Refactor repository methods to async and update credential logic

Database/Database.Core/scripts/01-schema/schema.sql

@@ -164,7 +164,13 @@ CREATE TABLE UserCredential -- delete credentials when user account is deleted
     Hash NVARCHAR(MAX) NOT NULL,
     -- uses argon2
 
-    Timer ROWVERSION,
+    IsRevoked BIT NOT NULL
+        CONSTRAINT DF_UserCredential_IsRevoked DEFAULT 0,
+
+    RevokedAt DATETIME NULL,
+
+    Timer     ROWVERSION,
+
 
     CONSTRAINT PK_UserCredential
         PRIMARY KEY (UserCredentialID),
@@ -173,9 +179,6 @@ CREATE TABLE UserCredential -- delete credentials when user account is deleted
         FOREIGN KEY (UserAccountID)
         REFERENCES UserAccount(UserAccountID)
         ON DELETE CASCADE,
-
-    CONSTRAINT AK_UserCredential_UserAccountID
-        UNIQUE (UserAccountID)
 );
 
 CREATE NONCLUSTERED INDEX IX_UserCredential_UserAccount

Database/Database.Core/scripts/03-crud/02-UserCredential/USP_AddUserCredential.sql

@@ -1,6 +1,6 @@
-CREATE OR ALTER PROCEDURE dbo.USP_AddUserCredential(
-    @UserAccountId uniqueidentifier,
-    @Hash nvarchar(max)
+CREATE OR ALTER PROCEDURE dbo.USP_AddUpdateUserCredential(
+    @UserAccountId UNIQUEIDENTIFIER,
+    @Hash NVARCHAR(MAX)
 )
 AS
 BEGIN
@@ -16,14 +16,14 @@ BEGIN
     )
         THROW 50001, 'UserAccountID does not exist.', 1;
     
-    IF EXISTS (
-        SELECT 1 
-        FROM dbo.UserCredential
-        WHERE UserAccountID = @UserAccountId
-    )
-        THROW 50002, 'UserCredential for this UserAccountID already exists.', 1;
-    
 
+    -- invalidate old credentials
+    UPDATE dbo.UserCredential 
+    SET IsRevoked = 1,
+        RevokedAt = GETDATE()
+    WHERE UserAccountId = @UserAccountId
+      AND IsRevoked = 0;
+      
     INSERT INTO dbo.UserCredential
         (UserAccountId, Hash)
     VALUES 

Database/Database.Core/scripts/03-crud/02-UserCredential/USP_GetUserCredentialByUserAccountId.sql

@@ -0,0 +1,18 @@
+CREATE OR ALTER PROCEDURE dbo.USP_GetUserCredentialByUserAccountId(
+    @UserAccountId UNIQUEIDENTIFIER
+)
+AS
+BEGIN
+    SET NOCOUNT ON;
+    SET XACT_ABORT ON;
+
+    SELECT 
+        UserCredentialId,
+        UserAccountId,
+        Hash,
+        IsRevoked,
+        CreatedAt,
+        RevokedAt
+    FROM dbo.UserCredential
+    WHERE UserAccountId = @UserAccountId AND IsRevoked = 0;
+END;