import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import '../../../../core/theme/design_tokens.dart';
import '../../../../shared/widgets/app_button.dart';

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

  @override
  State<LoginPasswordScreen> createState() => _LoginPasswordScreenState();
}

class _LoginPasswordScreenState extends State<LoginPasswordScreen> {
  final _passwordController = TextEditingController();
  bool _obscureText = true;

  @override
  void dispose() {
    _passwordController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: AppColors.background,
      body: SafeArea(
        child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 24),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Expanded(
                child: Center(
                  child: Column(
                    mainAxisSize: MainAxisSize.min,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: [
                      _buildAppIcon(),
                      const SizedBox(height: 24),
                      _buildAppTitle(),
                      const SizedBox(height: 32),
                      _buildFormContainer(),
                    ],
                  ),
                ),
              ),
              _buildFooter(),
              const SizedBox(height: 24),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildAppIcon() {
    return Container(
      width: 104,
      height: 104,
      decoration: BoxDecoration(
        color: AppColors.appIconRing,
        borderRadius: BorderRadius.circular(52),
        border: Border.all(color: AppColors.appIconBorder, width: 1),
      ),
      child: Center(
        child: ClipRRect(
          borderRadius: BorderRadius.circular(38),
          child: Image.asset(
            'assets/images/logo.png',
            width: 76,
            height: 76,
            fit: BoxFit.cover,
          ),
        ),
      ),
    );
  }

  Widget _buildAppTitle() {
    return const Text(
      'linksy',
      style: TextStyle(
        fontFamily: 'Playfair Display',
        fontSize: 34,
        fontWeight: FontWeight.w700,
        fontStyle: FontStyle.italic,
        color: AppColors.appTitle,
        letterSpacing: 0.5,
      ),
    );
  }

  Widget _buildFormContainer() {
    return SizedBox(
      width: 327,
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              const Text(
                '密码',
                style: TextStyle(
                  fontSize: 13,
                  fontWeight: FontWeight.w500,
                  color: Color(0xFF475569),
                ),
              ),
              const SizedBox(height: 6),
              TextField(
                controller: _passwordController,
                obscureText: _obscureText,
                decoration: InputDecoration(
                  hintText: '请输入密码',
                  suffixIcon: IconButton(
                    icon: Icon(
                      _obscureText ? Icons.visibility_off : Icons.visibility,
                      size: 20,
                      color: AppColors.slate400,
                    ),
                    onPressed: () {
                      setState(() {
                        _obscureText = !_obscureText;
                      });
                    },
                  ),
                ),
              ),
            ],
          ),
          const SizedBox(height: 12),
          AppButton(text: '登录', onPressed: () => context.go('/home')),
          const SizedBox(height: 12),
          AppButton(
            text: '使用验证码登录',
            isOutlined: true,
            onPressed: () => context.push('/login/code'),
          ),
        ],
      ),
    );
  }

  Widget _buildFooter() {
    return GestureDetector(
      onTap: () => context.push('/register'),
      child: const Text(
        '还没有账号？去注册',
        style: TextStyle(
          fontSize: 14,
          fontWeight: FontWeight.w500,
          color: AppColors.slate500,
        ),
      ),
    );
  }
}
