[PM-13013] add delete many async method to i user repository and i user service for bulk user deletion (#5035)

* Add DeleteManyAsync method and stored procedure

* Add DeleteManyAsync and tests

* removed stored procedure, refactor User_DeleteById to accept multiple Ids

* add sproc, refactor tests

* revert existing sproc

* add bulk delete to IUserService

* fix sproc

* fix and add tests

* add migration script, fix test

* Add feature flag

* add feature flag to tests for deleteManyAsync

* enable nullable, delete only user that pass validation

* revert changes to DeleteAsync

* Cleanup whitespace

* remove redundant feature flag

* fix tests

* move DeleteManyAsync from UserService into DeleteManagedOrganizationUserAccountCommand

* refactor validation, remove unneeded tasks

* refactor tests, remove unused service

util/Migrator/DbScripts/2024-11-22_00_UserDeleteByIds.sql

@@ -0,0 +1,158 @@
+CREATE OR ALTER PROCEDURE [dbo].[User_DeleteByIds]
+    @Ids NVARCHAR(MAX)
+WITH RECOMPILE
+AS
+BEGIN
+    SET NOCOUNT ON
+    -- Declare a table variable to hold the parsed JSON data
+    DECLARE @ParsedIds TABLE (Id UNIQUEIDENTIFIER);
+
+    -- Parse the JSON input into the table variable
+    INSERT INTO @ParsedIds (Id)
+    SELECT value
+    FROM OPENJSON(@Ids);
+
+    -- Check if the input table is empty
+    IF (SELECT COUNT(1) FROM @ParsedIds) < 1
+    BEGIN
+        RETURN(-1);
+    END
+
+    DECLARE @BatchSize INT = 100
+
+    -- Delete ciphers
+    WHILE @BatchSize > 0
+    BEGIN
+        BEGIN TRANSACTION User_DeleteById_Ciphers
+
+        DELETE TOP(@BatchSize)
+        FROM
+            [dbo].[Cipher]
+        WHERE
+            [UserId] IN (SELECT * FROM @ParsedIds)
+
+        SET @BatchSize = @@ROWCOUNT
+
+        COMMIT TRANSACTION User_DeleteById_Ciphers
+    END
+
+    BEGIN TRANSACTION User_DeleteById
+
+    -- Delete WebAuthnCredentials
+    DELETE
+    FROM
+        [dbo].[WebAuthnCredential]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete folders
+    DELETE
+    FROM
+        [dbo].[Folder]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete AuthRequest, must be before Device
+    DELETE
+    FROM
+        [dbo].[AuthRequest]
+    WHERE 
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete devices
+    DELETE
+    FROM
+        [dbo].[Device]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete collection users
+    DELETE
+        CU
+    FROM
+        [dbo].[CollectionUser] CU
+        INNER JOIN
+        [dbo].[OrganizationUser] OU ON OU.[Id] = CU.[OrganizationUserId]
+    WHERE
+        OU.[UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete group users
+    DELETE
+        GU
+    FROM
+        [dbo].[GroupUser] GU
+        INNER JOIN
+        [dbo].[OrganizationUser] OU ON OU.[Id] = GU.[OrganizationUserId]
+    WHERE
+        OU.[UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete AccessPolicy
+    DELETE
+        AP
+    FROM
+        [dbo].[AccessPolicy] AP
+        INNER JOIN
+        [dbo].[OrganizationUser] OU ON OU.[Id] = AP.[OrganizationUserId]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete organization users
+    DELETE
+    FROM
+        [dbo].[OrganizationUser]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete provider users
+    DELETE
+    FROM
+        [dbo].[ProviderUser]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete SSO Users
+    DELETE
+    FROM
+        [dbo].[SsoUser]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete Emergency Accesses
+    DELETE
+    FROM
+        [dbo].[EmergencyAccess]
+    WHERE
+        [GrantorId] IN (SELECT * FROM @ParsedIds)
+        OR
+        [GranteeId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete Sends
+    DELETE
+    FROM
+        [dbo].[Send]
+    WHERE 
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete Notification Status
+    DELETE
+    FROM
+        [dbo].[NotificationStatus]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+
+    -- Delete Notification
+    DELETE
+    FROM
+        [dbo].[Notification]
+    WHERE
+        [UserId] IN (SELECT * FROM @ParsedIds)
+    
+    -- Finally, delete the user
+    DELETE
+    FROM
+        [dbo].[User]
+    WHERE
+        [Id] IN (SELECT * FROM @ParsedIds)
+
+    COMMIT TRANSACTION User_DeleteById
+END