// (c) Copyright Ascensio System SIA 2010-2022
//
// This program is a free software product.
// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
// Foundation. In accordance with Section 7(a) of the GNU AGPL 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 details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
//
// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
//
// The  interactive user interfaces in modified source and object code versions of the Program must
// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
//
// Pursuant to Section 7(b) of the License you must retain the original Product logo when
// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
// trademark law for use of our trademarks.
//
// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode

using Constants = ASC.Core.Configuration.Constants;

namespace ASC.Web.Studio.Core.Notify
{
    [Singletone(Additional = typeof(ServiceLauncherExtension))]
    public class StudioNotifyServiceSender
    {
        private static string EMailSenderName { get { return Constants.NotifyEMailSenderSysName; } }

        private IServiceProvider ServiceProvider { get; }
        private IConfiguration Configuration { get; }

        public StudioNotifyServiceSender(IServiceProvider serviceProvider, IConfiguration configuration, ICacheNotify<NotifyItem> cache)
        {
            cache.Subscribe(this.OnMessage, Common.Caching.CacheNotifyAction.Any);
            ServiceProvider = serviceProvider;
            Configuration = configuration;
        }

        public void OnMessage(NotifyItem item)
        {
            using var scope = ServiceProvider.CreateScope();
            var commonLinkUtilitySettings = scope.ServiceProvider.GetService<CommonLinkUtilitySettings>();
            commonLinkUtilitySettings.ServerUri = item.BaseUrl;
            var scopeClass = scope.ServiceProvider.GetService<StudioNotifyServiceSenderScope>();
            var (tenantManager, userManager, securityContext, studioNotifyHelper, _, _) = scopeClass;
            tenantManager.SetCurrentTenant(item.TenantId);
            CultureInfo culture = null;

            var client = WorkContext.NotifyContext.NotifyService.RegisterClient(studioNotifyHelper.NotifySource, scope);

            var tenant = tenantManager.GetCurrentTenant(false);

            if (tenant != null)
            {
                culture = tenant.GetCulture();
            }

            if (Guid.TryParse(item.UserId, out var userId) && !userId.Equals(Constants.Guest.ID) && !userId.Equals(Guid.Empty))
            {
                securityContext.AuthenticateMeWithoutCookie(Guid.Parse(item.UserId));
                var user = userManager.GetUsers(userId);
                if (!string.IsNullOrEmpty(user.CultureName))
                {
                    culture = CultureInfo.GetCultureInfo(user.CultureName);
                }
            }

            if (culture != null && !Equals(Thread.CurrentThread.CurrentCulture, culture))
            {
                Thread.CurrentThread.CurrentCulture = culture;
            }
            if (culture != null && !Equals(Thread.CurrentThread.CurrentUICulture, culture))
            {
                Thread.CurrentThread.CurrentUICulture = culture;
            }

            client.SendNoticeToAsync(
                (NotifyAction)item.Action,
                item.ObjectId,
                item.Recipients?.Select(r => r.IsGroup ? new RecipientsGroup(r.Id, r.Name) : (IRecipient)new DirectRecipient(r.Id, r.Name, r.Addresses.ToArray(), r.CheckActivation)).ToArray(),
                item.SenderNames.Count > 0 ? item.SenderNames.ToArray() : null,
                item.CheckSubsciption,
                item.Tags.Select(r => new TagValue(r.Tag_, r.Value)).ToArray());
        }

        public void RegisterSendMethod()
        {
            var cron = Configuration["core:notify:cron"] ?? "0 0 5 ? * *"; // 5am every day

            using var scope = ServiceProvider.CreateScope();
            var scopeClass = scope.ServiceProvider.GetService<StudioNotifyServiceSenderScope>();
            var (_, _, _, _, tenantExtra, coreBaseSettings) = scopeClass;
            if (Configuration["core:notify:tariff"] != "false")
            {
                if (tenantExtra.Enterprise)
                {
                    WorkContext.RegisterSendMethod(SendEnterpriseTariffLetters, cron);
                }
                else if (tenantExtra.Opensource)
                {
                    WorkContext.RegisterSendMethod(SendOpensourceTariffLetters, cron);
                }
                else if (tenantExtra.Saas)
                {
                    if (coreBaseSettings.Personal)
                    {
                        if (!coreBaseSettings.CustomMode)
                        {
                            WorkContext.RegisterSendMethod(SendLettersPersonal, cron);
                        }
                    }
                    else
                    {
                        WorkContext.RegisterSendMethod(SendSaasTariffLetters, cron);
                    }
                }
            }

            if (!coreBaseSettings.Personal)
            {
                WorkContext.RegisterSendMethod(SendMsgWhatsNew, "0 0 * ? * *"); // every hour
            }
        }

        public void SendSaasTariffLetters(DateTime scheduleDate)
        {
            //remove client
            using var scope = ServiceProvider.CreateScope();
            scope.ServiceProvider.GetService<StudioPeriodicNotify>().SendSaasLettersAsync(EMailSenderName, scheduleDate).Wait();
        }

        public void SendEnterpriseTariffLetters(DateTime scheduleDate)
        {
            using var scope = ServiceProvider.CreateScope();
            scope.ServiceProvider.GetService<StudioPeriodicNotify>().SendEnterpriseLetters(EMailSenderName, scheduleDate);
        }

        public void SendOpensourceTariffLetters(DateTime scheduleDate)
        {
            using var scope = ServiceProvider.CreateScope();
            scope.ServiceProvider.GetService<StudioPeriodicNotify>().SendOpensourceLetters(EMailSenderName, scheduleDate);
        }

        public void SendLettersPersonal(DateTime scheduleDate)
        {
            using var scope = ServiceProvider.CreateScope();
            scope.ServiceProvider.GetService<StudioPeriodicNotify>().SendPersonalLetters(EMailSenderName, scheduleDate);
        }

        public void SendMsgWhatsNew(DateTime scheduleDate)
        {
            using var scope = ServiceProvider.CreateScope();
            scope.ServiceProvider.GetService<StudioWhatsNewNotify>().SendMsgWhatsNew(scheduleDate);
        }
    }

    [Scope]
    public class StudioNotifyServiceSenderScope
    {
        private TenantManager TenantManager { get; }
        private UserManager UserManager { get; }
        private SecurityContext SecurityContext { get; }
        private StudioNotifyHelper StudioNotifyHelper { get; }
        private TenantExtra TenantExtra { get; }
        private CoreBaseSettings CoreBaseSettings { get; }

        public StudioNotifyServiceSenderScope(TenantManager tenantManager,
            UserManager userManager,
            SecurityContext securityContext,
            StudioNotifyHelper studioNotifyHelper,
            TenantExtra tenantExtra,
            CoreBaseSettings coreBaseSettings)
        {
            TenantManager = tenantManager;
            UserManager = userManager;
            SecurityContext = securityContext;
            StudioNotifyHelper = studioNotifyHelper;
            TenantExtra = tenantExtra;
            CoreBaseSettings = coreBaseSettings;
        }

        public void Deconstruct(out TenantManager tenantManager,
            out UserManager userManager,
            out SecurityContext securityContext,
            out StudioNotifyHelper studioNotifyHelper,
            out TenantExtra tenantExtra,
            out CoreBaseSettings coreBaseSettings)
        {
            tenantManager = TenantManager;
            userManager = UserManager;
            securityContext = SecurityContext;
            studioNotifyHelper = StudioNotifyHelper;
            tenantExtra = TenantExtra;
            coreBaseSettings = CoreBaseSettings;
        }
    }

    public static class ServiceLauncherExtension
    {
        public static void Register(DIHelper services)
        {
            services.TryAdd<StudioNotifyServiceSenderScope>();
            services.TryAdd<StudioPeriodicNotify>();
            services.TryAdd<StudioWhatsNewNotify>();
        }
    }
}