"""Odśwież wygasłe miniaturki sxyprn z ich (żywych) stron post (bug 2026-06-10).

sxyprn/trafficdeposit thumbnaile są podpisane czasowo i ROTUJĄ (token wygasa po
~tygodniach → 404), ALE sama strona /post/<id>.html ŻYJE (200) i zawiera świeży
poster sceny w `og:image` / `<video poster=>` (post-id w ścieżce, current timestamp).
Search/listingi NIE re-surfaceują starych postów (0 overlap), więc jedyna droga to
pobranie per-post page.

Strategia: iteruj żywe sxyprn playback_sources, fetch post page, wyłuskaj og:image
(fresh signed thumbnail), UPDATE thumbnail_url. Wznawialne (--offset), idempotent.
Thumbnaile dalej rotują → odpalać periodycznie (scheduled job _job_refresh_sxyprn_thumbs).

Użycie (kontener worker):
  python scripts/refresh_sxyprn_thumbs.py [--limit N] [--offset M]
"""
from __future__ import annotations

import re
import sys
import time

from sqlalchemy import text

from app.db import session_scope
from app.extractors import browser_get

_OG_RE = re.compile(r"og:image[\"'][^>]*content=[\"']([^\"']+)", re.IGNORECASE)
_OG_RE2 = re.compile(r"content=[\"']([^\"']+)[\"'][^>]*property=[\"']og:image", re.IGNORECASE)
_POSTER_RE = re.compile(r"<video[^>]*poster=[\"']([^\"']+)", re.IGNORECASE)


def _fresh_thumb(page_url: str) -> str | None:
    """Pobierz post page → świeży poster (og:image / video poster). None gdy strona
    martwa (Post Not Found) albo brak postera."""
    try:
        html = browser_get(page_url, timeout=25).text
    except Exception:
        return None
    if "Post Not Found" in html:
        return None
    m = _OG_RE.search(html) or _OG_RE2.search(html) or _POSTER_RE.search(html)
    if not m:
        return None
    u = m.group(1).strip()
    if u.startswith("//"):
        u = "https:" + u
    if "trafficdeposit.com" not in u and "sxyprn" not in u:
        return None
    return u


def main() -> None:
    limit = 1_000_000
    offset = 0
    for i, a in enumerate(sys.argv):
        if a == "--limit" and i + 1 < len(sys.argv):
            limit = int(sys.argv[i + 1])
        if a == "--offset" and i + 1 < len(sys.argv):
            offset = int(sys.argv[i + 1])

    with session_scope() as s:
        rows = s.execute(
            text(
                "SELECT id, page_url FROM playback_sources "
                "WHERE origin='tube:sxyprncom' AND dead_at IS NULL "
                "ORDER BY id OFFSET :off LIMIT :lim"
            ).bindparams(off=offset, lim=limit)
        ).all()

    print(f"sxyprn sources to refresh: {len(rows)} (offset={offset})", flush=True)
    updated = 0
    dead = 0
    nothumb = 0
    for idx, (pbid, page_url) in enumerate(rows):
        thumb = _fresh_thumb(page_url)
        if thumb:
            with session_scope() as s:
                s.execute(
                    text("UPDATE playback_sources SET thumbnail_url=:t WHERE id=:i").bindparams(
                        t=thumb, i=pbid
                    )
                )
                s.commit()
            updated += 1
        else:
            nothumb += 1
        if (idx + 1) % 200 == 0:
            print(f"  {idx+1}/{len(rows)} updated={updated} no_thumb={nothumb}", flush=True)
        time.sleep(0.25)
    print(f"DONE refreshed={updated}/{len(rows)} no_thumb={nothumb}", flush=True)


if __name__ == "__main__":
    main()