/**
 * Meets 大塚 — https://meets.rinky.info/events
 *
 * rinky.info プラットフォーム。イベントは以下の構造:
 *   <div class="blog-entry event-wrap" event-date="YYYY-MM-DD">
 *     <h2><a href="/events/ID">タイトル</a></h2>
 *     <p class="act"><span>アーティスト</span></p>
 *     <p class="time">OPEN 18:30 / START 19:00</p>
 *     <span class="ticket-price__label">価格</span>
 *     <div class="image-bg" style="background-image: url(...)">
 */
import * as cheerio from "cheerio";
import type { Scraper, VenueMeta } from "./base";
import type { EventInput } from "~/lib/db.server";

export const venue: VenueMeta = {
  id: "meets-otsuka",
  name: "Meets 大塚",
  url: "https://meets.rinky.info",
  area: "大塚",
  capacity: 100,
};

function parseHtml(html: string): EventInput[] {
  const $ = cheerio.load(html);
  const events: EventInput[] = [];

  $("div.blog-entry.event-wrap").each((_, el) => {
    const $el = $(el);

    const date = $el.attr("event-date") ?? "";
    if (!date.match(/^\d{4}-\d{2}-\d{2}$/)) return;

    const $link = $el.find("h2 a").first();
    const title = $link.text().trim();
    if (!title) return;

    const detailPath = $link.attr("href") ?? null;
    const sourceUrl = detailPath ? `${venue.url}${detailPath}` : null;

    const artist = $el.find("p.act span").map((_, s) => $(s).text().trim()).get().join("、") || null;

    const timeText = $el.find("p.time").first().text();
    const openMatch = timeText.match(/OPEN\s*(\d{2}:\d{2})/i);
    const startMatch = timeText.match(/START\s*(\d{2}:\d{2})/i);

    const price = $el.find("span.ticket-price__label").first().text().trim() || null;

    const bgStyle = $el.find("div.image-bg").attr("style") ?? "";
    const imgMatch = bgStyle.match(/url\(["']?([^"')]+)["']?\)/);
    const imageUrl = imgMatch?.[1] ?? null;

    const ticketUrl =
      $el.find("a[href*='livepocket'], a[href*='eplus'], a[href*='pia'], a[href*='ticket']")
        .first().attr("href") ?? null;

    events.push({
      venue_id: venue.id,
      title,
      artist,
      date,
      open_time: openMatch?.[1] ?? null,
      start_time: startMatch?.[1] ?? null,
      price,
      ticket_url: ticketUrl,
      image_url: imageUrl,
      source_url: sourceUrl,
    });
  });

  return events;
}

export const scraper: Scraper = {
  venue,
  async scrape(): Promise<EventInput[]> {
    const now = new Date();
    const urls = [0, 1, 2].map((offset) => {
      const d = new Date(now.getFullYear(), now.getMonth() + offset, 1);
      const ym = `${d.getFullYear()}/${String(d.getMonth() + 1).padStart(2, "0")}`;
      return `https://meets.rinky.info/events?date=${encodeURIComponent(ym)}`;
    });

    const htmls = await Promise.all(
      urls.map((url) => fetch(url).then((r) => (r.ok ? r.text() : "")))
    );

    const seen = new Set<string>();
    return htmls.flatMap(parseHtml).filter((e) => {
      const key = `${e.date}|${e.title}`;
      if (seen.has(key)) return false;
      seen.add(key);
      return true;
    });
  },
};