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import type { JSONContent } from "@tiptap/core";
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const DESCRIPTION_MIN_BREAK = 150;
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const DESCRIPTION_MAX_LENGTH = 160;
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const DESCRIPTION_ELLIPSIS = "...";
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export function extractSiteDescription(content: JSONContent): string | null {
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  const text = collapseWhitespace(collectText(content).join(" "));
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  if (!text) return null;
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  if (text.length <= DESCRIPTION_MAX_LENGTH) return text;
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  const window = text.slice(0, DESCRIPTION_MAX_LENGTH);
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  const breakAt = window.search(/\s+\S*$/);
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  if (breakAt >= DESCRIPTION_MIN_BREAK) {
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    return `${window.slice(0, breakAt).trimEnd()}${DESCRIPTION_ELLIPSIS}`;
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  }
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  return `${text.slice(0, DESCRIPTION_MAX_LENGTH - DESCRIPTION_ELLIPSIS.length).trimEnd()}${DESCRIPTION_ELLIPSIS}`;
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}
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function collectText(node: JSONContent): string[] {
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  if (!node || typeof node !== "object") return [];
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  const chunks: string[] = [];
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  if (typeof node.text === "string") chunks.push(node.text);
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  if (node.type === "hardBreak") chunks.push(" ");
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  if (Array.isArray(node.content)) {
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    for (const child of node.content) chunks.push(...collectText(child));
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  }
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  return chunks;
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}
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function collapseWhitespace(value: string): string {
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  return value.replace(/\s+/g, " ").trim();
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}