feat: Add currency selection and conversion support in PDF generation, enhance expense processing with target currency handling

pages/dashboard/expenses.vue

@@ -291,6 +291,36 @@
       v-model="showCreateModal"
       @created="handleExpenseCreated"
     />
+    
+    <!-- PDF Generation Loading Overlay -->
+    <v-overlay
+      :model-value="generatingPDF"
+      persistent
+      class="align-center justify-center"
+    >
+      <v-card
+        color="surface"
+        class="pa-8"
+        width="400"
+      >
+        <div class="text-center">
+          <v-progress-circular
+            :size="70"
+            :width="7"
+            color="primary"
+            indeterminate
+          />
+          
+          <h3 class="text-h6 mt-4 mb-2">Generating PDF...</h3>
+          <p class="text-body-2 text-grey-darken-1">
+            Your expense report is being generated with receipt images
+          </p>
+          <p class="text-caption text-grey-darken-1 mt-2">
+            This may take a moment for large reports
+          </p>
+        </div>
+      </v-card>
+    </v-overlay>
   </div>
 </template>
 
@@ -324,6 +354,7 @@ const showDetailsModal = ref(false);
 const showCreateModal = ref(false);
 const selectedExpense = ref<Expense | null>(null);
 const activeTab = ref<string>('');
+const generatingPDF = ref(false);
 
 // Filters
 const filters = ref({
@@ -494,6 +525,9 @@ const exportCSV = async () => {
 };
 
 const generatePDF = async (options: any) => {
+  generatingPDF.value = true;
+  showPDFModal.value = false; // Close the modal immediately
+  
   try {
     console.log('[expenses] Generating PDF with options:', options);
     
@@ -536,11 +570,11 @@ const generatePDF = async (options: any) => {
       console.log('[expenses] PDF downloaded successfully:', response.data.filename);
     }
     
-    showPDFModal.value = false;
-    
   } catch (err: any) {
     console.error('[expenses] Error generating PDF:', err);
     error.value = err.message || 'Failed to generate PDF';
+  } finally {
+    generatingPDF.value = false;
   }
 };