Function drawPatternBackground

quote/generate.js:140–160

(canvas, colorOne, colorTwo, patternImage, lumOne, lumTwo)

    s = Math.min(1, Math.max(s * 1.8, 0.35));
  }
  return {
    center: hslToHex(h, s, 0.8),
    edge: hslToHex(h, s, 0.62),
    patternAlpha: 0.18,
  };
}

// ── Message normalisation ──────────────────────────────────────────────
function normalizeMessage(message) {
  if (!message.from) {
    message.from = { id: 0 };
  }
  if (!message.from.photo) {
    message.from.photo = {};
  }
  if (message.from.name !== false && !message.from.name && (message.from.first_name || message.from.last_name)) {
    message.from.name = [message.from.first_name, message.from.last_name]
      .filter(Boolean)
      .join(" ");
  }
  if (message.replyMessage) {
    if (!message.replyMessage.chatId) {
      message.replyMessage.chatId = message.from.id || 0;
    }