Refactors resize and position utility handling

Extracts position calculation logic into a separate utility class

Introduces PositionUtils to centralize pixel and minute conversion methods
Removes redundant calculation methods from ResizeHandleManager
Updates Configuration to include default API endpoint

Simplifies resize and height management across components

src/configurations/CalendarConfig.ts

@@ -66,6 +66,7 @@ export class Configuration {
   public timeFormatConfig: ITimeFormatConfig;
   public currentWorkWeek: string;
   public selectedDate: Date;
+  public apiEndpoint: string = '/api';
 
   constructor(
     config: ICalendarConfig,

src/managers/ResizeHandleManager.ts

@@ -2,6 +2,7 @@ import { eventBus } from '../core/EventBus';
 import { CoreEvents } from '../constants/CoreEvents';
 import { Configuration } from '../configurations/CalendarConfig';
 import { IResizeEndEventPayload } from '../types/EventTypes';
+import { PositionUtils } from '../utils/PositionUtils';
 
 type SwpEventEl = HTMLElement & { updateHeight?: (h: number) => void };
 
@@ -18,7 +19,6 @@ export class ResizeHandleManager {
   private startDurationMin = 0;
   private direction: 'grow' | 'shrink' = 'grow';
 
-  private hourHeightPx: number;
   private snapMin: number;
   private minDurationMin: number;
   private animationId: number | null = null;
@@ -30,11 +30,12 @@ export class ResizeHandleManager {
   private pointerCaptured = false;
   private prevZ?: string;
   private config: Configuration;
+  private positionUtils: PositionUtils;
 
-  constructor(config: Configuration) {
+  constructor(config: Configuration, positionUtils: PositionUtils) {
     this.config = config;
+    this.positionUtils = positionUtils;
     const grid = this.config.gridSettings;
-    this.hourHeightPx = grid.hourHeight;
     this.snapMin = grid.snapInterval;
     this.minDurationMin = this.snapMin; // Use snap interval as minimum duration
   }
@@ -53,19 +54,6 @@ export class ResizeHandleManager {
     this.unsubscribers.forEach(u => u());
   }
 
-  private minutesPerPx(): number {
-    return 60 / this.hourHeightPx;
-  }
-
-  private pxFromMinutes(min: number): number {
-    return (min / 60) * this.hourHeightPx;
-  }
-
-  private roundSnap(min: number, dir: 'grow' | 'shrink'): number {
-    const q = min / this.snapMin;
-    return (dir === 'grow' ? Math.ceil(q) : Math.floor(q)) * this.snapMin;
-  }
-
   private refreshEventCache(): void {
     this.cachedEvents = Array.from(
       document.querySelectorAll<SwpEventEl>('swp-day-columns swp-event')
@@ -167,7 +155,7 @@ export class ResizeHandleManager {
     const startHeight = el.offsetHeight;
     this.startDurationMin = Math.max(
       this.minDurationMin,
-      Math.round(startHeight * this.minutesPerPx())
+      Math.round(this.positionUtils.pixelsToMinutes(startHeight))
     );
 
     this.prevZ = (el.closest<HTMLElement>('swp-event-group') ?? el).style.zIndex;
@@ -193,9 +181,9 @@ export class ResizeHandleManager {
     this.direction = dy >= 0 ? 'grow' : 'shrink';
 
     // Calculate raw height from pixel delta (no snapping - 100% smooth like drag & drop)
-    const startHeight = this.pxFromMinutes(this.startDurationMin);
+    const startHeight = this.positionUtils.minutesToPixels(this.startDurationMin);
     const rawHeight = startHeight + dy;
-    const minHeight = this.pxFromMinutes(this.minDurationMin);
+    const minHeight = this.positionUtils.minutesToPixels(this.minDurationMin);
 
     this.targetHeight = Math.max(minHeight, rawHeight); // Raw height, no snap
 
@@ -228,9 +216,9 @@ export class ResizeHandleManager {
 
     // Snap to grid on pointer up (like DragDropManager does on mouseUp)
     const currentHeight = this.targetEl.offsetHeight;
-    const snapDistancePx = this.pxFromMinutes(this.snapMin);
+    const snapDistancePx = this.positionUtils.minutesToPixels(this.snapMin);
     const snappedHeight = Math.round(currentHeight / snapDistancePx) * snapDistancePx;
-    const minHeight = this.pxFromMinutes(this.minDurationMin);
+    const minHeight = this.positionUtils.minutesToPixels(this.minDurationMin);
     const finalHeight = Math.max(minHeight, snappedHeight) - 3; // lille gap til grid-linjer
 
     this.targetEl.updateHeight?.(finalHeight);

src/repositories/ApiEventRepository.ts

@@ -17,7 +17,7 @@ export class ApiEventRepository {
   private apiEndpoint: string;
 
   constructor(config: Configuration) {
-    this.apiEndpoint = config.apiEndpoint || '/api';
+    this.apiEndpoint = config.apiEndpoint;
   }
 
   /**