"""US-011 (PRD 5.15): account-scope pe GET-urile de listare API (securitate).

Verifica:
  - GET /v1/prezentari: un cont nu vede submissions ale altui cont
  - GET /v1/prezentari/{id}: 404-before-leak pe id strain
  - Unauthenticated access cu require_api_key=True -> 401
  - Filtre si paginare nu sparg scope-ul

Legatura cu implementare: resolve_account_id + account_scope_clause (mecanisme
existente, reutilizate). Testele LOCK DOWN comportamentul deja implementat
si verifica alinierea cu AUTOPASS_REQUIRE_API_KEY (dev vs prod).
"""

from __future__ import annotations

import json
import os
import tempfile

import pytest
from starlette.testclient import TestClient


def _create_account_with_key(name: str):
    """Creeaza cont + cheie API. Intoarce (account_id, plaintext_key)."""
    from app.accounts import create_account
    from app.auth import create_api_key
    from app.db import get_connection

    conn = get_connection()
    try:
        acct_id = create_account(conn, name, active=True)
        key = create_api_key(conn, acct_id)
        conn.commit()
        return acct_id, key
    finally:
        conn.close()


def _insert_submission(acct: int, vin: str = "WVWZZZ1JZXW000777") -> int:
    from app.db import get_connection
    conn = get_connection()
    try:
        p = {
            "vin": vin,
            "nr_inmatriculare": "B777TST",
            "data_prestatie": "2026-06-18",
            "odometru_final": "50000",
            "prestatii": [{"cod_prestatie": "OE-1", "denumire": "Revizie"}],
        }
        cur = conn.execute(
            "INSERT INTO submissions (idempotency_key, account_id, status, payload_json) "
            "VALUES (?, ?, ?, ?)",
            (f"api-scope-{acct}-{os.urandom(4).hex()}", acct, "sent", json.dumps(p)),
        )
        conn.commit()
        rid = cur.lastrowid
        assert rid is not None
        return int(rid)
    finally:
        conn.close()


@pytest.fixture()
def client(monkeypatch):
    """Client cu DB izolata, REQUIRE_API_KEY=false (dev default)."""
    tmp = tempfile.mkdtemp()
    monkeypatch.setenv("AUTOPASS_DB_PATH", os.path.join(tmp, "api-scope.db"))
    monkeypatch.setenv("AUTOPASS_REQUIRE_API_KEY", "false")
    from app.config import get_settings
    get_settings.cache_clear()
    from app.main import app
    with TestClient(app) as c:
        yield c
    get_settings.cache_clear()


@pytest.fixture()
def client_prod(monkeypatch):
    """Client cu require_api_key=True (comportament productie)."""
    tmp = tempfile.mkdtemp()
    monkeypatch.setenv("AUTOPASS_DB_PATH", os.path.join(tmp, "api-scope-prod.db"))
    monkeypatch.setenv("AUTOPASS_REQUIRE_API_KEY", "true")
    from app.config import get_settings
    get_settings.cache_clear()
    from app.main import app
    with TestClient(app) as c:
        yield c
    get_settings.cache_clear()


# ---------------------------------------------------------------------------
# Test 1: cross-account isolation pe listare submissions (dev mode)
# ---------------------------------------------------------------------------

def test_get_listare_scoped_cont(client):
    """Un cont NU vede submissions (VIN/PII) ale altui cont in GET /v1/prezentari.

    Contul A are un submission cu VIN_A; contul B cu cheie proprie nu trebuie
    sa vada VIN_A in listarea sa.
    """
    VIN_A = "WVWZZZ1JZXWAPI1AA"
    VIN_B = "WVWZZZ1JZXWAPI2BB"

    acct_a, key_a = _create_account_with_key("ApiContA")
    acct_b, key_b = _create_account_with_key("ApiContB")
    _insert_submission(acct_a, vin=VIN_A)
    _insert_submission(acct_b, vin=VIN_B)

    # Cont B listeaza cu propria cheie
    resp = client.get("/v1/prezentari", headers={"X-API-Key": key_b})
    assert resp.status_code == 200
    data = resp.json()

    vins = [s["prezentare"]["vin"] for s in data["submissions"] if s.get("prezentare")]
    assert VIN_B in vins, "Contul B ar trebui sa vada propriul submission"
    assert VIN_A not in vins, (
        "Scurgere cross-account: VIN-ul contului A vizibil contului B prin API"
    )


# ---------------------------------------------------------------------------
# Test 2: unauthenticated 401 in prod mode
# ---------------------------------------------------------------------------

def test_get_listare_neautentificat_401(client_prod):
    """Fara cheie API cu require_api_key=True, GET /v1/prezentari -> 401."""
    resp = client_prod.get("/v1/prezentari")
    assert resp.status_code == 401, (
        f"Asteptat 401 fara cheie API in mod prod, primit {resp.status_code}."
    )


def test_get_listare_cheie_invalida_401(client_prod):
    """Cheie API invalida (prezenta dar gresita) -> 401, indiferent de flag."""
    resp = client_prod.get("/v1/prezentari", headers={"X-API-Key": "rfak_invalida_xxx"})
    assert resp.status_code == 401


# ---------------------------------------------------------------------------
# Test 3: 404-before-leak pe detaliu id strain
# ---------------------------------------------------------------------------

def test_get_detaliu_scoped_404(client):
    """GET /v1/prezentari/{id} pe un id al altui cont -> 404 (fara leak).

    Acelasi 404 pentru id inexistent = nu confirmam existenta.
    """
    acct_a, key_a = _create_account_with_key("DetApiA")
    acct_b, key_b = _create_account_with_key("DetApiB")
    sid_a = _insert_submission(acct_a, vin="WVWZZZ1JZXWDET100")

    # Cont B incearca sa acceseze submission-ul contului A
    resp = client.get(f"/v1/prezentari/{sid_a}", headers={"X-API-Key": key_b})
    assert resp.status_code == 404, (
        f"Asteptat 404, primit {resp.status_code}. "
        "Nu trebuie confirmata existenta unui submission al altui cont."
    )

    # Id inexistent -> acelasi 404
    resp2 = client.get("/v1/prezentari/999999", headers={"X-API-Key": key_b})
    assert resp2.status_code == 404


def test_get_detaliu_neautentificat_401(client_prod):
    """GET /v1/prezentari/{id} fara cheie API in prod -> 401."""
    resp = client_prod.get("/v1/prezentari/1")
    assert resp.status_code == 401


# ---------------------------------------------------------------------------
# Test 4: contul implicit id=1 in dev (nu trebuie spart de scope)
# ---------------------------------------------------------------------------

def test_get_listare_cont_implicit_dev(client):
    """In dev (require_api_key=False), fara cheie -> cont implicit id=1.

    Contul 1 vede propriile submissions (NULL account_id = cont 1 prin
    account_scope_clause). NU trebuie sa vada submissions cu alt account_id.
    """
    # Inserare submission pt cont id=1 (account_id NULL = legacy cont 1)
    from app.db import get_connection
    conn = get_connection()
    try:
        p = json.dumps({
            "vin": "WVWZZZ1JZXWDEV001",
            "nr_inmatriculare": "B001DEV",
            "data_prestatie": "2026-06-18",
            "odometru_final": "10000",
            "prestatii": [{"cod_prestatie": "OE-1"}],
        })
        conn.execute(
            "INSERT INTO submissions (idempotency_key, account_id, status, payload_json) "
            "VALUES (?, NULL, 'sent', ?)",
            ("dev-null-key-001", p),
        )
        conn.commit()
    finally:
        conn.close()

    # Fara cheie in dev -> cont implicit 1, vede submission-ul cu account_id NULL
    resp = client.get("/v1/prezentari")
    assert resp.status_code == 200
    vins = [s["prezentare"]["vin"] for s in resp.json()["submissions"] if s.get("prezentare")]
    assert "WVWZZZ1JZXWDEV001" in vins, "Contul implicit 1 trebuie sa vada submissions NULL"


# ---------------------------------------------------------------------------
# Test 5: izolare status filter nu sparge scope-ul
# ---------------------------------------------------------------------------

def test_get_listare_filtru_status_nu_sparge_scope(client):
    """Filtrul ?status= nu poate scoate randuri din alt cont."""
    VIN_A = "WVWZZZ1JZXWSTA1AA"

    acct_a, key_a = _create_account_with_key("StatApiA")
    acct_b, key_b = _create_account_with_key("StatApiB")
    _insert_submission(acct_a, vin=VIN_A)

    # Cont B filtreaza dupa status 'sent' - nu trebuie sa vada VIN_A
    resp = client.get("/v1/prezentari?status=sent", headers={"X-API-Key": key_b})
    assert resp.status_code == 200
    vins = [s["prezentare"]["vin"] for s in resp.json()["submissions"] if s.get("prezentare")]
    assert VIN_A not in vins, (
        "Filtrul status a scos date din alt cont (scurgere cross-account prin filtru)."
    )


# ============================================================================
# PRD 5.17 — enforcement planuri: gate API (T4) + volum (T3) + kill-switch (T5)
# ============================================================================

_PREZ_PLAN = {
    "vin": "WVWZZZ1KZAW900001",
    "nr_inmatriculare": "B900TST",
    "data_prestatie": "2026-06-15",
    "odometru_final": "50000",
    "prestatii": [{"cod_op_service": "OP-PLAN-T4", "denumire": "Test plan gate"}],
}


def _set_tier_acct(account_id: int, tier: str, trial_until=None) -> None:
    """Seteaza tier si trial_until pe un cont existent."""
    from app.db import get_connection
    conn = get_connection()
    try:
        conn.execute(
            "UPDATE accounts SET tier=?, trial_until=? WHERE id=?",
            (tier, trial_until, account_id),
        )
        conn.commit()
    finally:
        conn.close()


def _insert_n_submissions(account_id: int, n: int) -> None:
    """Insereaza N submissions queued in luna curenta pentru cont."""
    from datetime import datetime, timezone
    from app.db import get_connection
    conn = get_connection()
    try:
        now_str = datetime.now(timezone.utc).strftime("%Y-%m-%d %H:%M:%S")
        for i in range(n):
            conn.execute(
                "INSERT INTO submissions "
                "(idempotency_key, account_id, status, payload_json, created_at) "
                "VALUES (?, ?, 'queued', '{}', ?)",
                (f"plan-seed-{account_id}-{i}-{os.urandom(4).hex()}", account_id, now_str),
            )
        conn.commit()
    finally:
        conn.close()


# ---------------------------------------------------------------------------
# T4: Gate API — free/standard NU pot accesa rutele de ingestie API
# ---------------------------------------------------------------------------

def test_free_fara_api_403(client):
    """Cont free (non-default, cu cheie API) → 403 PLAN_FARA_API pe POST /v1/prezentari.

    T4 PRD 5.17: gate API refuza conturi cu api_access=False in PLANS.
    """
    acct_id, key = _create_account_with_key("FreePlanGate")
    _set_tier_acct(acct_id, "free", trial_until=None)

    resp = client.post(
        "/v1/prezentari",
        json={"prezentari": [_PREZ_PLAN]},
        headers={"X-API-Key": key},
    )
    assert resp.status_code == 403, f"Asteptat 403, primit {resp.status_code}: {resp.text}"
    detail = resp.json().get("detail", {})
    assert detail.get("cod") == "PLAN_FARA_API", f"Cod eroare gresit: {detail}"


def test_standard_fara_api_403(client):
    """Cont standard (non-default) → 403 PLAN_FARA_API pe POST /v1/prezentari.

    Standard are api_access=False, deci gate-ul API respinge la fel ca free.
    """
    acct_id, key = _create_account_with_key("StdPlanGate")
    _set_tier_acct(acct_id, "standard", trial_until=None)

    resp = client.post(
        "/v1/prezentari",
        json={"prezentari": [_PREZ_PLAN]},
        headers={"X-API-Key": key},
    )
    assert resp.status_code == 403, f"Asteptat 403, primit {resp.status_code}"
    assert resp.json().get("detail", {}).get("cod") == "PLAN_FARA_API"


def test_pro_api_ok(client):
    """Cont pro (non-default) → 200 pe POST /v1/prezentari (trece gate-ul API)."""
    acct_id, key = _create_account_with_key("ProPlanGate")
    _set_tier_acct(acct_id, "pro", trial_until=None)

    resp = client.post(
        "/v1/prezentari",
        json={"prezentari": [_PREZ_PLAN]},
        headers={"X-API-Key": key},
    )
    assert resp.status_code == 200, (
        f"Pro trebuie sa aiba acces API, primit: {resp.status_code}: {resp.text}"
    )


def test_trial_pro_api_ok(client):
    """Cont free cu trial Pro activ → 200 pe POST /v1/prezentari.

    effective_tier() intoarce 'pro' cand trial_until > now, deci gate-ul permite.
    """
    from datetime import datetime, timedelta, timezone
    acct_id, key = _create_account_with_key("TrialPlanGate")
    trial_until = (datetime.now(timezone.utc) + timedelta(days=15)).strftime("%Y-%m-%d %H:%M:%S")
    _set_tier_acct(acct_id, "free", trial_until=trial_until)

    resp = client.post(
        "/v1/prezentari",
        json={"prezentari": [_PREZ_PLAN]},
        headers={"X-API-Key": key},
    )
    assert resp.status_code == 200, (
        f"Trial Pro trebuie sa treaca gate-ul API, primit: {resp.status_code}"
    )


def test_dry_run_valideaza_ramane_permis(client):
    """POST /v1/prezentari/valideaza (dry-run) e permis pe orice plan, inclusiv free.

    Decizie design (PRD 5.17): valideaza nu face enqueue si nu consuma cota,
    deci NU e protejat de gate-ul API — integratorii pot testa fara upgrade.
    """
    acct_id, key = _create_account_with_key("FreeValideazaTest")
    _set_tier_acct(acct_id, "free", trial_until=None)

    resp = client.post(
        "/v1/prezentari/valideaza",
        json={"prezentari": [_PREZ_PLAN]},
        headers={"X-API-Key": key},
    )
    assert resp.status_code == 200, (
        f"valideaza trebuie permis pe plan free (fara gate API), "
        f"primit {resp.status_code}: {resp.text}"
    )


# ---------------------------------------------------------------------------
# T3: Enforce volum — limita 60/luna pe planul Gratuit
# Dev account (id=1) are bypass la gate-ul API, dar NU la verificarea de volum
# ---------------------------------------------------------------------------

def test_free_peste_60_respins_api(client):
    """Dev account (id=1) la 60/60 pe free → a 61-a prezentare respinsa 422 PLAN_LIMITA_LUNARA.

    Dev account (id=1) in dev mode (require_api_key=False) are bypass la gate-ul API (T4),
    dar NU la verificarea de volum (T3). La 60/60, urmatoarea cerere trebuie respinsa 422.
    """
    _set_tier_acct(1, "free", trial_until=None)
    _insert_n_submissions(1, 60)

    # A 61-a cerere (fara cheie = cont 1 in dev mode, bypass gate API, dar volumul e plin)
    resp = client.post("/v1/prezentari", json={"prezentari": [_PREZ_PLAN]})
    assert resp.status_code == 422, (
        f"Asteptat 422 la depasire volum, primit {resp.status_code}: {resp.text}"
    )
    detail = resp.json().get("detail", {})
    assert detail.get("cod") == "PLAN_LIMITA_LUNARA", f"Cod gresit: {detail}"


def test_eroare_3_niveluri_plan_limita(client):
    """Eroarea PLAN_LIMITA_LUNARA contine toate 3 nivelurile: cod, problema, cauza, fix.

    Pattern standard (PRD 5.17): eroare structurata pe 3 niveluri — nu 500, nu catch-all.
    """
    _set_tier_acct(1, "free", trial_until=None)
    _insert_n_submissions(1, 60)

    resp = client.post("/v1/prezentari", json={"prezentari": [_PREZ_PLAN]})
    assert resp.status_code == 422
    detail = resp.json().get("detail", {})
    assert detail.get("cod") == "PLAN_LIMITA_LUNARA", f"Camp 'cod' gresit: {detail}"
    assert detail.get("problema"), f"Camp 'problema' lipsa: {detail}"
    assert detail.get("cauza"), f"Camp 'cauza' lipsa: {detail}"
    assert detail.get("fix"), f"Camp 'fix' lipsa: {detail}"


def test_pro_si_trial_nelimitat(client):
    """Pro si trial Pro nu sunt blocati de volum indiferent de numarul de submissions.

    PLANS['pro']['monthly_limit'] is None -> nelimitat; la fel trial Pro activ.
    """
    from datetime import datetime, timedelta, timezone

    # Cont pro cu 70 submissions (peste limita free de 60)
    pro_id, pro_key = _create_account_with_key("ProVolumTest")
    _set_tier_acct(pro_id, "pro", trial_until=None)
    _insert_n_submissions(pro_id, 70)

    # Cont trial Pro cu 70 submissions
    trial_id, trial_key = _create_account_with_key("TrialVolumTest")
    trial_until = (datetime.now(timezone.utc) + timedelta(days=10)).strftime("%Y-%m-%d %H:%M:%S")
    _set_tier_acct(trial_id, "free", trial_until=trial_until)
    _insert_n_submissions(trial_id, 70)

    # Pro: trebuie 200 (nu 422 de volum)
    r_pro = client.post(
        "/v1/prezentari",
        json={"prezentari": [_PREZ_PLAN]},
        headers={"X-API-Key": pro_key},
    )
    assert r_pro.status_code == 200, f"Pro trebuie sa fie nelimitat, primit: {r_pro.text}"

    # Trial Pro: trebuie 200 (nu 422 de volum)
    prez2 = dict(_PREZ_PLAN, vin="WVWZZZ1KZAW900002", nr_inmatriculare="B900TS2")
    r_trial = client.post(
        "/v1/prezentari",
        json={"prezentari": [prez2]},
        headers={"X-API-Key": trial_key},
    )
    assert r_trial.status_code == 200, f"Trial Pro trebuie sa fie nelimitat, primit: {r_trial.text}"


def test_retry_idempotent_nu_consuma_cota(client):
    """Un retry idempotent al aceleiasi prestatii nu consuma cota de doua ori.

    Invariant idempotenta (arhitectura): monthly_usage creste O SINGURA DATA
    per submission unic. Retryurile (acelasi idempotency_key) sunt dedup-ate,
    deci usage ramine la 1 dupa doua trimiteri identice.

    Folsim cod_prestatie "OE-1" (in nomenclatorul seed) ca sa obtinem status
    'queued' (statusuri "needs_mapping" nu se numara in monthly_usage).
    """
    from datetime import datetime, timezone
    from app.plans import monthly_usage
    from app.db import get_connection

    _set_tier_acct(1, "free", trial_until=None)

    # cod_prestatie "OE-1" e in nomenclatorul seed -> submission va fi 'queued' (contat in usage)
    prez_unic = {
        "vin": "WVWZZZ1KZAW901001",
        "nr_inmatriculare": "B901TST",
        "data_prestatie": "2026-06-15",
        "odometru_final": "50000",
        "prestatii": [{"cod_prestatie": "OE-1", "denumire": "Revizie"}],
    }

    # Prima trimitere — submission noua
    r1 = client.post("/v1/prezentari", json={"prezentari": [prez_unic]})
    assert r1.status_code == 200, f"Prima trimitere trebuie sa treaca: {r1.text}"
    assert not r1.json()["results"][0].get("deduped"), "Prima trimitere nu trebuia sa fie deduped"

    conn = get_connection()
    try:
        usage_1 = monthly_usage(conn, 1, datetime.now(timezone.utc))
    finally:
        conn.close()
    assert usage_1 == 1, f"Dupa prima trimitere: asteptat usage=1, primit {usage_1}"

    # Retry (acelasi payload -> acelasi idempotency_key -> dedup, fara INSERT nou)
    r2 = client.post("/v1/prezentari", json={"prezentari": [prez_unic]})
    assert r2.status_code == 200, f"Retry trebuie sa treaca (dedup): {r2.text}"
    assert r2.json()["results"][0].get("deduped") is True, "Retry trebuia marcat deduped"

    conn = get_connection()
    try:
        usage_2 = monthly_usage(conn, 1, datetime.now(timezone.utc))
    finally:
        conn.close()
    assert usage_2 == 1, (
        f"Retry nu trebuia sa creasca usage: inainte={usage_1}, dupa retry={usage_2}"
    )


def test_dev_id1_neblocat(client):
    """Dev account (id=1) in dev mode (require_api_key=False) nu e blocat de gate-ul API.

    Bypass explicit in require_api_access: require_api_key=False + account_id==DEFAULT_ACCOUNT_ID
    -> skip gate, indiferent de tier. DB proaspata (0 submissions -> fara blocare volum).
    """
    _set_tier_acct(1, "free", trial_until=None)

    resp = client.post("/v1/prezentari", json={"prezentari": [_PREZ_PLAN]})
    assert resp.status_code == 200, (
        f"Dev id=1 nu trebuie blocat de gate-ul API in dev mode, "
        f"primit {resp.status_code}: {resp.text}"
    )


def test_flag_enforce_plans_false_sare_enforcement(client, monkeypatch):
    """Kill-switch AUTOPASS_ENFORCE_PLANS=false sare toate gate-urile de plan.

    T5 PRD 5.17: flag de operare pentru debugging sau rollback rapid fara revert de cod.
    Chiar si cu free la 60/60, nu trebuie 422 cand flag-ul e oprit.
    """
    from app.config import get_settings

    monkeypatch.setenv("AUTOPASS_ENFORCE_PLANS", "false")
    get_settings.cache_clear()

    # Cont dev (id=1) pe free la 60/60 (normalmente respins)
    _set_tier_acct(1, "free", trial_until=None)
    _insert_n_submissions(1, 60)

    resp = client.post("/v1/prezentari", json={"prezentari": [_PREZ_PLAN]})
    assert resp.status_code == 200, (
        f"Cu enforce_plans=False, enforcement trebuia sarat. Primit: {resp.status_code}"
    )

    get_settings.cache_clear()  # curata cache-ul dupa test