create facts section & by the way reengineer the IntersectionObserver function

.pages.yml

@@ -78,6 +78,10 @@ content:
         - name: websiteId
           label: Umami Website ID
           type: string
+        - name: factsUrl
+          label: Facts JSON URL
+          description: URL to fetch facts data from
+          type: string
 
   - name: socialmedia
     label: Social Media

content/de/facts.md

@@ -0,0 +1,6 @@
+---
+title: "Fakten"
+slug: "facts"
+---
+
+Einige Fakten über mich...

content/en/facts.md

@@ -0,0 +1,6 @@
+---
+title: "Facts"
+slug: "facts"
+---
+
+Some facts about me...

hugo.toml

@@ -99,3 +99,4 @@ defaultContentLanguage = 'de'
     twitterUsername = "@michivonah"
     umamiUrl = "https://data.mchvnh.ch/script.js"
     websiteId = "9b188ed8-77b0-4238-aef5-c1b3d48106e4"
+    factsUrl = "https://cdn.michivonah.ch/facts.json"

i18n/de.toml

@@ -16,3 +16,4 @@ no-more-projects = 'Keine weiteren Projekte verfügbar'
 faq = 'Häufige Fragen'
 faq-short = 'FAQ'
 close = 'Schliessen'
+facts = 'Fakten'

i18n/en.toml

@@ -16,3 +16,4 @@ no-more-projects = 'No more projects available'
 faq = 'Frequently Asked Questions'
 faq-short = 'FAQ'
 close = 'Close'
+facts = 'Facts'

layouts/_default/baseof.html

@@ -13,6 +13,8 @@
 
         {{ partial "projects.html" . }}
 
+        {{ partial "facts.html" . }}
+
         {{ partial "faq.html" . }}
     </div>
 

layouts/partials/facts.html

@@ -0,0 +1,34 @@
+<div id="facts" class="facts">
+    <div class="facts-intro fade-up">
+        {{ with .Site.GetPage "facts" }}
+        <h1>{{ .Title }}</h1>
+        <p>{{ .Content }}</p>
+        {{ end }}
+    </div>
+    <div class="fact-container">
+        {{ $url := .Site.Params.factsUrl }}
+        {{ with try (resources.GetRemote $url) }}
+            {{ with .Err }}
+                {{ errorf "%s" . }}
+                {{ else with .Value }}
+                    {{ $facts := . | transform.Unmarshal }}
+                    {{ if $facts }}
+                        {{ range $fact := $facts }}
+                            {{ $count := 0 }}
+                            {{ if isset $fact "total" }}
+                                {{ $count = $fact.total }}
+                            {{ else if isset $fact "items" }}
+                                {{ $count = len $fact.items }}
+                            {{ end }}
+                        <div class="fact fade-up">
+                            <p class="fact-counter" data-count="{{ $count }}"></p>
+                            <p>{{ index $fact.titles $.Lang }}</p>
+                        </div>
+                        {{ end }}
+                    {{ else }}
+                    {{ errorf "Unable to get remote resource %q" $url }}
+                    {{ end }}
+                {{ end }}
+        {{ end }}
+    </div>
+</div>

layouts/partials/navbar.html

@@ -5,6 +5,7 @@
             <a href="#" alt='{{ T "home" }}'>{{ T "home" }}</a>
             <a href="#about" alt='{{ T "about" }}'>{{ T "about" }}</a>
             <a href="#projects" alt='{{ T "projects" }}'>{{ T "projects" }}</a>
+            <a href="#facts" alt='{{ T "facts" }}'>{{ T "facts" }}</a>
             <a href="#faq" alt='{{ T "faq-short" }}'>{{ T "faq-short" }}</a>
             <a href="https://blog.michivonah.ch" alt='{{ T "blog" }}'>{{ T "blog" }}</a>
             <a href="#contact" alt='{{ T "contact" }}'>{{ T "contact" }}</a>

static/main.js

@@ -100,29 +100,65 @@ function updateNavStyle(){
     document.querySelector("nav").classList.toggle("small", window.scrollY > 20);
 }
 
-// intersection observer for animations
-// credits: https://coolcssanimation.com/how-to-trigger-a-css-animation-on-scroll/
+/**
+ * Template for easily creating a IntersectionObserver
+ * @param {*} triggerElement Element which triggers the IntersectionObserver
+ * @param {*} callback Function which gets interesction object back
+ * @param {*} rootMargin Parameter rootMargin of the IntersectionObserver
+ * @param {*} threshold  Parameter threshold of the IntersectionObserver
+ * @returns IntersectionObserver
+ */
+function createIntersectionObserver(triggerElement, callback, rootMargin = '0px 0px 5% 0px', threshold = 0.1){
+    if(triggerElement){
+        const observer = new IntersectionObserver(entries => {
+            entries.forEach(entry => {     
+              callback(entry);
+            });
+        }, { rootMargin, threshold });
+        return observer.observe(triggerElement);
+    }
+}
+
+/**
+ * Function which applies an IntersectionObserver
+ * for running animations on scroll/visibility of a container.
+ * 
+ * Original inspiration: https://coolcssanimation.com/how-to-trigger-a-css-animation-on-scroll/
+ * @param {*} triggerSelector Query selector of the element, which should trigger the animation
+ * @param {*} animationClass Class to append when animation is triggered
+ * @param {*} targetElement Element to apply the animation (css class) to. Will applied to triggerSelector if not defined.
+ * @returns IntersectionObserver
+ */
 function animationOnScroll(triggerSelector, animationClass, targetElement){
     const trigger = document.querySelector(triggerSelector);
     const target = ((targetElement) ? document.querySelector(targetElement) : trigger);
 
-    if(trigger){
-        const observer = new IntersectionObserver(entries => {
-            entries.forEach(entry => {     
-              if (entry.isIntersecting) {
-                target.classList.add(animationClass);
-              }
-              else{
-                target.classList.remove(animationClass);
-              }
-            });
-        }, { rootMargin: '0px 0px 5% 0px', threshold: 0.1 });
-          
-        return observer.observe(trigger);
-    }
+    return createIntersectionObserver(trigger, (entry) => {
+        entry.isIntersecting ? target.classList.add(animationClass) : target.classList.remove(animationClass);
+    });
 }
 
+/**
+ * Creates IntersectionObserver for triggering counter animation
+ * @param {*} elementSelector Selector of the element(s) to apply the counter effect to
+ * @param {*} cssPropertyName CSS Property with counter's value
+ * @param {*} valueAttribute HTML data attribute with the counter's final value
+ */
+function countOnScroll(elementSelector, cssPropertyName, valueAttribute){
+    const items = document.querySelectorAll(elementSelector);
+
+    items.forEach(element => {
+        const value = parseInt(element.getAttribute(valueAttribute));
+
+        createIntersectionObserver(element, (entry) => {
+            element.style.setProperty(cssPropertyName, entry.isIntersecting  ? value : 0);
+        });
+    });
+}
+
+// apply on scroll effects
 animationOnScroll('.contact-title-wrapper', 'typewriter-animation', '.contact-title');
+countOnScroll('.fact-counter', '--factCounter', 'data-count');
 
 // calculate age
 function calculateAge(selector){

static/style.css

@@ -777,6 +777,71 @@ nav.small .nav-links a:last-child:focus{
     }
 }
 
+/* FACTS */
+.facts{
+    margin-top: 30px;
+    padding-bottom: 20px;
+    text-align: center;
+    scroll-margin-top: calc(var(--navSmallHeight) + 10px);
+}
+
+.fact-container{
+    display: flex;
+    flex-direction: row;
+    justify-content: space-around;
+}
+
+.fact{
+    display: flex;
+    flex-direction: column;
+    font-size: 1.2rem;
+    font-weight: 600;
+    width: 100%;
+    padding-block: 40px 20px;
+}
+
+.fact p{
+    margin: 5px 0;
+    padding: 0;
+}
+
+@media screen and (max-width:690px){
+    .fact-container{
+        flex-direction: column;
+    }
+
+    .fact{
+        padding-block: 10px;
+    }
+}
+
+@property --factCounter{
+    syntax: '<integer>';
+    initial-value: 0;
+    inherits: false;
+}
+
+.fact-counter{
+    font-size: 3.8rem;
+    font-weight: 700;
+    color: var(--primary);
+    transition: --factCounter 1s, var(--baseTransition);
+    counter-reset: factCounter var(--factCounter);
+}
+
+@media (pointer: fine){
+    .fact-counter:hover,
+    .fact-counter:focus{
+        transform: scale(1.1);
+        transition: var(--baseTransition);
+        filter: drop-shadow(0 0 0.6rem var(--primary));
+    }
+}
+
+.fact-counter::after{
+    content: counter(factCounter);
+}
+
 /* FAQ */
 .faq{
     padding-block: 40px;