From 1e8d97e6d3642bf1893382eec43b29617af89d75 Mon Sep 17 00:00:00 2001
From: frankknoll <Knoll_Frank@web.de>
Date: Thu, 17 Mar 2022 16:52:19 +0100
Subject: [PATCH] adding median

---
 docs/FreeBedsChartView.js   |  8 ++++++++
 docs/Utils.js               |  9 +++++++++
 docs/intensivstationen.html |  1 +
 docs/intensivstationen.js   | 19 +++++++++++++++++--
 src/help.txt                |  4 ++--
 5 files changed, 37 insertions(+), 4 deletions(-)
 create mode 100644 docs/Utils.js

diff --git a/docs/FreeBedsChartView.js b/docs/FreeBedsChartView.js
index b5a3becb8aa..4ad0fc95cbc 100644
--- a/docs/FreeBedsChartView.js
+++ b/docs/FreeBedsChartView.js
@@ -57,6 +57,14 @@ class FreeBedsChartView {
                         yAxisKey: 'free_beds_divided_by_all_beds_in_percent'
                     },
                     backgroundColor: 'rgba(0, 0, 150, 1)'
+                },
+                {
+                    label: 'Median des Anteils freier Betten',
+                    data: data,
+                    parsing: {
+                        yAxisKey: 'median_free_beds_in_percent'
+                    },
+                    backgroundColor: 'rgba(0, 150, 150, 1)'
                 }
             ]
         };
diff --git a/docs/Utils.js b/docs/Utils.js
new file mode 100644
index 00000000000..a1acab191aa
--- /dev/null
+++ b/docs/Utils.js
@@ -0,0 +1,9 @@
+class Utils {
+
+    // adapted from https://www.w3resource.com/javascript-exercises/fundamental/javascript-fundamental-exercise-88.php
+    static median(arr) {
+        const mid = Math.floor(arr.length / 2);
+        const nums = [...arr].sort((a, b) => a - b);
+        return arr.length % 2 !== 0 ? nums[mid] : (nums[mid - 1] + nums[mid]) / 2;
+    }
+}
diff --git a/docs/intensivstationen.html b/docs/intensivstationen.html
index b1629303881..5252de1e7d6 100644
--- a/docs/intensivstationen.html
+++ b/docs/intensivstationen.html
@@ -9,6 +9,7 @@
   <script src="https://cdn.jsdelivr.net/npm/chart.js@^3"></script>
   <script src="https://cdn.jsdelivr.net/npm/moment@^2"></script>
   <script src="https://cdn.jsdelivr.net/npm/chartjs-adapter-moment@^1"></script>
+  <script src="./Utils.js"></script>
   <script src="./UIUtils.js"></script>
   <script src="./IntensiveCareCapacitiesChartView.js"></script>
   <script src="./FreeBedsChartView.js"></script>
diff --git a/docs/intensivstationen.js b/docs/intensivstationen.js
index 1cc0aece53a..11ff6378c84 100644
--- a/docs/intensivstationen.js
+++ b/docs/intensivstationen.js
@@ -16,12 +16,18 @@ function displayFreeBedsChart({ freeBedsChartView, kreisText, kreisValue }) {
         .then(json =>
             freeBedsChartView.displayChart(
                 {
-                    data: get_free_beds_divided_by_all_beds_in_percent(json.data),
+                    data: getDataDicts(json.data),
                     title: kreisText
                 }));
 }
 
-function get_free_beds_divided_by_all_beds_in_percent(data) {
+function getDataDicts(data) {
+    const dataDicts = get_free_beds_divided_by_all_beds_in_percent_dataDicts(data);
+    add_median_free_beds_in_percent(dataDicts);
+    return dataDicts;
+}
+
+function get_free_beds_divided_by_all_beds_in_percent_dataDicts(data) {
     return data.map(({ date, betten_frei, betten_belegt }) =>
     (
         {
@@ -30,3 +36,12 @@ function get_free_beds_divided_by_all_beds_in_percent(data) {
         }
     ));
 }
+
+function add_median_free_beds_in_percent(dataDicts) {
+    const median_free_beds_in_percent =
+        Utils.median(
+            dataDicts.map(dataDict => dataDict.free_beds_divided_by_all_beds_in_percent));
+    for (const dataDict of dataDicts) {
+        dataDict["median_free_beds_in_percent"] = median_free_beds_in_percent;
+    }
+}
\ No newline at end of file
diff --git a/src/help.txt b/src/help.txt
index cb650c20382..93513f7ef22 100644
--- a/src/help.txt
+++ b/src/help.txt
@@ -47,8 +47,8 @@ man 5 fcrontab
 fcrontab -e
 
 fcrontab -l
-# each day at 14:00 Uhr
-00 14 * * * /home/frankknoll/Dokumente/Corona/projects/HowBadIsMyBatch-pages/src/intensivstationen/intensivstationen.sh
+# each day at 13:30 Uhr
+30 13 * * * /home/frankknoll/Dokumente/Corona/projects/HowBadIsMyBatch-pages/src/intensivstationen/intensivstationen.sh
 
 systemctl status fcron
 tail -f /var/log/syslog