From 0384a274e584d99f818a50d5c467caf3f3435623 Mon Sep 17 00:00:00 2001
From: Sukhwinder Dhillon <sukhwinder33445@gmail.com>
Date: Tue, 11 Feb 2025 13:55:44 +0100
Subject: [PATCH] Schedule detail: Introduce current time indicator

---
 library/Notifications/Widget/Timeline.php | 38 ++++++++++++++++++++++-
 public/css/timeline.less                  | 38 ++++++++++++++++++++++-
 2 files changed, 74 insertions(+), 2 deletions(-)

diff --git a/library/Notifications/Widget/Timeline.php b/library/Notifications/Widget/Timeline.php
index 49083cc6..0dd310fc 100644
--- a/library/Notifications/Widget/Timeline.php
+++ b/library/Notifications/Widget/Timeline.php
@@ -12,9 +12,11 @@
 use Icinga\Module\Notifications\Widget\TimeGrid\EntryProvider;
 use Icinga\Module\Notifications\Widget\TimeGrid\GridStep;
 use Icinga\Module\Notifications\Widget\TimeGrid\Timescale;
+use Icinga\Module\Notifications\Widget\TimeGrid\Util;
 use Icinga\Module\Notifications\Widget\Timeline\Entry;
 use Icinga\Module\Notifications\Widget\Timeline\MinimalGrid;
 use Icinga\Module\Notifications\Widget\Timeline\Rotation;
+use IntlDateFormatter;
 use ipl\Html\Attributes;
 use ipl\Html\BaseHtmlElement;
 use ipl\Html\HtmlElement;
@@ -23,6 +25,7 @@
 use ipl\Web\Style;
 use ipl\Web\Url;
 use ipl\Web\Widget\Icon;
+use Locale;
 use SplObjectStorage;
 use Traversable;
 
@@ -314,8 +317,41 @@ protected function assemble()
                 )
             );
 
+            $dateFormatter = new IntlDateFormatter(
+                Locale::getDefault(),
+                IntlDateFormatter::NONE,
+                IntlDateFormatter::SHORT
+            );
+
+            $now = new DateTime();
+            $currentTime = new HtmlElement(
+                'div',
+                new Attributes(['class' => 'time-hand']),
+                new HtmlElement(
+                    'div',
+                    new Attributes(['class' => 'now', 'title' => $dateFormatter->format($now)]),
+                    Text::create($this->translate('now'))
+                )
+            );
+
+            $now = Util::roundToNearestThirtyMinute($now);
+
+            $this->getStyle()->addFor($currentTime, [
+                '--timeStartColumn' =>
+                    $now->format('G') * 2 // 2 columns per hour
+                    + ($now->format('i') >= 30 ? 1 : 0) // 1 column for the half hour
+                    + 1 // CSS starts counting columns from 1, not zero
+            ]);
+
+            $clock = new HtmlElement(
+                'div',
+                new Attributes(['class' => 'clock']),
+                new HtmlElement('div', new Attributes(['class' => 'current-day']), $currentTime)
+            );
+
             $this->getGrid()
-                ->addHtml(new Timescale($this->days, $this->getStyle()));
+                ->addHtml(new Timescale($this->days, $this->getStyle()))
+                ->addHtml($clock);
         }
 
         $this->addHtml(
diff --git a/public/css/timeline.less b/public/css/timeline.less
index 94edbbb0..7344cb06 100644
--- a/public/css/timeline.less
+++ b/public/css/timeline.less
@@ -15,7 +15,7 @@
     .time-grid-header {
       box-sizing: border-box;
       position: sticky;
-      z-index: 1;
+      z-index: 2; // overlap the .clock .time-hand
       top: 0;
     }
 
@@ -35,6 +35,7 @@
     .overlay .entry {
       margin-top: 1em;
       margin-bottom: 1em;
+      z-index: 2; // overlap the .clock .time-hand
 
       .title {
         height: 100%;
@@ -95,6 +96,34 @@
         }
       }
     }
+
+    .clock {
+      display: grid;
+      grid-template-columns: repeat(var(--primaryColumns), 1fr);
+      grid-area: ~"3 / 2 / 4 / 3";
+      border-top: 1px solid transparent; // left not required, otherwise the .time-hand is not aligned properly
+
+      .current-day {
+        display: grid;
+        grid-template-columns: repeat(var(--columnsPerStep), 1fr);
+        grid-area: ~"1 / 1 / 2 / 2";
+
+        .time-hand {
+          grid-area: ~"1 / var(--timeStartColumn) / 2 / calc(var(--timeStartColumn) + 1)";
+          display: flex;
+          align-items: flex-end;
+          width: 1px;
+          border-left: 1px solid red;
+          z-index: 1;
+
+          .now {
+            .rounded-corners();
+            padding: 0 .25em;
+            transform: translate(-50%, 50%);
+          }
+        }
+      }
+    }
   }
 }
 
@@ -151,6 +180,13 @@
       background: @gray-lighter;
     }
   }
+
+  .clock .now {
+    background-color: @gray-light;
+    font-size: 0.75em;
+    color: red;
+    cursor: pointer;
+  }
 }
 
 .timeline.minimal-layout .empty-notice {