/** Validate the only mouse reports the dashboard may relay to its PTY. */

// SGR wheel reports use button codes 64/65 plus optional Shift/Alt/Ctrl bits.
// Keep coordinates bounded so arbitrary control text never reaches the PTY.
const SGR_WHEEL_REPORT = /^\x1b\[<(\d{1,2});(\d{1,4});(\d{1,4})M$/;
const MIN_WHEEL_BUTTON = 64;
const MAX_WHEEL_BUTTON = 95;
const MAX_TERMINAL_COORDINATE = 9_999;

/** Return whether ``data`` is one bounded SGR wheel report from xterm. */
export function isSgrWheelReport(data: string): boolean {
  const match = SGR_WHEEL_REPORT.exec(data);
  if (!match) return false;

  const button = Number(match[1]);
  const column = Number(match[2]);
  const row = Number(match[3]);
  return (
    button >= MIN_WHEEL_BUTTON &&
    button <= MAX_WHEEL_BUTTON &&
    (button & 3) <= 1 &&
    column >= 1 &&
    column <= MAX_TERMINAL_COORDINATE &&
    row >= 1 &&
    row <= MAX_TERMINAL_COORDINATE
  );
}