//  Copyright (C) 2015, The Duplicati Team
//  http://www.duplicati.com, info@duplicati.com
//
//  This library is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as
//  published by the Free Software Foundation; either version 2.1 of the
//  License, or (at your option) any later version.
//
//  This library is distributed in the hope that it will be useful, but
//  WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Linq;
using System.Collections.Generic;
using Duplicati.Server.Database;
using System.IO;
using Duplicati.Server.Serialization;

namespace Duplicati.Server.WebServer.RESTMethods
{
    public class ServerSettings : IRESTMethodGET, IRESTMethodPATCH, IRESTMethodDocumented
    {
        public void GET(string key, RequestInfo info)
        {
            var adv_props = from n in Program.DataConnection.GetSettings(Database.Connection.APP_SETTINGS_ID)
                select new KeyValuePair<string, string>(n.Name, n.Value);

            info.OutputOK(adv_props.ToDictionary(x => x.Key, x => x.Value));
        }

        public void PATCH(string key, RequestInfo info)
        {
            string str = info.Request.Form["data"].Value;

            if (string.IsNullOrWhiteSpace(str))
                str = new StreamReader(info.Request.Body, System.Text.Encoding.UTF8).ReadToEnd();

            if (string.IsNullOrWhiteSpace(str))
            {
                info.ReportClientError("Missing data object");
                return;
            }

            Dictionary<string, string> data = null;
            try
            {
                data = Serializer.Deserialize<Dictionary<string, string>>(new StringReader(str));
                if (data == null)
                {
                    info.ReportClientError("Data object had no entry");
                    return;
                }

                Program.DataConnection.ApplicationSettings.UpdateSettings(data, false);

                info.OutputOK();
            }
            catch (Exception ex)
            {
                if (data == null)
                    info.ReportClientError(string.Format("Unable to parse data object: {0}", ex.Message));
                else
                    info.ReportClientError(string.Format("Unable to save settings: {0}", ex.Message));
            }            
        }

        public string Description { get { return "Return a list of settings for the server"; } }

        public IEnumerable<KeyValuePair<string, Type>> Types
        {
            get
            {
                return new KeyValuePair<string, Type>[] {
                    new KeyValuePair<string, Type>(HttpServer.Method.Get, typeof(ApplicationSettings))
                };
            }
        }    
    }
}