Merge pull request #3803 from annando/conversation-feed

we now provide a feed for the conversation

include/dfrn.php

@@ -289,10 +289,17 @@ class dfrn {
 	 * @brief Generate an atom entry for a given item id
 	 *
 	 * @param int $item_id The item id
+	 * @param boolean $conversation Show the conversation. If false show the single post.
 	 *
 	 * @return string DFRN feed entry
 	 */
-	public static function itemFeed($item_id) {
+	public static function itemFeed($item_id, $conversation = false) {
+		if ($conversation) {
+			$condition = '`item`.`parent`';
+		} else {
+			$condition = '`item`.`id`';
+		}
+
 		$r = q("SELECT `item`.*, `item`.`id` AS `item_id`,
 			`contact`.`name`, `contact`.`network`, `contact`.`photo`, `contact`.`url`,
 			`contact`.`name-date`, `contact`.`uri-date`, `contact`.`avatar-date`,
@@ -302,8 +309,9 @@ class dfrn {
 			STRAIGHT_JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 				AND (NOT `contact`.`blocked` OR `contact`.`pending`)
 			LEFT JOIN `sign` ON `sign`.`iid` = `item`.`id`
-			WHERE `item`.`id` = %d AND `item`.`visible` AND NOT `item`.`moderated` AND `item`.`parent` != 0
+			WHERE %s = %d AND `item`.`visible` AND NOT `item`.`moderated` AND `item`.`parent` != 0
 			AND NOT `item`.`private`",
+			$condition,
 			intval($item_id)
 		);
 
@@ -311,6 +319,7 @@ class dfrn {
 			killme();
 		}
 
+		$items = $r;
 		$item = $r[0];
 
 		$r = q("SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`, `user`.`account-type`
@@ -327,12 +336,31 @@ class dfrn {
 
 		$doc = new DOMDocument('1.0', 'utf-8');
 		$doc->formatOutput = true;
-
-		$alternatelink = $owner['url'];
-
 		$type = 'html';
 
+		if ($conversation) {
+			$root = $doc->createElementNS(NAMESPACE_ATOM1, 'feed');
+			$doc->appendChild($root);
+
+			$root->setAttribute("xmlns:thr", NAMESPACE_THREAD);
+			$root->setAttribute("xmlns:at", NAMESPACE_TOMB);
+			$root->setAttribute("xmlns:media", NAMESPACE_MEDIA);
+			$root->setAttribute("xmlns:dfrn", NAMESPACE_DFRN);
+			$root->setAttribute("xmlns:activity", NAMESPACE_ACTIVITY);
+			$root->setAttribute("xmlns:georss", NAMESPACE_GEORSS);
+			$root->setAttribute("xmlns:poco", NAMESPACE_POCO);
+			$root->setAttribute("xmlns:ostatus", NAMESPACE_OSTATUS);
+			$root->setAttribute("xmlns:statusnet", NAMESPACE_STATUSNET);
+
+			//$root = self::add_header($doc, $owner, "dfrn:owner", "", false);
+
+			foreach ($items as $item) {
+				$entry = self::entry($doc, $type, $item, $owner, true, 0);
+				$root->appendChild($entry);
+			}
+		} else {
 			$root = self::entry($doc, $type, $item, $owner, true, 0, true);
+		}
 
 		$atom = trim($doc->saveXML());
 		return $atom;

mod/display.php

@@ -17,7 +17,14 @@ function display_init(App $a) {
 	if ($a->argc == 3) {
 		if (substr($a->argv[2], -5) == '.atom') {
 			$item_id = substr($a->argv[2], 0, -5);
-			displayShowFeed($item_id);
+			displayShowFeed($item_id, false);
+		}
+	}
+
+	if ($a->argc == 4) {
+		if ($a->argv[3] == 'conversation.atom') {
+			$item_id = $a->argv[2];
+			displayShowFeed($item_id, true);
 		}
 	}
 
@@ -66,7 +73,7 @@ function display_init(App $a) {
 
 			if (strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
 				logger('Directly serving XML for id '.$r["id"], LOGGER_DEBUG);
-				displayShowFeed($r["id"]);
+				displayShowFeed($r["id"], false);
 			}
 
 			if ($r["id"] != $r["parent"]) {
@@ -219,17 +226,18 @@ function display_content(App $a, $update = 0) {
 			$nick = "";
 
 			if (local_user()) {
-				$r = dba::fetch_first("SELECT `id` FROM `item`
+				$r = dba::fetch_first("SELECT `id`, `parent` FROM `item`
 					WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 						AND `guid` = ? AND `uid` = ?", $a->argv[1], local_user());
 				if (dbm::is_result($r)) {
 					$item_id = $r["id"];
+					$item_parent = $r["parent"];
 					$nick = $a->user["nickname"];
 				}
 			}
 
 			if ($nick == "") {
-				$r = dba::fetch_first("SELECT `user`.`nickname`, `item`.`id` FROM `item` STRAIGHT_JOIN `user` ON `user`.`uid` = `item`.`uid`
+				$r = dba::fetch_first("SELECT `user`.`nickname`, `item`.`id`, `item`.`parent` FROM `item` STRAIGHT_JOIN `user` ON `user`.`uid` = `item`.`uid`
 					WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 						AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
 						AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
@@ -237,11 +245,12 @@ function display_content(App $a, $update = 0) {
 						AND `item`.`guid` = ?", $a->argv[1]);
 				if (dbm::is_result($r)) {
 					$item_id = $r["id"];
+					$item_parent = $r["parent"];
 					$nick = $r["nickname"];
 				}
 			}
 			if ($nick == "") {
-				$r = dba::fetch_first("SELECT `item`.`id` FROM `item`
+				$r = dba::fetch_first("SELECT `item`.`id`, `item`.`parent` FROM `item`
 					WHERE `item`.`visible` AND NOT `item`.`deleted` AND NOT `item`.`moderated`
 						AND `item`.`allow_cid` = ''  AND `item`.`allow_gid` = ''
 						AND `item`.`deny_cid`  = '' AND `item`.`deny_gid`  = ''
@@ -249,15 +258,17 @@ function display_content(App $a, $update = 0) {
 						AND `item`.`guid` = ?", $a->argv[1]);
 				if (dbm::is_result($r)) {
 					$item_id = $r["id"];
+					$item_parent = $r["parent"];
 				}
 			}
 		}
 	}
 
 	if ($item_id && !is_numeric($item_id)) {
-		$r = dba::select('item', array('id'), array('uri' => $item_id, 'uid' => $a->profile['uid']), array('limit' => 1));
+		$r = dba::select('item', array('id', 'parent'), array('uri' => $item_id, 'uid' => $a->profile['uid']), array('limit' => 1));
 		if (dbm::is_result($r)) {
 			$item_id = $r["id"];
+			$item_parent = $r["parent"];
 		} else {
 			$item_id = false;
 		}
@@ -273,12 +284,15 @@ function display_content(App $a, $update = 0) {
 	$is_public = dba::exists('item', array('id' => $item_id, 'private' => false));
 	if ($is_public) {
 		$alternate = System::baseUrl().'/display/'.$nick.'/'.$item_id.'.atom';
+		$conversation = System::baseUrl().'/display/'.$nick.'/'.$item_parent.'/conversation.atom';
 	} else {
 		$alternate = '';
+		$conversation = '';
 	}
 
 	$a->page['htmlhead'] .= replace_macros(get_markup_template('display-head.tpl'),
-				array('$alternate' => $alternate));
+				array('$alternate' => $alternate,
+					'$conversation' => $conversation));
 
 	$groups = array();
 
@@ -476,8 +490,8 @@ function display_content(App $a, $update = 0) {
 	return $o;
 }
 
-function displayShowFeed($item_id) {
+function displayShowFeed($item_id, $conversation) {
-	$xml = dfrn::itemFeed($item_id);
+	$xml = dfrn::itemFeed($item_id, $conversation);
 	if ($xml == '') {
 		http_status_exit(500);
 	}

view/templates/display-head.tpl

@@ -1,4 +1,9 @@
-{{if $alternate}}<link href='{{$alternate}}' rel='alternate' type='application/atom+xml'>{{/if}}
+{{if $alternate}}
+<link href='{{$alternate}}' rel='alternate' type='application/atom+xml'>
+{{/if}}
+{{if $conversation}}
+<link href='{{$conversation}}' rel='conversation' type='application/atom+xml'>
+{{/if}}
 <script>
 $(document).ready(function() {
 	$(".comment-edit-wrapper textarea").editor_autocomplete(baseurl+"/acl");