From 7049a08bcdadb6475133e76501ba34f9a6f46bf0 Mon Sep 17 00:00:00 2001
From: Michael Weimann <mail@michael-weimann.eu>
Date: Tue, 18 Oct 2022 22:34:53 +0200
Subject: [PATCH] Replace moment-countdown with countdown function

---
 includes/view/ShiftEntry_view.php       |  6 +-
 includes/view/Shifts_view.php           |  2 +-
 includes/view/User_view.php             | 10 ++--
 resources/assets/js/countdown.js        | 80 +++++++++++++++++++++++++
 resources/assets/js/moment-countdown.js | 21 -------
 resources/assets/js/vendor.js           | 11 +---
 resources/views/pages/login.twig        |  2 +-
 7 files changed, 91 insertions(+), 41 deletions(-)
 create mode 100644 resources/assets/js/countdown.js
 delete mode 100644 resources/assets/js/moment-countdown.js

diff --git a/includes/view/ShiftEntry_view.php b/includes/view/ShiftEntry_view.php
index 45238e9f..73fff1b8 100644
--- a/includes/view/ShiftEntry_view.php
+++ b/includes/view/ShiftEntry_view.php
@@ -84,7 +84,7 @@ function ShiftEntry_create_view_admin($shift, Room $room, $angeltype, $angeltype
 {
     return page_with_title(
         ShiftEntry_create_title() . ': ' . $shift['name']
-        . ' <small class="moment-countdown" data-timestamp="' . $shift['start'] . '">%c</small>',
+        . ' <small data-countdown-ts="' . $shift['start'] . '">%c</small>',
         [
             Shift_view_header($shift, $room),
             info(__('Do you want to sign up the following user for this shift?'), true),
@@ -111,7 +111,7 @@ function ShiftEntry_create_view_supporter($shift, Room $room, $angeltype, $signu
 {
     return page_with_title(
         ShiftEntry_create_title() . ': ' . $shift['name']
-        . ' <small class="moment-countdown" data-timestamp="' . $shift['start'] . '">%c</small>',
+        . ' <small data-countdown-ts="' . $shift['start'] . '">%c</small>',
         [
             Shift_view_header($shift, $room),
             info(sprintf(
@@ -139,7 +139,7 @@ function ShiftEntry_create_view_user($shift, Room $room, $angeltype, $comment)
 {
     return page_with_title(
         ShiftEntry_create_title() . ': ' . $shift['name']
-        . ' <small class="moment-countdown" data-timestamp="' . $shift['start'] . '">%c</small>',
+        . ' <small data-countdown-ts="' . $shift['start'] . '">%c</small>',
         [
             Shift_view_header($shift, $room),
             info(sprintf(__('Do you want to sign up for this shift as %s?'), AngelType_name_render($angeltype)), true),
diff --git a/includes/view/Shifts_view.php b/includes/view/Shifts_view.php
index 91e075ae..b1caa7e7 100644
--- a/includes/view/Shifts_view.php
+++ b/includes/view/Shifts_view.php
@@ -191,7 +191,7 @@ function Shift_view($shift, $shifttype, Room $room, $angeltypes_source, ShiftSig
     }
 
     return page_with_title(
-        $shift['name'] . ' <small class="moment-countdown" data-timestamp="' . $shift['start'] . '">%c</small>',
+        $shift['name'] . ' <small data-countdown-ts="' . $shift['start'] . '">%c</small>',
         $content
     );
 }
diff --git a/includes/view/User_view.php b/includes/view/User_view.php
index 7a33457f..2aef3b73 100644
--- a/includes/view/User_view.php
+++ b/includes/view/User_view.php
@@ -317,23 +317,23 @@ function User_shift_state_render($user)
 
     if ($nextShift['start'] > time()) {
         if ($nextShift['start'] - time() > 3600) {
-            return '<span class="text-success moment-countdown" data-timestamp="' . $nextShift['start'] . '">'
+            return '<span class="text-success" data-countdown-ts="' . $nextShift['start'] . '">'
                 . __('Next shift %c')
                 . '</span>';
         }
-        return '<span class="text-warning moment-countdown" data-timestamp="' . $nextShift['start'] . '">'
+        return '<span class="text-warning" data-countdown-ts="' . $nextShift['start'] . '">'
             . __('Next shift %c')
             . '</span>';
     }
     $halfway = ($nextShift['start'] + $nextShift['end']) / 2;
 
     if (time() < $halfway) {
-        return '<span class="text-danger moment-countdown" data-timestamp="' . $nextShift['start'] . '">'
+        return '<span class="text-danger" data-countdown-ts="' . $nextShift['start'] . '">'
             . __('Shift started %c')
             . '</span>';
     }
 
-    return '<span class="text-danger moment-countdown" data-timestamp="' . $nextShift['end'] . '">'
+    return '<span class="text-danger" data-countdown-ts="' . $nextShift['end'] . '">'
         . __('Shift ends %c')
         . '</span>';
 }
@@ -350,7 +350,7 @@ function User_last_shift_render($user)
     }
 
     $lastShift = array_shift($last_shifts);
-    return '<span class="moment-countdown" data-timestamp="' . $lastShift['end'] . '">'
+    return '<span data-countdown-ts="' . $lastShift['end'] . '">'
         . __('Shift ended %c')
         . '</span>';
 }
diff --git a/resources/assets/js/countdown.js b/resources/assets/js/countdown.js
new file mode 100644
index 00000000..debd8fb5
--- /dev/null
+++ b/resources/assets/js/countdown.js
@@ -0,0 +1,80 @@
+const lang = document.documentElement.getAttribute('lang');
+
+const templateFuture = 'in %value %unit';
+const templatePast = lang === "en"
+    ? '%value %unit ago'
+    : 'vor %value %unit';
+
+const yearUnits = lang === "en"
+    ? ["year", "years"]
+    : ["Jahr", "Jahren"];
+
+const monthUnits = lang === "en"
+    ? ["month", "months"]
+    : ["Monat", "Monaten"];
+
+const dayUnits = lang === "en"
+    ? ["day", "days"]
+    : ["Tag", "Tagen"];
+
+const hourUnits = lang === "en"
+    ? ["hour", "hours"]
+    : ["Stunde", "Stunden"];
+
+const minuteUnits = lang === "en"
+    ? ["minute", "minutes"]
+    : ["Minute", "Minuten"];
+
+const secondUnits = lang === "en"
+    ? ["second", "seconds"]
+    : ["Sekunde", "Sekunden"];
+
+const nowString = lang === "en" ? "now" : "jetzt";
+
+const secondsHour = 60 * 60;
+
+const timeFrames = [
+    [365 * 24 * 60 * 60, yearUnits],
+    [30 * 24 * 60 * 60, monthUnits],
+    [24 * 60 * 60, dayUnits],
+    [secondsHour, hourUnits],
+    [60, minuteUnits],
+    [1, secondUnits],
+];
+
+function formatFromNow(timestamp) {
+    const now = Date.now() / 1000;
+    const diff = Math.abs(timestamp - now);
+    const ago = now > timestamp;
+
+    for (const [duration, [singular, plural]] of timeFrames) {
+        const value = diff < secondsHour
+            ? Math.floor(diff / duration)
+            : Math.round(diff / duration);
+
+        if (value) {
+            const template = ago ? templatePast : templateFuture;
+            const unit = value === 1 ? singular : plural;
+            return template
+                .replace("%value", value)
+                .replace("%unit", unit);
+        }
+    }
+
+    return nowString;
+}
+
+/**
+ * Initialises all countdown fields on the page.
+ */
+$(document).ready(function () {
+    $.each($('[data-countdown-ts]'), function (i, e) {
+        var span = $(e);
+        const timestamp = span.data("countdown-ts");
+        var text = span.html();
+        span.html(text.replace('%c', formatFromNow(timestamp)));
+        setInterval(function () {
+            span.html(text.replace('%c', formatFromNow(timestamp)));
+        }, 1000);
+    });
+});
diff --git a/resources/assets/js/moment-countdown.js b/resources/assets/js/moment-countdown.js
deleted file mode 100644
index d12ee7ab..00000000
--- a/resources/assets/js/moment-countdown.js
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Initialize all moment countdowns on the page. A moment countdown has the
- * class 'moment-countdown' and the attribute 'data-timestamp' which defines the
- * countdown's time goal.
- */
-$(document).ready(function () {
-    if (typeof moment !== 'undefined') {
-        moment.locale($('html').attr('lang'));
-
-        $.each($('.moment-countdown'), function (i, e) {
-            var span = $(e);
-            var text = span.html();
-            /* global moment */
-            var timestamp = moment(parseInt(span.attr('data-timestamp') * 1000));
-            span.html(text.replace('%c', timestamp.fromNow()));
-            setInterval(function () {
-                span.html(text.replace('%c', timestamp.fromNow()));
-            }, 1000);
-        });
-    }
-});
diff --git a/resources/assets/js/vendor.js b/resources/assets/js/vendor.js
index 9df21462..9ea07a1b 100644
--- a/resources/assets/js/vendor.js
+++ b/resources/assets/js/vendor.js
@@ -1,18 +1,9 @@
 require('core-js/stable');
 window.$ = window.jQuery = require('jquery');
 window.bootstrap = require('bootstrap');
-window.moment = require('moment');
-require('moment/locale/de');
 require('./forms');
 require('./sticky-headers');
-require('./moment-countdown');
-
-moment.updateLocale('en', {
-    week : {
-        dow : 1, // Monday is the first day of the week.
-        doy : 4  // The week that contains Jan 4th is the first week of the year.
-    }
-});
+require('./countdown');
 
 $.ajaxSetup({
     headers: {'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')}
diff --git a/resources/views/pages/login.twig b/resources/views/pages/login.twig
index cf012078..0bf31660 100644
--- a/resources/views/pages/login.twig
+++ b/resources/views/pages/login.twig
@@ -21,7 +21,7 @@
                 {% if date > date() %}
                     <div class="col-sm-3 text-center d-none d-sm-block">
                         <h4>{{ name }}</h4>
-                        <div class="moment-countdown h2 text-body" data-timestamp="{{ date.getTimestamp }}">%c</div>
+                        <div class="h2 text-body" data-countdown-ts="{{ date.getTimestamp }}">%c</div>
                         <small>{{ date.format(__('Y-m-d')) }}</small>
                     </div>
                 {% endif %}