import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:supplements/screens/home_screen.dart';

import '../providers/settings_provider.dart';

// Profile setup screen
class ProfileSetupScreen extends StatefulWidget {
  const ProfileSetupScreen({super.key});

  @override
  State<ProfileSetupScreen> createState() => _ProfileSetupScreenState();
}

class _ProfileSetupScreenState extends State<ProfileSetupScreen> {
  final _formKey = GlobalKey<FormState>();
  DateTime? _dateOfBirth;
  String? _gender;

  final List<String> _genders = ['Male', 'Female', 'Other', 'Prefer not to say'];

  @override
  void initState() {
    super.initState();
    final settingsProvider = Provider.of<SettingsProvider>(context, listen: false);
    _dateOfBirth = settingsProvider.dateOfBirth;
    _gender = settingsProvider.gender;
  }

  void _saveProfile() {
    if (_formKey.currentState!.validate()) {
      _formKey.currentState!.save();
      Provider.of<SettingsProvider>(context, listen: false).setDateOfBirthAndGender(_dateOfBirth!, _gender!);
      Navigator.of(context).pushReplacement(MaterialPageRoute(builder: (context) => HomeScreen()));
    }
  }

  Future<void> _selectDate(BuildContext context) async {
    final DateTime? picked = await showDatePicker(
      context: context,
      initialDate: _dateOfBirth ?? DateTime.now(),
      firstDate: DateTime(1900),
      lastDate: DateTime.now(),
    );
    if (picked != null && picked != _dateOfBirth) {
      setState(() {
        _dateOfBirth = picked;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Set Up Your Profile'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            children: [
              Text(
                'To provide you with personalized ingredient insights, please provide your date of birth and gender.',
                style: Theme.of(context).textTheme.titleMedium,
                textAlign: TextAlign.center,
              ),
              const SizedBox(height: 24),
              TextFormField(
                decoration: const InputDecoration(
                  labelText: 'Date of Birth',
                  border: OutlineInputBorder(),
                  suffixIcon: Icon(Icons.calendar_today),
                ),
                readOnly: true,
                controller: TextEditingController(
                  text: _dateOfBirth == null
                      ? ''
                      : '${_dateOfBirth!.toLocal()}'.split(' ')[0],
                ),
                onTap: () => _selectDate(context),
                validator: (value) {
                  if (_dateOfBirth == null) {
                    return 'Please select your date of birth';
                  }
                  return null;
                },
              ),
              const SizedBox(height: 16),
              DropdownButtonFormField<String>(
                decoration: const InputDecoration(
                  labelText: 'Gender',
                  border: OutlineInputBorder(),
                ),
                value: _gender,
                items: _genders.map((String gender) {
                  return DropdownMenuItem<String>(
                    value: gender,
                    child: Text(gender),
                  );
                }).toList(),
                onChanged: (value) {
                  setState(() {
                    _gender = value;
                  });
                },
                validator: (value) {
                  if (value == null || value.isEmpty) {
                    return 'Please select your gender';
                  }
                  return null;
                },
                onSaved: (value) {
                  _gender = value;
                },
              ),
              const SizedBox(height: 24),
              ElevatedButton(
                onPressed: _saveProfile,
                child: const Text('Save and Continue'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}