/*
 * MinIO .NET Library for Amazon S3 Compatible Cloud Storage, (C) 2020, 2021 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using System.Globalization;
using System.Net;
using System.Text;
using System.Xml.Linq;
using Minio.DataModel.Result;
using Minio.Helper;

namespace Minio.DataModel.Response;

internal class GetObjectsVersionsListResponse : GenericResponse
{
    internal ListVersionsResult BucketResult;
    internal Tuple<ListVersionsResult, List<Item>> ObjectsTuple;

    internal GetObjectsVersionsListResponse(HttpStatusCode statusCode, string responseContent)
        : base(statusCode, responseContent)
    {
        if (string.IsNullOrEmpty(responseContent) ||
            !HttpStatusCode.OK.Equals(statusCode))
            return;

        using var stream = new MemoryStream(Encoding.UTF8.GetBytes(responseContent).AsMemory().ToArray());
        BucketResult = Utils.DeserializeXml<ListVersionsResult>(stream);

        var root = XDocument.Parse(responseContent);
        XNamespace ns = Utils.DetermineNamespace(root);

        var items = from c in root.Root.Descendants(ns + "Version")
            select new Item
            {
                Key = c.Element(ns + "Key").Value,
                LastModified = c.Element(ns + "LastModified").Value,
                ETag = c.Element(ns + "ETag").Value,
                VersionId = c.Element(ns + "VersionId").Value,
                Size = ulong.Parse(c.Element(ns + "Size").Value,
                    CultureInfo.CurrentCulture),
                IsDir = false
            };
        var prefixes = from c in root.Root.Descendants(ns + "CommonPrefixes")
            select new Item { Key = c.Element(ns + "Prefix").Value, IsDir = true };
        items = items.Concat(prefixes);
        ObjectsTuple = Tuple.Create(BucketResult, items.ToList());
    }
}
