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

util/Migrator/DbScripts/2020-07-27_00_SsoUser.sql

@@ -0,0 +1,155 @@
+IF OBJECT_ID('[dbo].[SsoUser]') IS NULL
+BEGIN
+    CREATE TABLE [dbo].[SsoUser] (
+        [Id]                BIGINT           IDENTITY (1, 1) NOT NULL,
+        [UserId]            UNIQUEIDENTIFIER NOT NULL,
+        [OrganizationId]    UNIQUEIDENTIFIER NULL,
+        [ExternalId]        NVARCHAR(50)     NOT NULL,
+        [CreationDate]      DATETIME2 (7)    NOT NULL,
+        CONSTRAINT [PK_SsoUser] PRIMARY KEY CLUSTERED ([Id] ASC),
+        CONSTRAINT [FK_SsoUser_User] FOREIGN KEY ([UserId]) REFERENCES [dbo].[User] ([Id]) ON DELETE CASCADE,
+        CONSTRAINT [FK_SsoUser_Organization] FOREIGN KEY ([OrganizationId]) REFERENCES [dbo].[Organization] ([Id])
+    );
+
+    CREATE UNIQUE NONCLUSTERED INDEX [IX_SsoUser_OrganizationIdExternalId]
+        ON [dbo].[SsoUser]([OrganizationId] ASC, [ExternalId] ASC)
+        INCLUDE ([UserId]);
+
+    CREATE UNIQUE NONCLUSTERED INDEX [IX_SsoUser_OrganizationIdUserId]
+        ON [dbo].[SsoUser]([OrganizationId] ASC, [UserId] ASC);
+END
+GO
+
+IF OBJECT_ID('[dbo].[SsoUser_ReadById]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[SsoUser_ReadById]
+END
+GO
+
+CREATE PROCEDURE [dbo].[SsoUser_ReadById]
+    @Id BIGINT
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        *
+    FROM
+        [dbo].[SsoUserView]
+    WHERE
+        [Id] = @Id
+END
+GO
+
+IF OBJECT_ID('[dbo].[SsoUser_Create]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[SsoUser_Create]
+END
+GO
+
+CREATE PROCEDURE [dbo].[SsoUser_Create]
+    @Id BIGINT OUTPUT,
+    @UserId UNIQUEIDENTIFIER,
+    @OrganizationId UNIQUEIDENTIFIER,
+    @ExternalId NVARCHAR(50),
+    @CreationDate DATETIME2(7)
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    INSERT INTO [dbo].[SsoUser]
+    (
+        [UserId],
+        [OrganizationId],
+        [ExternalId],
+        [CreationDate]
+    )
+    VALUES
+    (
+        @UserId,
+        @OrganizationId,
+        @ExternalId,
+        @CreationDate
+    )
+
+    SET @Id = SCOPE_IDENTITY();
+END
+GO
+
+IF OBJECT_ID('[dbo].[SsoUser_Update]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[SsoUser_Update]
+END
+GO
+
+CREATE PROCEDURE [dbo].[SsoUser_Update]
+    @Id BIGINT OUTPUT,
+    @UserId UNIQUEIDENTIFIER,
+    @OrganizationId UNIQUEIDENTIFIER,
+    @ExternalId NVARCHAR(50),
+    @CreationDate DATETIME2(7)
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    UPDATE
+        [dbo].[SsoUser]
+    SET
+        [UserId] = @UserId,
+        [OrganizationId] = @OrganizationId,
+        [ExternalId] = @ExternalId,
+        [CreationDate] = @CreationDate
+    WHERE
+        [Id] = @Id
+END
+GO
+
+IF OBJECT_ID('[dbo].[SsoUser_Delete]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[SsoUser_Delete]
+END
+GO
+
+CREATE PROCEDURE [dbo].[SsoUser_Delete]
+    @UserId UNIQUEIDENTIFIER,
+    @OrganizationId UNIQUEIDENTIFIER
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    DELETE
+    FROM
+        [dbo].[SsoUser]
+    WHERE
+        [UserId] = @UserId
+        AND [OrganizationId] = @OrganizationId
+END
+GO
+
+IF OBJECT_ID('[dbo].[User_ReadBySsoUserOrganizationIdExternalId]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[User_ReadBySsoUserOrganizationIdExternalId]
+END
+GO
+
+CREATE PROCEDURE [dbo].[User_ReadBySsoUserOrganizationIdExternalId]
+    @OrganizationId UNIQUEIDENTIFIER,
+    @ExternalId NVARCHAR(50)
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        U.*
+    FROM
+        [dbo].[UserView] U
+    INNER JOIN
+        [dbo].[SsoUser] SU ON SU.[UserId] = U.[Id]
+    WHERE
+        (
+            (@OrganizationId IS NULL AND SU.[OrganizationId] IS NULL)
+            OR (@OrganizationId IS NOT NULL AND SU.[OrganizationId] = @OrganizationId)
+        )
+        AND SU.[ExternalId] = @ExternalId
+END
+GO