-- Criar tabela de mensagens no schema gpi CREATE TABLE IF NOT EXISTS gpi.messages ( id uuid DEFAULT uuid_generate_v4() PRIMARY KEY, organization_id uuid REFERENCES gpi.organizations(id) ON DELETE CASCADE, from_user_id uuid REFERENCES gpi.users(id) ON DELETE SET NULL, to_user_id uuid REFERENCES gpi.users(id) ON DELETE SET NULL, message text NOT NULL, is_read boolean DEFAULT false, read_at timestamp with time zone, is_archived boolean DEFAULT false, is_deleted_by_recipient boolean DEFAULT false, created_at timestamp with time zone DEFAULT now(), updated_at timestamp with time zone DEFAULT now() ); -- Permissões para as roles do Supabase GRANT ALL ON gpi.messages TO postgres, anon, authenticated, service_role;