import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import '../../core/theme.dart';

class CustomTextField extends StatefulWidget {
  final String label;
  final String? hint;
  final TextEditingController controller;
  final bool isPassword;
  final String? Function(String?)? validator;
  final String? errorText;
  final Widget? prefixIcon;
  final Widget? suffixIcon;
  final TextInputType keyboardType;
  final bool readOnly;
  final VoidCallback? onTap;
  final ValueChanged<String>? onChanged;
  final int maxLines;
  final List<TextInputFormatter>? inputFormatters;

  const CustomTextField({
    Key? key,
    required this.controller,
    required this.label,
    this.hint,
    this.isPassword = false,
    this.validator,
    this.errorText,
    this.prefixIcon,
    this.suffixIcon,
    this.keyboardType = TextInputType.text,
    this.readOnly = false,
    this.onTap,
    this.onChanged,
    this.maxLines = 1,
    this.inputFormatters,
  }) : super(key: key);

  @override
  State<CustomTextField> createState() => _CustomTextFieldState();
}

class _CustomTextFieldState extends State<CustomTextField> {
  bool _obscureText = true;
  late FocusNode _focusNode;
  bool _isFocused = false;

  @override
  void initState() {
    super.initState();
    _focusNode = FocusNode();
    _focusNode.addListener(() {
      setState(() {
        _isFocused = _focusNode.hasFocus;
      });
    });
  }

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

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          widget.label,
          style: AppTheme.labelMedium.copyWith(color: AppTheme.textSecondary),
        ),
        const SizedBox(height: AppTheme.spacingXs),
        AnimatedContainer(
          duration: const Duration(milliseconds: 200),
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(AppTheme.radiusLg),
            boxShadow: [
              if (_isFocused)
                BoxShadow(
                  color: AppTheme.primaryBlue.withValues(alpha: 0.15),
                  blurRadius: 12,
                  spreadRadius: 2,
                  offset: const Offset(0, 4),
                )
              else
                BoxShadow(
                  color: AppTheme.primaryDark.withValues(alpha: 0.03),
                  blurRadius: 6,
                  spreadRadius: 0,
                  offset: const Offset(0, 2),
                ),
            ],
          ),
          child: TextFormField(
            controller: widget.controller,
            focusNode: _focusNode,
            obscureText: widget.isPassword ? _obscureText : false,
            validator: widget.validator,
            keyboardType: widget.keyboardType,
            readOnly: widget.readOnly,
            onTap: widget.onTap,
            onChanged: widget.onChanged,
            maxLines: widget.maxLines,
            inputFormatters: widget.inputFormatters,
            style: AppTheme.bodyMedium,
            decoration: InputDecoration(
              hintText: widget.hint,
              hintStyle: AppTheme.bodyMedium.copyWith(color: AppTheme.textTertiary),
              fillColor: AppTheme.bgWhite,
              filled: true,
              contentPadding: const EdgeInsets.all(AppTheme.spacingMd),
              border: OutlineInputBorder(
                borderRadius: BorderRadius.circular(AppTheme.radiusLg),
                borderSide: BorderSide.none,
              ),
              enabledBorder: OutlineInputBorder(
                borderRadius: BorderRadius.circular(AppTheme.radiusLg),
                borderSide: BorderSide.none,
              ),
              focusedBorder: OutlineInputBorder(
                borderRadius: BorderRadius.circular(AppTheme.radiusLg),
                borderSide: const BorderSide(color: AppTheme.primaryBlue, width: 1.5),
              ),
              errorBorder: OutlineInputBorder(
                borderRadius: BorderRadius.circular(AppTheme.radiusMd),
                borderSide: const BorderSide(color: AppTheme.statusRed, width: 1.5),
              ),
              errorText: widget.errorText,
              prefixIcon: widget.prefixIcon != null
                  ? AnimatedScale(
                      scale: _isFocused ? 1.05 : 1.0,
                      duration: const Duration(milliseconds: 200),
                      child: widget.prefixIcon,
                    )
                  : null,
              suffixIcon: widget.isPassword
                  ? IconButton(
                      icon: AnimatedScale(
                        scale: _isFocused ? 1.05 : 1.0,
                        duration: const Duration(milliseconds: 200),
                        child: Icon(
                          _obscureText
                              ? Icons.visibility_off_outlined
                              : Icons.visibility_outlined,
                          color: _isFocused ? AppTheme.primaryBlue : AppTheme.textSecondary,
                        ),
                      ),
                      onPressed: () {
                        setState(() {
                          _obscureText = !_obscureText;
                        });
                      },
                    )
                  : widget.suffixIcon,
            ),
          ),
        ),
      ],
    );
  }
}