import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:month_picker_dialog/month_picker_dialog.dart';

class ThemedDateField extends StatefulWidget {
  const ThemedDateField({
    super.key,
    this.hintText,
    this.txtwidth,
    this.txtheight,
    this.backgroundColor,
    this.borderColor,
    this.errorBorderColor,
    this.onDateSelected,
    this.controller,
    this.validator,
    this.lastDate, // ✅ new
    this.firstDate,
  });

  final String? hintText;
  final double? txtwidth;
  final double? txtheight;
  final Color? backgroundColor;
  final Color? borderColor;
  final Color? errorBorderColor;
  final TextEditingController? controller;
  final Function(DateTime)? onDateSelected;
  final String? Function(String? value)? validator; // ✅ new
  final DateTime? lastDate;
  final DateTime? firstDate;

  @override
  State<ThemedDateField> createState() => _ThemedDateFieldState();
}

class _ThemedDateFieldState extends State<ThemedDateField> {
  DateTime? selectedDate;

  Future<void> pickDate(
    BuildContext context,
    FormFieldState<String> field,
  ) async {
    DateTime initialDate =
        selectedDate ??
        (widget.controller?.text.isNotEmpty == true
            ? DateFormat('dd-MM-yyyy').parse(widget.controller!.text)
            : DateTime.now());
    final pickedDate = await showDatePicker(
      context: context,
      initialDate: initialDate,
      firstDate: widget.firstDate ?? DateTime(2000),
      // lastDate: DateTime(2100),
      lastDate: widget.lastDate ?? DateTime(2100),
      initialEntryMode: DatePickerEntryMode.calendarOnly,
    );

    if (pickedDate != null) {
      setState(() => selectedDate = pickedDate);

      final formattedDate = DateFormat('dd-MM-yyyy').format(pickedDate);
      widget.controller?.text = formattedDate;
      widget.onDateSelected?.call(pickedDate);

      field.didChange(formattedDate); // ✅ notify form validation
    }
  }

  @override
  @override
  Widget build(BuildContext context) {
    return FormField<String>(
      validator: widget.validator,
      initialValue: widget.controller?.text,
      builder: (field) {
        final hasError = field.hasError;

        return Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            InkWell(
              onTap: () => pickDate(context, field),

              borderRadius: BorderRadius.circular(10),
              child: Container(
                width: widget.txtwidth ?? MediaQuery.of(context).size.width,
                height: widget.txtheight,
                padding: const EdgeInsets.symmetric(
                  vertical: 8,
                  horizontal: 15,
                ),
                decoration: BoxDecoration(
                  color: widget.backgroundColor ?? Colors.white,
                  borderRadius: BorderRadius.circular(10),
                  border: Border.all(
                    color: hasError
                        ? (widget.errorBorderColor ?? Color(0xFFD83731))
                        : (widget.borderColor ?? Color(0xFFE2E8F0)),
                    width: 1,
                  ),
                ),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Expanded(
                      child: Text(
                        widget.controller?.text.isNotEmpty == true
                            ? widget.controller!.text
                            : widget.hintText ?? "Select Date",
                        style: TextStyle(
                          fontSize: 11,
                          color: hasError ? Color(0xFFD83731) : Colors.black,
                        ),
                        overflow: TextOverflow.ellipsis,
                      ),
                    ),
                    const Icon(
                      Icons.calendar_today,
                      size: 16,

                      color: Color(0xFF5A6C7D),
                    ),
                  ],
                ),
              ),
            ),

            if (hasError)
              Padding(
                padding: const EdgeInsets.only(top: 5, left: 5),
                child: Text(
                  field.errorText ?? '',
                  style: const TextStyle(
                    color: Color(0xFFD83731),
                    fontSize: 10,
                  ),
                ),
              ),
          ],
        );
      },
    );
  }
}