1 files changed, 287 insertions, 0 deletions
diff --git a/mod/blog/lib/blog.php b/mod/blog/lib/blog.php
new file mode 100644
index 000000000..4db3effde
--- /dev/null
+++ b/mod/blog/lib/blog.php
@@ -0,0 +1,287 @@
+<?php
+/**
+ * Blog helper functions
+ *
+ * @package Blog
+ */
+
+
+/**
+ * Returns HTML for a blog post.
+ *
+ * @param int $guid of a blog entity.
+ * @return string html
+ */
+function blog_get_page_content_read($owner_guid = NULL, $guid = NULL) {
+	global $CONFIG;
+
+	$return = array();
+
+	if ($guid) {
+		$blog = get_entity($guid);
+
+		// no header or tabs for viewing an individual blog
+		$return['filter'] = '';
+		$return['header'] = '';
+
+		if (!elgg_instanceof($blog, 'object', 'blog') || ($blog->status != 'published' && !$blog->canEdit())) {
+			$return['content'] = elgg_echo('blog:error:post_not_found');
+		} else {
+			elgg_push_breadcrumb($blog->title, $blog->getURL());
+			$return['content'] = elgg_view_entity($blog, TRUE);
+			//check to see if comment are on
+			if ($blog->comments_on != 'Off') {
+				$return['content'] .= elgg_view_comments($blog);
+			}
+		}
+	} else {
+
+		$return['filter_context'] = $owner_guid ? 'mine' : 'everyone';
+
+		$options = array(
+			'type' => 'object',
+			'subtype' => 'blog',
+			'full_view' => FALSE,
+			//'order_by_metadata' => array('name'=>'publish_date', 'direction'=>'DESC', 'as'=>'int')
+		);
+
+		$loggedin_userid = get_loggedin_userid();
+		if ($owner_guid) {
+			$options['owner_guid'] = $owner_guid;
+/*
+			if ($owner_guid != $loggedin_userid) {
+				// do not show content header when viewing other users' posts
+				$content = elgg_view('page_elements/content_header_member', array('type' => 'blog'));
+			}
+ * 
+ */
+		}
+
+		// show all posts for admin or users looking at their own blogs
+		// show only published posts for other users.
+		if (!(isadminloggedin() || (isloggedin() && $owner_guid == $loggedin_userid))) {
+			$options['metadata_name_value_pairs'] = array(
+				array('name' => 'status', 'value' => 'published'),
+				//array('name' => 'publish_date', 'operand' => '<', 'value' => time())
+			);
+		}
+
+		$list = elgg_list_entities_from_metadata($options);
+		if (!$list) {
+			$return['content'] = elgg_echo('blog:none');
+		} else {
+			$return['content'] = $list;
+		}
+	}
+
+	return $return;
+}
+
+/**
+ * Returns HTML to edit a blog post.
+ *
+ * @param int $guid
+ * @param int annotation id optional revision to edit
+ * @return string html
+ */
+function blog_get_page_content_edit($guid, $revision = NULL) {
+	$vars = array();
+	if ($guid) {
+		$blog = get_entity((int)$guid);
+
+		if (elgg_instanceof($blog, 'object', 'blog') && $blog->canEdit()) {
+			$vars['entity'] = $blog;
+
+			if ($revision) {
+				$revision = get_annotation((int)$revision);
+				$vars['revision'] = $revision;
+
+				if (!$revision || !($revision->entity_guid == $guid)) {
+					$content = elgg_echo('blog:error:revision_not_found');
+				}
+			}
+
+			elgg_push_breadcrumb($blog->title, $blog->getURL());
+			elgg_push_breadcrumb(elgg_echo('edit'));
+
+			$content = elgg_view('blog/forms/edit', $vars);
+			$sidebar = elgg_view('blog/sidebar_revisions', array('entity' => $blog));
+			//$sidebar .= elgg_view('blog/sidebar_related');
+		} else {
+			$content = elgg_echo('blog:error:post_not_found');
+		}
+	} else {
+		elgg_push_breadcrumb(elgg_echo('blog:new'));
+		$content = elgg_view('blog/forms/edit', $vars);
+		//$sidebar = elgg_view('blog/sidebar_related');
+	}
+
+	return array(
+		'content' => $content,
+		'sidebar' => $sidebar,
+		'header' => '',
+		'filter' => '',
+	);
+}
+
+/**
+ * Show blogs with publish dates between $lower and $upper
+ *
+ * @param unknown_type $owner_guid
+ * @param unknown_type $lower
+ * @param unknown_type $upper
+ */
+function blog_get_page_content_archive($owner_guid, $lower=0, $upper=0) {
+	global $CONFIG;
+
+	$now = time();
+
+	elgg_push_breadcrumb(elgg_echo('blog:archives'));
+	$content = elgg_view('page_elements/content_header_member', array('type' => 'blog'));
+
+	if ($lower) {
+		$lower = (int)$lower;
+	}
+
+	if ($upper) {
+		$upper = (int)$upper;
+	}
+
+	$options = array(
+		'type' => 'object',
+		'subtype' => 'blog',
+		'full_view' => FALSE,
+		'order_by_metadata' => array('name'=>'publish_date', 'direction'=>'DESC', 'as'=>'int'),
+	);
+
+	if ($owner_guid) {
+		$options['owner_guid'] = $owner_guid;
+	}
+
+	// admin / owners can see any posts
+	// everyone else can only see published posts
+	if (!(isadminloggedin() || (isloggedin() && $owner_guid == get_loggedin_userid()))) {
+		if ($upper > $now) {
+			$upper = $now;
+		}
+
+		$options['metadata_name_value_pairs'] = array(
+			array('name' => 'status', 'value' => 'published')
+		);
+	}
+
+	if ($lower) {
+		$options['metadata_name_value_pairs'][] = array(
+			'name' => 'publish_date',
+			'operand' => '>',
+			'value' => $lower
+		);
+	}
+
+	if ($upper) {
+		$options['metadata_name_value_pairs'][] = array(
+			'name' => 'publish_date',
+			'operand' => '<',
+			'value' => $upper
+		);
+	}
+
+	$list = elgg_list_entities_from_metadata($options);
+	if (!$list) {
+		$content .= elgg_echo('blog:none');
+	} else {
+		$content .= $list;
+	}
+
+	return array(
+		'content' => $content,
+		'filter' => '',
+		'header' => '',
+	);
+}
+
+/**
+ * Returns a view of the user's friend's posts.
+ *
+ * @param int $user_guid
+ * @return string
+ */
+function blog_get_page_content_friends($user_guid) {
+	global $CONFIG;
+
+	elgg_push_breadcrumb(elgg_echo('friends'));
+
+	$return = array();
+
+	$return['filter_context'] = 'friends';
+
+	if (!$friends = get_user_friends($user_guid, ELGG_ENTITIES_ANY_VALUE, 0)) {
+		$return['content'] .= elgg_echo('friends:none:you');
+		return $return;
+	} else {
+		$options = array(
+			'type' => 'object',
+			'subtype' => 'blog',
+			'full_view' => FALSE,
+			'order_by_metadata' => array('name'=>'publish_date', 'direction'=>'DESC', 'as'=>'int'),
+		);
+
+		foreach ($friends as $friend) {
+			$options['container_guids'][] = $friend->getGUID();
+		}
+
+		// admin / owners can see any posts
+		// everyone else can only see published posts
+		if (!(isadminloggedin() || (isloggedin() && $owner_guid == get_loggedin_userid()))) {
+			if ($upper > $now) {
+				$upper = $now;
+			}
+
+			$options['metadata_name_value_pairs'][] = array(
+				array('name' => 'status', 'value' => 'published')
+			);
+		}
+
+		$list = elgg_list_entities_from_metadata($options);
+		if (!$list) {
+			$return['content'] = elgg_echo('blog:none');
+		} else {
+			$return['content'] = $list;
+		}
+	}
+
+	return $return;
+}
+
+/**
+ * Returns a list of years and months for all blogs optionally for a user.
+ * Very similar to get_entity_dates() except uses a metadata field.
+ *
+ * @param mixed $user_guid
+ */
+function blog_get_blog_months($user_guid = NULL, $container_guid = NULL) {
+	global $CONFIG;
+
+	$subtype = get_subtype_id('object', 'blog');
+
+	$q = "SELECT DISTINCT EXTRACT(YEAR_MONTH FROM FROM_UNIXTIME(mdv.string)) AS yearmonth
+		FROM {$CONFIG->dbprefix}entities e, {$CONFIG->dbprefix}metadata, {$CONFIG->dbprefix}metastrings mdn, {$CONFIG->dbprefix}metastrings mdv
+		WHERE e.guid = {$CONFIG->dbprefix}metadata.entity_guid
+		AND {$CONFIG->dbprefix}metadata.name_id = mdn.id
+		AND {$CONFIG->dbprefix}metadata.value_id = mdv.id
+		AND mdn.string = 'publish_date'";
+
+	if ($user_guid) {
+		$user_guid = (int)$user_guid;
+		$q .= " AND e.owner_guid = $user_guid";
+	}
+
+	if ($container_guid) {
+		$container_guid = (int)$container_guid;
+		$q .= " AND e.container_guid = $container_guid";
+	}
+
+	$q .= ' AND ' . get_access_sql_suffix('e');
+
+	return get_data($q);
+}