#region License and Terms

// /***************************************************************************
// Copyright (c) 2015 Conplement AG
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.
//  
// ***************************************************************************/

#endregion

using System;
using System.Text;
using System.Web;
using System.Web.Http.Description;

namespace TFSWebService.Website.Areas.HelpPage
{
    public static class ApiDescriptionExtensions
    {
        /// <summary>
        ///     Generates an URI-friendly ID for the <see cref="ApiDescription" />. E.g. "Get-Values-id_name" instead of
        ///     "GetValues/{id}?name={name}"
        /// </summary>
        /// <param name="description">The <see cref="ApiDescription" />.</param>
        /// <returns>The ID as a string.</returns>
        public static string GetFriendlyId(this ApiDescription description)
        {
            string path = description.RelativePath;
            string[] urlParts = path.Split('?');
            string localPath = urlParts[0];
            string queryKeyString = null;
            if (urlParts.Length > 1)
            {
                string query = urlParts[1];
                string[] queryKeys = HttpUtility.ParseQueryString(query).AllKeys;
                queryKeyString = String.Join("_", queryKeys);
            }

            StringBuilder friendlyPath = new StringBuilder();
            friendlyPath.AppendFormat("{0}-{1}",
                description.HttpMethod.Method,
                localPath.Replace("/", "-").Replace("{", String.Empty).Replace("}", String.Empty));
            if (queryKeyString != null)
            {
                friendlyPath.AppendFormat("_{0}", queryKeyString);
            }
            return friendlyPath.ToString();
        }
    }
}