using System;
using System.Diagnostics;
using System.IO;

namespace WebDAVSharp.Server.Stores.DiskStore {
	/// <summary>
	/// This class implements a disk-based <see cref="IWebDavStore" />.
	/// </summary>
	[DebuggerDisplay("Disk Store ({RootPath})")]
	public sealed class WebDavDiskStore : IWebDavStore {
		private readonly string _rootPath;

		/// <summary>
		/// Initializes a new instance of the <see cref="WebDavDiskStore" /> class.
		/// </summary>
		/// <param name="rootPath">The root path of a folder on disk to host in this <see cref="WebDavDiskStore" />.</param>
		/// <exception cref="System.ArgumentNullException"></exception>
		/// <exception cref="System.IO.DirectoryNotFoundException"></exception>
		/// <exception cref="ArgumentNullException"><paramref name="rootPath" /> is <c>null</c>.</exception>
		/// <exception cref="DirectoryNotFoundException"><paramref name="rootPath" /> specifies a folder that does not exist.</exception>
		public WebDavDiskStore(string rootPath) {
			if (rootPath == null)
				throw new ArgumentNullException(rootPath);
			if (!Directory.Exists(rootPath))
				throw new DirectoryNotFoundException(rootPath);

			_rootPath = rootPath;
		}

		/// <summary>
		/// Gets the root path for the folder that is hosted in this <see cref="WebDavDiskStore" />.
		/// </summary>
		/// <value>
		/// The root path.
		/// </value>
		public string RootPath {
			get {
				return _rootPath;
			}
		}

		#region IWebDAVStore Members

		/// <summary>
		/// Gets the root collection of this <see cref="IWebDavStore" />.
		/// </summary>
		public IWebDavStoreCollection Root {
			get {
				return new WebDavDiskStoreCollection(null, _rootPath);
			}
		}

		#endregion
	}
}