using System;
using System.Drawing;
using System.Windows.Forms;

namespace TemuKJD.UserComponent;

public class InputDialog : Form
{
	private TextBox txtInput;
	private Button btnOk;
	private Button btnCancel;

	/// <summary>用户输入的内容（点确定后有效）</summary>
	public string InputText { get; private set; } = string.Empty;

	public InputDialog(string prompt, string title = "输入", string defaultValue = "")
	{
		// 窗体基本设置
		this.Text = title;
		this.FormBorderStyle = FormBorderStyle.FixedDialog;
		this.StartPosition = FormStartPosition.CenterParent;
		this.MaximizeBox = false;
		this.MinimizeBox = false;
		this.ClientSize = new Size(360, 130);

		// 提示标签
		var lblPrompt = new Label
		{
			Text = prompt,
			Location = new Point(15, 15),
			AutoSize = true,
			MaximumSize = new Size(330, 0)
		};

		// 输入框
		txtInput = new TextBox
		{
			Text = defaultValue,
			Location = new Point(15, 45),
			Width = 330
		};
		txtInput.SelectAll();

		// 确定按钮
		btnOk = new Button
		{
			Text = "确定",
			DialogResult = DialogResult.OK,
			Location = new Point(185, 85),
			Width = 75
		};
		btnOk.Click += (s, e) =>
		{
			InputText = txtInput.Text;
			this.DialogResult = DialogResult.OK;
			this.Close();
		};

		// 取消按钮
		btnCancel = new Button
		{
			Text = "取消",
			DialogResult = DialogResult.Cancel,
			Location = new Point(270, 85),
			Width = 75
		};

		this.Controls.AddRange(new Control[] { lblPrompt, txtInput, btnOk, btnCancel });
		this.AcceptButton = btnOk;
		this.CancelButton = btnCancel;
	}

	/// <summary>便捷静态方法：弹出输入框并返回输入内容，取消返回 null</summary>
	public static string Show(string prompt, string title = "输入", string defaultValue = "")
	{
		using (var dlg = new InputDialog(prompt, title, defaultValue))
		{
			return dlg.ShowDialog() == DialogResult.OK ? dlg.InputText : null;
		}
	}
}