item SET item_unseen = 0 where item_unseen = 1 and item_wall = 1 AND uid = %d $update_unseen",
+					intval(local_channel())
+				);
+			}
 		}
 
 
diff --git a/Zotlabs/Module/Network.php b/Zotlabs/Module/Network.php
index 597ba084b..1954df549 100644
--- a/Zotlabs/Module/Network.php
+++ b/Zotlabs/Module/Network.php
@@ -545,10 +545,15 @@ class Network extends \Zotlabs\Web\Controller {
 			}
 		}
 	
-		if(($update_unseen) && (! $firehose))
-			$r = q("UPDATE item SET item_unseen = 0 WHERE item_unseen = 1 AND uid = %d $update_unseen ",
-				intval(local_channel())
-			);
+		if(($update_unseen) && (! $firehose)) {
+			$x = [ 'channel_id' => local_channel(), 'update' => 'unset' ];
+			call_hooks('update_unseen',$x);
+			if($x['update'] === 'unset' || intval($x['update'])) {
+				$r = q("UPDATE item SET item_unseen = 0 WHERE item_unseen = 1 AND uid = %d $update_unseen ",
+					intval(local_channel())
+				);
+			}
+		}
 	
 		$mode = (($nouveau) ? 'network-new' : 'network');
 	
diff --git a/Zotlabs/Module/Notify.php b/Zotlabs/Module/Notify.php
index f592f6f37..3d6e1c2e7 100644
--- a/Zotlabs/Module/Notify.php
+++ b/Zotlabs/Module/Notify.php
@@ -15,12 +15,16 @@ class Notify extends \Zotlabs\Web\Controller {
 				intval(local_channel())
 			);
 			if($r) {
-				q("update notify set seen = 1 where (( parent != '' and parent = '%s' and otype = '%s' ) or link = '%s' ) and uid = %d",
-					dbesc($r[0]['parent']),
-					dbesc($r[0]['otype']),
-					dbesc($r[0]['link']),
-					intval(local_channel())
-				);
+				$x = [ 'channel_id' => local_channel(), 'update' => 'unset' ];
+				call_hooks('update_unseen',$x);
+				if($x['update'] === 'unset' || intval($x['update'])) {
+					q("update notify set seen = 1 where (( parent != '' and parent = '%s' and otype = '%s' ) or link = '%s' ) and uid = %d",
+						dbesc($r[0]['parent']),
+						dbesc($r[0]['otype']),
+						dbesc($r[0]['link']),
+						intval(local_channel())
+					);
+				}
 				goaway($r[0]['link']);
 			}
 			goaway(z_root());
diff --git a/doc/hook/update_unseen.bb b/doc/hook/update_unseen.bb
new file mode 100644
index 000000000..8fb02c239
--- /dev/null
+++ b/doc/hook/update_unseen.bb
@@ -0,0 +1,9 @@
+[h3]update_unseen[/h3]
+
+Called prior to automatically marking items 'seen'; allowing a plugin the choice to not perform this action.
+
+hook data
+
+[ 'channel_id' => local_channel(), 'update' => 'unset' ];
+
+If 'update' is set to 0 or false on return, the update operation is not performed.  
\ No newline at end of file
diff --git a/doc/hooklist.bb b/doc/hooklist.bb
index da4d9596b..9a17fdb91 100644
--- a/doc/hooklist.bb
+++ b/doc/hooklist.bb
@@ -572,6 +572,9 @@ Hooks allow plugins/addons to "hook into" the code at many points and alter the
 [zrl=[baseurl]/help/hook/tagged]tagged[/zrl]
 	Called when a delivery is processed which results in you being tagged
 
+[zrl=[baseurl]/help/hook/update_unseen]update_unseen[/zrl]
+	Called prior to automatically marking items seen which were loaded in the browser
+
 [zrl=[baseurl]/help/hook/validate_channelname]validate_channelname[/zrl]
 	Used to validate the names used by a channel
 
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