Add: save last used region & randomise defualt region

src/app/app.component.ts

@@ -17,10 +17,6 @@ export class AppComponent implements OnInit {
   loading = true;
   error = '';
 
-  // Default values
-  selectedDate = new Date();
-  selectedRegion = 'SE3'; // Stockholm / Södra Mellansverige as default
-
   regions = [
     { value: 'SE1', label: 'Luleå / Norra Sverige' },
     { value: 'SE2', label: 'Sundsvall / Norra Mellansverige' },
@@ -28,9 +24,20 @@ export class AppComponent implements OnInit {
     { value: 'SE4', label: 'Malmö / Södra Sverige' }
   ];
 
+  // Default values
+  selectedDate = new Date();
+  // Default will be overridden by localStorage if available
+  selectedRegion = this.regions[Math.floor(Math.random() * this.regions.length)].value;
+
   private energyPriceService = inject(EnergyPriceService);
 
   ngOnInit() {
+    // Load saved region from localStorage if available
+    const savedRegion = localStorage.getItem('selectedRegion');
+    if (savedRegion) {
+      this.selectedRegion = savedRegion;
+    }
+
     this.loadPriceData();
   }
 
@@ -55,6 +62,8 @@ export class AppComponent implements OnInit {
   }
 
   onRegionChange() {
+    // Save selected region to localStorage
+    localStorage.setItem('selectedRegion', this.selectedRegion);
     this.loadPriceData();
   }