Moved javascript into javascript file

assets/javascripts/calendar.js

@@ -19,4 +19,67 @@ document.addEventListener('DOMContentLoaded', function() {
       clickedBlock.classList.toggle('open');
     }
   });
-});
+});
+
+(function() {
+  const STORAGE_KEY_ONLY_APPTS = 'redmine_cal_only_appointments';
+  const STORAGE_KEY_HIDE_PAST  = 'redmine_cal_hide_past_weeks';
+
+  window.scrollToToday = function() {
+    const todayElement = document.getElementById('today');
+    if (todayElement) {
+      todayElement.scrollIntoView({ behavior: 'smooth', block: 'center' });
+    }
+  };
+
+  document.addEventListener('DOMContentLoaded', function() {
+    const urlParams = new URLSearchParams(window.location.search);
+    let needsRedirect = false;
+
+    // Sync "Show Customer Appointments Only" with localStorage if missing from URL
+    if (!urlParams.has('only_appointments') && localStorage.getItem(STORAGE_KEY_ONLY_APPTS) === '1') {
+      urlParams.set('only_appointments', '1');
+      needsRedirect = true;
+    }
+
+    // Sync "Hide Past Weeks" with localStorage if missing from URL
+    if (!urlParams.has('hide_past_weeks') && localStorage.getItem(STORAGE_KEY_HIDE_PAST) === '1') {
+      urlParams.set('hide_past_weeks', '1');
+      needsRedirect = true;
+    }
+
+    if (needsRedirect) {
+      window.location.search = urlParams.toString();
+      return;
+    }
+
+    // Automatically scroll to today if present and no hash anchor is in the URL
+    if (!window.location.hash) {
+      window.scrollToToday();
+    }
+  });
+
+  window.toggleOnlyAppointments = function(checked) {
+    const urlParams = new URLSearchParams(window.location.search);
+    if (checked) {
+      urlParams.set('only_appointments', '1');
+      localStorage.setItem(STORAGE_KEY_ONLY_APPTS, '1');
+    } else {
+      urlParams.delete('only_appointments');
+      localStorage.setItem(STORAGE_KEY_ONLY_APPTS, '0');
+    }
+    window.location.search = urlParams.toString();
+  };
+
+  window.toggleHidePastWeeks = function(checked) {
+    const urlParams = new URLSearchParams(window.location.search);
+    if (checked) {
+      urlParams.set('hide_past_weeks', '1');
+      localStorage.setItem(STORAGE_KEY_HIDE_PAST, '1');
+    } else {
+      urlParams.delete('hide_past_weeks');
+      localStorage.setItem(STORAGE_KEY_HIDE_PAST, '0');
+    }
+    window.location.search = urlParams.toString();
+  };
+})();