# #region IntegrationTestConftest [C:3] [TYPE Module] [SEMANTICS test, conftest, testcontainers, postgres, integration]
# @BRIEF Shared pytest fixtures for integration tests using Testcontainers PostgreSQL.
# @RELATION BINDS_TO -> [TranslationJob]
# @RELATION BINDS_TO -> [TranslationRun]
# @RELATION BINDS_TO -> [TerminologyDictionary]
# @PRE Docker daemon is running and accessible.
# @POST PostgreSQL container is started, tables created, session available per test.
# @RATIONALE
#   Architecture:
#   - Testcontainers spins up a real PostgreSQL 16 container per session.
#   - Each test gets an isolated session with transaction rollback.
#   - FK constraints, JSON columns, indexes — all behave like production.
#
#   Why Testcontainers over SQLite:
#   - SQLite silently ignores FK violations in some edge cases.
#   - JSON column behavior differs (PostgreSQL JSONB vs SQLite JSON text).
#   - Index behavior, constraint names, and error messages differ.
#   - Production parity — catches bugs that SQLite tests miss.
#
# @REJECTED
#   Always-on PostgreSQL — requires manual setup, not portable.
#   Docker Compose for tests — slower startup, harder isolation.
#   Shared container across tests — state leakage between tests.
import os
import sys
import time
from pathlib import Path

import pytest
import requests
from sqlalchemy import create_engine, event, text
from sqlalchemy.orm import Session, sessionmaker

sys.path.insert(0, str(Path(__file__).parent.parent.parent / "src"))

from src.core.database import Base

# Import all models to ensure tables are created
from src.models.translate import (  # noqa: F401
    DictionaryEntry,
    MetricSnapshot,
    TerminologyDictionary,
    TranslationBatch,
    TranslationEvent,
    TranslationJob,
    TranslationJobDictionary,
    TranslationLanguage,
    TranslationPreviewLanguage,
    TranslationPreviewRecord,
    TranslationPreviewSession,
    TranslationRecord,
    TranslationRun,
    TranslationRunLanguageStats,
    TranslationSchedule,
)
from src.models.llm import (  # noqa: F401
    LLMProvider,
    ValidationPolicy,
    ValidationRun,
    ValidationRecord,
    ValidationSource,
)
from src.models.maintenance import (  # noqa: F401
    MaintenanceEvent,
    MaintenanceDashboardBanner,
    MaintenanceDashboardState,
    MaintenanceSettings,
    MaintenanceEventStatus,
    MaintenanceDashboardBannerStatus,
    MaintenanceDashboardStateStatus,
    DashboardScope,
)
from src.models.task import (  # noqa: F401
    TaskRecord,
    TaskLogRecord,
)
from src.models.mapping import Environment  # noqa: F401


# #region postgres_container [C:2] [TYPE Fixture]
# @BRIEF Session-scoped Testcontainers PostgreSQL container.
@pytest.fixture(scope="session")
def postgres_container():
    """Start a PostgreSQL 16 container for the test session."""
    from testcontainers.postgres import PostgresContainer

    with PostgresContainer(
        image="postgres:16-alpine",
        username="test",
        password="test",
        dbname="test_translate",
    ) as pg:
        yield pg
# #endregion postgres_container


# #region pg_engine [C:2] [TYPE Fixture]
# @BRIEF SQLAlchemy engine connected to the Testcontainers PostgreSQL.
@pytest.fixture(scope="session")
def pg_engine(postgres_container):
    """Create engine and tables once per session."""
    url = postgres_container.get_connection_url()
    engine = create_engine(url, echo=False)

    # Create all tables
    Base.metadata.create_all(bind=engine)

    yield engine

    # Cleanup
    Base.metadata.drop_all(bind=engine)
    engine.dispose()
# #endregion pg_engine


# #region db_session [C:2] [TYPE Fixture]
# @BRIEF Per-test database session with transaction rollback for isolation.
@pytest.fixture
def db_session(pg_engine):
    """Provide a transactional database session that rolls back after each test.

    This ensures test isolation — each test starts with a clean database state.
    Uses connection-level transaction to wrap all operations.
    """
    connection = pg_engine.connect()
    transaction = connection.begin()

    session = sessionmaker(bind=connection)()

    # Join the outer transaction
    session.begin_nested()

    @event.listens_for(session, "after_transaction_end")
    def restart_savepoint(session, transaction):
        if transaction.nested and not transaction._parent.nested:
            session.begin_nested()

    try:
        yield session
    finally:
        session.close()
        transaction.rollback()
        connection.close()
# #endregion db_session


# #region mock_config_manager [C:2] [TYPE Fixture]
# @BRIEF Mock ConfigManager for integration tests.
@pytest.fixture
def mock_config_manager():
    """Provide a mock ConfigManager that returns test environment."""
    from unittest.mock import MagicMock
    from src.core.config_models import Environment

    config_manager = MagicMock()
    config_manager.get_environments.return_value = [
        Environment(
            id="test_env",
            name="Test Environment",
            url="http://superset:8088",
            username="admin",
            password="admin",
        )
    ]
    config_manager.get_environment.return_value = Environment(
        id="test_env",
        name="Test Environment",
        url="http://superset:8088",
        username="admin",
        password="admin",
    )
    config_manager.get_config.return_value = MagicMock()
    return config_manager
# #endregion mock_config_manager


# #region verify_postgres_features [C:2] [TYPE Function]
# @BRIEF Helper to verify PostgreSQL-specific features are working.
def verify_postgres_features(session: Session) -> dict:
    """Verify that PostgreSQL-specific features are available.

    Returns a dict with feature availability status.
    """
    features = {}

    # Check JSON support
    try:
        result = session.execute(text("SELECT '{}'::jsonb")).scalar()
        features["jsonb"] = result is not None
    except Exception:
        features["jsonb"] = False

    # Check FK constraints
    try:
        result = session.execute(text(
            "SELECT COUNT(*) FROM information_schema.table_constraints "
            "WHERE constraint_type = 'FOREIGN KEY'"
        )).scalar()
        features["foreign_keys"] = result > 0
    except Exception:
        features["foreign_keys"] = False

    # Check indexes
    try:
        result = session.execute(text(
            "SELECT COUNT(*) FROM pg_indexes WHERE schemaname = 'public'"
        )).scalar()
        features["indexes"] = result > 0
    except Exception:
        features["indexes"] = False

    return features
# #endregion verify_postgres_features


# ── Superset Integration Test Fixtures ────────────────────────────────


# #region superset_db_url [C:2] [TYPE Fixture]
# @BRIEF Session-scoped — creates a separate 'superset_meta' database in the Postgres container.
@pytest.fixture(scope="session")
def superset_db_url(postgres_container):
    """Create a dedicated database for Superset metadata inside the shared Postgres."""
    import psycopg2

    conn = psycopg2.connect(
        host=postgres_container.get_container_host_ip(),
        port=postgres_container.get_exposed_port(5432),
        user="test",
        password="test",
        dbname="test_translate",
    )
    conn.autocommit = True

    with conn.cursor() as cur:
        cur.execute("DROP DATABASE IF EXISTS superset_meta")
        cur.execute("CREATE DATABASE superset_meta")

    conn.close()

    # Build a Superset-compatible SQLALCHEMY_DATABASE_URI.
    # CRITICAL: cannot use "localhost" because from inside the Superset container,
    # "localhost" is the container itself. Must use the Docker bridge IP of the
    # Postgres container so that the Superset container can reach it.
    pg_container = postgres_container.get_wrapped_container()
    pg_container.reload()
    pg_ip = pg_container.attrs["NetworkSettings"]["Networks"]["bridge"]["IPAddress"]
    pg_port = 5432  # internal port, not exposed port
    superset_url = (
        f"postgresql+psycopg2://test:test@{pg_ip}:{pg_port}/superset_meta"
    )
    return superset_url
# #endregion superset_db_url


# #region superset_secret_key [C:1] [TYPE Fixture]
# @BRIEF Session-scoped — deterministic secret key for the Superset instance.
@pytest.fixture(scope="session")
def superset_secret_key():
    return "test-superset-secret-key-for-integration-tests-xyz"
# #endregion superset_secret_key


# #region superset_admin_password [C:1] [TYPE Fixture]
# @BRIEF Password for the pre-created admin user in the Superset container.
@pytest.fixture(scope="session")
def superset_admin_password():
    return "admin123"
# #endregion superset_admin_password


# #region superset_container [C:3] [TYPE Fixture]
# @BRIEF Session-scoped Apache Superset container — db upgrade → admin → init → web server.
# @PRE Docker daemon is running. superset_db_url points to an empty Postgres database.
# @POST Superset web server is listening on port 8088. Admin user created.
# @SIDE_EFFECT Spins up a short-lived init container, then a long-lived web container.
# @RATIONALE Two-container approach (init + web) avoids race conditions where the web
#   server starts before migrations have completed. The init container runs `superset db
#   upgrade`, creates the admin user, and runs `superset init`, then exits. The web
#   container then starts against the fully initialized database.
# @REJECTED Single container with sequential exec calls — cannot change entrypoint
#   from init to web server within the same container lifecycle.
# @REJECTED Using `latest` tag — version drift breaks tests silently.
@pytest.fixture(scope="session")
def superset_container(superset_db_url, superset_secret_key, superset_admin_password):
    """Start an Apache Superset instance for integration testing."""
    from testcontainers.core.container import DockerContainer

    superset_image = "apache/superset:4.1.2"

    # Superset ignores SQLALCHEMY_DATABASE_URI env var — we must create
    # superset_config.py and point SUPERSET_CONFIG_PATH to it.
    _bootstrap_config = (
        "cat > /tmp/superset_config.py << \"PYEOF\"\n"
        "import os\n"
        "SQLALCHEMY_DATABASE_URI = os.environ.get(\"SUPERSET_DB_URI\", \"sqlite://\")\n"
        "PYEOF\n"
    )
    _export_config = "export SUPERSET_CONFIG_PATH=/tmp/superset_config.py"

    # ── Step 1: Init container ──
    init = DockerContainer(superset_image)
    init.with_env("SUPERSET_SECRET_KEY", superset_secret_key)
    init.with_env("SUPERSET_DB_URI", superset_db_url)
    init.with_env("SUPERSET_LOAD_EXAMPLES", "no")
    init.with_env("FLASK_APP", "superset")
    init.with_command(
        f"sh -c '"
        f"python -m pip install psycopg2-binary -q && "
        f"{_bootstrap_config}"
        f"{_export_config} && "
        f"superset db upgrade && "
        f"superset fab create-admin "
        f"  --username admin --firstname Admin --lastname User "
        f"  --email admin@test.local --password {superset_admin_password} && "
        f"superset init"
        f"'"
    )

    try:
        init.start()
        # Block until the init command completes (container exits)
        init.get_wrapped_container().wait()
        exit_code = init.get_wrapped_container().attrs["State"]["ExitCode"]
        if exit_code != 0:
            logs = init.get_logs()
            init.stop()
            raise RuntimeError(
                f"Superset init container failed (exit {exit_code}):\n{logs}"
            )
    finally:
        init.stop()

    # ── Step 2: Web server container ──
    superset = DockerContainer(superset_image)
    superset.with_env("SUPERSET_SECRET_KEY", superset_secret_key)
    superset.with_env("SUPERSET_DB_URI", superset_db_url)
    superset.with_env("SUPERSET_LOAD_EXAMPLES", "no")
    superset.with_env("FLASK_APP", "superset")
    superset.with_command(
        f"sh -c '"
        f"python -m pip install psycopg2-binary -q && "
        f"{_bootstrap_config}"
        f"{_export_config} && "
        f"superset run -h 0.0.0.0 -p 8088 --with-threads'"
    )
    superset.with_exposed_ports(8088)

    superset.start()

    # Wait for the /health endpoint to respond
    host = superset.get_container_host_ip()
    port = superset.get_exposed_port(8088)
    health_url = f"http://{host}:{port}/health"

    deadline = time.time() + 90
    last_error = None

    while time.time() < deadline:
        try:
            resp = requests.get(health_url, timeout=3)
            if resp.status_code == 200:
                break
        except requests.RequestException as e:
            last_error = e
        time.sleep(2)
    else:
        logs = superset.get_logs()
        superset.stop()
        raise TimeoutError(
            f"Superset did not become healthy within 90s. "
            f"Last error: {last_error}\nContainer logs:\n{logs}"
        )

    yield superset

    superset.stop()
# #endregion superset_container


# #region superset_url [C:1] [TYPE Fixture]
# @BRIEF Function-scoped — base URL of the running Superset container.
@pytest.fixture
def superset_url(superset_container):
    host = superset_container.get_container_host_ip()
    port = superset_container.get_exposed_port(8088)
    return f"http://{host}:{port}"
# #endregion superset_url


# #region superset_admin_headers [C:2] [TYPE Fixture]
# @BRIEF Function-scoped — authenticated session headers for Superset admin API calls.
@pytest.fixture
def superset_admin_headers(superset_url, superset_admin_password):
    """Log in as admin and return headers with CSRF token and session cookie."""
    session = requests.Session()

    # Step 1: Get CSRF token from login page
    login_url = f"{superset_url}/login/"
    resp = session.get(login_url, timeout=10)
    resp.raise_for_status()

    csrf_token = None
    if "csrf_token" in resp.text:
        import re
        match = re.search(r'csrf_token"\s*:\s*"([^"]+)"', resp.text)
        if match:
            csrf_token = match.group(1)

    # Step 2: Submit login form
    resp = session.post(
        login_url,
        data={
            "username": "admin",
            "password": superset_admin_password,
            "csrf_token": csrf_token or "",
        },
        headers={"Referer": login_url},
        timeout=10,
    )
    resp.raise_for_status()

    return session
# #endregion superset_admin_headers


# ── JWT-based Superset Fixtures ────────────────────────────────────
# ADR-0012: после установки psycopg2 + superset_config.py + Docker bridge IP,
# JWT-авторизация (/api/v1/security/login) работает в тестовом контейнере.


# #region superset_jwt_headers [C:2] [TYPE Fixture]
# @BRIEF Function-scoped — JWT Bearer token headers for Superset REST API.
# @POST Returns dict with Authorization: Bearer <access_token>.
@pytest.fixture
def superset_jwt_headers(superset_url, superset_admin_password):
    """Obtain JWT access token from the running Superset container."""
    resp = requests.post(
        f"{superset_url}/api/v1/security/login",
        json={
            "username": "admin",
            "password": superset_admin_password,
            "provider": "db",
        },
        timeout=10,
    )
    resp.raise_for_status()
    data = resp.json()
    access_token = data["access_token"]
    assert access_token, "No access_token in JWT response"
    return {"Authorization": f"Bearer {access_token}"}
# #endregion superset_jwt_headers


# #region superset_env [C:2] [TYPE Fixture]
# @BRIEF Function-scoped — real Environment pointing to the running Superset container.
@pytest.fixture
def superset_env(superset_url, superset_admin_password):
    """Create a real Environment config pointing to the Superset container."""
    from src.core.config_models import Environment

    return Environment(
        id="test_env",
        name="Test Superset Container",
        url=superset_url,
        username="admin",
        password=superset_admin_password,
        verify_ssl=False,
        timeout=30,
    )
# #endregion superset_env


# #region superset_client [C:2] [TYPE Fixture]
# @BRIEF Function-scoped — real SupersetClient connected to the container.
@pytest.fixture
async def superset_client(superset_env):
    """Create and authenticate a SupersetClient against the real container."""
    from src.core.superset_client import SupersetClient

    client = SupersetClient(superset_env)
    await client.authenticate()
    return client
# #endregion superset_client


# #endregion IntegrationTestConftest