/*
 *
 * (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 Constants = ASC.Core.Users.Constants;

namespace ASC.Core;

[Scope]
class ConfigureHostedSolution : IConfigureNamedOptions<HostedSolution>
{
    private readonly UserFormatter _userFormatter;
    private readonly IOptionsSnapshot<CachedTenantService> _tenantService;
    private readonly IOptionsSnapshot<CachedUserService> _userService;
    private readonly IOptionsSnapshot<CachedQuotaService> _quotaService;
    private readonly IOptionsSnapshot<TariffService> _tariffService;
    private readonly IOptionsSnapshot<TenantManager> _tenantManager;
    private readonly IOptionsSnapshot<TenantUtil> _tenantUtil;
    private readonly IOptionsSnapshot<DbSettingsManager> _dbSettingsManager;
    private readonly IOptionsSnapshot<CoreSettings> _coreSettings;

    public ConfigureHostedSolution(
        UserFormatter userFormatter,
        IOptionsSnapshot<CachedTenantService> tenantService,
        IOptionsSnapshot<CachedUserService> userService,
        IOptionsSnapshot<CachedQuotaService> quotaService,
        IOptionsSnapshot<TariffService> tariffService,
        IOptionsSnapshot<TenantManager> tenantManager,
        IOptionsSnapshot<TenantUtil> tenantUtil,
        IOptionsSnapshot<DbSettingsManager> dbSettingsManager,
        IOptionsSnapshot<CoreSettings> coreSettings
        )
    {
        _userFormatter = userFormatter;
        _tenantService = tenantService;
        _userService = userService;
        _quotaService = quotaService;
        _tariffService = tariffService;
        _tenantManager = tenantManager;
        _tenantUtil = tenantUtil;
        _dbSettingsManager = dbSettingsManager;
        _coreSettings = coreSettings;
    }

    public void Configure(HostedSolution hostedSolution)
    {
        hostedSolution.UserFormatter = _userFormatter;
        hostedSolution.TenantService = _tenantService.Value;
        hostedSolution.UserService = _userService.Value;
        hostedSolution.QuotaService = _quotaService.Value;
        hostedSolution.TariffService = _tariffService.Value;
        hostedSolution.ClientTenantManager = _tenantManager.Value;
        hostedSolution.TenantUtil = _tenantUtil.Value;
        hostedSolution.SettingsManager = _dbSettingsManager.Value;
        hostedSolution.CoreSettings = _coreSettings.Value;
    }

    public void Configure(string name, HostedSolution hostedSolution)
    {
        Configure(hostedSolution);
        hostedSolution.Region = name;
        hostedSolution.TenantService = _tenantService.Get(name);
        hostedSolution.UserService = _userService.Get(name);
        hostedSolution.QuotaService = _quotaService.Get(name);
        hostedSolution.TariffService = _tariffService.Get(name);
        hostedSolution.ClientTenantManager = _tenantManager.Get(name);
        hostedSolution.TenantUtil = _tenantUtil.Get(name);
        hostedSolution.SettingsManager = _dbSettingsManager.Get(name);
        hostedSolution.CoreSettings = _coreSettings.Get(name);
    }
}

[Scope(typeof(ConfigureHostedSolution))]
public class HostedSolution
{
    internal ITenantService TenantService;
    internal IUserService UserService;
    internal IQuotaService QuotaService;
    internal ITariffService TariffService;
    internal UserFormatter UserFormatter;
    internal TenantManager ClientTenantManager;
    internal TenantUtil TenantUtil;
    internal DbSettingsManager SettingsManager;
    internal CoreSettings CoreSettings;

    public string Region { get; set; }

    public HostedSolution() { }

    public List<Tenant> GetTenants(DateTime from)
    {
        return TenantService.GetTenants(from).Select(AddRegion).ToList();
    }

    public List<Tenant> FindTenants(string login)
    {
        return FindTenants(login, null);
    }

    public List<Tenant> FindTenants(string login, string passwordHash)
    {
        if (!string.IsNullOrEmpty(passwordHash) && UserService.GetUserByPasswordHash(Tenant.DefaultTenant, login, passwordHash) == null)
        {
            throw new SecurityException("Invalid login or password.");
        }

        return TenantService.GetTenants(login, passwordHash).Select(AddRegion).ToList();
    }

    public Tenant GetTenant(string domain)
    {
        return AddRegion(TenantService.GetTenant(domain));
    }

    public Tenant GetTenant(int id)
    {
        return AddRegion(TenantService.GetTenant(id));
    }

    public void CheckTenantAddress(string address)
    {
        TenantService.ValidateDomain(address);
    }

    public void RegisterTenant(TenantRegistrationInfo ri, out Tenant tenant)
    {
        if (ri == null)
        {
            throw new ArgumentNullException("registrationInfo");
        }
        if (string.IsNullOrEmpty(ri.Address))
        {
            throw new Exception("Address can not be empty");
        }
        if (string.IsNullOrEmpty(ri.Email))
        {
            throw new Exception("Account email can not be empty");
        }
        if (ri.FirstName == null)
        {
            throw new Exception("Account firstname can not be empty");
        }
        if (ri.LastName == null)
        {
            throw new Exception("Account lastname can not be empty");
        }
        if (!UserFormatter.IsValidUserName(ri.FirstName, ri.LastName))
        {
            throw new Exception("Incorrect firstname or lastname");
        }

        if (string.IsNullOrEmpty(ri.PasswordHash))
        {
            ri.PasswordHash = Guid.NewGuid().ToString();
        }

        // create tenant
        tenant = new Tenant(ri.Address.ToLowerInvariant())
        {
            Name = ri.Name,
            Language = ri.Culture.Name,
            TimeZone = ri.TimeZoneInfo.Id,
            HostedRegion = ri.HostedRegion,
            PartnerId = ri.PartnerId,
            AffiliateId = ri.AffiliateId,
            Campaign = ri.Campaign,
            Industry = ri.Industry,
            Spam = ri.Spam,
            Calls = ri.Calls
        };

        tenant = TenantService.SaveTenant(CoreSettings, tenant);

        // create user
        var user = new UserInfo
        {
            UserName = ri.Email.Substring(0, ri.Email.IndexOf('@')),
            LastName = ri.LastName,
            FirstName = ri.FirstName,
            Email = ri.Email,
            MobilePhone = ri.MobilePhone,
            WorkFromDate = TenantUtil.DateTimeNow(tenant.TimeZone),
            ActivationStatus = ri.ActivationStatus
        };

        user = UserService.SaveUser(tenant.Id, user);
        UserService.SetUserPasswordHash(tenant.Id, user.Id, ri.PasswordHash);
        UserService.SaveUserGroupRef(tenant.Id, new UserGroupRef(user.Id, Constants.GroupAdmin.ID, UserGroupRefType.Contains));

        // save tenant owner
        tenant.OwnerId = user.Id;
        tenant = TenantService.SaveTenant(CoreSettings, tenant);

        SettingsManager.SaveSettings(new TenantControlPanelSettings { LimitedAccess = ri.LimitedControlPanel }, tenant.Id);
    }

    public Tenant SaveTenant(Tenant tenant)
    {
        return TenantService.SaveTenant(CoreSettings, tenant);
    }

    public void RemoveTenant(Tenant tenant)
    {
        TenantService.RemoveTenant(tenant.Id);
    }

    public string CreateAuthenticationCookie(CookieStorage cookieStorage, int tenantId, Guid userId)
    {
        var u = UserService.GetUser(tenantId, userId);

        return CreateAuthenticationCookie(cookieStorage, tenantId, u);
    }

    private string CreateAuthenticationCookie(CookieStorage cookieStorage, int tenantId, UserInfo user)
    {
        if (user == null)
        {
            return null;
        }

        var tenantSettings = SettingsManager.LoadSettingsFor<TenantCookieSettings>(tenantId, Guid.Empty);
        var expires = tenantSettings.IsDefault() ? DateTime.UtcNow.AddYears(1) : DateTime.UtcNow.AddMinutes(tenantSettings.LifeTime);
        var userSettings = SettingsManager.LoadSettingsFor<TenantCookieSettings>(tenantId, user.Id);

        return cookieStorage.EncryptCookie(tenantId, user.Id, tenantSettings.Index, expires, userSettings.Index);
    }

    public Tariff GetTariff(int tenant, bool withRequestToPaymentSystem = true)
    {
        return TariffService.GetTariff(tenant, withRequestToPaymentSystem);
    }

    public TenantQuota GetTenantQuota(int tenant)
    {
        return ClientTenantManager.GetTenantQuota(tenant);
    }

    public IEnumerable<TenantQuota> GetTenantQuotas()
    {
        return ClientTenantManager.GetTenantQuotas();
    }

    public TenantQuota SaveTenantQuota(TenantQuota quota)
    {
        return ClientTenantManager.SaveTenantQuota(quota);
    }

    public void SetTariff(int tenant, bool paid)
    {
        var quota = QuotaService.GetTenantQuotas().FirstOrDefault(q => paid ? q.NonProfit : q.Trial);
        if (quota != null)
        {
            TariffService.SetTariff(tenant, new Tariff { QuotaId = quota.Tenant, DueDate = DateTime.MaxValue, });
        }
    }

    public void SetTariff(int tenant, Tariff tariff)
    {
        TariffService.SetTariff(tenant, tariff);
    }

    public void SaveButton(int tariffId, string partnerId, string buttonUrl)
    {
        TariffService.SaveButton(tariffId, partnerId, buttonUrl);
    }
    public IEnumerable<UserInfo> FindUsers(IEnumerable<Guid> userIds)
    {
        return UserService.GetUsersAllTenants(userIds);
    }

    private Tenant AddRegion(Tenant tenant)
    {
        if (tenant != null)
        {
            tenant.HostedRegion = Region;
        }

        return tenant;
    }
}