import { pool } from "../async-lib/mod.ts";
import { encodeTitleURI } from "../scrapbox-userscript-std/dom.ts";
import type { Scrapbox } from "../scrapbox-jp%2Ftypes/userscript.ts";
declare const scrapbox: Scrapbox;

export interface SerializeOption {
  level?: number;
}
export const serialize = async (text: string, options?: SerializeOption): Promise<string> => {
  const lines = text.split("\n");
  
  const pooled = pool(
    5,
    lines,
    async (line) => {
      const title = line.match(/\[([^\[$!"#%&'()\*\+,\-\.\/\{\|\}<>_~][^\[\]]*)\]/)?.[1];
      if (!title) return line;
      
      const res = await fetch(
        `/api/pages/${scrapbox.Project.name}/${encodeTitleURI(title)}/text`
      );
      if (!res.ok) return line;
      
      const [headLine, ...rest] = (await res.text()).split("\n");
      return ["[/icons/hr.icon]", `[*** ${headLine}]`, ...rest].join("\n");
    },
  );
  
  return (await Promise.all([...pooled]))
    .map((result, i) => {
      if (result.success) return result.value;
      
      // 失敗したら元の文字列を返す
      console.warn(result.reason);
      return lines[i];
    })
    .join("\n");
};