Improve profiles trigger

sql/34_modify_firstname_from_email.sql

@@ -0,0 +1,56 @@
+-- Modify the handle_new_user trigger to extract first_name from email if not provided
+CREATE OR REPLACE FUNCTION
+  public.handle_new_user()
+  RETURNS TRIGGER AS
+  $$
+  DECLARE 
+    name TEXT;
+    first_name TEXT;
+    last_name TEXT;
+    is_temp BOOLEAN;
+    email_prefix TEXT;
+  BEGIN   
+  -- Extract first_name and last_name from metadata
+  first_name = new.raw_user_meta_data ->> 'first_name';
+  last_name = new.raw_user_meta_data ->> 'last_name';
+  
+  -- If first_name is not provided, extract it from email (part before @)
+  IF first_name IS NULL OR first_name = '' THEN
+    email_prefix = SPLIT_PART(new.email, '@', 1);
+    first_name = email_prefix;
+  END IF;
+  
+  -- Determine the full name
+  IF new.raw_user_meta_data ->> 'name' IS NOT NULL
+  THEN
+    name = new.raw_user_meta_data ->> 'name';
+    -- If name is provided but not first/last, try to split it
+    IF first_name IS NULL AND last_name IS NULL AND name IS NOT NULL THEN
+      first_name = SPLIT_PART(name, ' ', 1);
+      IF ARRAY_LENGTH(STRING_TO_ARRAY(name, ' '), 1) > 1 THEN
+        last_name = SUBSTRING(name FROM LENGTH(SPLIT_PART(name, ' ', 1)) + 2);
+      END IF;
+    END IF;
+  ELSE
+    name = CONCAT(first_name, ' ', last_name);
+  END IF;
+
+  -- Check if the role is 'invited_user' in app_metadata
+  IF COALESCE(new.raw_user_meta_data->>'role', '') = 'invited_user'
+  THEN
+    is_temp = TRUE;
+  ELSE
+    is_temp = FALSE;
+  END IF;
+
+  INSERT INTO public.profiles (id, name, email, avatar_url, first_name, last_name, is_temporary)
+  VALUES (new.id, name, new.email, new.raw_user_meta_data ->> 'avatar_url', first_name, last_name, is_temp);
+  
+  RETURN new;
+END;
+  $$ LANGUAGE plpgsql SECURITY DEFINER;
+
+-- Add comment to document the change
+COMMENT ON FUNCTION public.handle_new_user() IS 
+    'Trigger function that creates a profile when a new user is created. Sets is_temporary=true for users with app_metadata.role=invited_user. Extracts first_name from email prefix (before @) if not provided in metadata.';
+