USE [Elyse_DB]
GO
/****** Object:  StoredProcedure [authorising].[usp_DEL_form_group_owner]    Script Date: Sat 05-09-2026 7:01:55 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:		Silkwood Software
-- Create date: 06-08-2023
-- Description:	Initial creation
-- Deletes a form group owner record.
-- Input is the sid_id of the user from the sid_list table and 
-- the form group id.  
-- Output is a status message and a transaction status.  
/*
COPYRIGHT NOTICE
This database schema and stored procedures are protected by copyright.
Copyright.  Silkwood Software Pty. Ltd. 2023
*/
-- =============================================
CREATE PROCEDURE [authorising].[usp_DEL_form_group_owner] 

     @formgroupid bigint              = NULL,  -- Form group to delete ownership of
	 @user_sid_id bigint              = NULL,  -- User sid_id from the sid_list table
	 @notes nvarchar(1000)            = '',
	 @app_reference nvarchar(1000)    = '',    -- Optional
	 @message nvarchar(1000)          = '' OUTPUT,
	 @transaction_status nvarchar(50) = NULL OUTPUT


AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

  DECLARE 
        @tempmessage nvarchar(300)           = '',
	    @transactionmessage nvarchar(300)    = '',     -- Communicates what was the outcome of the transaction
	    @validationmessage nvarchar(200)     = '',     -- Communicates that the transaction failed due to data validation
		@nopermissionmessage nvarchar(200)   = '',     -- Communicates that the user does not have the required permission
		@recordnotexistmessage nvarchar(200) = '',     -- Communicates that the record does not
		@username nvarchar(150)              = ORIGINAL_LOGIN(),     -- The username 
		@connectedusersid varbinary(100)     = SUSER_SID(ORIGINAL_LOGIN()),   -- The SID of the connected user
		@userauthentication_status nchar(10) = 'Fail', -- The outcome of the authentication check of the user 
		@transaction_ready nchar(10)         = 'Ready',
		@data_validation_status nchar(10)    = 'Pass';

  SET @transaction_status = 'Transaction not attempted';  -- Parameters which have not been explicitly set might be output as null to calling functions
	 
  -- Connected user authentication
  -- Authenticate the connected user as an authoriser
  EXEC [internal].[usp_AUTHENTICATE_authoriser] 
		@user_authentication_result = @userauthentication_status OUTPUT;
  IF @userauthentication_status = 'Fail'
    BEGIN  -- The user does not have permission for this action
		SET @transaction_ready      = 'Fail';
	    EXEC internal.usp_SEL_message 
            @message_id   = 'NoPermission', 
			@message_text = @tempmessage OUTPUT;
	    IF (@tempmessage IS NOT NULL) 
  	       SET @nopermissionmessage = @username + '  ' + @tempmessage;
	    ELSE 
		   SET @nopermissionmessage = 'A database level message error occurred on NoPermission.';
	END

  IF @userauthentication_status = 'Pass' -- Don't do anything if the user is not authorised.
    BEGIN
	  -- Data validation
      -- Check if a matching record does not exist
			 IF NOT EXISTS (SELECT form_group_id, sid_id
				   	          FROM user_restr.form_group_owners 
					    	 WHERE         form_group_id = @formgroupid
						           AND sid_id = @user_sid_id)
			   BEGIN
				 EXEC internal.usp_SEL_message 
					  @message_id   = 'NotExist', 
					  @message_text = @tempmessage OUTPUT;
				 IF (@tempmessage IS NOT NULL) 
  					SET @recordnotexistmessage =  @tempmessage;
				 ELSE 
					  SET @recordnotexistmessage = 'A database level message error occurred on NotExist';
				 SET @data_validation_status = 'Fail';
				 SET @transaction_ready      = 'Fail';
			   END

	  -- Output the data validation status failed message
	  IF @data_validation_status = 'Fail'
		BEGIN
		  EXEC internal.usp_SEL_message 
			   @message_id   = 'FailedDataValidation', 
			   @message_text = @tempmessage OUTPUT;
		  IF (@tempmessage IS NOT NULL) 
			 SET @transactionmessage = @tempmessage;
		  ELSE 
			   SET @transactionmessage = 'A database level message error occurred on FailedDataValidation.';
		END
	  -- End data validation
    END -- End of IF authentication status = Pass.

-- Execute the insert query
  IF @transaction_ready = 'Ready'
	BEGIN
	  BEGIN TRY

	  BEGIN TRANSACTION;

	  INSERT INTO user_restr.user_privilege_revoke_log -- Create an audit log entry
	              (privilege, privilege_name, sid_id, username, granted_on, granted_by, revoked_by)
	       VALUES ('Form Group Owner',
		          (SELECT attr_name FROM forms.form_group_names
				                   WHERE form_group_id  
								 		= @formgroupid),
		          @user_sid_id,
		          (SELECT username FROM user_restr.sid_list
				                  WHERE         sid_id 
										= @user_sid_id),
		          (SELECT created FROM user_restr.form_group_owners
				                 WHERE  form_group_id  
								 		= @formgroupid
										AND     sid_id 
										= @user_sid_id),
		          (SELECT granted_by FROM user_restr.form_group_owners
				                 WHERE  form_group_id  
								 		= @formgroupid
										AND     sid_id 
										= @user_sid_id),
				  @username)

	     DELETE FROM user_restr.form_group_owners
               WHERE     form_group_id = @formgroupid
			         AND sid_id = @user_sid_id; 

         -- Write to the privilege log --

		 INSERT INTO user_restr.user_privilege_log
		             (privilege_type,                  privilege_name,           sid_id,      username, action_type, 
					 created_by_sid_id, valid_from, valid_until, notes, app_reference)
			  VALUES ('Form Group Owner', 
			           (SELECT attr_name
				          FROM forms.form_group_names
						 WHERE form_group_id = @formgroupid),         
					   @user_sid_id, 
					   (SELECT username
		                  FROM user_restr.sid_list
						 WHERE sid_id = @user_sid_id), 
					   'Revoke',
			         (SELECT sid_id
		                FROM user_restr.sid_list
					   WHERE sid = @connectedusersid), 
					 NULL, NULL, @notes, @app_reference)


       COMMIT TRANSACTION;

         EXEC internal.usp_SEL_message 
              @message_id   = 'Success', 
              @message_text = @tempmessage OUTPUT;
  	     IF (@tempmessage IS NOT NULL) 
	        SET @transactionmessage = @tempmessage;
	     ELSE 
		      SET @transactionmessage = 'A database level message error occurred on Success.';
		 SET @transaction_status = 'Good';

   	  END TRY
	  BEGIN CATCH

	     IF XACT_STATE() <> 0
            ROLLBACK TRANSACTION;

	     SET @transaction_status = 'Bad';
         EXEC internal.usp_SEL_message 
              @message_id   = 'DeleteError', 
              @message_text = @tempmessage OUTPUT;
		 IF (@tempmessage IS NOT NULL) 
		    SET @transactionmessage = @tempmessage + ' | ' + 
		    CONVERT(nvarchar(10),ERROR_NUMBER()) + ' | ' + ERROR_MESSAGE();
		 ELSE 
		      SET @transactionmessage = 'A database level message error occurred on DeleteError.';
	  END CATCH
    END


-- Concatenate the messages
/*
NOTE: "The + (String Concatenation) operator behaves differently when it works with an empty, 
zero-length string than when it works with NULL, or unknown values. A zero-length 
character string can be specified as two single quotation marks without any characters 
inside the quotation marks. A zero-length binary string can be specified as 0x without 
any byte values specified in the hexadecimal constant. Concatenating a zero-length string 
always concatenates the two specified strings. When you work with strings with a null value, 
the result of the concatenation depends on the session settings. Just like arithmetic 
operations that are performed on null values, when a null value is added to a known 
value the result is typically an unknown value, a string concatenation operation that 
is performed with a null value should also produce a null result." 
*/
    IF (@message = '' OR @message IS NULL) SET @message = ' ';
    IF (@transactionmessage <> '')         SET @message = @transactionmessage;
    IF (@validationmessage <> '')          SET @message = @message + ' | ' + @validationmessage;
	IF (@recordnotexistmessage <> '')      SET @message = @message + ' | ' + @recordnotexistmessage;
	IF (@nopermissionmessage <> '')        SET @message = @message + ' | ' + @nopermissionmessage;






END
GO
