import 'package:flutter/material.dart';

/// 对话框模式
enum DialogMode { text, input }

class CustomAlertDialog extends StatefulWidget {
  final String title;
  final String content; // 文字模式下显示
  final String hintText; // 输入模式下提示
  final String cancelText;
  final String confirmText;
  final VoidCallback? onCancel;
  final VoidCallback? onConfirm; // 文字模式回调
  final ValueChanged<String>? onInputConfirm; // 输入模式回调
  final DialogMode mode; // 新增：对话框模式

  const CustomAlertDialog({
    Key? key,
    required this.title,
    this.content = '',
    this.hintText = '',
    this.cancelText = '取消',
    this.confirmText = '确定',
    this.onCancel,
    this.onConfirm,
    this.onInputConfirm,
    this.mode = DialogMode.text, // 默认文字模式
  }) : super(key: key);

  @override
  _CustomAlertDialogState createState() => _CustomAlertDialogState();
}

class _CustomAlertDialogState extends State<CustomAlertDialog> {
  late TextEditingController _controller;

  @override
  void initState() {
    super.initState();
    // 输入模式下初始化 TextField
    _controller = TextEditingController();
  }

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

  bool get hasCancel => widget.cancelText.trim().isNotEmpty;

  @override
  Widget build(BuildContext context) {
    return Dialog(
      backgroundColor: Colors.transparent,
      child: Container(
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(5),
        ),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            const SizedBox(height: 20),
            Text(
              widget.title,
              style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
              textAlign: TextAlign.center,
            ),
            const SizedBox(height: 20),

            // ★ 根据 mode 决定展示文字还是输入框 ★
            if (widget.mode == DialogMode.text)
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 30),
                child: Text(
                  widget.content,
                  style: const TextStyle(fontSize: 16, color: Colors.black45),
                  textAlign: TextAlign.center,
                ),
              )
            else
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 20),
                child: TextField(
                  controller: _controller,

                  decoration: InputDecoration(
                    hintText: widget.hintText,
                    border: const OutlineInputBorder(),
                    focusedBorder: OutlineInputBorder(
                      borderSide: BorderSide(color: Colors.blue, width: 1),
                      borderRadius: BorderRadius.circular(4),
                    ),
                    isDense: true,
                    contentPadding: const EdgeInsets.symmetric(
                      vertical: 10,
                      horizontal: 10,
                    ),
                  ),
                ),
              ),

            const SizedBox(height: 20),
            const Divider(height: 1),

            hasCancel
                ? _buildDoubleButtons(context)
                : _buildSingleButton(context),
          ],
        ),
      ),
    );
  }

  Widget _buildDoubleButtons(BuildContext context) {
    return Row(
      children: [
        // 取消
        Expanded(
          child: InkWell(
            onTap: () {
              Navigator.of(context).pop();
              widget.onCancel?.call();
            },
            child: Container(
              padding: const EdgeInsets.symmetric(vertical: 12),
              alignment: Alignment.center,
              child: Text(
                widget.cancelText,
                style: const TextStyle(
                  fontWeight: FontWeight.w500,
                  color: Colors.black,
                  fontSize: 18,
                ),
              ),
            ),
          ),
        ),

        Container(width: 1, height: 48, color: Colors.grey[300]),

        // 确定
        Expanded(
          child: InkWell(
            onTap: () {
              Navigator.of(context).pop();
              if (widget.mode == DialogMode.text) {
                widget.onConfirm?.call();
              } else {
                widget.onInputConfirm?.call(_controller.text.trim());
              }
            },
            child: Container(
              padding: const EdgeInsets.symmetric(vertical: 12),
              alignment: Alignment.center,
              child: Text(
                widget.confirmText,
                style: const TextStyle(
                  color: Color(0xFF3874F6),
                  fontWeight: FontWeight.w500,
                  fontSize: 18,
                ),
              ),
            ),
          ),
        ),
      ],
    );
  }

  Widget _buildSingleButton(BuildContext context) {
    return InkWell(
      onTap: () {
        Navigator.of(context).pop();
        if (widget.mode == DialogMode.text) {
          widget.onConfirm?.call();
        } else {
          widget.onInputConfirm?.call(_controller.text.trim());
        }
      },
      child: Container(
        width: double.infinity,
        padding: const EdgeInsets.symmetric(vertical: 14),
        alignment: Alignment.center,
        child: Text(
          widget.confirmText,
          style: const TextStyle(
            color: Color(0xFF3874F6),
            fontWeight: FontWeight.w500,
            fontSize: 18,
          ),
        ),
      ),
    );
  }
}