#!/usr/bin/env node

import {
  createPageSession,
  dismissCommonOverlays,
  fail,
  gotoListing,
  sleep,
} from "./real-estate-photo-common.js";

function parseAddress(rawAddress) {
  const address = String(rawAddress || "").trim();
  if (!address) {
    fail("Missing address.");
  }
  return address;
}

function buildSearchUrl(address) {
  return `https://www.har.com/search/?q=${encodeURIComponent(address)}`;
}

function buildAddressTokens(address) {
  return address
    .toLowerCase()
    .replace(/[^a-z0-9\s]/g, " ")
    .split(/\s+/)
    .filter(Boolean)
    .filter((token) => !new Set(["tx", "dr", "st", "rd", "ave", "blvd", "ct", "ln", "cir"]).has(token));
}

function normalizeListingUrl(url) {
  try {
    const parsed = new URL(url);
    parsed.search = "";
    parsed.hash = "";
    return parsed.toString();
  } catch {
    return null;
  }
}

async function collectListingUrl(page) {
  return page.evaluate(() => {
    const toAbsolute = (href) => {
      try {
        return new URL(href, location.href).toString();
      } catch {
        return null;
      }
    };

    const candidates = [];
    for (const anchor of document.querySelectorAll('a[href*="/homedetail/"]')) {
      const href = anchor.getAttribute("href");
      if (!href) continue;
      const absolute = toAbsolute(href);
      if (!absolute) continue;
      const text = (anchor.textContent || "").replace(/\s+/g, " ").trim();
      const parentText = (anchor.parentElement?.textContent || "").replace(/\s+/g, " ").trim();
      candidates.push({
        url: absolute,
        text,
        parentText,
      });
    }

    const unique = [];
    for (const candidate of candidates) {
      if (!unique.some((item) => item.url === candidate.url)) unique.push(candidate);
    }
    return unique;
  });
}

async function main() {
  const address = parseAddress(process.argv[2]);
  const searchUrl = buildSearchUrl(address);
  const { context, page } = await createPageSession({ headless: process.env.HEADLESS !== "false" });

  try {
    const attempts = [`Opened HAR search URL: ${searchUrl}`];
    await gotoListing(page, searchUrl, 2500);
    await dismissCommonOverlays(page);
    await sleep(1500);

    let listingUrl = null;
    const addressTokens = buildAddressTokens(address);
    if (page.url().includes("/homedetail/")) {
      listingUrl = normalizeListingUrl(page.url());
      attempts.push("HAR search URL resolved directly to a property page.");
    } else {
      const discovered = await collectListingUrl(page);
      const scored = discovered
        .map((candidate) => {
          const haystack = `${candidate.url} ${candidate.text} ${candidate.parentText}`.toLowerCase();
          const score = addressTokens.reduce(
            (total, token) => total + (haystack.includes(token) ? 1 : 0),
            0
          );
          return { ...candidate, score };
        })
        .sort((a, b) => b.score - a.score);

      if (scored[0] && scored[0].score >= Math.min(3, addressTokens.length)) {
        listingUrl = normalizeListingUrl(scored[0].url);
        attempts.push(`HAR search results exposed a matching homedetail link with score ${scored[0].score}.`);
      } else {
        attempts.push("HAR discovery did not expose a confident homedetail match for this address.");
      }
    }

    process.stdout.write(
      `${JSON.stringify(
        {
          source: "har",
          address,
          searchUrl,
          finalUrl: page.url(),
          title: await page.title(),
          listingUrl,
          attempts,
        },
        null,
        2
      )}\n`
    );
    await context.close();
  } catch (error) {
    try {
      await context.close();
    } catch {
      // Ignore close errors after the primary failure.
    }
    fail("HAR discovery failed.", error instanceof Error ? error.message : String(error));
  }
}

main();