import 'package:flutter/material.dart';
import 'package:kent_logistics_app/screens/welcome_screen.dart';
import 'package:provider/provider.dart';
import '../providers/auth_provider.dart';
import '../widgets/rounded_input.dart';
import '../widgets/primary_button.dart';
import 'main_bottom_nav.dart';

class LoginScreen extends StatefulWidget {
  const LoginScreen({super.key});
  @override
  State<LoginScreen> createState() => _LoginScreenState();
}

class _LoginScreenState extends State<LoginScreen> {
  final cLoginId = TextEditingController();
  final cPassword = TextEditingController();

  @override
  void dispose() {
    cLoginId.dispose();
    cPassword.dispose();
    super.dispose();
  }

  Future<void> _login() async {
    final auth = Provider.of<AuthProvider>(context, listen: false);

    final loginId = cLoginId.text.trim();
    final password = cPassword.text.trim();

    if (loginId.isEmpty || password.isEmpty) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Please enter login id and password')),
      );
      return;
    }

    final res = await auth.login(context, loginId, password);

    if (res['success'] == true) {
      if (!mounted) return;
      Navigator.of(context).pushReplacement(
        MaterialPageRoute(builder: (_) => const MainBottomNav()),
      );
    } else {
      final msg = res['message']?.toString() ?? 'Login failed';
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(msg)));
    }
  }

  @override
  Widget build(BuildContext context) {
    final auth = Provider.of<AuthProvider>(context);
    final width = MediaQuery.of(context).size.width;

    return Scaffold(
      appBar: AppBar(
        leading: IconButton(
          icon: const Icon(Icons.arrow_back),
          onPressed: () {
            Navigator.pushReplacement(
              context,
              MaterialPageRoute(builder: (_) => const WelcomeScreen()),
            );
          },
        ),
        title: const Text('Login'),
      ),

      body: Padding(
        padding: EdgeInsets.symmetric(horizontal: width * 0.06, vertical: 20),
        child: Column(
          children: [
            RoundedInput(
              controller: cLoginId,
              hint: 'Email / Mobile / Customer ID',
            ),
            const SizedBox(height: 12),
            RoundedInput(
              controller: cPassword,
              hint: 'Password',
              obscure: true,
            ),
            const SizedBox(height: 18),
            PrimaryButton(label: 'Login', onTap: _login, busy: auth.loading),
          ],
        ),
      ),
    );
  }
}