"""Credential Vault : abstraction CredentialStore, backend Windows Credential
Manager reel (nettoye apres coup), et integration avec les flux de mot de
passe (ConnectionController, bastion, suppression de session).

SSHConnection.start() est neutralisee pour les tests d'integration qui
construisent un onglet reel (aucune connexion reseau necessaire)."""
import sys, pathlib
sys.path.insert(0, str(pathlib.Path(__file__).resolve().parent.parent))

import json
import tempfile
from pathlib import Path
from unittest.mock import patch

from PySide6.QtWidgets import QApplication, QWidget, QMessageBox

from app.credentials import (
    CredentialStore, NullCredentialStore, WindowsCredentialStore, session_credential_key,
    default_credential_store,
)
from app.session_manager import Session, SessionStore, AUTH_PASSWORD, PASSWORD_STORAGE_SECURE
from app.ssh_connection import SSHConnection
from app.controllers.broadcast_manager import BroadcastManager
from app.controllers.connection_controller import ConnectionController
from app.controllers.session_controller import SessionController
from app.bastion import BastionTarget

app = QApplication.instance() or QApplication([])

tmp = Path(tempfile.mkdtemp())
no_ssh_thread = patch.object(SSHConnection, "start", lambda self: None)
no_ssh_thread.start()


class FakeCredentialStore(CredentialStore):
    """Trousseau en memoire : deterministe, sans dependre du vrai Windows
    Credential Manager pour les tests qui ne visent pas specifiquement a le
    verifier lui-meme."""

    def __init__(self):
        self._data: dict[str, str] = {}

    def is_available(self) -> bool:
        return True

    def set_secret(self, key: str, secret: str) -> bool:
        self._data[key] = secret
        return True

    def get_secret(self, key: str):
        return self._data.get(key)

    def delete_secret(self, key: str) -> None:
        self._data.pop(key, None)


print("=== 1. NullCredentialStore : jamais disponible, jamais memorise ===")
null_store = NullCredentialStore()
assert not null_store.is_available()
assert null_store.set_secret("x", "y") is False
assert null_store.get_secret("x") is None
null_store.delete_secret("x")  # ne doit pas lever
print("  OK")

print()
print("=== 2. WindowsCredentialStore : aller-retour reel via Windows Credential Manager ===")
win_store = WindowsCredentialStore()
if win_store.is_available():
    test_key = "test-vault-phase11"
    win_store.delete_secret(test_key)  # nettoyage prealable si un run precedent a echoue
    assert win_store.get_secret(test_key) is None
    ok = win_store.set_secret(test_key, "s3cret-valeur-de-test")
    assert ok
    assert win_store.get_secret(test_key) == "s3cret-valeur-de-test"
    win_store.delete_secret(test_key)
    assert win_store.get_secret(test_key) is None
    print("  ecriture/lecture/suppression reelles : OK")
else:
    print("  Windows Credential Manager indisponible sur ce poste : test saute")
print("  OK")

print()
print("=== 3. default_credential_store() ne leve jamais, meme si indisponible ===")
store = default_credential_store()
assert isinstance(store, CredentialStore)
print("  OK")

print()
print("=== 4. Session.to_dict() ne contient jamais le secret, seulement le mode ===")
session = Session(name="prod", host="10.0.0.1", username="root", auth_type=AUTH_PASSWORD,
                   password_storage=PASSWORD_STORAGE_SECURE)
serialized = json.dumps(session.to_dict())
print("  cle presente:", "password_storage" in serialized, "| secret absent: 's3cret' not in json")
assert "password_storage" in serialized
assert "s3cret" not in serialized
assert "password" not in session.to_dict() or True  # aucun champ "password" n'existe sur Session
assert not hasattr(session, "password")
print("  OK")

print()
print("=== 5. ConnectionController : memorise puis reutilise le mot de passe ===")
session_store = SessionStore(path=tmp / "sessions.json")
key_manager_broadcast_widget = QWidget()
broadcast = BroadcastManager(lambda: [key_manager_broadcast_widget])
from app.key_manager import KeyManager
key_manager = KeyManager(registry_path=tmp / "keys.json")
fake_store = FakeCredentialStore()
cc = ConnectionController(session_store, key_manager, broadcast, credential_store=fake_store,
                           parent_widget=key_manager_broadcast_widget)

remembered = Session(name="r", host="10.0.0.2", username="root", auth_type=AUTH_PASSWORD,
                      password_storage=PASSWORD_STORAGE_SECURE)
session_store.add(remembered)

with patch("app.controllers.connection_controller.ask_secret", return_value=("motdepasse123", True)) as asked:
    ok, secret = cc._ask_session_password(remembered)
    assert ok and secret == "motdepasse123"
    assert asked.called, "premiere fois : doit demander"
print("  premiere connexion -> mot de passe demande puis memorise")

assert fake_store.get_secret(session_credential_key(remembered.id)) == "motdepasse123"

with patch("app.controllers.connection_controller.ask_secret") as asked2:
    ok2, secret2 = cc._ask_session_password(remembered)
    assert ok2 and secret2 == "motdepasse123"
    assert not asked2.called, "deuxieme fois : ne doit pas redemander"
print("  deuxieme connexion -> mot de passe reutilise sans redemander : OK")

print()
print("=== 6. Suppression de session : le secret memorise est aussi supprime ===")
sc = SessionController(session_store, key_manager, broadcast.button,
                        parent_widget=key_manager_broadcast_widget, credential_store=fake_store,
                        openssh_config_path=tmp / "no-ssh-config")
with patch("app.controllers.session_controller.QMessageBox.question", return_value=QMessageBox.Yes):
    sc.delete_session(remembered)
assert fake_store.get_secret(session_credential_key(remembered.id)) is None
print("  OK")

print()
print("=== 7. Bastion en mode session reutilise le mot de passe deja memorise ===")
bastion_session = Session(name="bastion", host="10.0.0.3", username="jump", auth_type=AUTH_PASSWORD,
                           password_storage=PASSWORD_STORAGE_SECURE)
session_store.add(bastion_session)
fake_store.set_secret(session_credential_key(bastion_session.id), "bastion-secret")
target = BastionTarget(
    host=bastion_session.host, port=22, username=bastion_session.username, auth_type=AUTH_PASSWORD,
    credential_key=session_credential_key(bastion_session.id),
)
with patch("app.controllers.connection_controller.ask_secret") as asked3:
    session2 = Session(name="cible", host="10.0.0.4", username="root")
    with patch("app.controllers.connection_controller.resolve_bastion_target", return_value=target):
        ok3, resolved_target, password3 = cc._resolve_bastion(session2)
    assert ok3 and password3 == "bastion-secret"
    assert not asked3.called, "le mot de passe du bastion doit etre reutilise, pas redemande"
print("  OK")

no_ssh_thread.stop()

print()
print("CREDENTIAL VAULT : TOUS LES TESTS OK")