/*
 *
 * (c) Copyright Ascensio System Limited 2010-2020
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
 * You can contact Ascensio System SIA by email at sales@onlyoffice.com
 *
 * The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display 
 * Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
 *
 * Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains 
 * relevant author attributions when distributing the software. If the display of the logo in its graphic 
 * form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE" 
 * in every copy of the program you distribute. 
 * Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
 *
*/


using System;
using System.Collections.Generic;
using System.Linq;

using ASC.Common;
using ASC.Common.Logging;
using ASC.MessagingSystem;

using Microsoft.Extensions.Options;

namespace ASC.AuditTrail.Mappers
{
    [Singletone]
    public class AuditActionMapper
    {
        private Dictionary<MessageAction, MessageMaps> Actions { get; }
        private ILog Log { get; }

        public AuditActionMapper(IOptionsMonitor<ILog> options)
        {
            Actions = new Dictionary<MessageAction, MessageMaps>();
            Log = options.CurrentValue;

            Actions = Actions
                .Union(LoginActionsMapper.GetMaps())
                .Union(ProjectsActionsMapper.GetMaps())
                .Union(CrmActionMapper.GetMaps())
                .Union(PeopleActionMapper.GetMaps())
                .Union(DocumentsActionMapper.GetMaps())
                .Union(SettingsActionsMapper.GetMaps())
                .Union(OthersActionsMapper.GetMaps())
                .ToDictionary(x => x.Key, x => x.Value);
        }

        public string GetActionText(AuditEvent evt)
        {
            var action = (MessageAction)evt.Action;
            if (!Actions.ContainsKey(action))
            {
                Log.Error(string.Format("There is no action text for \"{0}\" type of event", action));
                return string.Empty;
            }

            try
            {
                var actionText = Actions[(MessageAction)evt.Action].GetActionText();

                if (evt.Description == null || !evt.Description.Any()) return actionText;

                var description = evt.Description
                                     .Select(t => t.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
                                     .Select(split => string.Join(", ", split.Select(ToLimitedText))).ToArray();


                return string.Format(actionText, description);
            }
            catch
            {
                //log.Error(string.Format("Error while building action text for \"{0}\" type of event", action));
                return string.Empty;
            }
        }

        public string GetActionText(LoginEvent evt)
        {
            var action = (MessageAction)evt.Action;
            if (!Actions.ContainsKey(action))
            {
                //log.Error(string.Format("There is no action text for \"{0}\" type of event", action));
                return string.Empty;
            }

            try
            {
                var actionText = Actions[(MessageAction)evt.Action].GetActionText();

                if (evt.Description == null || !evt.Description.Any()) return actionText;

                var description = evt.Description
                                     .Select(t => t.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
                                     .Select(split => string.Join(", ", split.Select(ToLimitedText))).ToArray();

                return string.Format(actionText, description);
            }
            catch
            {
                //log.Error(string.Format("Error while building action text for \"{0}\" type of event", action));
                return string.Empty;
            }
        }

        public string GetActionTypeText(AuditEvent evt)
        {
            var action = (MessageAction)evt.Action;
            return !Actions.ContainsKey(action)
                       ? string.Empty
                       : Actions[(MessageAction)evt.Action].GetActionTypeText();
        }

        public string GetProductText(AuditEvent evt)
        {
            var action = (MessageAction)evt.Action;
            return !Actions.ContainsKey(action)
                       ? string.Empty
                       : Actions[(MessageAction)evt.Action].GetProduct();
        }

        public string GetModuleText(AuditEvent evt)
        {
            var action = (MessageAction)evt.Action;
            return !Actions.ContainsKey(action)
                       ? string.Empty
                       : Actions[(MessageAction)evt.Action].GetModule();
        }

        private string ToLimitedText(string text)
        {
            if (text == null) return null;
            return text.Length < 50 ? text : string.Format("{0}...", text.Substring(0, 47));
        }
    }
}