Sso user table, model and repo stubbed out (#837)

* Sso user table, model and repo stubbed out

* switch to nullable org id, bigint id

* update GetBySsoUserAsync

* cleanup migrator file

* fix EF user repo

* fix pg repo

* is `IS NULL` checks

* unique indexes

* update migration scripts

* add another unique index

* remove old script

src/Core/Models/Table/SsoUser.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace Bit.Core.Models.Table
+{
+    public class SsoUser : ITableObject<long>
+    {
+        public long Id { get; set; }
+        public Guid UserId { get; set; }
+        public Guid? OrganizationId { get; set; }
+        public string ExternalId { get; set; }
+        public DateTime CreationDate { get; internal set; } = DateTime.UtcNow;
+
+        public void SetNewId()
+        {
+            // nothing - int will be auto-populated
+        }
+    }
+}

src/Core/Repositories/EntityFramework/UserRepository.cs

@@ -8,6 +8,7 @@ using Microsoft.EntityFrameworkCore;
 using System.Collections.Generic;
 using System.Linq;
 using Microsoft.Extensions.DependencyInjection;
+using Bit.Core.Models.Table;
 
 namespace Bit.Core.Repositories.EntityFramework
 {
@@ -122,5 +123,10 @@ namespace Bit.Core.Repositories.EntityFramework
                 await dbContext.SaveChangesAsync();
             }
         }
+
+        public Task<User> GetBySsoUserAsync(string externalId, Guid? organizationId)
+        {
+            throw new NotImplementedException();
+        }
     }
 }

src/Core/Repositories/ISsoUserRepository.cs

@@ -0,0 +1,8 @@
+using Bit.Core.Models.Table;
+
+namespace Bit.Core.Repositories
+{
+    public interface ISsoUserRepository : IRepository<SsoUser, long>
+    {
+    }
+}

src/Core/Repositories/IUserRepository.cs

@@ -9,6 +9,7 @@ namespace Bit.Core.Repositories
     public interface IUserRepository : IRepository<User, Guid>
     {
         Task<User> GetByEmailAsync(string email);
+        Task<User> GetBySsoUserAsync(string externalId, Guid? organizationId);
         Task<UserKdfInformation> GetKdfInformationByEmailAsync(string email);
         Task<ICollection<User>> SearchAsync(string email, int skip, int take);
         Task<ICollection<User>> GetManyByPremiumAsync(bool premium);

src/Core/Repositories/PostgreSql/UserRepository.cs

@@ -155,5 +155,10 @@ namespace Bit.Core.Repositories.PostgreSql
                     commandType: CommandType.StoredProcedure);
             }
         }
+
+        public Task<User> GetBySsoUserAsync(string externalId, Guid? organizationId)
+        {
+            throw new NotImplementedException();
+        }
     }
 }

src/Core/Repositories/SqlServer/SsoUserRepository.cs

@@ -0,0 +1,15 @@
+using Bit.Core.Models.Table;
+
+namespace Bit.Core.Repositories.SqlServer
+{
+    public class SsoUserRepository : Repository<SsoUser, long>, ISsoUserRepository
+    {
+        public SsoUserRepository(GlobalSettings globalSettings)
+            : this(globalSettings.SqlServer.ConnectionString, globalSettings.SqlServer.ReadOnlyConnectionString)
+        { }
+
+        public SsoUserRepository(string connectionString, string readOnlyConnectionString)
+            : base(connectionString, readOnlyConnectionString)
+        { }
+    }
+}

src/Core/Repositories/SqlServer/UserRepository.cs

@@ -38,6 +38,19 @@ namespace Bit.Core.Repositories.SqlServer
             }
         }
 
+        public async Task<User> GetBySsoUserAsync(string externalId, Guid? organizationId)
+        {
+            using (var connection = new SqlConnection(ConnectionString))
+            {
+                var results = await connection.QueryAsync<User>(
+                    $"[{Schema}].[{Table}_ReadBySsoUserOrganizationIdExternalId]",
+                    new { OrganizationId = organizationId, ExternalId = externalId },
+                    commandType: CommandType.StoredProcedure);
+
+                return results.SingleOrDefault();
+            }
+        }
+
         public async Task<UserKdfInformation> GetKdfInformationByEmailAsync(string email)
         {
             using (var connection = new SqlConnection(ConnectionString))

src/Core/Utilities/ServiceCollectionExtensions.cs

@@ -74,6 +74,7 @@ namespace Bit.Core.Utilities
                 services.AddSingleton<ITransactionRepository, SqlServerRepos.TransactionRepository>();
                 services.AddSingleton<IPolicyRepository, SqlServerRepos.PolicyRepository>();
                 services.AddSingleton<ISsoConfigRepository, SqlServerRepos.SsoConfigRepository>();
+                services.AddSingleton<ISsoUserRepository, SqlServerRepos.SsoUserRepository>();
             }
 
             if (globalSettings.SelfHosted)