// BidaAngMamamayan — live "Who he is" bio, sourced from the Wikipedia article.
//
// The front page's "Who he is" box used to be a hard-coded paragraph (which
// drifted: it said "Francis 'Bam' Tan Aquino IV" and hand-picked a couple of
// facts). Daniel (2026-09-16): source it from the LIVE Wikipedia article,
// link to it, and keep it updated daily.
//
// How it stays fresh without slowing page loads:
//   * refreshBio() is called by the crawl tick (scripts/cron-crawl every 15
//     min). It fetches the article's intro via the Wikipedia API and upserts
//     a single doc in the `bio` collection. That is well over "daily".
//   * getBio() (used by /api/bio on page load) only READS that cached doc —
//     it never calls Wikipedia, so a page load costs zero external requests
//     and a Wikipedia outage can't break the site.
//   * If the cache is empty or stale-but-unrefreshable, getBio() falls back to
//     a short, accurate static blurb so the box is never blank.
//
// Wikipedia API: action=query, prop=extracts, exintro, explaintext,
// titles="Bam Aquino", redirects=1. Requires a descriptive User-Agent
// (Wikipedia blocks the default Node UA).

import { getCollections } from "./db.js";

const ARTICLE_TITLE = "Bam Aquino";
const WIKI_API = "https://en.wikipedia.org/w/api.php";
const WIKI_LINK = "https://en.wikipedia.org/wiki/Bam_Aquino";
const UA = "BamaDeskBot/1.0 (bidaangmamamayan.com; contact danieldiaz@boyemma.com)";

// Fallback blurb — used ONLY when the live cache is unavailable. Kept short
// and accurate; it is a last resort, not the normal path.
const FALLBACK_TEXT =
  'Paolo Benigno "Bam" Aguirre Aquino IV is a Filipino politician and media ' +
  "personality who has served as a senator of the Philippines since 2025. He " +
  "is the first gamer to reach the Philippine Senate — a runner-up in the " +
  "2025 PalaPinas esports championship — and has made the fight for college " +
  "students, scholarships, and fair electricity his legislative signature.";

export async function refreshBio() {
  const { bio } = await getCollections();
  const params = new URLSearchParams({
    action: "query",
    prop: "extracts",
    exintro: "1",
    explaintext: "1",
    titles: ARTICLE_TITLE,
    format: "json",
    redirects: "1",
  });
  const res = await fetch(`${WIKI_API}?${params}`, {
    headers: { "User-Agent": UA, Accept: "application/json" },
    signal: AbortSignal.timeout(15000),
  });
  if (!res.ok) throw new Error(`wiki ${res.status}`);
  const j = await res.json();
  const page = j && j.query && j.query.pages
    ? Object.values(j.query.pages)[0]
    : null;
  const text = (page && page.extract ? page.extract : "").trim();
  if (!text) throw new Error("empty intro");
  // Keep only the lead section (first few paragraphs) — the box is a blurb,
  // not the whole article. The full text is one click away via the link.
  const paragraphs = text.split(/\n\n+/).map((p) => p.trim()).filter(Boolean);
  const lead = paragraphs.slice(0, 3).join(" ");
  await bio.updateOne(
    { _id: "primary" },
    { $set: { _id: "primary", text: lead, full: text, url: WIKI_LINK, updatedAt: new Date() } },
    { upsert: true }
  );
  return { ok: true, text: lead, updatedAt: new Date() };
}

export async function getBio() {
  try {
    const { bio } = await getCollections();
    const row = await bio.findOne({ _id: "primary" });
    if (row && row.text) {
      return { ok: true, text: row.text, url: row.url || WIKI_LINK, updatedAt: row.updatedAt || null, source: "Wikipedia" };
    }
  } catch {
    /* fall through to the static blurb */
  }
  return { ok: true, text: FALLBACK_TEXT, url: WIKI_LINK, updatedAt: null, source: "fallback" };
}