Описание изменений

backend/migrations/fix_function.sql

@@ -0,0 +1,32 @@
+DROP FUNCTION IF EXISTS find_or_create_user_by_identity;
+
+CREATE OR REPLACE FUNCTION find_or_create_user_by_identity(
+    identity_type_param VARCHAR(20),
+    identity_value_param VARCHAR(255)
+) 
+RETURNS TABLE(user_id INTEGER, is_new BOOLEAN) 
+AS $$
+DECLARE
+    existing_user_id INTEGER;
+    new_user_id INTEGER;
+BEGIN
+    SELECT ui.user_id INTO existing_user_id
+    FROM user_identities ui
+    WHERE ui.identity_type = identity_type_param 
+      AND ui.identity_value = identity_value_param;
+    
+    IF existing_user_id IS NOT NULL THEN
+        RETURN QUERY SELECT existing_user_id::INTEGER, FALSE::BOOLEAN;
+        RETURN;
+    END IF;
+    
+    INSERT INTO users (created_at) 
+    VALUES (NOW()) 
+    RETURNING id INTO new_user_id;
+    
+    INSERT INTO user_identities (user_id, identity_type, identity_value, created_at, verified)
+    VALUES (new_user_id, identity_type_param, identity_value_param, NOW(), TRUE);
+    
+    RETURN QUERY SELECT new_user_id::INTEGER, TRUE::BOOLEAN;
+END;
+$$ LANGUAGE plpgsql;