"""
Контракт DAG generator_control без запуска Airflow.
"""

import ast
from pathlib import Path

from clickstream_generator.launch import PROFILES


DAG_PATH = Path(__file__).parents[2] / "airflow" / "dags" / "generator_control_dag.py"
REPO_ROOT = Path(__file__).parents[2]


def _tree():
    return ast.parse(DAG_PATH.read_text(encoding="utf-8"))


def test_dag_file_exists_and_uses_dynamic_profiles():
    """DAG берёт варианты профилей из PROFILES, а не из ручного списка."""
    text = DAG_PATH.read_text(encoding="utf-8")

    assert "dag_id=\"generator_control\"" in text
    assert "sorted(PROFILES)" in text
    for profile in PROFILES:
        assert profile not in {"hardcoded-profile"}


def test_trigger_form_has_expected_param_enums():
    """Форма запуска ограничивает операции и профили."""
    text = DAG_PATH.read_text(encoding="utf-8")

    assert 'enum=["backfill", "import", "check"]' in text
    assert "enum=sorted(PROFILES)" in text
    assert '"duration": Param(' in text
    assert '"artifact_path": Param(' in text


def test_dag_branches_and_waits_for_etl_completion():
    """Backfill/import запускают ETL и ждут его завершения перед check."""
    text = DAG_PATH.read_text(encoding="utf-8")

    assert "BranchPythonOperator" in text
    assert "TriggerDagRunOperator" in text
    assert 'trigger_dag_id="etl_pipeline"' in text
    assert "wait_for_completion=True" in text
    assert 'allowed_states=["success"]' in text
    assert 'failed_states=["failed"]' in text


def test_no_docker_or_continue_operation_in_dag():
    """Пульт не управляет Docker и не содержит операцию continue."""
    text = DAG_PATH.read_text(encoding="utf-8")

    assert "docker" not in text.lower()
    assert '"continue"' not in text


def test_compose_mounts_generator_code_without_socket_and_gates_live_service():
    """Airflow видит код генератора, но не получает Docker socket."""
    text = (REPO_ROOT / "docker-compose.yml").read_text(encoding="utf-8")

    assert "PYTHONPATH: /opt/airflow/generator_src" in text
    assert "./generator/src:/opt/airflow/generator_src:ro" in text
    assert "/var/run/docker.sock" not in text
    assert "profiles:\n      - live-generator" in text


def test_airflow_and_generator_kafka_dependency_versions_match():
    """Airflow и генератор используют одну версию kafka-python."""
    airflow_req = (REPO_ROOT / "airflow" / "requirements.txt").read_text(encoding="utf-8")
    generator_req = (REPO_ROOT / "generator" / "requirements.txt").read_text(encoding="utf-8")

    assert "kafka-python==2.0.6" in airflow_req
    assert "kafka-python==2.0.6" in generator_req
    assert "prometheus-client==0.21.1" in airflow_req