"""One-shot: re-extract titles dla freshporno scen z pre-fix truncation bug.

Tło: `meta_content` regex sprzed 2026-05-20 obcinał title na pierwszym apostrofie
(`<meta content="She's So Insatiable" />` → `She`). Fix wszedł 2026-05-20,
ale scenes scrapped przed fixem mają broken titles w DB. Delta-ingest skipuje
je przez external_id match — bez backfill nigdy się nie naprawią.

Bug-report `2fbf1c73` 2026-05-23 (kontekstowo, brak BE scen): część
brakujących Brazzers Exxtra scen to faktycznie pre-fix victims które nie
zmergowały z canonical TPDB record bo title się nie zgadzał.

Heurystyka:
  - origin = tube:freshpornoorg
  - created_at < 2026-05-20 (pre-fix)
  - title length < 15
  - slug freshporno URL ma więcej tokenów niż title (sygnał obcięcia)

Idempotent: po update tylko jeśli nowy title różni się od bieżącego.
"""
from __future__ import annotations

import logging
import re
from datetime import UTC, datetime

import httpx
from sqlalchemy import select

from app.connectors.direct_scrapers._browse_base import meta_content
from app.db import session_scope
from app.models import Scene
from app.models.playback_source import PlaybackSource
from app.normalize.text import normalize, slugify

log = logging.getLogger(__name__)

CUTOFF_DATE = datetime(2026, 5, 20, tzinfo=UTC)
TITLE_MAX_LEN = 15
USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/140.0.0.0"


def _slug_token_count(url: str) -> int:
    """Liczy ile tokenów ma URL slug (np. `/videos/girls-night-gets-girth/` → 4)."""
    m = re.search(r"/videos/([^/]+)/?", url)
    if not m:
        return 0
    return sum(1 for tok in m.group(1).split("-") if tok and tok != "s")


def main() -> int:
    logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")

    with session_scope() as session:
        rows = session.execute(
            select(Scene.id, Scene.title, PlaybackSource.page_url)
            .join(PlaybackSource, PlaybackSource.scene_id == Scene.id)
            .where(PlaybackSource.origin == "tube:freshpornoorg")
            .where(Scene.created_at < CUTOFF_DATE)
        ).all()
        log.info("pre-fix freshporno scenes: %d", len(rows))

    # Filter: krótki title + slug ma więcej tokenów niż title (sygnał obcięcia)
    candidates = []
    for scene_id, title, page_url in rows:
        if title is None:
            continue
        if len(title) >= TITLE_MAX_LEN:
            continue
        title_tokens = len([t for t in title.split() if t])
        slug_tokens = _slug_token_count(page_url)
        if slug_tokens <= title_tokens:
            continue  # title już ma tyle samo/więcej tokenów co slug — pewnie legit krótki
        candidates.append((scene_id, title, page_url))

    log.info("candidates with slug>>title heurystyka: %d", len(candidates))

    client = httpx.Client(
        timeout=15.0,
        follow_redirects=True,
        headers={"User-Agent": USER_AGENT},
    )

    updated = 0
    skipped = 0
    errors = 0

    for scene_id, old_title, page_url in candidates:
        try:
            r = client.get(page_url)
            if r.status_code != 200:
                errors += 1
                continue
            new_title = meta_content(r.text, property="og:title")
            if not new_title:
                m = re.search(r"<h1[^>]*itemprop=\"name\"[^>]*>([^<]+)</h1>", r.text)
                if m:
                    new_title = m.group(1).strip()
            if not new_title or new_title == old_title:
                skipped += 1
                continue
            if len(new_title) < len(old_title):
                skipped += 1
                continue

            with session_scope() as s:
                scene = s.get(Scene, scene_id)
                if scene is None:
                    continue
                log.info("update %s: %r -> %r", scene_id, scene.title, new_title)
                scene.title = new_title
                scene.title_normalized = normalize(new_title)
                scene.slug = slugify(new_title)[:200]
            updated += 1
            if updated % 25 == 0:
                log.info(
                    "progress: updated=%d skipped=%d errors=%d (%d/%d)",
                    updated, skipped, errors,
                    updated + skipped + errors, len(candidates),
                )
        except Exception as e:
            errors += 1
            if errors <= 5:
                log.warning("scene=%s url=%s failed: %s", scene_id, page_url, e)

    client.close()
    log.info(
        "DONE: candidates=%d updated=%d skipped=%d errors=%d",
        len(candidates), updated, skipped, errors,
    )
    return 0


if __name__ == "__main__":
    raise SystemExit(main())