Adds capability to pin comments before others.

Implements FS#10863

Signed-off-by: Mark Weiman <[email protected]>
---
 schema/aur-schema.sql         |  1 +
 upgrading/4.2.0.txt           |  6 +++
 web/html/css/aurweb.css       |  6 +--
 web/html/images/pin.min.svg   |  1 +
 web/html/images/pin.svg       |  3 ++
 web/html/images/unpin.min.svg |  1 +
 web/html/images/unpin.svg     |  4 ++
 web/html/index.php            |  2 +
 web/html/pkgbase.php          |  4 ++
 web/lib/credentials.inc.php   |  2 +
 web/lib/pkgbasefuncs.inc.php  | 93 ++++++++++++++++++++++++++++++++++++++++---
 web/lib/pkgfuncs.inc.php      | 51 +++++++++++++++++++++++-
 web/template/pkg_comments.php | 54 ++++++++++++++++++++-----
 13 files changed, 207 insertions(+), 21 deletions(-)
 create mode 100755 web/html/images/pin.min.svg
 create mode 100755 web/html/images/pin.svg
 create mode 100755 web/html/images/unpin.min.svg
 create mode 100755 web/html/images/unpin.svg

diff --git a/schema/aur-schema.sql b/schema/aur-schema.sql
index 315a75c..5561278 100644
--- a/schema/aur-schema.sql
+++ b/schema/aur-schema.sql
@@ -261,6 +261,7 @@ CREATE TABLE PackageComments (
        EditedTS BIGINT UNSIGNED NULL DEFAULT NULL,
        EditedUsersID INTEGER UNSIGNED NULL DEFAULT NULL,
        DelUsersID INTEGER UNSIGNED NULL DEFAULT NULL,
+       PinnedTS BIGINT UNSIGNED NOT NULL DEFAULT 0,
        PRIMARY KEY (ID),
        INDEX (UsersID),
        INDEX (PackageBaseID),
diff --git a/upgrading/4.2.0.txt b/upgrading/4.2.0.txt
index 1f92ec5..2b3f983 100644
--- a/upgrading/4.2.0.txt
+++ b/upgrading/4.2.0.txt
@@ -15,3 +15,9 @@ CREATE UNIQUE INDEX ProviderNameProvides ON OfficialProviders 
(Name, Provides);
 ----
 ALTER TABLE Users MODIFY Email VARCHAR(254) NOT NULL;
 ----
+
+3. Add new column in PackageComments for pinning system.
+
+----
+ALTER TABLE PackageComments ADD PinnedTS bigint(20) DEFAULT 0;
+----
diff --git a/web/html/css/aurweb.css b/web/html/css/aurweb.css
index 11af747..82b83d9 100644
--- a/web/html/css/aurweb.css
+++ b/web/html/css/aurweb.css
@@ -101,7 +101,7 @@
        color: #999;
 }
 
-.delete-comment-form, .edit-comment {
+.delete-comment-form, .pin-comment-form, .edit-comment {
        float: right;
        margin-left: 8px;
 }
@@ -112,13 +112,13 @@
        top: 1px;
 }
 
-.delete-comment, .edit-comment {
+.delete-comment, .edit-comment, .pin-comment {
        -webkit-filter: grayscale(100%);
        filter: grayscale(100%);
        opacity: 0.6;
 }
 
-.delete-comment:hover, .edit-comment:hover {
+.delete-comment:hover, .edit-comment:hover, .pin-comment:hover {
        -webkit-filter: none;
        filter: none;
        opacity: 1;
diff --git a/web/html/images/pin.min.svg b/web/html/images/pin.min.svg
new file mode 100755
index 0000000..ac08903
--- /dev/null
+++ b/web/html/images/pin.min.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"; width="8" height="8" viewBox="0 0 8 
8"><path style="fill:#3366aa;fill-opacity:1" d="M1.34 0a.5.5 0 0 0 .16 
1h.5v2h-1c-.55 0-1 .45-1 1h3v3l.44 1 .56-1v-3h3c0-.55-.45-1-1-1h-1v-2h.5a.5.5 0 
1 0 0-1h-4a.5.5 0 0 0-.09 0 .5.5 0 0 0-.06 0z" /></svg>
diff --git a/web/html/images/pin.svg b/web/html/images/pin.svg
new file mode 100755
index 0000000..b4ee9eb
--- /dev/null
+++ b/web/html/images/pin.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg"; width="8" height="8" viewBox="0 0 8 8">
+  <path style="fill:#3366aa;fill-opacity:1" d="M1.34 0a.5.5 0 0 0 .16 
1h.5v2h-1c-.55 0-1 .45-1 1h3v3l.44 1 .56-1v-3h3c0-.55-.45-1-1-1h-1v-2h.5a.5.5 0 
1 0 0-1h-4a.5.5 0 0 0-.09 0 .5.5 0 0 0-.06 0z" />
+</svg>
diff --git a/web/html/images/unpin.min.svg b/web/html/images/unpin.min.svg
new file mode 100755
index 0000000..3cf2413
--- /dev/null
+++ b/web/html/images/unpin.min.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg"; width="8" height="8" viewBox="0 0 8 
8"><path style="fill:#3366aa;fill-opacity:1" d="M1.34 0a.5.5 0 0 0 .16 
1h.5v2h-1c-.55 0-1 .45-1 1h3v3l.44 1 .56-1v-3h3c0-.55-.45-1-1-1h-1v-2h.5a.5.5 0 
1 0 0-1h-4a.5.5 0 0 0-.09 0 .5.5 0 0 0-.06 0z" /><path 
style="fill:#3366aa;fill-opacity:1" d="m6.4 0l1 1-6.4 6.8-1-1z" /></svg>
diff --git a/web/html/images/unpin.svg b/web/html/images/unpin.svg
new file mode 100755
index 0000000..de89715
--- /dev/null
+++ b/web/html/images/unpin.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg"; width="8" height="8" viewBox="0 0 8 8">
+  <path style="fill:#3366aa;fill-opacity:1" d="M1.34 0a.5.5 0 0 0 .16 
1h.5v2h-1c-.55 0-1 .45-1 1h3v3l.44 1 .56-1v-3h3c0-.55-.45-1-1-1h-1v-2h.5a.5.5 0 
1 0 0-1h-4a.5.5 0 0 0-.09 0 .5.5 0 0 0-.06 0z" />
+  <path style="fill:#3366aa;fill-opacity:1" d="m6.4 0l1 1 -6.4 6.8 -1 -1z" />
+</svg>
diff --git a/web/html/index.php b/web/html/index.php
index ec99bb7..e99d22f 100644
--- a/web/html/index.php
+++ b/web/html/index.php
@@ -182,6 +182,8 @@ if (!empty($tokens[1]) && '/' . $tokens[1] == 
get_pkg_route()) {
                break;
        case "/images/x.min.svg":
        case "/images/pencil.min.svg":
+       case "/images/pin.min.svg":
+       case "/images/unpin.min.svg":
                header("Content-Type: image/svg+xml");
                readfile("./$path");
                break;
diff --git a/web/html/pkgbase.php b/web/html/pkgbase.php
index cbbf3cc..3ca6e55 100644
--- a/web/html/pkgbase.php
+++ b/web/html/pkgbase.php
@@ -99,6 +99,10 @@ if (check_token()) {
                list($ret, $output) = pkgbase_notify($ids, false);
        } elseif (current_action("do_DeleteComment")) {
                list($ret, $output) = pkgbase_delete_comment();
+       } elseif (current_action("do_PinComment")) {
+               list($ret, $output) = pkgbase_pin_comment();
+       } elseif (current_action("do_UnpinComment")) {
+               list($ret, $output) = pkgbase_unpin_comment();
        } elseif (current_action("do_SetKeywords")) {
                list($ret, $output) = pkgbase_set_keywords($base_id, 
preg_split("/[\s,;]+/", $_POST['keywords'], -1, PREG_SPLIT_NO_EMPTY));
        } elseif (current_action("do_FileRequest")) {
diff --git a/web/lib/credentials.inc.php b/web/lib/credentials.inc.php
index 648d78c..71bf5ff 100644
--- a/web/lib/credentials.inc.php
+++ b/web/lib/credentials.inc.php
@@ -8,6 +8,7 @@ define("CRED_ACCOUNT_SEARCH", 5);
 define("CRED_COMMENT_DELETE", 6);
 define("CRED_COMMENT_VIEW_DELETED", 22);
 define("CRED_COMMENT_EDIT", 25);
+define("CRED_COMMENT_PIN", 26);
 define("CRED_PKGBASE_ADOPT", 7);
 define("CRED_PKGBASE_SET_KEYWORDS", 8);
 define("CRED_PKGBASE_DELETE", 9);
@@ -60,6 +61,7 @@ function has_credential($credential, $approved_users=array()) 
{
        case CRED_COMMENT_DELETE:
        case CRED_COMMENT_VIEW_DELETED:
        case CRED_COMMENT_EDIT:
+       case CRED_COMMENT_PIN:
        case CRED_PKGBASE_ADOPT:
        case CRED_PKGBASE_SET_KEYWORDS:
        case CRED_PKGBASE_DELETE:
diff --git a/web/lib/pkgbasefuncs.inc.php b/web/lib/pkgbasefuncs.inc.php
index afccc7d..89ea09e 100644
--- a/web/lib/pkgbasefuncs.inc.php
+++ b/web/lib/pkgbasefuncs.inc.php
@@ -7,10 +7,11 @@ include_once("pkgreqfuncs.inc.php");
  *
  * @param string $base_id The package base ID to get comment count for
  * @param bool $include_deleted True if deleted comments should be included
+ * @param bool $only_pinned True if only pinned comments should be included
  *
  * @return string The number of comments left for a specific package
  */
-function pkgbase_comments_count($base_id, $include_deleted) {
+function pkgbase_comments_count($base_id, $include_deleted, 
$only_pinned=false) {
        $base_id = intval($base_id);
        if (!$base_id) {
                return null;
@@ -20,7 +21,10 @@ function pkgbase_comments_count($base_id, $include_deleted) {
        $q = "SELECT COUNT(*) FROM PackageComments ";
        $q.= "WHERE PackageBaseID = " . $base_id . " ";
        if (!$include_deleted) {
-               $q.= "AND DelUsersID IS NULL";
+               $q.= "AND DelUsersID IS NULL ";
+       }
+       if ($only_pinned) {
+               $q.= "AND NOT PinnedTS = 0";
        }
        $result = $dbh->query($q);
        if (!$result) {
@@ -36,10 +40,11 @@ function pkgbase_comments_count($base_id, $include_deleted) 
{
  * @param int $base_id The package base ID to get comments for
  * @param int $limit Maximum number of comments to return (0 means unlimited)
  * @param bool $include_deleted True if deleted comments should be included
+ * @param bool $only_pinned True when only pinned comments are to be included
  *
  * @return array All package comment information for a specific package base
  */
-function pkgbase_comments($base_id, $limit, $include_deleted) {
+function pkgbase_comments($base_id, $limit, $include_deleted, 
$only_pinned=false) {
        $base_id = intval($base_id);
        $limit = intval($limit);
        if (!$base_id) {
@@ -48,12 +53,17 @@ function pkgbase_comments($base_id, $limit, 
$include_deleted) {
 
        $dbh = DB::connect();
        $q = "SELECT PackageComments.ID, A.UserName AS UserName, UsersID, 
Comments, ";
-       $q.= "CommentTS, EditedTS, B.UserName AS EditUserName, ";
-       $q.= "DelUsersID, C.UserName AS DelUserName FROM PackageComments ";
+       $q.= "PackageBaseID, CommentTS, EditedTS, B.UserName AS EditUserName, ";
+       $q.= "DelUsersID, C.UserName AS DelUserName, ";
+       $q.= "PinnedTS FROM PackageComments ";
        $q.= "LEFT JOIN Users A ON PackageComments.UsersID = A.ID ";
        $q.= "LEFT JOIN Users B ON PackageComments.EditedUsersID = B.ID ";
        $q.= "LEFT JOIN Users C ON PackageComments.DelUsersID = C.ID ";
        $q.= "WHERE PackageBaseID = " . $base_id . " ";
+       
+       if ($only_pinned) {
+               $q.= "AND NOT PinnedTS = 0 ";
+       }
        if (!$include_deleted) {
                $q.= "AND DelUsersID IS NULL ";
        }
@@ -111,6 +121,69 @@ function pkgbase_add_comment($base_id, $uid, $comment) {
 }
 
 /**
+ * Pin a package comment
+ * 
+ * @return array Tuple of success/failure indicator and error message
+ */
+function pkgbase_pin_comment() {
+       $uid = uid_from_sid($_COOKIE["AURSID"]);
+       if (!$uid) {
+               return array(false, __("You must be logged in before you can 
edit package information."));
+       }
+
+       if (isset($_POST["comment_id"])) {
+               $comment_id = $_POST["comment_id"];
+       } else {
+               return array(false, __("Missing comment ID."));
+       }
+       
+       if (pkgbase_comments_count($_POST['package_base'], false, true) >= 5){
+               return array(false, __("No more than 5 comments can be 
pinned."));
+       }
+       
+       if (!can_pin_comment($comment_id)) {
+        return array(false, __("You are not allowed to pin this comment."));
+    }
+    
+       $dbh = DB::connect();
+       $q = "UPDATE PackageComments ";
+       $q.= "SET PinnedTS = UNIX_TIMESTAMP() ";
+       $q.= "WHERE ID = ".intval($comment_id);
+       $dbh->exec($q);
+       return array(true, __("Comment has been pinned."));
+}
+
+/**
+ * Unpin a package comment
+ * 
+ * @return array Tuple of success/failure indicator and error message
+ */
+function pkgbase_unpin_comment() {
+       $uid = uid_from_sid($_COOKIE["AURSID"]);
+       if (!$uid) {
+               return array(false, __("You must be logged in before you can 
edit package information."));
+       }
+
+       if (isset($_POST["comment_id"])) {
+               $comment_id = $_POST["comment_id"];
+       } else {
+               return array(false, __("Missing comment ID."));
+       }
+
+       if (!can_pin_comment($comment_id)) {
+        return array(false, __("You are not allowed to unpin this comment."));
+    }
+
+       $dbh = DB::connect();
+       $q = "UPDATE PackageComments ";
+       $q.= "SET PinnedTS = 0 ";
+       $q.= "WHERE ID = ".intval($comment_id);
+       $dbh->exec($q);
+       return array(true, __("Comment has been unpinned."));
+}
+
+/**
+
  * Get a list of all packages a logged-in user has voted for
  *
  * @param string $sid The session ID of the visitor
@@ -196,9 +269,17 @@ function pkgbase_display_details($base_id, $row, $SID="") {
                if ($SID) {
                        include('pkg_comment_box.php');
                }
+               
+               $include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
+
+               $limit_pinned = isset($_GET['pinned']) ? 0 : 5;
+               $pinned = pkgbase_comments($base_id, $limit_pinned, false, 
true);
+               if (!empty($pinned)) {
+                       include('pkg_comments.php');
+                       unset($pinned);
+               }
 
                $limit = isset($_GET['comments']) ? 0 : 10;
-               $include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
                $comments = pkgbase_comments($base_id, $limit, 
$include_deleted);
                if (!empty($comments)) {
                        include('pkg_comments.php');
diff --git a/web/lib/pkgfuncs.inc.php b/web/lib/pkgfuncs.inc.php
index cedc360..c0ed99c 100644
--- a/web/lib/pkgfuncs.inc.php
+++ b/web/lib/pkgfuncs.inc.php
@@ -83,6 +83,47 @@ function can_edit_comment_array($comment) {
 }
 
 /**
+ * Determine if the user can pin a specific package comment
+ *
+ * Only the Package Maintainer, Trusted Users, and Developers can pin
+ * comments. This function is used for the backend side of comment pinning.
+ * 
+ * @param string $comment_id The comment ID in the database
+ *
+ * @return bool True if the user can pin the comment, otherwise false
+ */
+function can_pin_comment($comment_id=0) {
+    $dbh = DB::connect();
+    
+    $q = "SELECT MaintainerUID FROM PackageBases AS pb ";
+    $q.= "LEFT JOIN PackageComments AS pc ON pb.ID = pc.PackageBaseID ";
+    $q.= "WHERE pc.ID = " . intval($comment_id);
+    $result = $dbh->query($q);
+    
+    if (!$result) {
+        return false;
+    }
+    
+    $uid = $result->fetch(PDO::FETCH_COLUMN, 0);
+    
+    return has_credential(CRED_COMMENT_PIN, array($uid));
+}
+
+/**
+ * Determine if the user can edit a specific package comment using an array
+ *
+ * Only the Package Maintainer, Trusted Users, and Developers can pin
+ * comments. This function is used for the frontend side of comment pinning.
+ *
+ * @param array $comment All database information relating a specific comment
+ *
+ * @return bool True if the user can edit the comment, otherwise false
+ */
+function can_pin_comment_array($comment) {
+    return can_pin_comment($comment['ID']);
+}
+
+/**
  * Check to see if the package name already exists in the database
  *
  * @param string $name The package name to check
@@ -581,9 +622,17 @@ function pkg_display_details($id=0, $row, $SID="") {
                if ($SID) {
                        include('pkg_comment_box.php');
                }
+               
+               $include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
+
+        $limit_pinned = isset($_GET['pinned']) ? 0 : 5;
+        $pinned = pkgbase_comments($base_id, $limit_pinned, false, true);
+        if (!empty($pinned)) {
+            include('pkg_comments.php');
+            unset($pinned);
+        }
 
                $limit = isset($_GET['comments']) ? 0 : 10;
-               $include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
                $comments = pkgbase_comments($base_id, $limit, 
$include_deleted);
                if (!empty($comments)) {
                        include('pkg_comments.php');
diff --git a/web/template/pkg_comments.php b/web/template/pkg_comments.php
index 21ce16f..dd71b93 100644
--- a/web/template/pkg_comments.php
+++ b/web/template/pkg_comments.php
@@ -1,18 +1,27 @@
 <?php
-if (isset($row['BaseID'])) {
-       /* On a package details page. */
-       $base_id = $row['BaseID'];
-} else {
-       /* On a package base details page. */
-       $base_id = $row['ID'];
+if (!isset($base_id)) {
+       if (isset($row['BaseID'])) {
+               /* On a package details page. */
+               $base_id = $row['BaseID'];
+       } else {
+               /* On a package base details page. */
+               $base_id = $row['ID'];
+       }
+}
+if (!isset($count)) {
+       $count = pkgbase_comments_count($base_id, $include_deleted);
 }
-$include_deleted = has_credential(CRED_COMMENT_VIEW_DELETED);
-$count = pkgbase_comments_count($base_id, $include_deleted);
 ?>
 <div id="news">
        <h3>
-               <a href="<?= htmlentities(get_pkgbase_uri($pkgbase_name), 
ENT_QUOTES) . '?' . mkurl('comments=all') ?>" title="<?= __('View all comments' 
, $count) ?> (<?= $count ?>)"><?= __('Latest Comments') ?></a>
-               <span class="arrow"></span>
+               <?php if (!isset($comments)): ?>
+                       <?php $comments = $pinned ?>
+                       <a href="<?= 
htmlentities(get_pkgbase_uri($pkgbase_name), ENT_QUOTES) . '?' . 
mkurl('comments=all') ?>" title="<?= __('View all comments' , $count) ?> (<?= 
$count ?>)"><?= __('Pinned Comments') ?></a>
+                       <span class="arrow"></span>
+               <?php else: ?>
+                               <a href="<?= 
htmlentities(get_pkgbase_uri($pkgbase_name), ENT_QUOTES) . '?' . 
mkurl('comments=all') ?>" title="<?= __('View all comments' , $count) ?> (<?= 
$count ?>)"><?= __('Latest Comments') ?></a>
+               <span class="arrow"></span>
+               <?php endif; ?>
        </h3>
 
        <?php while (list($indx, $row) = each($comments)): ?>
@@ -56,6 +65,29 @@ $count = pkgbase_comments_count($base_id, $include_deleted);
                        <?php if (!$row['DelUsersID'] && 
can_edit_comment_array($row)): ?>
                        <a href="<?= 
htmlspecialchars(get_pkgbase_uri($pkgbase_name) . 'edit-comment/?comment_id=' . 
$row['ID'], ENT_QUOTES) ?>" class="edit-comment" title="<?= __('Edit comment') 
?>"><img src="/images/pencil.min.svg" alt="<?= __('Edit comment') ?>" 
width="11" height="11"></a>
                        <?php endif; ?>
+
+                       <?php if (!$row['DelUsersID'] && !$row['PinnedTS'] && 
can_pin_comment_array($row)): ?>
+                               <form class="pin-comment-form" method="post" 
action="<?= htmlspecialchars(get_pkgbase_uri($pkgbase_name), ENT_QUOTES); ?>">
+                                       <fieldset style="display:inline;">
+                                               <input type="hidden" 
name="action" value="do_PinComment" />
+                                               <input type="hidden" 
name="comment_id" value="<?= $row['ID'] ?>" />
+                                               <input type="hidden" 
name="package_base" value="<?= $base_id ?>" />
+                                               <input type="hidden" 
name="token" value="<?= htmlspecialchars($_COOKIE['AURSID']) ?>" />
+                                               <input type="image" 
class="pin-comment" src="/images/pin.min.svg" width="11" height="11" alt="<?= 
__('Pin comment') ?>" title="<?= __('Pin comment') ?>" name="submit" value="1" 
/>
+                                       </fieldset>
+                               </form>
+                       <?php endif; ?>
+
+                       <?php if (!$row['DelUsersID'] && $row['PinnedTS'] && 
can_pin_comment_array($row)): ?>
+                               <form class="pin-comment-form" method="post" 
action="<?= htmlspecialchars(get_pkgbase_uri($pkgbase_name), ENT_QUOTES); ?>">
+                                       <fieldset style="display:inline;">
+                                               <input type="hidden" 
name="action" value="do_UnpinComment" />
+                                               <input type="hidden" 
name="comment_id" value="<?= $row['ID'] ?>" />
+                                               <input type="hidden" 
name="token" value="<?= htmlspecialchars($_COOKIE['AURSID']) ?>" />
+                                               <input type="image" 
class="pin-comment" src="/images/unpin.min.svg" width="11" height="11" alt="<?= 
__('Unpin comment') ?>" title="<?= __('Unpin comment') ?>" name="submit" 
value="1" />
+                                       </fieldset>
+                               </form>
+                       <?php endif; ?>
                </h4>
                <div class="article-content<?php if ($row['DelUsersID']): ?> 
comment-deleted<?php endif; ?>">
                        <p>
@@ -64,7 +96,7 @@ $count = pkgbase_comments_count($base_id, $include_deleted);
                </div>
        <?php endwhile; ?>
 
-<?php if ($count > 10 && !isset($_GET['comments'])): ?>
+<?php if ($count > 10 && !isset($_GET['comments']) && !isset($pinned)): ?>
        <h3>
                <a href="<?= htmlentities(get_pkgbase_uri($pkgbase_name), 
ENT_QUOTES) . '?' . mkurl('comments=all') ?>" title="<?= __('View all 
comments') ?> (<?= $count ?>)"><?= __('All comments', $count) ?></a>
        </h3>
-- 
2.6.3

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