feat: Implement CSV address upload functionality

lib/screens/admin_dashboard_screen.dart

+import 'dart:convert';
+import 'package:csv/csv.dart';
+import 'package:file_picker/file_picker.dart';
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
@@ -46,6 +49,74 @@ class _AdminDashboardScreenState extends State<AdminDashboardScreen> {
     );
   }
 
+  Future<void> _showUploadCsvDialog() async {
+    try {
+      final result = await FilePicker.platform.pickFiles(
+        type: FileType.custom,
+        allowedExtensions: ['csv'],
+      );
+
+      if (result == null || !mounted) return;
+
+      final file = result.files.first;
+      final bytes = file.bytes;
+      if (bytes == null) return;
+
+      final content = utf8.decode(bytes);
+      final list = const CsvToListConverter().convert(content);
+
+      if (list.isNotEmpty) {
+        list.removeAt(0); // remove header
+      }
+
+      final addresses = list.map((row) {
+        try {
+          return DeliveryAddress(
+            streetAddress: row[0].toString(),
+            city: row[1].toString(),
+            state: row[2].toString(),
+            zipCode: row[3].toString(),
+            notes: row.length > 4 ? row[4].toString() : null,
+          );
+        } catch (e) {
+          print('Error parsing row: $row, error: $e');
+          return null;
+        }
+      }).where((address) => address != null).cast<DeliveryAddress>().toList();
+
+      if (!mounted) return; // Check if the widget is still in the tree
+
+      if (addresses.isNotEmpty) {
+        try {
+          await _firestoreService.saveAddressesFromCsv(addresses);
+          if (mounted) {
+            ScaffoldMessenger.of(context).showSnackBar(
+              const SnackBar(content: Text('Addresses uploaded successfully!')),
+            );
+          }
+        } catch (e) {
+          if (mounted) {
+            ScaffoldMessenger.of(context).showSnackBar(
+              SnackBar(content: Text('Error uploading addresses: $e')),
+            );
+          }
+        }
+      } else {
+        if (mounted) {
+          ScaffoldMessenger.of(context).showSnackBar(
+            const SnackBar(content: Text('No valid addresses found in the CSV file.')),
+          );
+        }
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Error picking file: $e')),
+        );
+      }
+    }
+  }
+
   void _deleteAddress(String addressId) {
     _firestoreService.deleteAddress(addressId);
   }
@@ -61,6 +132,7 @@ class _AdminDashboardScreenState extends State<AdminDashboardScreen> {
         password: _passwordController.text.trim(),
       );
     } on FirebaseAuthException catch (e) {
+      if (!mounted) return;
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text("Login Failed: ${e.message}")),
       );
@@ -139,7 +211,7 @@ class _AdminDashboardScreenState extends State<AdminDashboardScreen> {
               ),
               const SizedBox(width: 16),
               OutlinedButton.icon(
-                onPressed: null, // Disabled for now
+                onPressed: _showUploadCsvDialog,
                 icon: const Icon(Icons.upload_file),
                 label: const Text('Upload CSV'),
                 style: OutlinedButton.styleFrom(

lib/screens/profile_screen.dart

+import 'dart:typed_data';
+
 import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/material.dart';
 import 'package:cloud_firestore/cloud_firestore.dart';
 import 'package:image_picker/image_picker.dart';
 import 'package:firebase_storage/firebase_storage.dart';
-import 'dart:io';
 import '../colors.dart';
 import '../services/google_auth_service.dart';
 
@@ -26,7 +27,8 @@ class _ProfileScreenState extends State<ProfileScreen> {
   final TextEditingController _companyController = TextEditingController();
 
   String? _profileImageUrl;
-  File? _selectedImage;
+  XFile? _selectedImage;
+  Uint8List? _selectedImageBytes;
 
   // GraphGo specific stats
   int _totalRoutes = 0;
@@ -80,11 +82,13 @@ class _ProfileScreenState extends State<ProfileScreen> {
     } catch (e) {
       print('Error loading user data: $e');
     } finally {
+      if (mounted) {
         setState(() {
           _isLoading = false;
         });
       }
     }
+  }
 
   Future<void> _createUserProfile() async {
     try {
@@ -126,6 +130,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
           totalEfficiency += (routeData['efficiency'] ?? 0.0).toDouble();
         }
 
+        if (mounted) {
           setState(() {
             _totalRoutes = totalRoutes;
             _totalDeliveries = totalDeliveries;
@@ -133,6 +138,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
             _averageEfficiency = totalRoutes > 0 ? totalEfficiency / totalRoutes : 0.0;
           });
         }
+      }
     } catch (e) {
       print('Error loading user stats: $e');
     }
@@ -149,12 +155,15 @@ class _ProfileScreenState extends State<ProfileScreen> {
       );
 
       if (image != null) {
+        final bytes = await image.readAsBytes();
         setState(() {
-          _selectedImage = File(image.path);
+          _selectedImage = image;
+          _selectedImageBytes = bytes;
         });
       }
     } catch (e) {
       print('Error picking image: $e');
+      if (!mounted) return;
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('Error selecting image: $e')),
       );
@@ -162,7 +171,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
   }
 
   Future<void> _uploadProfileImage() async {
-    if (_selectedImage == null) return;
+    if (_selectedImage == null || _selectedImageBytes == null) return;
 
     try {
       setState(() {
@@ -175,26 +184,31 @@ class _ProfileScreenState extends State<ProfileScreen> {
           .child('profile_images')
           .child(fileName);
 
-      UploadTask uploadTask = storageRef.putFile(_selectedImage!);
+      UploadTask uploadTask = storageRef.putData(_selectedImageBytes!); 
       TaskSnapshot snapshot = await uploadTask;
       String downloadUrl = await snapshot.ref.getDownloadURL();
 
+      if (mounted) {
         setState(() {
           _profileImageUrl = downloadUrl;
         });
+      }
 
       print('✅ Profile image uploaded: $downloadUrl');
     } catch (e) {
       print('Error uploading profile image: $e');
+      if (!mounted) return;
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('Error uploading image: $e')),
       );
     } finally {
+      if (mounted) {
         setState(() {
           _isLoading = false;
         });
       }
     }
+  }
 
   Future<void> _saveProfile() async {
     try {
@@ -203,7 +217,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
       });
 
       // Upload profile image if selected
-      if (_selectedImage != null) {
+      if (_selectedImageBytes != null) {
         await _uploadProfileImage();
       }
 
@@ -220,6 +234,7 @@ class _ProfileScreenState extends State<ProfileScreen> {
         'updatedAt': FieldValue.serverTimestamp(),
       });
 
+      if (mounted) {
         setState(() {
           _isEditing = false;
         });
@@ -230,17 +245,21 @@ class _ProfileScreenState extends State<ProfileScreen> {
             backgroundColor: Colors.green,
           ),
         );
+      }
     } catch (e) {
       print('Error saving profile: $e');
+      if (!mounted) return;
       ScaffoldMessenger.of(context).showSnackBar(
         SnackBar(content: Text('Error saving profile: $e')),
       );
     } finally {
+      if (mounted) {
         setState(() {
           _isLoading = false;
         });
       }
     }
+  }
 
   Widget _buildStatCard(String title, String value, IconData icon, Color color) {
     return Expanded(
@@ -280,7 +299,6 @@ class _ProfileScreenState extends State<ProfileScreen> {
 
   @override
   Widget build(BuildContext context) {
-    
     if (_isLoading) {
       return Scaffold(
         appBar: AppBar(
@@ -320,7 +338,8 @@ class _ProfileScreenState extends State<ProfileScreen> {
               setState(() {
                 _isEditing = !_isEditing;
                 if (!_isEditing) {
-                  // Reset to original values
+                  _selectedImage = null;
+                  _selectedImageBytes = null;
                   _loadUserData();
                 }
               });
@@ -345,12 +364,12 @@ class _ProfileScreenState extends State<ProfileScreen> {
                       children: [
                         CircleAvatar(
                           radius: 60,
-                          backgroundImage: _selectedImage != null
-                              ? FileImage(_selectedImage!)
+                          backgroundImage: _selectedImageBytes != null
+                              ? MemoryImage(_selectedImageBytes!)
                               : (_profileImageUrl != null
                                   ? NetworkImage(_profileImageUrl!) as ImageProvider
                                   : null),
-                          child: _selectedImage == null && _profileImageUrl == null
+                          child: _selectedImageBytes == null && _profileImageUrl == null
                               ? const Icon(Icons.person, size: 60)
                               : null,
                         ),
@@ -588,7 +607,6 @@ class _ProfileScreenState extends State<ProfileScreen> {
                 Expanded(
                   child: ElevatedButton.icon(
                     onPressed: () {
-                      // Navigate to route history
                       ScaffoldMessenger.of(context).showSnackBar(
                         const SnackBar(content: Text('Route history coming soon!')),
                       );

lib/services/firestore_service.dart

@@ -16,6 +16,16 @@ class FirestoreService {
     return _db.collection(_collectionPath).doc(address.id).set(address.toJson());
   }
 
+  // Save a list of addresses from a CSV
+  Future<void> saveAddressesFromCsv(List<DeliveryAddress> addresses) async {
+    final batch = _db.batch();
+    for (final address in addresses) {
+      final docRef = _db.collection(_collectionPath).doc(address.id);
+      batch.set(docRef, address.toJson());
+    }
+    await batch.commit();
+  }
+
   // Delete an address
   Future<void> deleteAddress(String addressId) {
     return _db.collection(_collectionPath).doc(addressId).delete();

pubspec.lock

@@ -193,6 +193,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.2"
+  csv:
+    dependency: "direct main"
+    description:
+      name: csv
+      sha256: c6aa2679b2a18cb57652920f674488d89712efaf4d3fdf2e537215b35fc19d6c
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.0.0"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -233,6 +241,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.1"
+  file_picker:
+    dependency: "direct main"
+    description:
+      name: file_picker
+      sha256: "1bbf65dd997458a08b531042ec3794112a6c39c07c37ff22113d2e7e4f81d4e4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.2.1"
   file_selector_linux:
     dependency: transitive
     description:
@@ -1156,6 +1172,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.1.0"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      sha256: "66814138c3562338d05613a6e368ed8cfb237ad6d64a9e9334be3f309acfca03"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.14.0"
   xdg_directories:
     dependency: transitive
     description:

pubspec.yaml

@@ -36,6 +36,8 @@ dependencies:
   http: ^1.1.0
   uuid: ^4.2.1
   image_picker: ^1.0.4
+  file_picker: ^6.2.0
+  csv: ^6.0.0
 
 dev_dependencies:
   flutter_test: