/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
 *
 * 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.Globalization;
using System.Linq;
using System.Threading;
using System.Web;

using ASC.Common.Logging;
using ASC.Core;
using ASC.Core.Tenants;
using ASC.Core.Users;
using ASC.Notify.Model;
using ASC.Notify.Patterns;
using ASC.Notify.Recipients;
using ASC.Security.Cryptography;
using ASC.Web.Core.Notify;
using ASC.Web.Core.PublicResources;
using ASC.Web.Core.Users;
using ASC.Web.Core.WhiteLabel;
using ASC.Web.Studio.Utility;

namespace ASC.Web.Studio.Core.Notify
{
    public class StudioNotifyService
    {
        private readonly StudioNotifyServiceHelper client;

        private static string EMailSenderName { get { return ASC.Core.Configuration.Constants.NotifyEMailSenderSysName; } }

        public StudioNotifyService()
        {
            client = new StudioNotifyServiceHelper();
        }

        public void SendMsgToAdminAboutProfileUpdated(int tenantId)
        {
            client.SendNoticeAsync(tenantId, Actions.SelfProfileUpdated, null);
        }

        public void SendMsgToAdminFromNotAuthUser(int tenantId, string email, string message)
        {
            client.SendNoticeAsync(tenantId, Actions.UserMessageToAdmin, null, new TagValue(Tags.Body, message), new TagValue(Tags.UserEmail, email));
        }

        public void SendRequestTariff(bool license, string fname, string lname, string title, string email, string phone, string ctitle, string csize, string site, string message)
        {
            fname = (fname ?? "").Trim();
            if (string.IsNullOrEmpty(fname)) throw new ArgumentNullException("fname");
            lname = (lname ?? "").Trim();
            if (string.IsNullOrEmpty(lname)) throw new ArgumentNullException("lname");
            title = (title ?? "").Trim();
            email = (email ?? "").Trim();
            if (string.IsNullOrEmpty(email)) throw new ArgumentNullException("email");
            phone = (phone ?? "").Trim();
            if (string.IsNullOrEmpty(phone)) throw new ArgumentNullException("phone");
            ctitle = (ctitle ?? "").Trim();
            if (string.IsNullOrEmpty(ctitle)) throw new ArgumentNullException("ctitle");
            csize = (csize ?? "").Trim();
            if (string.IsNullOrEmpty(csize)) throw new ArgumentNullException("csize");
            site = (site ?? "").Trim();
            if (string.IsNullOrEmpty(site)) throw new ArgumentNullException("site");
            message = (message ?? "").Trim();

            var salesEmail = AdditionalWhiteLabelSettings.Instance.SalesEmail ?? SetupInfo.SalesEmail;

            var recipient = (IRecipient)(new DirectRecipient(SecurityContext.CurrentAccount.ID.ToString(), string.Empty, new[] { salesEmail }, false));

            client.SendNoticeToAsync(license ? Actions.RequestLicense : Actions.RequestTariff,
                                     new[] { recipient },
                                     new[] { "email.sender" },
                                     new TagValue(Tags.UserName, fname),
                                     new TagValue(Tags.UserLastName, lname),
                                     new TagValue(Tags.UserPosition, title),
                                     new TagValue(Tags.UserEmail, email),
                                     new TagValue(Tags.Phone, phone),
                                     new TagValue(Tags.Website, site),
                                     new TagValue(Tags.CompanyTitle, ctitle),
                                     new TagValue(Tags.CompanySize, csize),
                                     new TagValue(Tags.Body, message));
        }

        #region Voip

        public void SendToAdminVoipWarning(int tenantId, double balance)
        {
            client.SendNoticeAsync(tenantId, Actions.VoipWarning, null, new TagValue(Tags.Body, balance));
        }

        public void SendToAdminVoipBlocked(int tenantId)
        {
            client.SendNoticeAsync(tenantId, Actions.VoipBlocked, null);
        }

        #endregion

        #region User Password

        public void UserPasswordChange(int tenantId, UserInfo userInfo)
        {
            var hash = Hasher.Base64Hash(CoreContext.Authentication.GetUserPasswordHash(tenantId, userInfo.ID));
            var confirmationUrl = CommonLinkUtility.GetConfirmationUrl(userInfo.Email, ConfirmType.PasswordChange, hash);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonChangePassword;

            var action = CoreContext.Configuration.Personal
                             ? (CoreContext.Configuration.CustomMode ? Actions.PersonalCustomModePasswordChange : Actions.PersonalPasswordChange)
                             : Actions.PasswordChange;

            client.SendNoticeToAsync(
                        action,
                        StudioNotifyHelper.RecipientFromEmail(userInfo.Email, false),
                        new[] { EMailSenderName },
                        TagValues.GreenButton(greenButtonText, confirmationUrl));
        }

        #endregion

        #region User Email

        public void SendEmailChangeInstructions(UserInfo user, string email)
        {
            var confirmationUrl = CommonLinkUtility.GetConfirmationUrl(email, ConfirmType.EmailChange, SecurityContext.CurrentAccount.ID);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonChangeEmail;

            var action = CoreContext.Configuration.Personal
                             ? (CoreContext.Configuration.CustomMode ? Actions.PersonalCustomModeEmailChange : Actions.PersonalEmailChange)
                             : Actions.EmailChange;

            client.SendNoticeToAsync(
                        action,
                        StudioNotifyHelper.RecipientFromEmail(email, false),
                        new[] { EMailSenderName },
                        TagValues.GreenButton(greenButtonText, confirmationUrl),
                        new TagValue(CommonTags.Culture, user.GetCulture().Name));
        }

        public void SendEmailActivationInstructions(UserInfo user, string email)
        {
            var confirmationUrl = CommonLinkUtility.GetConfirmationUrl(email, ConfirmType.EmailActivation);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonActivateEmail;

            client.SendNoticeToAsync(
                        Actions.ActivateEmail,
                        StudioNotifyHelper.RecipientFromEmail(email, false),
                        new[] { EMailSenderName },
                        new TagValue(Tags.InviteLink, confirmationUrl),
                        TagValues.GreenButton(greenButtonText, confirmationUrl),
                        new TagValue(Tags.UserDisplayName, (user.DisplayUserName() ?? string.Empty).Trim()));
        }

        #endregion

        #region MailServer

        public void SendMailboxCreated(List<string> toEmails, string username, string address)
        {
            SendMailboxCreated(toEmails, username, address, null, null, -1, -1, null);
        }

        public void SendMailboxCreated(List<string> toEmails, string username, string address, string server,
            string encyption, int portImap, int portSmtp, string login)
        {
            var tags = new List<ITagValue>
            {
                new TagValue(Tags.UserName, username ?? string.Empty),
                new TagValue(Tags.Address, address ?? string.Empty)
            };

            var skipSettings = string.IsNullOrEmpty(server);

            if (!skipSettings)
            {
                var link = string.Format("{0}/addons/mail/#accounts/changepwd={1}",
                    CommonLinkUtility.GetFullAbsolutePath("~").TrimEnd('/'), address);

                tags.Add(new TagValue(Tags.MyStaffLink, link));
                tags.Add(new TagValue(Tags.Server, server));
                tags.Add(new TagValue(Tags.Encryption, encyption ?? string.Empty));
                tags.Add(new TagValue(Tags.ImapPort, portImap.ToString(CultureInfo.InvariantCulture)));
                tags.Add(new TagValue(Tags.SmtpPort, portSmtp.ToString(CultureInfo.InvariantCulture)));
                tags.Add(new TagValue(Tags.Login, login));
            }

            foreach (var email in toEmails)
            {
                client.SendNoticeToAsync(
                    skipSettings
                        ? Actions.MailboxWithoutSettingsCreated
                        : Actions.MailboxCreated,
                    StudioNotifyHelper.RecipientFromEmail(email, false),
                    new[] { EMailSenderName },
                    tags.ToArray());
            }
        }

        public void SendMailboxPasswordChanged(List<string> toEmails, string username, string address)
        {
            foreach (var email in toEmails)
            {
                client.SendNoticeToAsync(
                    Actions.MailboxPasswordChanged,
                    StudioNotifyHelper.RecipientFromEmail(email, false),
                    new[] { EMailSenderName },
                    new TagValue(Tags.UserName, username ?? string.Empty),
                    new TagValue(Tags.Address, address ?? string.Empty));
            }
        }

        #endregion

        public void SendMsgMobilePhoneChange(UserInfo userInfo)
        {
            var confirmationUrl = CommonLinkUtility.GetConfirmationUrl(userInfo.Email.ToLower(), ConfirmType.PhoneActivation);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonChangePhone;

            client.SendNoticeToAsync(
                Actions.PhoneChange,
                StudioNotifyHelper.RecipientFromEmail(userInfo.Email, false),
                new[] { EMailSenderName },
                TagValues.GreenButton(greenButtonText, confirmationUrl));
        }

        public void SendMsgTfaReset(UserInfo userInfo)
        {
            var confirmationUrl = CommonLinkUtility.GetConfirmationUrl(userInfo.Email.ToLower(), ConfirmType.TfaActivation);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonChangeTfa;

            client.SendNoticeToAsync(
                Actions.TfaChange,
                StudioNotifyHelper.RecipientFromEmail(userInfo.Email, false),
                new[] { EMailSenderName },
                TagValues.GreenButton(greenButtonText, confirmationUrl));
        }


        public void UserHasJoin(int tenantId)
        {
            client.SendNoticeAsync(tenantId, Actions.UserHasJoin, null);
        }

        public void SendJoinMsg(int tenantId, string email, EmployeeType emplType)
        {
            var inviteUrl = CommonLinkUtility.GetConfirmationUrl(email, ConfirmType.EmpInvite, (int)emplType, SecurityContext.CurrentAccount.ID)
                            + string.Format("&emplType={0}", emplType);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonJoin;

            client.SendNoticeToAsync(
                        Actions.JoinUsers,
                        StudioNotifyHelper.RecipientFromEmail(email, true),
                        new[] { EMailSenderName },
                        new TagValue(Tags.InviteLink, inviteUrl),
                        TagValues.GreenButton(greenButtonText, inviteUrl),
                        TagValues.SendFrom(tenantId));
        }

        public void UserInfoAddedAfterInvite(int tenantId, UserInfo newUserInfo)
        {
            if (!CoreContext.UserManager.UserExists(tenantId, newUserInfo.ID)) return;

            INotifyAction notifyAction;
            var footer = "social";
            var analytics = string.Empty;

            if (CoreContext.Configuration.Personal)
            {
                if (CoreContext.Configuration.CustomMode)
                {
                    notifyAction = Actions.PersonalCustomModeAfterRegistration1;
                    footer = "personalCustomMode";
                }
                else
                {
                    notifyAction = Actions.PersonalAfterRegistration1;
                    footer = "personal";
                }
            }
            else if (TenantExtra.Enterprise)
            {
                var defaultRebranding = MailWhiteLabelSettings.Instance.IsDefault;
                notifyAction = defaultRebranding
                                   ? Actions.EnterpriseUserWelcomeV10
                                   : CoreContext.Configuration.CustomMode
                                         ? Actions.EnterpriseWhitelabelUserWelcomeCustomMode
                                         : Actions.EnterpriseWhitelabelUserWelcomeV10;
                footer = null;
            }
            else
            {
                notifyAction = Actions.SaasUserWelcomeV10;
                analytics = StudioNotifyHelper.GetNotifyAnalytics(tenantId, notifyAction, false, false, true, false);
            }

            static string greenButtonText() => TenantExtra.Enterprise
                                      ? WebstudioNotifyPatternResource.ButtonAccessYourPortal
                                      : WebstudioNotifyPatternResource.ButtonAccessYouWebOffice;

            client.SendNoticeToAsync(
                notifyAction,
                StudioNotifyHelper.RecipientFromEmail(newUserInfo.Email, false),
                new[] { EMailSenderName },
                new TagValue(Tags.UserName, newUserInfo.FirstName.HtmlEncode()),
                new TagValue(Tags.MyStaffLink, GetMyStaffLink()),
                TagValues.GreenButton(greenButtonText, CommonLinkUtility.GetFullAbsolutePath("~").TrimEnd('/')),
                new TagValue(CommonTags.Footer, footer),
                new TagValue(CommonTags.MasterTemplate, CoreContext.Configuration.Personal ? "HtmlMasterPersonal" : "HtmlMaster"),
                new TagValue(CommonTags.Analytics, analytics));
        }

        public void GuestInfoAddedAfterInvite(int tenantId, UserInfo newUserInfo)
        {
            if (!CoreContext.UserManager.UserExists(tenantId, newUserInfo.ID)) return;

            INotifyAction notifyAction;
            var analytics = string.Empty;
            var footer = "social";

            if (TenantExtra.Enterprise)
            {
                var defaultRebranding = MailWhiteLabelSettings.Instance.IsDefault;
                notifyAction = defaultRebranding ? Actions.EnterpriseGuestWelcomeV10 : Actions.EnterpriseWhitelabelGuestWelcomeV10;
                footer = null;
            }
            else
            {
                notifyAction = Actions.SaasGuestWelcomeV10;
                var tenant = CoreContext.TenantManager.GetCurrentTenant();
                analytics = StudioNotifyHelper.GetNotifyAnalytics(tenant.TenantId, notifyAction, false, false, false, true);
            }

            static string greenButtonText() => TenantExtra.Enterprise
                                      ? WebstudioNotifyPatternResource.ButtonAccessYourPortal
                                      : WebstudioNotifyPatternResource.ButtonAccessYouWebOffice;

            client.SendNoticeToAsync(
                notifyAction,
                StudioNotifyHelper.RecipientFromEmail(newUserInfo.Email, false),
                new[] { EMailSenderName },
                new TagValue(Tags.UserName, newUserInfo.FirstName.HtmlEncode()),
                new TagValue(Tags.MyStaffLink, GetMyStaffLink()),
                TagValues.GreenButton(greenButtonText, CommonLinkUtility.GetFullAbsolutePath("~").TrimEnd('/')),
                new TagValue(CommonTags.Footer, footer),
                new TagValue(CommonTags.Analytics, analytics));
        }

        public void UserInfoActivation(int tenantId, UserInfo newUserInfo)
        {
            if (newUserInfo.IsActive)
                throw new ArgumentException("User is already activated!");

            INotifyAction notifyAction;
            var analytics = string.Empty;
            var footer = "social";

            if (TenantExtra.Enterprise)
            {
                var defaultRebranding = MailWhiteLabelSettings.Instance.IsDefault;
                notifyAction = defaultRebranding ? Actions.EnterpriseUserActivationV10 : Actions.EnterpriseWhitelabelUserActivationV10;
                footer = null;
            }
            else
            {
                notifyAction = Actions.SaasUserActivationV10;
                analytics = StudioNotifyHelper.GetNotifyAnalytics(tenantId, notifyAction, false, false, true, false);
            }

            var confirmationUrl = GenerateActivationConfirmUrl(newUserInfo);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonAccept;

            client.SendNoticeToAsync(
                notifyAction,
                StudioNotifyHelper.RecipientFromEmail(newUserInfo.Email, false),
                new[] { EMailSenderName },
                TagValues.GreenButton(greenButtonText, confirmationUrl),
                new TagValue(Tags.UserName, newUserInfo.FirstName.HtmlEncode()),
                new TagValue(CommonTags.Footer, footer),
                TagValues.SendFrom(tenantId),
                new TagValue(CommonTags.Analytics, analytics));
        }

        public void GuestInfoActivation(int tenantId, UserInfo newUserInfo)
        {
            if (newUserInfo.IsActive)
                throw new ArgumentException("User is already activated!");

            INotifyAction notifyAction;
            var analytics = string.Empty;
            var footer = "social";

            if (TenantExtra.Enterprise)
            {
                var defaultRebranding = MailWhiteLabelSettings.Instance.IsDefault;
                notifyAction = defaultRebranding ? Actions.EnterpriseGuestActivationV10 : Actions.EnterpriseWhitelabelGuestActivationV10;
                footer = null;
            }
            else
            {
                notifyAction = Actions.SaasGuestActivationV10;
                analytics = StudioNotifyHelper.GetNotifyAnalytics(tenantId, notifyAction, false, false, false, true);
            }

            var confirmationUrl = GenerateActivationConfirmUrl(newUserInfo);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonAccept;

            client.SendNoticeToAsync(
                notifyAction,
                StudioNotifyHelper.RecipientFromEmail(newUserInfo.Email, false),
                new[] { EMailSenderName },
                TagValues.GreenButton(greenButtonText, confirmationUrl),
                new TagValue(Tags.UserName, newUserInfo.FirstName.HtmlEncode()),
                new TagValue(CommonTags.Footer, footer),
                TagValues.SendFrom(tenantId),
                new TagValue(CommonTags.Analytics, analytics));
        }

        public void SendMsgProfileDeletion(UserInfo user)
        {
            var confirmationUrl = CommonLinkUtility.GetConfirmationUrl(user.Email, ConfirmType.ProfileRemove);

            static string greenButtonText() => CoreContext.Configuration.Personal ? WebstudioNotifyPatternResource.ButtonConfirmTermination : WebstudioNotifyPatternResource.ButtonRemoveProfile;

            var action = CoreContext.Configuration.Personal
                             ? (CoreContext.Configuration.CustomMode ? Actions.PersonalCustomModeProfileDelete : Actions.PersonalProfileDelete)
                             : Actions.ProfileDelete;

            client.SendNoticeToAsync(
                action,
                StudioNotifyHelper.RecipientFromEmail(user.Email, false),
                new[] { EMailSenderName },
                TagValues.GreenButton(greenButtonText, confirmationUrl),
                new TagValue(CommonTags.Culture, user.GetCulture().Name));
        }

        public void SendMsgReassignsCompleted(int tenantId, Guid recipientId, UserInfo fromUser, UserInfo toUser)
        {
            client.SendNoticeToAsync(
                Actions.ReassignsCompleted,
                new[] { StudioNotifyHelper.ToRecipient(tenantId, recipientId) },
                new[] { EMailSenderName },
                new TagValue(Tags.UserName, DisplayUserSettings.GetFullUserName(tenantId, recipientId)),
                new TagValue(Tags.FromUserName, fromUser.DisplayUserName()),
                new TagValue(Tags.FromUserLink, GetUserProfileLink(tenantId, fromUser.ID)),
                new TagValue(Tags.ToUserName, toUser.DisplayUserName()),
                new TagValue(Tags.ToUserLink, GetUserProfileLink(tenantId, toUser.ID)));
        }

        public void SendMsgReassignsFailed(int tenantId, Guid recipientId, UserInfo fromUser, UserInfo toUser, string message)
        {
            client.SendNoticeToAsync(
                Actions.ReassignsFailed,
                new[] { StudioNotifyHelper.ToRecipient(tenantId, recipientId) },
                new[] { EMailSenderName },
                new TagValue(Tags.UserName, DisplayUserSettings.GetFullUserName(tenantId, recipientId)),
                new TagValue(Tags.FromUserName, fromUser.DisplayUserName()),
                new TagValue(Tags.FromUserLink, GetUserProfileLink(tenantId, fromUser.ID)),
                new TagValue(Tags.ToUserName, toUser.DisplayUserName()),
                new TagValue(Tags.ToUserLink, GetUserProfileLink(tenantId, toUser.ID)),
                new TagValue(Tags.Message, message));
        }

        public void SendMsgRemoveUserDataCompleted(int tenantId, Guid recipientId, Guid fromUserId, string fromUserName, long docsSpace, long crmSpace, long mailSpace, long talkSpace)
        {
            client.SendNoticeToAsync(
                CoreContext.Configuration.CustomMode ? Actions.RemoveUserDataCompletedCustomMode : Actions.RemoveUserDataCompleted,
                new[] { StudioNotifyHelper.ToRecipient(tenantId, recipientId) },
                new[] { EMailSenderName },
                new TagValue(Tags.UserName, DisplayUserSettings.GetFullUserName(tenantId, recipientId)),
                new TagValue(Tags.FromUserName, fromUserName.HtmlEncode()),
                new TagValue(Tags.FromUserLink, GetUserProfileLink(tenantId, fromUserId)),
                new TagValue("DocsSpace", FileSizeComment.FilesSizeToString(docsSpace)),
                new TagValue("CrmSpace", FileSizeComment.FilesSizeToString(crmSpace)),
                new TagValue("MailSpace", FileSizeComment.FilesSizeToString(mailSpace)),
                new TagValue("TalkSpace", FileSizeComment.FilesSizeToString(talkSpace)));
        }

        public void SendMsgRemoveUserDataFailed(int tenantId, Guid recipientId, Guid fromUserId, string fromUserName, string message)
        {
            client.SendNoticeToAsync(
                Actions.RemoveUserDataFailed,
                new[] { StudioNotifyHelper.ToRecipient(tenantId, recipientId) },
                new[] { EMailSenderName },
                new TagValue(Tags.UserName, DisplayUserSettings.GetFullUserName(tenantId, recipientId)),
                new TagValue(Tags.FromUserName, fromUserName.HtmlEncode()),
                new TagValue(Tags.FromUserLink, GetUserProfileLink(tenantId, fromUserId)),
                new TagValue(Tags.Message, message));
        }

        public void SendAdminWelcome(UserInfo newUserInfo, int tenantId)
        {
            if (!CoreContext.UserManager.UserExists(tenantId, newUserInfo.ID)) return;

            if (!newUserInfo.IsActive)
                throw new ArgumentException("User is not activated yet!");

            INotifyAction notifyAction;
            var tagValues = new List<ITagValue>();

            if (TenantExtra.Enterprise)
            {
                var defaultRebranding = MailWhiteLabelSettings.Instance.IsDefault;
                notifyAction = defaultRebranding ? Actions.EnterpriseAdminWelcomeV10 : Actions.EnterpriseWhitelabelAdminWelcomeV10;

                tagValues.Add(TagValues.GreenButton(() => WebstudioNotifyPatternResource.ButtonAccessControlPanel, CommonLinkUtility.GetFullAbsolutePath("~" + SetupInfo.ControlPanelUrl)));
            }
            else
            {
                notifyAction = Actions.SaasAdminWelcomeV10;

                tagValues.Add(TagValues.GreenButton(() => WebstudioNotifyPatternResource.ButtonConfigureRightNow, CommonLinkUtility.GetFullAbsolutePath(CommonLinkUtility.GetAdministration(ManagementType.General))));

                var tenant = CoreContext.TenantManager.GetCurrentTenant();
                var analytics = StudioNotifyHelper.GetNotifyAnalytics(tenant.TenantId, notifyAction, false, true, false, false);
                tagValues.Add(new TagValue(CommonTags.Analytics, analytics));

                tagValues.Add(TagValues.TableTop());
                tagValues.Add(TagValues.TableItem(1, null, null, "https://static.onlyoffice.com/media/newsletters/images-v10/tips-welcome-regional-50.png", () => WebstudioNotifyPatternResource.pattern_saas_admin_welcome_v10_item_regional, null, null));
                tagValues.Add(TagValues.TableItem(2, null, null, "https://static.onlyoffice.com/media/newsletters/images-v10/tips-welcome-brand-50.png", () => WebstudioNotifyPatternResource.pattern_saas_admin_welcome_v10_item_brand, null, null));
                tagValues.Add(TagValues.TableItem(3, null, null, "https://static.onlyoffice.com/media/newsletters/images-v10/tips-welcome-customize-50.png", () => WebstudioNotifyPatternResource.pattern_saas_admin_welcome_v10_item_customize, null, null));
                tagValues.Add(TagValues.TableItem(4, null, null, "https://static.onlyoffice.com/media/newsletters/images-v10/tips-welcome-security-50.png", () => WebstudioNotifyPatternResource.pattern_saas_admin_welcome_v10_item_security, null, null));
                tagValues.Add(TagValues.TableItem(5, null, null, "https://static.onlyoffice.com/media/newsletters/images-v10/tips-welcome-usertrack-50.png", () => WebstudioNotifyPatternResource.pattern_saas_admin_welcome_v10_item_usertrack, null, null));
                tagValues.Add(TagValues.TableItem(6, null, null, "https://static.onlyoffice.com/media/newsletters/images-v10/tips-welcome-backup-50.png", () => WebstudioNotifyPatternResource.pattern_saas_admin_welcome_v10_item_backup, null, null));
                tagValues.Add(TagValues.TableItem(7, null, null, "https://static.onlyoffice.com/media/newsletters/images-v10/tips-welcome-telephony-50.png", () => WebstudioNotifyPatternResource.pattern_saas_admin_welcome_v10_item_telephony, null, null));
                tagValues.Add(TagValues.TableBottom());

                tagValues.Add(new TagValue(CommonTags.Footer, "common"));
            }

            tagValues.Add(new TagValue(Tags.UserName, newUserInfo.FirstName.HtmlEncode()));
            tagValues.Add(TagValues.SendFrom(tenantId));

            client.SendNoticeToAsync(
                notifyAction,
                StudioNotifyHelper.RecipientFromEmail(newUserInfo.Email, false),
                new[] { EMailSenderName },
                tagValues.ToArray());
        }

        #region Backup & Restore

        public void SendMsgBackupCompleted(int tenantId, Guid userId, string link)
        {
            client.SendNoticeToAsync(
                Actions.BackupCreated,
                new[] { StudioNotifyHelper.ToRecipient(tenantId, userId) },
                new[] { EMailSenderName },
                new TagValue(Tags.OwnerName, CoreContext.UserManager.GetUsers(tenantId, userId).DisplayUserName()));
        }

        public void SendMsgRestoreStarted(Tenant tenant, bool notifyAllUsers)
        {
            var owner = CoreContext.UserManager.GetUsers(tenant.TenantId, tenant.OwnerId);
            var users =
                notifyAllUsers
                    ? StudioNotifyHelper.RecipientFromEmail(CoreContext.UserManager.GetUsers(tenant, EmployeeStatus.Active).Where(r => r.ActivationStatus == EmployeeActivationStatus.Activated).Select(u => u.Email).ToArray(), false)
                    : owner.ActivationStatus == EmployeeActivationStatus.Activated ? StudioNotifyHelper.RecipientFromEmail(owner.Email, false) : new IDirectRecipient[0];

            client.SendNoticeToAsync(
                Actions.RestoreStarted,
                users,
                new[] { EMailSenderName });
        }

        public void SendMsgRestoreCompleted(Tenant tenant, bool notifyAllUsers)
        {
            var owner = CoreContext.UserManager.GetUsers(tenant.TenantId, tenant.OwnerId);

            var users =
                notifyAllUsers
                    ? CoreContext.UserManager.GetUsers(tenant, EmployeeStatus.Active).Select(u => StudioNotifyHelper.ToRecipient(tenant.TenantId, u.ID)).ToArray()
                    : new[] { StudioNotifyHelper.ToRecipient(tenant.TenantId, owner.ID) };

            client.SendNoticeToAsync(
                Actions.RestoreCompleted,
                users,
                new[] { EMailSenderName },
                new TagValue(Tags.OwnerName, owner.DisplayUserName()));
        }

        #endregion

        #region Portal Deactivation & Deletion

        public void SendMsgPortalDeactivation(Tenant t, string deactivateUrl, string activateUrl)
        {
            var u = CoreContext.UserManager.GetUsers(t.TenantId, t.OwnerId);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonDeactivatePortal;

            client.SendNoticeToAsync(
                        Actions.PortalDeactivate,
                        new IRecipient[] { u },
                        new[] { EMailSenderName },
                        new TagValue(Tags.ActivateUrl, activateUrl),
                        TagValues.GreenButton(greenButtonText, deactivateUrl),
                        new TagValue(Tags.OwnerName, u.DisplayUserName()));
        }

        public void SendMsgPortalDeletion(Tenant t, string url, bool showAutoRenewText)
        {
            var u = CoreContext.UserManager.GetUsers(t.TenantId, t.OwnerId);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonDeletePortal;

            client.SendNoticeToAsync(
                        Actions.PortalDelete,
                        new IRecipient[] { u },
                        new[] { EMailSenderName },
                        TagValues.GreenButton(greenButtonText, url),
                        new TagValue(Tags.AutoRenew, showAutoRenewText.ToString()),
                        new TagValue(Tags.OwnerName, u.DisplayUserName()));
        }

        public void SendMsgPortalDeletionSuccess(UserInfo owner, string url)
        {
            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonLeaveFeedback;

            client.SendNoticeToAsync(
                        Actions.PortalDeleteSuccessV10,
                        new IRecipient[] { owner },
                        new[] { EMailSenderName },
                        TagValues.GreenButton(greenButtonText, url),
                        new TagValue(Tags.OwnerName, owner.DisplayUserName()));
        }

        #endregion

        public void SendMsgDnsChange(Tenant t, string confirmDnsUpdateUrl, string portalAddress, string portalDns)
        {
            var u = CoreContext.UserManager.GetUsers(t.TenantId, t.OwnerId);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonConfirmPortalAddressChange;

            client.SendNoticeToAsync(
                        Actions.DnsChange,
                        new IRecipient[] { u },
                        new[] { EMailSenderName },
                        TagValues.GreenButton(greenButtonText, confirmDnsUpdateUrl),
                        new TagValue("PortalAddress", AddHttpToUrl(portalAddress)),
                        new TagValue("PortalDns", AddHttpToUrl(portalDns ?? string.Empty)),
                        new TagValue(Tags.OwnerName, u.DisplayUserName()));
        }


        public void SendMsgConfirmChangeOwner(Tenant t, string newOwnerName, string confirmOwnerUpdateUrl)
        {
            var u = CoreContext.UserManager.GetUsers(t.TenantId, t.OwnerId);

            static string greenButtonText() => WebstudioNotifyPatternResource.ButtonConfirmPortalOwnerUpdate;

            client.SendNoticeToAsync(
                        Actions.ConfirmOwnerChange,
                        new IRecipient[] { u },
                        new[] { EMailSenderName },
                        TagValues.GreenButton(greenButtonText, confirmOwnerUpdateUrl),
                        new TagValue(Tags.UserName, newOwnerName),
                        new TagValue(Tags.OwnerName, u.DisplayUserName()));
        }


        public void SendCongratulations(UserInfo u)
        {
            try
            {
                INotifyAction notifyAction;
                var footer = "common";
                var analytics = string.Empty;

                if (TenantExtra.Enterprise)
                {
                    var defaultRebranding = MailWhiteLabelSettings.Instance.IsDefault;
                    notifyAction = defaultRebranding ? Actions.EnterpriseAdminActivationV10 : Actions.EnterpriseWhitelabelAdminActivationV10;
                    footer = null;
                }
                else if (TenantExtra.Opensource)
                {
                    notifyAction = Actions.OpensourceAdminActivation;
                    footer = "opensource";
                }
                else
                {
                    notifyAction = Actions.SaasAdminActivationV10;
                    var tenant = CoreContext.TenantManager.GetCurrentTenant();
                    analytics = StudioNotifyHelper.GetNotifyAnalytics(tenant.TenantId, notifyAction, false, true, false, false);
                }

                var confirmationUrl = CommonLinkUtility.GetConfirmationUrl(u.Email, ConfirmType.EmailActivation);
                confirmationUrl += "&first=true";

                static string greenButtonText() => WebstudioNotifyPatternResource.ButtonConfirm;

                client.SendNoticeToAsync(
                    notifyAction,
                    StudioNotifyHelper.RecipientFromEmail(u.Email, false),
                    new[] { EMailSenderName },
                    new TagValue(Tags.UserName, u.FirstName.HtmlEncode()),
                    new TagValue(Tags.MyStaffLink, GetMyStaffLink()),
                    TagValues.GreenButton(greenButtonText, confirmationUrl),
                    new TagValue(CommonTags.Footer, footer),
                    new TagValue(CommonTags.Analytics, analytics));
            }
            catch (Exception error)
            {
                LogManager.GetLogger("ASC.Notify").Error(error);
            }
        }

        #region Personal

        public void SendInvitePersonal(int tenantId, string email, string additionalMember = "", bool analytics = true)
        {
            var newUserInfo = CoreContext.UserManager.GetUserByEmail(tenantId, email);
            if (CoreContext.UserManager.UserExists(tenantId, newUserInfo.ID)) return;

            var lang = CoreContext.Configuration.CustomMode
                           ? "ru-RU"
                           : Thread.CurrentThread.CurrentUICulture.TwoLetterISOLanguageName;

            var confirmUrl = CommonLinkUtility.GetConfirmationUrl(email, ConfirmType.EmpInvite, (int)EmployeeType.User)
                             + "&emplType=" + (int)EmployeeType.User
                             + "&analytics=" + analytics
                             + "&lang=" + lang
                             + additionalMember;

            client.SendNoticeToAsync(
                CoreContext.Configuration.CustomMode ? Actions.PersonalCustomModeConfirmation : Actions.PersonalConfirmation,
                StudioNotifyHelper.RecipientFromEmail(email, false),
                new[] { EMailSenderName },
                new TagValue(Tags.InviteLink, confirmUrl),
                new TagValue(CommonTags.Footer, CoreContext.Configuration.CustomMode ? "personalCustomMode" : "personal"),
                new TagValue(CommonTags.Culture, Thread.CurrentThread.CurrentUICulture.Name));
        }

        public void SendUserWelcomePersonal(int tenantId, UserInfo newUserInfo)
        {
            client.SendNoticeToAsync(
                CoreContext.Configuration.CustomMode ? Actions.PersonalCustomModeAfterRegistration1 : Actions.PersonalAfterRegistration1,
                StudioNotifyHelper.RecipientFromEmail(newUserInfo.Email, true),
                new[] { EMailSenderName },
                new TagValue(CommonTags.Footer, CoreContext.Configuration.CustomMode ? "personalCustomMode" : "personal"),
                new TagValue(CommonTags.MasterTemplate, "HtmlMasterPersonal"),
                TagValues.SendFrom(tenantId));
        }

        #endregion

        #region Migration Portal

        public void MigrationPortalStart(Tenant tenant, string region, bool notify)
        {
            MigrationNotify(tenant, Actions.MigrationPortalStart, region, string.Empty, notify);
        }

        public void MigrationPortalSuccess(Tenant tenant, string region, string url, bool notify)
        {
            MigrationNotify(tenant, Actions.MigrationPortalSuccess, region, url, notify);
        }

        public void MigrationPortalError(Tenant tenant, string region, string url, bool notify)
        {
            MigrationNotify(tenant, !string.IsNullOrEmpty(region) ? Actions.MigrationPortalError : Actions.MigrationPortalServerFailure, region, url, notify);
        }

        private void MigrationNotify(Tenant tenant, INotifyAction action, string region, string url, bool notify)
        {
            var users = CoreContext.UserManager.GetUsers(tenant)
                .Where(u => notify ? u.ActivationStatus.HasFlag(EmployeeActivationStatus.Activated) : u.IsOwner(tenant))
                .Select(u => StudioNotifyHelper.ToRecipient(tenant.TenantId, u.ID))
                .ToArray();

            if (users.Any())
            {
                client.SendNoticeToAsync(
                    action,
                    users,
                    new[] { EMailSenderName },
                    new TagValue(Tags.RegionName, TransferResourceHelper.GetRegionDescription(region)),
                    new TagValue(Tags.PortalUrl, url));
            }
        }

        public void PortalRenameNotify(Tenant tenant, string oldVirtualRootPath)
        {
            var users = CoreContext.UserManager.GetUsers(tenant)
                        .Where(u => u.ActivationStatus.HasFlag(EmployeeActivationStatus.Activated));

            ThreadPool.QueueUserWorkItem(_ =>
            {
                try
                {
                    CoreContext.TenantManager.SetCurrentTenant(tenant);

                    foreach (var u in users)
                    {
                        var culture = string.IsNullOrEmpty(u.CultureName) ? tenant.GetCulture() : u.GetCulture();
                        Thread.CurrentThread.CurrentCulture = culture;
                        Thread.CurrentThread.CurrentUICulture = culture;

                        client.SendNoticeToAsync(
                            Actions.PortalRename,
                            new[] { StudioNotifyHelper.ToRecipient(tenant.TenantId, u.ID) },
                            new[] { EMailSenderName },
                            new TagValue(Tags.PortalUrl, oldVirtualRootPath),
                            new TagValue(Tags.UserDisplayName, u.DisplayUserName()));
                    }
                }
                catch (Exception ex)
                {
                    LogManager.GetLogger("ASC.Notify").Error(ex);
                }
            });
        }

        #endregion

        #region Helpers

        private static string GetMyStaffLink()
        {
            return CommonLinkUtility.GetFullAbsolutePath(CommonLinkUtility.GetMyStaff());
        }

        private static string GetUserProfileLink(int tenantId, Guid userId)
        {
            return CommonLinkUtility.GetFullAbsolutePath(CommonLinkUtility.GetUserProfile(tenantId, userId));
        }

        private static string AddHttpToUrl(string url)
        {
            var httpPrefix = Uri.UriSchemeHttp + Uri.SchemeDelimiter;
            return !string.IsNullOrEmpty(url) && !url.StartsWith(httpPrefix) ? httpPrefix + url : url;
        }

        private static string GenerateActivationConfirmUrl(UserInfo user)
        {
            var confirmUrl = CommonLinkUtility.GetConfirmationUrl(user.Email, ConfirmType.Activation);

            return confirmUrl + string.Format("&uid={0}&firstname={1}&lastname={2}",
                                              SecurityContext.CurrentAccount.ID,
                                              HttpUtility.UrlEncode(user.FirstName),
                                              HttpUtility.UrlEncode(user.LastName));
        }

        #endregion
    }
}