wasStitchNET – Rev 13

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///////////////////////////////////////////////////////////////////////////
//  Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3      //
//  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  //
//  rights of fair usage, the disclaimer and warranty conditions.        //
///////////////////////////////////////////////////////////////////////////

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Threading.Tasks;
using wasDAVClient;
using wasDAVClient.Helpers;
using wasSharp;
using wasSharp.Linq;
using wasSharp.Web.Utilities;
using wasSharpNET.Cryptography;
using SHA1 = System.Security.Cryptography.SHA1;

namespace wasStitchNET.Repository
{
    public class Tools
    {
        /// <summary>
        ///     Lists the release files for a given release version.
        /// </summary>
        /// <param name="server">the Stitch server to use</param>
        /// <param name="release">the release to list files for</param>
        /// <param name="timeout">the timeout connecting to the Stitch repository</param>
        /// <returns>a list of Corrade files contained in the repository</returns>
        public static async Task<IEnumerable<string>> GetReleaseFiles(string server, Version release, int timeout)
        {
            try
            {
                using (var client = new Client(new NetworkCredential())
                {
                    Timeout = timeout,
                    UserAgent = STITCH_CONSTANTS.USER_AGENT.Product.Name,
                    UserAgentVersion = STITCH_CONSTANTS.USER_AGENT.Product.Version,
                    Server = server,
                    BasePath = string.Join(@"/", STITCH_CONSTANTS.UPDATE_PATH,
                        STITCH_CONSTANTS.PROGRESSIVE_PATH)
                })
                {
                    return (await client
                            .List(
                                string.Join(
                                    Constants.DIRECTORY_SEPARATOR,
                                    $"{release.Major}.{release.Minor}",
                                    STITCH_CONSTANTS.UPDATE_DATA_PATH),
                                Constants.DavDepth.ALL)
                        )
                        .Select(o => string.Join(Constants.DIRECTORY_SEPARATOR,
                                o.Href.PathSplit(Constants.DIRECTORY_SEPARATOR.First())
                                    .Select(part =>
                                        part.Trim(Constants.DIRECTORY_SEPARATOR.First()).URLUnescapeDataString()
                                    )
                                    .Where(part => !string.IsNullOrEmpty(part))
                                    .SequenceExceptAny(new[]
                                    {
                                        STITCH_CONSTANTS.UPDATE_PATH,
                                        STITCH_CONSTANTS.PROGRESSIVE_PATH,
                                        $"{release.Major}.{release.Minor}",
                                        STITCH_CONSTANTS.UPDATE_DATA_PATH
                                    })
                            )
                        );
                }
            }
            catch (wasDAVConflictException ex)
            {
                throw new StitchException(ex);
            }
        }

        /// <summary>
        ///     Lists the release files for a given release version.
        /// </summary>
        /// <param name="server">the Stitch server to use</param>
        /// <param name="release">the release to list files for</param>
        /// <param name="timeout">the timeout connecting to the Stitch repository</param>
        /// <returns>a list of Corrade files contained in the repository</returns>
        public static IEnumerable<KeyValuePair<string, string>> GetReleaseFileHashes(string server, Version release,
            int timeout)
        {
            try
            {
                using (var client = new Client(new NetworkCredential())
                {
                    Timeout = timeout,
                    UserAgent = STITCH_CONSTANTS.USER_AGENT.Product.Name,
                    UserAgentVersion = STITCH_CONSTANTS.USER_AGENT.Product.Version,
                    Server = server,
                    BasePath = string.Join(@"/", STITCH_CONSTANTS.UPDATE_PATH,
                        STITCH_CONSTANTS.PROGRESSIVE_PATH)
                })
                {
                    return client
                        .List(
                            string.Join(
                                Constants.DIRECTORY_SEPARATOR,
                                $"{release.Major}.{release.Minor}",
                                STITCH_CONSTANTS.UPDATE_DATA_PATH),
                            Constants.DavDepth.ALL)
                        .Result
                        .AsParallel()
                        .Where(item => !item.IsCollection)
                        .ToDictionary(o => string.Join(Constants.DIRECTORY_SEPARATOR,
                                o.Href.PathSplit(Constants.DIRECTORY_SEPARATOR.First())
                                    .Select(part => part.Trim(Constants.DIRECTORY_SEPARATOR.First())
                                        .URLUnescapeDataString()
                                    )
                                    .Where(part => !string.IsNullOrEmpty(part))
                                    .SequenceExceptAny(new[]
                                    {
                                        STITCH_CONSTANTS.UPDATE_PATH,
                                        STITCH_CONSTANTS.PROGRESSIVE_PATH,
                                        $"{release.Major}.{release.Minor}",
                                        STITCH_CONSTANTS.UPDATE_DATA_PATH
                                    })),
                            o => SHA1.Create().ToHex(client.Download(o.Href).Result));
                }
            }
            catch (wasDAVException ex)
            {
                throw new StitchException(ex);
            }
        }
    }
}

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