From 8987dc90f4bafdada6caec87cbd7881afb26db5e Mon Sep 17 00:00:00 2001
From: Gregory Trullemans <redj@MacBook-Pro-de-Gregory.local>
Date: Thu, 13 Oct 2022 12:50:28 +0200
Subject: [PATCH] Add library for time scale in chartjs

---
 .../chartjs/chartjs-adapter-moment_1.0.0.js   | 72 +++++++++++++++++++
 templates/base.html                           |  2 +
 2 files changed, 74 insertions(+)
 create mode 100644 static/js/plugins/chartjs/chartjs-adapter-moment_1.0.0.js

diff --git a/static/js/plugins/chartjs/chartjs-adapter-moment_1.0.0.js b/static/js/plugins/chartjs/chartjs-adapter-moment_1.0.0.js
new file mode 100644
index 0000000000..d70fafafd5
--- /dev/null
+++ b/static/js/plugins/chartjs/chartjs-adapter-moment_1.0.0.js
@@ -0,0 +1,72 @@
+/*!
+  * chartjs-adapter-moment v1.0.0
+  * https://www.chartjs.org
+  * (c) 2021 chartjs-adapter-moment Contributors
+  * Released under the MIT license
+  */
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(require('moment'), require('chart.js')) :
+typeof define === 'function' && define.amd ? define(['moment', 'chart.js'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.moment, global.Chart));
+}(this, (function (moment, chart_js) { 'use strict';
+
+function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
+
+var moment__default = /*#__PURE__*/_interopDefaultLegacy(moment);
+
+const FORMATS = {
+  datetime: 'MMM D, YYYY, h:mm:ss a',
+  millisecond: 'h:mm:ss.SSS a',
+  second: 'h:mm:ss a',
+  minute: 'h:mm a',
+  hour: 'hA',
+  day: 'MMM D',
+  week: 'll',
+  month: 'MMM YYYY',
+  quarter: '[Q]Q - YYYY',
+  year: 'YYYY'
+};
+
+chart_js._adapters._date.override(typeof moment__default['default'] === 'function' ? {
+  _id: 'moment', // DEBUG ONLY
+
+  formats: function() {
+    return FORMATS;
+  },
+
+  parse: function(value, format) {
+    if (typeof value === 'string' && typeof format === 'string') {
+      value = moment__default['default'](value, format);
+    } else if (!(value instanceof moment__default['default'])) {
+      value = moment__default['default'](value);
+    }
+    return value.isValid() ? value.valueOf() : null;
+  },
+
+  format: function(time, format) {
+    return moment__default['default'](time).format(format);
+  },
+
+  add: function(time, amount, unit) {
+    return moment__default['default'](time).add(amount, unit).valueOf();
+  },
+
+  diff: function(max, min, unit) {
+    return moment__default['default'](max).diff(moment__default['default'](min), unit);
+  },
+
+  startOf: function(time, unit, weekday) {
+    time = moment__default['default'](time);
+    if (unit === 'isoWeek') {
+      weekday = Math.trunc(Math.min(Math.max(0, weekday), 6));
+      return time.isoWeekday(weekday).startOf('day').valueOf();
+    }
+    return time.startOf(unit).valueOf();
+  },
+
+  endOf: function(time, unit) {
+    return moment__default['default'](time).endOf(unit).valueOf();
+  }
+} : {});
+
+})));
\ No newline at end of file
diff --git a/templates/base.html b/templates/base.html
index e51835b7f7..56ee974c5a 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -49,6 +49,8 @@
     <script src="{% static "js/plugins/moment_2.29.1.min.js" %}"></script>
     <script src="{% static "js/plugins/moment_locale_en-gb.js" %}"></script>
     <script src="{% static "js/plugins/chartjs/chartjs_3.9.1.min.js" %}"></script>
+    <script src="https://cdn.jsdelivr.net/npm/moment@^2"></script>
+    <script src="{% static "js/plugins/chartjs/chartjs-adapter-moment_1.0.0.js" %}"></script>
 
     <!-- FullCalendar CSS -->
     <!-- <link href="{% static "js/plugins/fullcalendar/main.css" %}" rel="stylesheet" /> -->