using System;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;

namespace Microsoft.Win32.TaskScheduler
{
	/// <summary>
	/// Dialog allowing the viewing of a task event.
	/// </summary>
	[ToolboxItem(true), ToolboxItemFilter("System.Windows.Forms.Control.TopLevel"), Description("Dialog allowing the viewing of a task event.")]
	[Designer("System.ComponentModel.Design.ComponentDesigner, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
	[DesignTimeVisible(true)]
	[System.Drawing.ToolboxBitmap(typeof(TaskEditDialog), "TaskDialog")]
	public partial class EventViewerDialog :
#if DEBUG
		Form
#else
		DialogBase
#endif
	{
		private TaskEvent curEvent;
		private TaskEventEnumerator eventEnum;

		/// <summary>
		/// Initializes a new instance of the <see cref="EventViewerDialog"/> class.
		/// </summary>
		/// <param name="taskEvent">The <see cref="TaskEvent"/> to show initially.</param>
		/// <param name="log">The <see cref="TaskEventLog"/> for the task.</param>
		public EventViewerDialog(TaskEvent taskEvent = null, TaskEventLog log = null)
		{
			InitializeComponent();
			if (taskEvent != null)
				Initialize(taskEvent, log);
		}

		/// <summary>
		/// Initializes the dialog with the specified task event.
		/// </summary>
		/// <param name="taskEvent">The <see cref="TaskEvent"/> to show initially.</param>
		/// <param name="log">The <see cref="TaskEventLog"/> for the task.</param>
		public void Initialize(TaskEvent taskEvent, TaskEventLog log = null)
		{
			if (taskEvent == null)
				throw new ArgumentNullException("taskEvent");

			if (log != null)
			{
				eventEnum = log.GetEnumerator() as TaskEventEnumerator;
				eventEnum.Seek(CurrentEvent.EventRecord.Bookmark);
			}
			else
			{
				eventEnum = null;
			}
			CurrentEvent = taskEvent;
		}

		private TaskEvent CurrentEvent
		{
			get { return curEvent; }
			set
			{
				curEvent = value;
				this.Text = string.Format(EditorProperties.Resources.EventPropertiesDialogTitle, curEvent.EventId);
				eventViewerControl1.TaskEvent = curEvent;
				SetButtonState();
			}
		}

		private void SetButtonState()
		{
			if (eventEnum == null)
			{
				prevBtn.Enabled = nextBtn.Enabled = false;
				prevBtn.Visible = nextBtn.Visible = false;
			}
			else
			{
				eventEnum.Seek(CurrentEvent.EventRecord.Bookmark, -1L);
				prevBtn.Enabled = eventEnum.MoveNext();
				eventEnum.Seek(CurrentEvent.EventRecord.Bookmark, 1L);
				nextBtn.Enabled = eventEnum.MoveNext();
				prevBtn.Visible = nextBtn.Visible = true;
			}
		}

		private void copyBtn_Click(object sender, EventArgs e)
		{
			StringBuilder sb = new StringBuilder();
			sb.AppendFormat("Log Name:      {0}\r\n", curEvent.EventRecord.LogName);
			sb.AppendFormat("Source:        {0}\r\n", "TaskScheduler");
			sb.AppendFormat("Date:          {0:U}\r\n", curEvent.EventRecord.TimeCreated);
			sb.AppendFormat("Event ID:      {0}\r\n", curEvent.EventRecord.Id);
			sb.AppendFormat("Task Category: {0}\r\n", curEvent.EventRecord.TaskDisplayName);
			sb.AppendFormat("Level:         {0}\r\n", curEvent.EventRecord.LevelDisplayName);
			sb.AppendFormat("Keywords:      {0}\r\n", curEvent.EventRecord.Keywords);
			sb.AppendFormat("User:          {0}\r\n", curEvent.UserId.Translate(typeof(System.Security.Principal.NTAccount)).Value);
			sb.AppendFormat("Computer:      {0}\r\n", curEvent.EventRecord.MachineName);
			sb.AppendFormat("Description:\r\n{0}\r\n", curEvent.EventRecord.FormatDescription());
			sb.Append("Event Xml:\r\n");
			sb.Append(curEvent.EventRecord.ToXml());
			Clipboard.SetText(sb.ToString(), TextDataFormat.Text);
		}

		private void closeBtn_Click(object sender, EventArgs e)
		{
			Close();
		}

		private void prevBtn_Click(object sender, EventArgs e)
		{

		}

		private void nextBtn_Click(object sender, EventArgs e)
		{

		}
	}
}