--liquibase formatted sql
-- PANELS · core · RPC infrastructure (envelope helpers)

--changeset panel:core-006a-rpc-generic-messages endDelimiter:; splitStatements:true
CREATE OR REPLACE FUNCTION core.rpc_generic_messages()
RETURNS text[]
LANGUAGE sql
IMMUTABLE
AS $$
  SELECT ARRAY[
    'OK', 'Error', 'ERROR', 'Operación exitosa', 'Operacion exitosa',
    'Algo salió mal', 'Algo salio mal', 'Error interno', 'Error interno del servidor'
  ]::text[];
$$;

--changeset panel:core-006b-rpc-assert-message endDelimiter:; splitStatements:true
CREATE OR REPLACE FUNCTION core.rpc_assert_message(p_message text)
RETURNS void
LANGUAGE plpgsql
IMMUTABLE
AS $$
BEGIN
  IF p_message IS NULL OR btrim(p_message) = '' THEN
    RAISE EXCEPTION 'RPC message must not be empty';
  END IF;
  IF p_message = ANY (core.rpc_generic_messages()) THEN
    RAISE EXCEPTION 'RPC message is too generic: %', p_message;
  END IF;
END;
$$;

--changeset panel:core-006c-rpc-ok endDelimiter:; splitStatements:true
CREATE OR REPLACE FUNCTION core.rpc_ok(
  p_data jsonb,
  p_message text,
  p_ctx jsonb DEFAULT '{}'::jsonb
)
RETURNS jsonb
LANGUAGE plpgsql
IMMUTABLE
AS $$
BEGIN
  PERFORM core.rpc_assert_message(p_message);
  RETURN jsonb_build_object(
    'ok', true,
    'code', 'OK',
    'layer', 'db',
    'message', p_message,
    'context', COALESCE(p_ctx, '{}'::jsonb),
    'data', p_data,
    'errors', NULL
  );
END;
$$;

--changeset panel:core-006d-rpc-created endDelimiter:; splitStatements:true
CREATE OR REPLACE FUNCTION core.rpc_created(
  p_data jsonb,
  p_message text,
  p_ctx jsonb DEFAULT '{}'::jsonb
)
RETURNS jsonb
LANGUAGE plpgsql
IMMUTABLE
AS $$
BEGIN
  PERFORM core.rpc_assert_message(p_message);
  RETURN jsonb_build_object(
    'ok', true,
    'code', 'CREATED',
    'layer', 'db',
    'message', p_message,
    'context', COALESCE(p_ctx, '{}'::jsonb),
    'data', p_data,
    'errors', NULL
  );
END;
$$;

--changeset panel:core-006e-rpc-err endDelimiter:; splitStatements:true
CREATE OR REPLACE FUNCTION core.rpc_err(
  p_code text,
  p_message text,
  p_ctx jsonb DEFAULT '{}'::jsonb,
  p_errors jsonb DEFAULT NULL
)
RETURNS jsonb
LANGUAGE plpgsql
IMMUTABLE
AS $$
BEGIN
  PERFORM core.rpc_assert_message(p_message);
  RETURN jsonb_build_object(
    'ok', false,
    'code', p_code,
    'layer', 'db',
    'message', p_message,
    'context', COALESCE(p_ctx, '{}'::jsonb),
    'data', NULL,
    'errors', p_errors
  );
END;
$$;

--changeset panel:core-006f-rpc-map-exception endDelimiter:; splitStatements:true
CREATE OR REPLACE FUNCTION core.rpc_from_exception(
  p_fn text,
  p_sqlstate text,
  p_message text,
  p_detail text DEFAULT NULL
)
RETURNS jsonb
LANGUAGE plpgsql
IMMUTABLE
AS $$
DECLARE
  v_code text := 'INTERNAL';
  v_msg text;
  v_ctx jsonb := jsonb_build_object('fn', p_fn, 'sqlstate', p_sqlstate);
BEGIN
  IF p_sqlstate = '23505' THEN
    v_code := 'CONFLICT';
    v_msg := format('CONFLICT en %s: %s', p_fn, COALESCE(p_detail, p_message));
  ELSIF p_sqlstate = '23503' THEN
    v_code := 'VALIDATION';
    v_msg := format('Referencia inválida en %s: %s', p_fn, COALESCE(p_detail, p_message));
  ELSIF p_sqlstate = '23514' THEN
    v_code := 'VALIDATION';
    v_msg := format('Restricción de valor en %s: %s', p_fn, COALESCE(p_detail, p_message));
  ELSIF p_sqlstate = '40P01' THEN
    v_code := 'CONFLICT';
    v_msg := format('Deadlock en %s: otra operación modificó los mismos registros, intente de nuevo', p_fn);
  ELSE
    v_code := 'INTERNAL';
    v_msg := format('Error inesperado en %s (sqlstate=%s): %s', p_fn, p_sqlstate, p_message);
  END IF;
  RETURN core.rpc_err(v_code, v_msg, v_ctx);
END;
$$;

--changeset panel:core-006g-rpc-grants endDelimiter:; splitStatements:true
GRANT EXECUTE ON FUNCTION core.rpc_generic_messages() TO panels_core_app;
GRANT EXECUTE ON FUNCTION core.rpc_assert_message(text) TO panels_core_app;
GRANT EXECUTE ON FUNCTION core.rpc_ok(jsonb, text, jsonb) TO panels_core_app;
GRANT EXECUTE ON FUNCTION core.rpc_created(jsonb, text, jsonb) TO panels_core_app;
GRANT EXECUTE ON FUNCTION core.rpc_err(text, text, jsonb, jsonb) TO panels_core_app;
GRANT EXECUTE ON FUNCTION core.rpc_from_exception(text, text, text, text) TO panels_core_app;