"""Teste US-013 (PRD 5.20): retragere coloana legacy accounts.rar_creds_enc.

Teste:
  test_niciun_read_pe_coloana_veche       -- DB fresh: accounts N-are rar_creds_enc, submissions ARE
  test_conturi_rar_creds_env_aware        -- POST /v1/conturi/rar-creds scrie in slotul per-env corect
  test_are_creds_pe_per_env               -- are_creds (web/integrare) reflecta sloturile per-env
  test_drop_cu_garda_blocat_daca_lipsa_copiere -- garda refuza DROP cand exista orfane
"""

from __future__ import annotations

import os
import sqlite3
import tempfile

import pytest
from cryptography.fernet import Fernet
from starlette.testclient import TestClient


# ---------------------------------------------------------------------------
# Fixture
# ---------------------------------------------------------------------------


@pytest.fixture()
def client(monkeypatch):
    """Client izolat cu DB temporara + cheie Fernet pentru criptare creds."""
    tmp = tempfile.mkdtemp()
    monkeypatch.setenv("AUTOPASS_DB_PATH", os.path.join(tmp, "t_retragere.db"))
    monkeypatch.setenv("AUTOPASS_CREDS_KEY", Fernet.generate_key().decode())
    monkeypatch.setenv("AUTOPASS_RAR_ENV", "test")
    monkeypatch.setenv("AUTOPASS_WEB_AUTH_REQUIRED", "false")
    from app.config import get_settings
    from app import crypto

    get_settings.cache_clear()
    crypto.reset_cache()
    from app.main import app

    with TestClient(app, follow_redirects=False) as c:
        yield c

    get_settings.cache_clear()
    crypto.reset_cache()


@pytest.fixture()
def conn_izolat(monkeypatch):
    """Conexiune directa la DB temporara (fara app), pentru teste de migrare in-process."""
    tmp = tempfile.mkdtemp()
    db_path = os.path.join(tmp, "t_migrare.db")
    monkeypatch.setenv("AUTOPASS_DB_PATH", db_path)
    monkeypatch.setenv("AUTOPASS_CREDS_KEY", Fernet.generate_key().decode())
    monkeypatch.setenv("AUTOPASS_RAR_ENV", "test")
    from app.config import get_settings
    from app import crypto

    get_settings.cache_clear()
    crypto.reset_cache()
    from app.db import init_db, get_connection

    init_db()
    conn = get_connection()
    conn.row_factory = sqlite3.Row
    yield conn
    conn.close()
    get_settings.cache_clear()
    crypto.reset_cache()


# ---------------------------------------------------------------------------
# Helpere
# ---------------------------------------------------------------------------


def _create_account_user(
    name: str = "Service Test SRL",
    email: str = "user@test.com",
    password: str = "parolasecreta10",
):
    """Creeaza cont + user. Returneaza (acct_id, user_id)."""
    from app.accounts import create_account
    from app.users import create_user
    from app.db import get_connection

    conn = get_connection()
    try:
        acct_id = create_account(conn, name, active=True)
        user_id = create_user(conn, acct_id, email, password)
        return acct_id, user_id
    finally:
        conn.close()


def _login_web(client, email: str, password: str) -> None:
    """Face login prin HTTP si seteaza cookie-ul de sesiune."""
    import re
    resp = client.get("/login")
    assert resp.status_code == 200
    m = re.search(r'name="csrf_token"\s+value="([^"]+)"', resp.text)
    if not m:
        m = re.search(r'value="([^"]+)"\s+name="csrf_token"', resp.text)
    assert m, "csrf_token negasit pe /login"
    csrf = m.group(1)
    resp = client.post("/login", data={"email": email, "parola": password, "csrf_token": csrf})
    assert resp.status_code == 303, f"Login esuat: {resp.status_code} {resp.text[:200]}"


# ---------------------------------------------------------------------------
# Teste
# ---------------------------------------------------------------------------


def test_niciun_read_pe_coloana_veche(client):
    """DB fresh dupa init_db NU are accounts.rar_creds_enc; submissions INCA are rar_creds_enc."""
    from app.db import get_connection

    conn = get_connection()
    try:
        acc_cols = {r["name"] for r in conn.execute("PRAGMA table_info(accounts)").fetchall()}
        sub_cols = {r["name"] for r in conn.execute("PRAGMA table_info(submissions)").fetchall()}
    finally:
        conn.close()

    assert "rar_creds_enc" not in acc_cols, (
        "accounts.rar_creds_enc INCA prezenta dupa init_db pe DB fresh — DROP esuat sau schema neactualizata"
    )
    assert "rar_creds_enc" in sub_cols, (
        "submissions.rar_creds_enc TREBUIE sa ramana (creds efemere per-cerere)"
    )


def test_conturi_rar_creds_env_aware(client):
    """POST /v1/conturi/rar-creds cu rar_target='test' scrie in rar_creds_test_enc + rar_test_enabled=1.
    Fara rar_target -> scrie in slotul ancorei globale (AUTOPASS_RAR_ENV='test').
    """
    from app.db import get_connection

    acct_id, _ = _create_account_user("Firma ENV1", "env1@test.com")
    acct2_id, _ = _create_account_user("Firma ENV2", "env2@test.com")

    # Cu rar_target='test' explicit
    resp = client.post(
        "/v1/conturi/rar-creds",
        json={"email": "rar@firma.ro", "password": "parolatest", "rar_target": "test"},
        headers={"X-Account-ID": str(acct_id)},
    )
    # Fara cheie API in dev, cont implicit id=1; dar testam prin conn directa
    # POST cu rar_target='test' pe contul 1 (dev, WEB_AUTH_REQUIRED=false)
    resp_t = client.post(
        "/v1/conturi/rar-creds",
        json={"email": "rar_test@firma.ro", "password": "parolatest123", "rar_target": "test"},
    )
    assert resp_t.status_code == 200, f"set_rar_creds(test) esuat: {resp_t.text}"
    body_t = resp_t.json()
    assert body_t.get("ok") is True
    assert body_t.get("rar_env") == "test", f"rar_env asteptat 'test', primit: {body_t}"

    conn = get_connection()
    try:
        row_t = conn.execute(
            "SELECT rar_creds_test_enc, rar_test_enabled FROM accounts WHERE id=1"
        ).fetchone()
    finally:
        conn.close()

    assert row_t["rar_creds_test_enc"] is not None, "rar_creds_test_enc trebuia scris"
    assert row_t["rar_test_enabled"] == 1, "rar_test_enabled trebuia setat la 1"

    # Fara rar_target -> ancora globala = 'test' (AUTOPASS_RAR_ENV=test)
    resp_n = client.post(
        "/v1/conturi/rar-creds",
        json={"email": "rar_noenv@firma.ro", "password": "paroladefault"},
    )
    assert resp_n.status_code == 200, f"set_rar_creds(no env) esuat: {resp_n.text}"
    body_n = resp_n.json()
    assert body_n.get("rar_env") == "test", f"rar_env implicit asteptat 'test': {body_n}"

    # Cu rar_target='prod' -> scrie in rar_creds_prod_enc
    resp_p = client.post(
        "/v1/conturi/rar-creds",
        json={"email": "rar_prod@firma.ro", "password": "parolaprod456", "rar_target": "prod"},
    )
    assert resp_p.status_code == 200, f"set_rar_creds(prod) esuat: {resp_p.text}"
    body_p = resp_p.json()
    assert body_p.get("rar_env") == "prod", f"rar_env asteptat 'prod': {body_p}"

    conn = get_connection()
    try:
        row_p = conn.execute(
            "SELECT rar_creds_prod_enc, rar_prod_enabled FROM accounts WHERE id=1"
        ).fetchone()
    finally:
        conn.close()

    assert row_p["rar_creds_prod_enc"] is not None, "rar_creds_prod_enc trebuia scris la rar_target=prod"
    assert row_p["rar_prod_enabled"] == 1, "rar_prod_enabled trebuia setat la 1"


def test_are_creds_pe_per_env(client):
    """GET /v1/ping are_creds_rar/are_creds_test/are_creds_prod reflecta sloturile per-env.
    Fara creds -> are_creds_rar=False. Cu creds test -> are_creds_test=True, are_creds_rar=True.
    """
    # Stare initiala: niciun slot cu creds
    resp0 = client.get("/v1/ping")
    assert resp0.status_code == 200
    body0 = resp0.json()
    assert body0.get("are_creds_rar") is False, f"are_creds_rar asteptat False initial: {body0}"
    assert body0.get("are_creds_test") is False, f"are_creds_test asteptat False: {body0}"
    assert body0.get("are_creds_prod") is False, f"are_creds_prod asteptat False: {body0}"

    # Seteaza creds test
    client.post(
        "/v1/conturi/rar-creds",
        json={"email": "rar@test.ro", "password": "parola123", "rar_target": "test"},
    )

    resp1 = client.get("/v1/ping")
    assert resp1.status_code == 200
    body1 = resp1.json()
    assert body1.get("are_creds_rar") is True, f"are_creds_rar asteptat True dupa set test: {body1}"
    assert body1.get("are_creds_test") is True, f"are_creds_test asteptat True: {body1}"
    assert body1.get("are_creds_prod") is False, f"are_creds_prod asteptat False: {body1}"

    # DELETE ?env=test -> test dispare, prod ramane False
    resp_d = client.delete("/v1/conturi/rar-creds?env=test")
    assert resp_d.status_code == 200

    resp2 = client.get("/v1/ping")
    body2 = resp2.json()
    assert body2.get("are_creds_rar") is False, f"are_creds_rar asteptat False dupa delete test: {body2}"
    assert body2.get("are_creds_test") is False


def test_drop_cu_garda_blocat_daca_lipsa_copiere(conn_izolat):
    """Garda refuza DROP cand exista cont cu rar_creds_enc dar ambele sloturi per-env goale.

    Apelam _garda_si_drop direct (fara re-backfill 6c) pe o stare adversariala:
    cont cu valoare in coloana legacy, rar_creds_test_enc=NULL, rar_creds_prod_enc=NULL.
    Rezultat asteptat: DROP refuzat (coloana inca prezenta pe accounts).
    """
    conn = conn_izolat

    # Adaugam manual coloana legacy daca nu exista (DB fresh a dropat-o deja prin _drop_legacy)
    acc_cols = {r["name"] for r in conn.execute("PRAGMA table_info(accounts)").fetchall()}
    if "rar_creds_enc" not in acc_cols:
        conn.execute("ALTER TABLE accounts ADD COLUMN rar_creds_enc TEXT")
        conn.commit()

    # Stare adversariala: insert valoare dummy in coloana legacy, sloturi per-env goale
    conn.execute(
        "UPDATE accounts SET rar_creds_enc='DUMMY_CRIPTAT', "
        "rar_creds_test_enc=NULL, rar_creds_prod_enc=NULL WHERE id=1"
    )
    conn.commit()

    # Verifica ca starea adversariala e corecta inainte de test
    row_before = conn.execute(
        "SELECT rar_creds_enc, rar_creds_test_enc, rar_creds_prod_enc FROM accounts WHERE id=1"
    ).fetchone()
    assert row_before["rar_creds_enc"] == "DUMMY_CRIPTAT"
    assert row_before["rar_creds_test_enc"] is None
    assert row_before["rar_creds_prod_enc"] is None

    # Apelam _garda_si_drop direct (fara re-backfill 6c)
    from app.db import _garda_si_drop
    _garda_si_drop(conn)

    # Garda trebuia sa refuze DROP-ul: coloana rar_creds_enc inca prezenta pe accounts
    acc_cols_after = {r["name"] for r in conn.execute("PRAGMA table_info(accounts)").fetchall()}
    assert "rar_creds_enc" in acc_cols_after, (
        "Garda a permis DROP cand exista orfane — pierdere de date (BUG CRITIC)"
    )

    # Valoarea legacy trebuie sa fie inca prezenta (neatinsa)
    row_after = conn.execute(
        "SELECT rar_creds_enc FROM accounts WHERE id=1"
    ).fetchone()
    assert row_after["rar_creds_enc"] == "DUMMY_CRIPTAT", (
        "Valoarea rar_creds_enc disparuta desi DROP a fost refuzat"
    )