'use strict';

const SPINNER_FRAMES = ['⠙','⠹','⠸','⠼','⠴','⠦','⠧','⠇','⠏'];
const SPINNER_INTERVAL_MS = 80;
const SPINNER_INDENT = ' ';

function startSpinner(initialLabel) {
  let i = 0;
  let label = initialLabel;
  const timer = setInterval(() => {
    const frame = SPINNER_FRAMES[i % SPINNER_FRAMES.length];
    process.stdout.write(`\r${SPINNER_INDENT}${frame}${label}`);
    i += 1;
  }, SPINNER_INTERVAL_MS);
  return {
    timer,
    setLabel(nextLabel) {
      label = nextLabel || '';
    }
  };
}

function stopSpinner(spinner, finalText) {
  clearInterval(spinner.timer);
  const clear = '\r' + ' '.repeat(80) + '\r';
  process.stdout.write(clear + SPINNER_INDENT + finalText + '\n');
}

module.exports = { startSpinner, stopSpinner };