Added: add_edit_contact_screen.dart

lib/screens/add_edit_contact_screen.dart

@@ -0,0 +1,133 @@
+import 'package:flutter/material.dart';
+import 'package:contacts_dataist_ir/models/contact.dart';
+import 'package:contacts_dataist_ir/database/database_helper.dart';
+
+class AddEditContactScreen extends StatefulWidget {
+  final Contact? contact; // Optional: if editing an existing contact
+
+  const AddEditContactScreen({super.key, this.contact});
+
+  @override
+  State<AddEditContactScreen> createState() => _AddEditContactScreenState();
+}
+
+class _AddEditContactScreenState extends State<AddEditContactScreen> {
+  final _formKey = GlobalKey<FormState>(); // Key for form validation
+  final DatabaseHelper _dbHelper = DatabaseHelper();
+
+  late TextEditingController _nameController;
+  late TextEditingController _phoneController;
+  late TextEditingController _emailController;
+  late TextEditingController _addressController;
+  late TextEditingController _companyController;
+  late TextEditingController _notesController;
+
+  @override
+  void initState() {
+    super.initState();
+    _nameController = TextEditingController(text: widget.contact?.name ?? '');
+    _phoneController = TextEditingController(text: widget.contact?.phone ?? '');
+    _emailController = TextEditingController(text: widget.contact?.email ?? '');
+    _addressController = TextEditingController(text: widget.contact?.address ?? '');
+    _companyController = TextEditingController(text: widget.contact?.company ?? '');
+    _notesController = TextEditingController(text: widget.contact?.notes ?? '');
+  }
+
+  @override
+  void dispose() {
+    _nameController.dispose();
+    _phoneController.dispose();
+    _emailController.dispose();
+    _addressController.dispose();
+    _companyController.dispose();
+    _notesController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _saveContact() async {
+    if (_formKey.currentState!.validate()) {
+      final isEditing = widget.contact != null;
+      final Contact contact = Contact(
+        id: isEditing ? widget.contact!.id : null,
+        name: _nameController.text,
+        phone: _phoneController.text.isEmpty ? null : _phoneController.text,
+        email: _emailController.text.isEmpty ? null : _emailController.text,
+        address: _addressController.text.isEmpty ? null : _addressController.text,
+        company: _companyController.text.isEmpty ? null : _companyController.text,
+        notes: _notesController.text.isEmpty ? null : _notesController.text,
+      );
+
+      try {
+        if (isEditing) {
+          await _dbHelper.updateContact(contact);
+        } else {
+          await _dbHelper.insertContact(contact);
+        }
+        if (mounted) { // Check if the widget is still mounted before navigating
+          Navigator.pop(context, true); // Pop with 'true' indicating success
+        }
+      } catch (e) {
+        print('Error saving contact: $e');
+        // TODO: Show an error message to the user
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.contact == null ? 'Add New Contact' : 'Edit Contact'),
+        backgroundColor: Theme.of(context).colorScheme.primary,
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Form(
+          key: _formKey,
+          child: ListView(
+            children: <Widget>[
+              TextFormField(
+                controller: _nameController,
+                decoration: const InputDecoration(labelText: 'Name *'),
+                validator: (value) {
+                  if (value == null || value.isEmpty) {
+                    return 'Please enter a name';
+                  }
+                  return null;
+                },
+              ),
+              TextFormField(
+                controller: _phoneController,
+                decoration: const InputDecoration(labelText: 'Phone'),
+                keyboardType: TextInputType.phone,
+              ),
+              TextFormField(
+                controller: _emailController,
+                decoration: const InputDecoration(labelText: 'Email'),
+                keyboardType: TextInputType.emailAddress,
+              ),
+              TextFormField(
+                controller: _addressController,
+                decoration: const InputDecoration(labelText: 'Address'),
+              ),
+              TextFormField(
+                controller: _companyController,
+                decoration: const InputDecoration(labelText: 'Company'),
+              ),
+              TextFormField(
+                controller: _notesController,
+                decoration: const InputDecoration(labelText: 'Notes'),
+                maxLines: 3,
+              ),
+              const SizedBox(height: 20),
+              ElevatedButton(
+                onPressed: _saveContact,
+                child: Text(widget.contact == null ? 'Save Contact' : 'Update Contact'),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}