#!/usr/bin/env python3
"""
enrichment_worker.py — 24/7 background enrichment for PGŽ Sport
Author: Damir Radulić (damir@rinet.one) / dradulic@outlook.com
Date:   2026-05-04
Version: 1.0.0

Polls pgz_sport.clanovi / klubovi / savezi for under-enriched rows, then
calls the live HTTP endpoints (POST /sport/api/v2/enrich/{kind}/{id} and
.../apply) so every row goes through the same pipeline (and audit log)
that the UI uses. This avoids forking the enrichment logic.

Selection rules (per cycle):
  - sportas: clanovi rows missing profile_url AND (source IN ('hns_semafor','manual')
             OR vanjski_id ? 'hns_comet') ORDER BY random() LIMIT 25
  - klub:    klubovi rows whose metadata.enriched_at is NULL ORDER BY random() LIMIT 10
  - savez:   savezi  rows whose metadata.enriched_at is NULL ORDER BY random() LIMIT 5

Sleep 300 s between cycles (configurable via ENRICHER_SLEEP env).

Heartbeat to redis (cc:pgz-enricher:heartbeat) and log every cycle to
/opt/pgz-sport/_logs/enrichment_worker.log.
"""
from __future__ import annotations
import json
import os
import random
import sys
import time
import urllib.parse
import urllib.request
from datetime import datetime, timezone

import psycopg2
import psycopg2.extras

API_BASE = os.environ.get('PGZ_API_BASE', 'http://localhost:8095')
SLEEP_S  = int(os.environ.get('ENRICHER_SLEEP', '300'))
DRY      = os.environ.get('ENRICHER_DRY', '0') == '1'
USER_HDR = os.environ.get('ENRICHER_USER', 'enricher@pgz.local')

LOG_PATHS = [
    '/var/log/pgz-sport-enricher.log',
    '/opt/pgz-sport/_logs/enrichment_worker.log',
]
CONFIDENCE_MIN  = float(os.environ.get('ENRICHER_CONFIDENCE', '0.7'))
COVERAGE_MAX    = int(os.environ.get('ENRICHER_COVERAGE_MAX', '70'))

_pgh = os.environ.get('PG_HOST', '10.10.0.2')
_pgp = int(os.environ.get('PG_PORT', '6432'))
if _pgh in ('localhost', '127.0.0.1'):
    _pgh = os.environ.get('DB_HOST', '10.10.0.2')
    _pgp = int(os.environ.get('DB_PORT', '6432'))
DB = dict(host=_pgh, port=_pgp,
          dbname=os.environ.get('PG_DB', 'rinet_v3'),
          user=os.environ.get('PG_USER', 'rinet'),
          password=os.environ.get('PG_PASS', 'R1net2026!SecureDB#v7'))


def _log(msg: str) -> None:
    line = f"{datetime.now(timezone.utc).isoformat()}Z {msg}"
    print(line, flush=True)
    for p in LOG_PATHS:
        try:
            os.makedirs(os.path.dirname(p), exist_ok=True)
            with open(p, 'a') as f:
                f.write(line + "\n")
        except Exception:
            pass


def _heartbeat() -> None:
    try:
        import redis
        r = redis.Redis(host=os.environ.get('REDIS_HOST', 'localhost'),
                        port=int(os.environ.get('REDIS_PORT', '6379')),
                        password=os.environ.get('REDIS_PASS', None))
        r.set('cc:pgz-enricher:heartbeat', str(int(time.time())))
    except Exception:
        pass


def _db():
    c = psycopg2.connect(**DB); c.autocommit = True; return c


# Coverage = (filled key fields) / (total key fields) * 100. Keep these in sync
# with enrich_router.enrich_preview() which surfaces the same scores in the UI.
_KLUB_KEYS = ('oib','sport','grad','predsjednik','tajnik','web','email','telefon',
              'sjediste','godina_osnutka','ciljevi','opis_djelatnosti')
_SAVEZ_KEYS = ('oib','sport','predsjednik','tajnik','email','telefon','web',
               'adresa','godina_osnutka')
# Coverage for sportas — fields the user actually wants populated.
_SPORTAS_KEYS = ('sport','profile_url','slika_url','hns_igrac_id','biografija',
                 'datum_rodenja','mjesto_rodenja','broj_dresa')


def _coverage_expr(table_keys: tuple[str, ...]) -> str:
    """Postgres expression that returns 0..100 coverage % for the row."""
    parts = []
    for k in table_keys:
        parts.append(f"(CASE WHEN {k} IS NOT NULL AND ({k}::text) <> '' THEN 1 ELSE 0 END)")
    total = len(table_keys)
    return f"((({' + '.join(parts)})::numeric * 100) / {total})"


def _pick_sportas(limit: int = 50) -> list[int]:
    """Athletes with coverage<COVERAGE_MAX, randomly ordered."""
    cov = _coverage_expr(_SPORTAS_KEYS)
    sql = f"""
      SELECT id FROM pgz_sport.clanovi
      WHERE aktivan = TRUE
        AND {cov} < %s
        AND (
              source IN ('hns_semafor','hns_family','manual','godisnjak')
              OR jsonb_exists(vanjski_id, 'hns_comet')
              OR (source_url ILIKE '%%semafor.hns.family%%')
              OR profile_url ILIKE '%%semafor.hns.family%%'
        )
        AND ((metadata->>'enriched_at') IS NULL
             OR (metadata->>'enriched_at')::timestamptz < now() - interval '7 days')
      ORDER BY random()
      LIMIT %s
    """
    with _db() as c, c.cursor() as cur:
        cur.execute(sql, (COVERAGE_MAX, limit))
        return [r[0] for r in cur.fetchall()]


def _pick_klub(limit: int = 50) -> list[int]:
    cov = _coverage_expr(_KLUB_KEYS)
    sql = f"""
      SELECT id FROM pgz_sport.klubovi
      WHERE aktivan = TRUE
        AND {cov} < %s
        AND ((metadata->>'enriched_at') IS NULL
             OR (metadata->>'enriched_at')::timestamptz < now() - interval '14 days')
      ORDER BY random()
      LIMIT %s
    """
    with _db() as c, c.cursor() as cur:
        cur.execute(sql, (COVERAGE_MAX, limit))
        return [r[0] for r in cur.fetchall()]


def _pick_savez(limit: int = 50) -> list[int]:
    cov = _coverage_expr(_SAVEZ_KEYS)
    sql = f"""
      SELECT id FROM pgz_sport.savezi
      WHERE {cov} < %s
        AND ((metadata->>'enriched_at') IS NULL
             OR (metadata->>'enriched_at')::timestamptz < now() - interval '14 days')
      ORDER BY random()
      LIMIT %s
    """
    with _db() as c, c.cursor() as cur:
        cur.execute(sql, (COVERAGE_MAX, limit))
        return [r[0] for r in cur.fetchall()]


def _http_post(path: str, body: dict | None = None) -> dict | None:
    url = API_BASE.rstrip('/') + path
    data = json.dumps(body or {}).encode('utf-8')
    req = urllib.request.Request(
        url, data=data, method='POST',
        headers={'Content-Type': 'application/json',
                 'X-User-Email': USER_HDR})
    try:
        with urllib.request.urlopen(req, timeout=60) as r:
            return json.loads(r.read().decode('utf-8'))
    except Exception as e:
        _log(f"POST {path} failed: {type(e).__name__}: {e}")
        return None


# Per-source confidence weights. Anything written by an HNS Semafor /igraci/
# page is structured + verified, so we trust it implicitly. Wikipedia summaries
# are mostly safe but free-form. sport-pgz.hr "O nama" pages tend to be the
# zajednica generic info, so we down-weight them so a plain DeepSeek synthesis
# off a single sport-pgz.hr source falls below the gate.
_SOURCE_WEIGHTS = {
    'semafor.hns.family': 0.95,
    'wikipedia.hr':       0.80,
    'sport-pgz.hr':       0.55,
}
# Fields that are safe to auto-write even from low-confidence sources because
# they come from the entity's own structured page (URLs, IDs).
_HARD_FIELDS = {'profile_url','source_url','slika_url','hns_igrac_id'}


def _confidence(proposed: dict, sources: list[dict]) -> float:
    """Crude 0..1 score: max source weight, scaled by evidence count."""
    if not proposed:
        return 0.0
    weights = []
    for s in sources or []:
        w = _SOURCE_WEIGHTS.get((s.get('source') or '').lower(), 0.50)
        weights.append(w)
    if not weights:
        return 0.0
    base = max(weights)
    bonus = min(0.10, 0.03 * (len(sources) - 1))
    return min(1.0, base + bonus)


def _process(kind: str, eid: int) -> tuple[int, list[str]]:
    """Preview → confidence gate → apply. Returns (#applied, fields)."""
    preview = _http_post(f'/api/v2/enrich/{kind}/{eid}', {})
    if not preview:
        return (0, [])
    proposed = preview.get('proposed') or {}
    sources  = preview.get('sources')  or []
    if not proposed:
        return (0, [])
    conf = _confidence(proposed, sources)
    # Always allow hard structured fields (URLs / IDs) — they are objective.
    hard = {k: v for k, v in proposed.items() if k in _HARD_FIELDS}
    soft = {k: v for k, v in proposed.items() if k not in _HARD_FIELDS}
    fields = dict(hard)
    if conf >= CONFIDENCE_MIN:
        fields.update(soft)
    if not fields:
        _log(f"  {kind}#{eid} skipped — confidence {conf:.2f} < {CONFIDENCE_MIN:.2f}")
        return (0, [])
    res = _http_post(f'/api/v2/enrich/{kind}/{eid}/apply',
                     {'fields': fields, 'sources': sources})
    if not res or 'applied' not in res:
        return (0, [])
    applied = res['applied']
    if applied:
        _log(f"  {kind}#{eid} conf={conf:.2f} → +{len(applied)} {','.join(applied.keys())}")
    return (len(applied), list(applied.keys()))


def _cycle() -> dict:
    started = time.time()
    out = {'sportas': 0, 'klub': 0, 'savez': 0, 'fields_total': 0}
    fields_total = 0
    for kind, picker, limit in (
        ('sportas', _pick_sportas, 25),
        ('klub',    _pick_klub,    10),
        ('savez',   _pick_savez,    5),
    ):
        ids = picker(limit)
        random.shuffle(ids)
        _log(f"cycle: {kind} candidates={len(ids)}")
        for eid in ids:
            if DRY:
                continue
            n, fields = _process(kind, eid)
            out[kind] += 1
            fields_total += n
            if n:
                _log(f"  {kind}#{eid} → +{n} fields {','.join(fields)}")
            time.sleep(1.5)  # gentle pacing
        _heartbeat()
    out['fields_total'] = fields_total
    out['elapsed_s'] = round(time.time() - started, 1)
    return out


def main() -> int:
    _log(f"enrichment_worker starting | API_BASE={API_BASE} | sleep={SLEEP_S}s | dry={DRY}")
    while True:
        try:
            stats = _cycle()
            _log(f"cycle done: {json.dumps(stats)}")
        except Exception as e:
            _log(f"cycle FAILED: {type(e).__name__}: {e}")
        _heartbeat()
        time.sleep(SLEEP_S)


if __name__ == '__main__':
    sys.exit(main() or 0)