import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:telemednet/route_names.dart';
import 'package:image_picker/image_picker.dart';
import 'dart:io';

class PatientRegistrationScreen extends StatefulWidget {
  const PatientRegistrationScreen({super.key});

  @override
  State<PatientRegistrationScreen> createState() =>
      _PatientRegistrationScreenState();
}

class _PatientRegistrationScreenState extends State<PatientRegistrationScreen> {
  final TextEditingController _nameController = TextEditingController();
  final TextEditingController _phoneController = TextEditingController();
  String? _gender;
  DateTime? _dateOfBirth;
  File? _image;
  final ImagePicker _picker = ImagePicker();

  Future<void> _getImage(ImageSource source) async {
    final XFile? pickedFile = await _picker.pickImage(source: source);

    if (pickedFile != null) {
      setState(() {
        _image = File(pickedFile.path);
      });
    }
  }

  void _showImageSourceActionSheet(BuildContext context) {
    showModalBottomSheet(
      context: context,
      builder: (BuildContext context) {
        return SafeArea(
          child: Wrap(
            children: <Widget>[
              ListTile(
                leading: const Icon(Icons.photo_library),
                title: const Text('Choose from Gallery'),
                onTap: () {
                  _getImage(ImageSource.gallery);
                  Navigator.pop(context);
                },
              ),
              ListTile(
                leading: const Icon(Icons.photo_camera),
                title: const Text('Take a Photo'),
                onTap: () {
                  _getImage(ImageSource.camera);
                  Navigator.pop(context);
                },
              ),
            ],
          ),
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Profile'),
        actions: [
          IconButton(
            icon: const Icon(Icons.check, color: Colors.blue),
            onPressed: () {
              // Save profile logic here
            },
          ),
        ],
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Center(
              child: Column(
                children: [
                  GestureDetector(
                    onTap: () => _showImageSourceActionSheet(context),
                    child: CircleAvatar(
                      radius: 50,
                      backgroundImage:
                          _image != null ? FileImage(_image!) : null,
                      child: _image == null
                          ? const Icon(Icons.person, size: 50)
                          : null,
                    ),
                  ),
                  TextButton(
                    onPressed: () => _showImageSourceActionSheet(context),
                    child: const Text('Upload picture',
                        style: TextStyle(color: Colors.blue)),
                  ),
                ],
              ),
            ),
            const SizedBox(height: 20),
            _buildTextField('Name', _nameController),
            _buildTextField('Phone number', _phoneController),
            _buildDropdownField('Gender', _gender, ['Male', 'Female', 'Other'],
                (value) {
              setState(() => _gender = value);
            }),
            _buildDateField('Date of Birth', _dateOfBirth),
            _buildNavigationField('Address'),
            _buildNavigationField('Family members'),
          ],
        ),
      ),
    );
  }

  Widget _buildTextField(String label, TextEditingController controller) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(label,
            style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
        TextField(
          controller: controller,
          decoration: const InputDecoration(
            border: UnderlineInputBorder(),
          ),
        ),
        const SizedBox(height: 20),
      ],
    );
  }

  Widget _buildDropdownField(String label, String? value, List<String> items,
      Function(String?) onChanged) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(label,
            style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
        DropdownButton<String>(
          value: value,
          isExpanded: true,
          hint: Text('Select $label'),
          onChanged: onChanged,
          items: items.map<DropdownMenuItem<String>>((String value) {
            return DropdownMenuItem<String>(
              value: value,
              child: Text(value),
            );
          }).toList(),
        ),
        const SizedBox(height: 20),
      ],
    );
  }

  Widget _buildDateField(String label, DateTime? date) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(label,
            style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Text(date != null
                ? DateFormat('dd/MM/yyyy').format(date)
                : 'Select date'),
            IconButton(
              icon: const Icon(Icons.calendar_today, color: Colors.blue),
              onPressed: () async {
                final DateTime? picked = await showDatePicker(
                  context: context,
                  initialDate: date ?? DateTime.now(),
                  firstDate: DateTime(1900),
                  lastDate: DateTime.now(),
                );
                if (picked != null && picked != date) {
                  setState(() {
                    _dateOfBirth = picked;
                  });
                }
              },
            ),
          ],
        ),
        const Divider(),
        const SizedBox(height: 20),
      ],
    );
  }

  Widget _buildNavigationField(String label) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Text(label,
                style:
                    const TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
            IconButton(
              icon: const Icon(Icons.chevron_right, color: Colors.blue),
              onPressed: () {
                if (label == 'Address') {
                  Navigator.of(context)
                      .pushNamed(RouteNames.patientAdressScreen);
                } else {
                  Navigator.of(context)
                      .pushNamed(RouteNames.patientFamilyMembersScreen);
                }
              },
            ),
          ],
        ),
        const Divider(),
        const SizedBox(height: 20),
      ],
    );
  }
}