More queries forrefresh token sqlc files.

sql/queries/refresh_tokens.sql

@@ -11,10 +11,31 @@ WHERE token_hash = $1 LIMIT 1;
 SELECT * FROM refresh_tokens
 WHERE user_id = $1;
 
+-- name: CountUserRefreshTokens :one
+SELECT count(*) FROM refresh_tokens
+WHERE user_id = $1;
+
+-- name: GetValidRefreshToken :one
+SELECT user_id, token_hash
+FROM refresh_tokens
+WHERE token_hash = $1 
+  AND expires_at > NOW()
+LIMIT 1;
+
 -- name: DeleteRefreshToken :exec
 DELETE FROM refresh_tokens
-WHERE token_hash = $1;
+WHERE token_hash = $1 and user_id = $2;
 
 -- name: DeleteAllUserRefreshTokens :exec
 DELETE FROM refresh_tokens
 WHERE user_id = $1;
+
+-- name: DeleteOldestRefreshToken :exec
+DELETE FROM refresh_tokens
+WHERE id = (
+    SELECT id
+    FROM refresh_tokens rt
+    WHERE rt.user_id = $1
+    ORDER BY rt.created_at ASC
+    LIMIT 1
+);