"""Mapare operatie ROAAUTO -> cod prestatie RAR + fuzzy lookup pentru editor.

Contract (varianta hibrida, decis 2026-06-15): un item de prestatie poate veni
fie cu `cod_prestatie` (cod RAR direct, ca pana acum), fie cu `cod_op_service`
(cod intern ROAAUTO) + `denumire`. La ingestie incercam sa rezolvam codul intern
prin `operations_mapping`; daca nu exista mapare -> submission `needs_mapping`
(nu se trimite la RAR), iar operatia apare in editorul web unde userul o mapeaza
cu ajutorul unei sugestii fuzzy pe nomenclatorul RAR. La salvarea maparii,
submission-urile blocate pe acel cod se re-rezolva automat.

Functiile de la inceput (normalize/suggest/resolve) sunt PURE (fara DB/HTTP),
unit-testabile direct. Cele cu `conn` sunt helpere de persistenta.
"""

from __future__ import annotations

import json
import unicodedata
from typing import Any

from rapidfuzz import fuzz, process

from . import errors as err_mod
from .nomenclator_seed import FALLBACK_NOMENCLATOR
from .validation import validate_prezentare

# Cont implicit cat timp auth API-key (CORE) nu e implementat: ingestiile vin cu
# account_id NULL si le atribuim contului seed-at in schema (id=1).
DEFAULT_ACCOUNT_ID = 1

# Sub acest scor (0..100) nu preselectam nicio sugestie — userul alege manual.
SUGGEST_MIN_SCORE = 60


# --------------------------------------------------------------------------- #
# Pur: normalizare + fuzzy + rezolvare                                        #
# --------------------------------------------------------------------------- #

def normalize_for_match(value: object) -> str:
    """Upper + fara diacritice + spatii colapsate, pentru potrivire robusta.

    'Reparație  motor' -> 'REPARATIE MOTOR'. Diacriticele romanesti (ă/â/î/ș/ț)
    si artefactele de encoding nu trebuie sa strice scorul fuzzy.
    """
    s = str(value or "")
    s = unicodedata.normalize("NFKD", s)
    s = "".join(ch for ch in s if not unicodedata.combining(ch))
    return " ".join(s.upper().split())


def suggest_codes(
    denumire: object,
    nomenclator: list[dict],
    *,
    limit: int = 5,
) -> list[dict]:
    """Clasament fuzzy al codurilor RAR pentru o denumire de operatie ROAAUTO.

    `nomenclator` = randuri {cod_prestatie, nume_prestatie}. Intoarce
    [{cod_prestatie, nume_prestatie, score}] sortat descrescator dupa scor.
    Daca denumirea e goala, intoarce nomenclatorul in ordinea data, scor 0.
    """
    query = normalize_for_match(denumire)
    rows = [r for r in nomenclator if (r.get("cod_prestatie") or "")]
    if not query:
        return [{**r, "score": 0.0} for r in rows[:limit]]

    choices = {r["cod_prestatie"]: normalize_for_match(r.get("nume_prestatie")) for r in rows}
    by_cod = {r["cod_prestatie"]: r for r in rows}
    # token_sort_ratio (nu token_set_ratio): recompenseaza acoperirea cat mai multor
    # cuvinte din denumire, in loc sa dea 100 la orice subset (ex. "REPARATIE" si
    # "REPARATIE ODOMETRU" ar fi egale la set_ratio).
    ranked = process.extract(
        query,
        choices,
        scorer=fuzz.token_sort_ratio,
        limit=limit,
    )
    # process.extract -> [(value, score, key)]; key = cod_prestatie.
    return [
        {
            "cod_prestatie": cod,
            "nume_prestatie": by_cod[cod].get("nume_prestatie"),
            "score": float(score),
        }
        for _val, score, cod in ranked
    ]


# Prefixul pus pe `cod_sursa` cand un item e rezolvat printr-o regula text (US-010).
# Forma: "text_rule:<pattern original al regulii castigatoare>". Payload-harmless —
# RAR citeste doar `cod_prestatie`; `cod_sursa` ramane in payload_json fara efect.
COD_SURSA_TEXT_RULE_PREFIX = "text_rule:"


def _rezolva_din_reguli_text(
    item: dict,
    text_rules: list[dict] | None,
    valid_codes: set[str] | None,
) -> tuple[str | None, str | None, bool | None]:
    """Cauta prima regula text (in ordinea data) al carei pattern e substring al
    textului operatiei. Intoarce (cod uppercase, pattern original, auto_send) daca e
    valid, altfel (None, None, None).

    Textul operatiei = `denumire` daca exista, altfel `cod_op_service`. Ambele parti
    (text si pattern) se normalizeaza cu `normalize_for_match` (fara diacritice,
    uppercase, spatii colapsate) -> match insensibil la caz/diacritice.

    `text_rules` e deja ordonata (priority ASC, id ASC) de `load_text_rules`, deci
    prima regula care da match castiga. Daca regula castigatoare are un cod absent din
    `valid_codes` (cand `valid_codes` e setat), nu intoarcem un cod invalid ->
    (None, None, None) (operatia ramane nemapata), coerent cu garda din `resolve_prestatii`.

    Pattern-ul intors e cel ORIGINAL al regulii (pentru telemetrie US-010), nu cel
    normalizat folosit la match. `auto_send` = flagul regulii castigatoare: cand e
    falsy (DEFAULT 0, decizia CEO de siguranta) randul trebuie TINUT pentru verificare
    umana, nu trimis automat la RAR (blast radius substring + FINALIZATA ireversibil).
    """
    if not text_rules:
        return None, None, None
    text = normalize_for_match(item.get("denumire") or item.get("cod_op_service"))
    if not text:
        return None, None, None
    for rule in text_rules:
        pat = normalize_for_match(rule.get("pattern"))
        if not pat or pat not in text:
            continue
        # Prima regula care da match castiga.
        cod = (rule.get("cod_prestatie") or "").strip().upper()
        if not cod:
            return None, None, None
        if valid_codes is not None and cod not in valid_codes:
            return None, None, None  # cod invalid in nomenclator -> nu il punem; ramane nemapat
        return cod, rule.get("pattern"), bool(rule.get("auto_send"))
    return None, None, None


def text_rule_hits(resolved: list[dict] | None) -> list[dict]:
    """Extrage din itemii rezolvati cei care au primit cod dintr-o regula text (US-010).

    Intoarce [{pattern, cod_prestatie}] pentru fiecare item al carui `cod_sursa`
    incepe cu `COD_SURSA_TEXT_RULE_PREFIX`. Pur (fara DB); apelantii cu `conn` il
    folosesc ca sa emita `log_event("text_rule_hit", ...)`.
    """
    hits: list[dict] = []
    for item in resolved or []:
        sursa = item.get("cod_sursa")
        if isinstance(sursa, str) and sursa.startswith(COD_SURSA_TEXT_RULE_PREFIX):
            hits.append({
                "pattern": sursa[len(COD_SURSA_TEXT_RULE_PREFIX):],
                "cod_prestatie": item.get("cod_prestatie"),
            })
    return hits


def text_rules_overlap(pattern: str, existing_rules: list[dict] | None) -> list[dict]:
    """Reguli text existente care se SUPRAPUN cu `pattern` (US-011, avertisment neblocant).

    Overlap = pattern-ul nou normalizat (`normalize_for_match`) e substring al unei
    reguli existente SAU invers (oricare directie). Pur, determinist, fara DB.

    Un pattern IDENTIC dupa normalizare NU e overlap: e un upsert (update al codului),
    nu o suprapunere care merita avertisment. Intoarce dict-urile originale din
    `existing_rules` care se suprapun (in ordinea data).
    """
    pat = normalize_for_match(pattern)
    if not pat:
        return []
    hits: list[dict] = []
    for rule in existing_rules or []:
        other = normalize_for_match(rule.get("pattern"))
        if not other or other == pat:
            continue  # gol sau identic -> nu e overlap
        if pat in other or other in pat:
            hits.append(rule)
    return hits


def resolve_prestatii(
    prestatii: list[dict] | None,
    mapping: dict[str, str],
    valid_codes: set[str] | None = None,
    text_rules: list[dict] | None = None,
) -> tuple[list[dict], list[dict]]:
    """Rezolva fiecare item: umple `cod_prestatie` din maparea op->cod unde lipseste.

    Reguli (hibrid):
      - item cu `cod_prestatie` valid (in nomenclator) -> pastrat ca atare.
      - item fara cod, cu `cod_op_service` in `mapping` -> umplem cod_prestatie.
      - item fara cod, nemapat exact, dar al carui text da match pe o regula text
        (substring) -> umplem cod_prestatie din prima regula care potriveste.
      - item fara cod, fara mapare si fara regula text -> ramane nemapat.
      - item cu `cod_prestatie` NECUNOSCUT in nomenclator -> tratat ca operatie de
        mapat: il promovam la `cod_op_service` (daca nu exista deja) ca sa intre in
        fluxul needs_mapping. Confirmat live (2026-06-23): RAR accepta NUMAI coduri
        din nomenclator (coloana COD_PRESTATIE max 5 car.); un cod necunoscut da
        HTTP 500 si RECORD PARTIAL la RAR (terminal) -> nu-l trimitem niciodata raw.

    Precedenta (stricta): `cod_prestatie` direct valid > mapare exacta `cod_op_service`
    in `mapping` > reguli text > nemapat. Regulile text se incearca DOAR cand nu exista
    cod valid SI op nu e in `mapping`.

    `valid_codes` = setul de coduri RAR valide (uppercase) din nomenclator. Cand e
    None, validarea e dezactivata (compat: comportamentul vechi „cod_prestatie trece
    neatins"); rutele API il paseaza intotdeauna.

    `text_rules` = lista de dict-uri ca cea intoarsa de `load_text_rules`
    ([{pattern, cod_prestatie, auto_send, priority}], ordonata priority ASC, id ASC).
    Default None = comportament actual neschimbat (fara reguli text).

    Intoarce (prestatii_rezolvate, nemapate). `prestatii_rezolvate` pastreaza
    si campurile originale (cod_op_service/denumire) ca re-rezolvarea sa aiba
    contextul; payload-ul RAR citeste doar cod_prestatie. `nemapate` =
    [{cod_op_service, denumire}] pentru editor.
    """
    resolved: list[dict] = []
    unmapped: list[dict] = []
    for item in prestatii or []:
        it = dict(item)
        # Curata adnotarile aditive ale rezolvarii (cod_sursa US-010 + flagul de
        # hold pe regula auto_send=0): se recalculeaza de la zero la fiecare rezolvare.
        # Altfel, un item re-rezolvat acum prin alta cale (ex. mapare exacta) ar pastra
        # un cod_sursa/flag stale din payload -> telemetrie falsa + hold gresit.
        it.pop("cod_sursa", None)
        it.pop("regula_fara_autosend", None)
        cod = (it.get("cod_prestatie") or "").strip().upper()
        op = (it.get("cod_op_service") or "").strip()
        cod_valid = bool(cod) and (valid_codes is None or cod in valid_codes)
        if cod_valid:
            it["cod_prestatie"] = cod
        else:
            # cod lipsa SAU necunoscut in nomenclator -> ruta de mapare.
            if cod and not op:
                # Promovam codul direct necunoscut la cod_op_service ca sa-l poti mapa
                # in editor (cu denumire = codul, pentru sugestia fuzzy) si sa se retina.
                op = cod
                it["cod_op_service"] = op
                if not it.get("denumire"):
                    it["denumire"] = cod
            if op and op in mapping:
                it["cod_prestatie"] = mapping[op]
            elif op:
                # Mapare exacta absenta -> incearca regulile text (substring).
                cod_regula, pattern_regula, auto_send_regula = _rezolva_din_reguli_text(
                    it, text_rules, valid_codes
                )
                if cod_regula is not None:
                    it["cod_prestatie"] = cod_regula
                    # Adnotare aditiva (US-010): marcheaza ca rezolvat-prin-regula cu
                    # pattern-ul sursa. Payload-harmless (RAR citeste doar cod_prestatie).
                    it["cod_sursa"] = f"{COD_SURSA_TEXT_RULE_PREFIX}{pattern_regula or ''}"
                    # Siguranta CEO (US-001): regula cu auto_send=0 rezolva codul dar
                    # TINE randul pentru verificare umana (has_no_auto_send -> True).
                    if not auto_send_regula:
                        it["regula_fara_autosend"] = True
                else:
                    it["cod_prestatie"] = None
                    unmapped.append({"cod_op_service": op, "denumire": it.get("denumire")})
            # item fara cod si fara op: il lasam asa; validarea de continut prinde
            # "prestatii goale"/cod lipsa.
        resolved.append(it)
    return resolved, unmapped


# --------------------------------------------------------------------------- #
# Persistenta (conn)                                                          #
# --------------------------------------------------------------------------- #

def account_or_default(account_id: int | None) -> int:
    return account_id if account_id is not None else DEFAULT_ACCOUNT_ID


def account_scope_clause(account_id: int) -> tuple[str, list]:
    """Fragment SQL + params pentru filtrarea pe cont in tabele cu account_id nullable.

    Aplica regula: NULL apartine contului 1 (legacy/OV-2).
    Foloseste DOAR pe submissions (account_id NULLABLE).
    NU folosi pe operations_mapping (account_id NOT NULL) — acolo WHERE account_id=? simplu.
    """
    return (
        "(account_id = ? OR (account_id IS NULL AND ? = 1))",
        [account_id, account_id],
    )


def seed_nomenclator_if_empty(conn) -> int:
    """Seed fallback (18 coduri din contract) DOAR daca nomenclator_rar e gol.

    Worker-ul suprascrie live; aici doar garantam ca editorul fuzzy merge offline.
    Intoarce nr. de randuri inserate.
    """
    n = conn.execute("SELECT COUNT(*) AS n FROM nomenclator_rar").fetchone()["n"]
    if n:
        return 0
    conn.executemany(
        "INSERT OR IGNORE INTO nomenclator_rar (cod_prestatie, nume_prestatie) VALUES (?, ?)",
        FALLBACK_NOMENCLATOR,
    )
    return len(FALLBACK_NOMENCLATOR)


def upsert_nomenclator(conn, items: list[dict]) -> int:
    """Upsert nomenclator live din RAR. `items` = forma API (codPrestatie/numePrestatie).

    Tolerant la chei: codPrestatie/cod_prestatie/cod, numePrestatie/nume_prestatie/nume.
    Intoarce nr. de coduri upsert-ate.
    """
    rows: list[tuple[str, str]] = []
    for it in items or []:
        if not isinstance(it, dict):
            continue
        cod = it.get("codPrestatie") or it.get("cod_prestatie") or it.get("cod")
        nume = it.get("numePrestatie") or it.get("nume_prestatie") or it.get("nume")
        if cod:
            rows.append((str(cod).strip().upper(), str(nume or "").strip()))
    if not rows:
        return 0
    conn.executemany(
        "INSERT INTO nomenclator_rar (cod_prestatie, nume_prestatie, updated_at) "
        "VALUES (?, ?, datetime('now')) "
        "ON CONFLICT(cod_prestatie) DO UPDATE SET nume_prestatie=excluded.nume_prestatie, "
        "updated_at=datetime('now')",
        rows,
    )
    return len(rows)


def load_nomenclator(conn) -> list[dict]:
    rows = conn.execute(
        "SELECT cod_prestatie, nume_prestatie FROM nomenclator_rar ORDER BY cod_prestatie"
    ).fetchall()
    return [dict(r) for r in rows]


def load_nomenclator_codes(conn) -> set[str]:
    """Setul de coduri RAR valide (uppercase) pentru validarea cod_prestatie la ingestie.

    Intoarce set() daca nomenclatorul e gol -> apelantul trebuie sa NU valideze in
    acel caz (altfel ar bloca totul). In practica nomenclatorul e mereu populat:
    seed fallback (18 coduri) la boot + upsert live de la worker la fiecare login.
    """
    rows = conn.execute("SELECT cod_prestatie FROM nomenclator_rar").fetchall()
    return {(r["cod_prestatie"] or "").strip().upper() for r in rows if (r["cod_prestatie"] or "").strip()}


def load_mapping(conn, account_id: int | None) -> dict[str, str]:
    """{cod_op_service -> cod_prestatie} pentru un cont."""
    acct = account_or_default(account_id)
    rows = conn.execute(
        "SELECT cod_op_service, cod_prestatie FROM operations_mapping WHERE account_id=?",
        (acct,),
    ).fetchall()
    return {r["cod_op_service"]: r["cod_prestatie"] for r in rows}


def load_mapping_meta(conn, account_id: int | None) -> dict[str, dict]:
    """{cod_op_service -> {cod_prestatie, auto_send}} pentru un cont.

    T6/OV-1: varianta extinsa care include si flagul auto_send per operatie.
    """
    acct = account_or_default(account_id)
    rows = conn.execute(
        "SELECT cod_op_service, cod_prestatie, auto_send FROM operations_mapping WHERE account_id=?",
        (acct,),
    ).fetchall()
    return {
        r["cod_op_service"]: {"cod_prestatie": r["cod_prestatie"], "auto_send": bool(r["auto_send"])}
        for r in rows
    }


def classify_prezentare(
    content: dict,
    mapping: dict[str, str],
    mapping_meta: dict[str, dict],
    valid_codes: set[str] | None = None,
    text_rules: list[dict] | None = None,
) -> dict:
    """Helper pur de clasificare: reproduce EXACT logica create_prezentari fara DB/efecte.

    Apelat de AMBELE rute (POST /v1/prezentari si POST /v1/prezentari/valideaza) pentru
    a garanta acelasi verdict — invariantul de corectitudine dry-run (PRD 5.2).

    Intoarce {"status", "rar_error", "resolved", "unmapped", "errors", "content"}.
    "content" = copia actualizata (VIN/nr canonicalizat + prestatii rezolvate).
    """
    from .idempotency import canonicalize_row  # import local: evita circular (mapping <- idempotency)

    c = dict(content)
    canon = canonicalize_row(c)
    c.update({
        "vin": canon["vin"],
        "nr_inmatriculare": canon["nr_inmatriculare"],
        "odometru_final": canon["odometru_final"],
    })

    resolved, unmapped = resolve_prestatii(c.get("prestatii"), mapping, valid_codes, text_rules)
    c["prestatii"] = resolved

    if unmapped:
        status = "needs_mapping"
        coduri = ", ".join((u.get("cod_op_service") or "") for u in unmapped)
        rar_error = json.dumps(
            {"unmapped": unmapped, **err_mod.eroare("COD_NEMAPAT", cauza=f"Coduri fara mapare RAR: {coduri}")},
            ensure_ascii=False,
        )
        errors: list[dict] = []
    else:
        errors = validate_prezentare(c)
        if errors:
            status = "needs_data"
            rar_error = json.dumps(errors, ensure_ascii=False)
        elif has_no_auto_send(resolved, mapping_meta):
            status = "needs_mapping"
            mesaj = "cod mapat cu auto_send=0; review manual inainte de trimitere"
            rar_error = json.dumps(
                {"auto_send": mesaj, **err_mod.eroare("AUTO_SEND_OPRIT", cauza=mesaj)},
                ensure_ascii=False,
            )
        else:
            status = "queued"
            rar_error = None

    return {
        "status": status,
        "rar_error": rar_error,
        "resolved": resolved,
        "unmapped": unmapped,
        "errors": errors,
        "content": c,
    }


def has_no_auto_send(resolved: list[dict], mapping_meta: dict[str, dict]) -> bool:
    """Verifica daca vreun item rezolvat are auto_send=0 (mapare exacta SAU regula text).

    T6/OV-1: un cod nou-mapat (operations_mapping) cu auto_send=0 nu trebuie trimis automat.
    PRD 5.8 US-001 (decizia CEO): la fel pentru un item rezolvat printr-o REGULA TEXT cu
    auto_send=0 — marcat de `resolve_prestatii` cu `regula_fara_autosend`. In ambele cazuri
    randul ramane needs_mapping (review manual) pana cand operatorul activeaza „In coada".
    Items cu cod_prestatie direct (nu via cod_op_service/regula) nu sunt afectate.
    """
    for item in resolved:
        if item.get("regula_fara_autosend"):
            return True
        op = (item.get("cod_op_service") or "").strip()
        if op and op in mapping_meta and not mapping_meta[op]["auto_send"]:
            return True
    return False


def pending_unmapped(conn, account_id=None) -> list[dict]:
    """Operatii distincte nemapate, agregate din submission-urile `needs_mapping`.

    account_id=None (default): global — intentionat pentru web/routes.py (back-compat).
    Apelantii noi din API TREBUIE sa paseze account_id explicit; None global e
    footgun (scurge cross-account) si e rezervat exclusiv pentru dashboard-ul intern.

    account_id=int: filtreaza in SQL pe cont inclusiv randuri legacy (account_id IS NULL
    apartine contului 1, OV-2). Filtrarea in SQL, nu post-hoc in Python.
    """
    nomenclator = load_nomenclator(conn)
    if account_id is not None:
        scope_sql, scope_params = account_scope_clause(account_id)
        rows = conn.execute(
            f"SELECT id, account_id, payload_json FROM submissions "
            f"WHERE status='needs_mapping' AND {scope_sql}",
            scope_params,
        ).fetchall()
    else:
        rows = conn.execute(
            "SELECT id, account_id, payload_json FROM submissions WHERE status='needs_mapping'"
        ).fetchall()

    agg: dict[tuple[int, str], dict[str, Any]] = {}
    for r in rows:
        acct = r["account_id"] if r["account_id"] is not None else DEFAULT_ACCOUNT_ID
        try:
            content = json.loads(r["payload_json"])
        except (ValueError, TypeError):
            continue
        for item in content.get("prestatii") or []:
            if not isinstance(item, dict):
                continue
            if (item.get("cod_prestatie") or ""):
                continue
            op = (item.get("cod_op_service") or "").strip()
            if not op:
                continue
            key = (acct, op)
            entry = agg.setdefault(
                key,
                {"account_id": acct, "cod_op_service": op, "denumire": item.get("denumire"), "blocked": 0, "_ids": set()},
            )
            if not entry["denumire"] and item.get("denumire"):
                entry["denumire"] = item.get("denumire")
            entry["_ids"].add(r["id"])

    out: list[dict] = []
    for entry in agg.values():
        entry["blocked"] = len(entry.pop("_ids"))
        entry["suggestions"] = suggest_codes(entry["denumire"], nomenclator, limit=5)
        out.append(entry)
    out.sort(key=lambda e: (-e["blocked"], e["cod_op_service"]))
    return out


def save_mapping(conn, account_id: int | None, cod_op_service: str, cod_prestatie: str, auto_send: bool) -> None:
    """Upsert o mapare op->cod (UNIQUE pe account_id+cod_op_service)."""
    acct = account_or_default(account_id)
    op = (cod_op_service or "").strip()
    cod = (cod_prestatie or "").strip().upper()
    if not op or not cod:
        raise ValueError("cod_op_service si cod_prestatie sunt obligatorii")
    conn.execute(
        "INSERT INTO operations_mapping (account_id, cod_op_service, cod_prestatie, auto_send) "
        "VALUES (?, ?, ?, ?) "
        "ON CONFLICT(account_id, cod_op_service) DO UPDATE SET "
        "cod_prestatie=excluded.cod_prestatie, auto_send=excluded.auto_send",
        (acct, op, cod, 1 if auto_send else 0),
    )


def load_text_rules(conn, account_id: int | None) -> list[dict]:
    """Returneaza regulile text ale unui cont, ordonate priority ASC, id ASC.

    Fiecare element: {pattern, cod_prestatie, auto_send, priority}.
    Aplica account_or_default (None == 1).
    """
    acct = account_or_default(account_id)
    rows = conn.execute(
        "SELECT pattern, cod_prestatie, auto_send, priority "
        "FROM operation_text_rules "
        "WHERE account_id=? "
        "ORDER BY priority ASC, id ASC",
        (acct,),
    ).fetchall()
    return [dict(r) for r in rows]


def save_text_rule(
    conn,
    account_id: int | None,
    pattern: str,
    cod_prestatie: str,
    auto_send: bool,
) -> None:
    """Upsert o regula text pe (account_id, pattern).

    auto_send boolean -> 0/1. Daca regula exista deja (acelasi cont + pattern),
    actualizeaza cod_prestatie si auto_send.
    """
    acct = account_or_default(account_id)
    pat = (pattern or "").strip()
    cod = (cod_prestatie or "").strip().upper()
    if not pat or not cod:
        raise ValueError("pattern si cod_prestatie sunt obligatorii")
    conn.execute(
        "INSERT INTO operation_text_rules (account_id, pattern, cod_prestatie, auto_send) "
        "VALUES (?, ?, ?, ?) "
        "ON CONFLICT(account_id, pattern) DO UPDATE SET "
        "cod_prestatie=excluded.cod_prestatie, auto_send=excluded.auto_send",
        (acct, pat, cod, 1 if auto_send else 0),
    )


def delete_text_rule(conn, account_id: int | None, pattern: str) -> None:
    """Sterge regula cu (account_id, pattern) daca exista."""
    acct = account_or_default(account_id)
    pat = (pattern or "").strip()
    conn.execute(
        "DELETE FROM operation_text_rules WHERE account_id=? AND pattern=?",
        (acct, pat),
    )


def _emite_text_rule_hits(conn, account_id: int, submission_id: int, resolved: list[dict] | None) -> None:
    """Emite `text_rule_hit` in app_events pentru fiecare item rezolvat prin regula text.

    US-010: telemetrie „ce regula a rezolvat ce submission". Best-effort (log_event
    inghite exceptiile). Context = {submission_id, account_id, pattern, cod_prestatie} —
    fara PII (pattern + cod nu sunt PII). Import local: evita orice risc de ciclu la import.
    """
    hits = text_rule_hits(resolved)
    if not hits:
        return
    from .observ import log_event  # import local: best-effort, fara ciclu la import-time
    for hit in hits:
        log_event(
            "text_rule_hit",
            account_id=account_id,
            cod=hit.get("cod_prestatie"),
            conn=conn,
            context={
                "submission_id": submission_id,
                "account_id": account_id,
                "pattern": hit.get("pattern"),
                "cod_prestatie": hit.get("cod_prestatie"),
            },
        )


def reresolve_account(conn, account_id: int | None, batch_id: int | None = None) -> dict[str, int]:
    """Re-rezolva submission-urile `needs_mapping` ale unui cont dupa o noua mapare.

    Pentru fiecare: aplica maparea curenta; daca nu mai raman op-uri nemapate ->
    ruleaza validarea de continut (T3) si trece pe `queued` (sau `needs_data` cu
    motiv), resetand backoff-ul. Daca raman nemapate, ramane `needs_mapping` cu
    motivul actualizat. Intoarce {requeued, still_blocked, needs_data, review_manual}.

    T6/OV-1: auto_send=0 pe un cod nou-mapat -> nu trece pe 'queued' (ramane
    'needs_mapping' cu motiv "review manual"); previne FINALIZATA eronat permanent.

    T7: batch_id != None -> scope la seria comitata (NU cross-batch).
        batch_id is None -> re-rezolva toti (canal API, batch_id IS NULL inclus).
    """
    acct = account_or_default(account_id)
    mapping_meta = load_mapping_meta(conn, acct)
    mapping = {op: meta["cod_prestatie"] for op, meta in mapping_meta.items()}
    valid_codes = load_nomenclator_codes(conn) or None
    # T2: incarca regulile text O DATA, inainte de bucla pe randuri.
    text_rules = load_text_rules(conn, acct)

    if batch_id is not None:
        # T7: scope la batch-ul specificat (import commit explicit).
        # NU atinge randuri din alte batches sau din feed API.
        rows = conn.execute(
            "SELECT id, payload_json FROM submissions "
            "WHERE status='needs_mapping' AND account_id=? AND batch_id=?",
            (acct, batch_id),
        ).fetchall()
    else:
        # POST /v1/mapari (save manual): re-rezolva EXCLUSIV canalul API (batch_id IS NULL).
        # T7/R1 INCHIS: salvarea unei mapari NU re-queues randuri din batches de import
        # (cross-batch / cross-feed). Batches de import sunt re-rezolvate doar la commit explicit.
        rows = conn.execute(
            "SELECT id, payload_json FROM submissions "
            "WHERE status='needs_mapping' AND account_id=? AND batch_id IS NULL",
            (acct,),
        ).fetchall()

    stats = {"requeued": 0, "still_blocked": 0, "needs_data": 0, "review_manual": 0}
    for r in rows:
        try:
            content = json.loads(r["payload_json"])
        except (ValueError, TypeError):
            continue
        resolved, unmapped = resolve_prestatii(content.get("prestatii"), mapping, valid_codes, text_rules)
        content["prestatii"] = resolved
        payload_json = json.dumps(content, ensure_ascii=False)

        # US-010: telemetrie pentru itemii rezolvati prin regula text.
        _emite_text_rule_hits(conn, acct, r["id"], resolved)

        if unmapped:
            conn.execute(
                "UPDATE submissions SET payload_json=?, rar_error=?, updated_at=datetime('now') WHERE id=?",
                (payload_json, json.dumps({"unmapped": unmapped}, ensure_ascii=False), r["id"]),
            )
            stats["still_blocked"] += 1
            continue

        # T6/OV-1: verifica auto_send inainte de re-queuing
        if has_no_auto_send(resolved, mapping_meta):
            conn.execute(
                "UPDATE submissions SET payload_json=?, rar_error=?, updated_at=datetime('now') WHERE id=?",
                (
                    payload_json,
                    json.dumps({"auto_send": "cod mapat cu auto_send=0; review manual inainte de trimitere"}, ensure_ascii=False),
                    r["id"],
                ),
            )
            stats["review_manual"] += 1
            continue

        errors = validate_prezentare(content)
        if errors:
            conn.execute(
                "UPDATE submissions SET status='needs_data', payload_json=?, rar_error=?, "
                "updated_at=datetime('now') WHERE id=?",
                (payload_json, json.dumps(errors, ensure_ascii=False), r["id"]),
            )
            stats["needs_data"] += 1
        else:
            conn.execute(
                "UPDATE submissions SET status='queued', payload_json=?, rar_error=NULL, "
                "retry_count=0, next_attempt_at=NULL, updated_at=datetime('now') WHERE id=?",
                (payload_json, r["id"]),
            )
            stats["requeued"] += 1
    return stats