"""
Unit tests for SitomatCallbackOperator (F16 Pipeline Hub Integration).
Menggunakan unittest.mock standar tanpa dependensi eksternal tambahan.
"""

import os
import sys
import pytest
from unittest.mock import patch, MagicMock

# Ensure airflow/dags directory is on python path
DAGS_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "dags"))
if DAGS_DIR not in sys.path:
    sys.path.insert(0, DAGS_DIR)

from helpers.sitomat_callback_operator import SitomatCallbackOperator, create_sitomat_session


class TestSitomatCallbackOperator:

    def test_invalid_layer_raises_value_error(self):
        with pytest.raises(ValueError, match="Layer 'platinum' tidak valid"):
            SitomatCallbackOperator(
                task_id="test_invalid_layer",
                run_id="run-123",
                layer="platinum",
                artifact_ref="table.name"
            )

    def test_mock_mode_execution(self):
        operator = SitomatCallbackOperator(
            task_id="test_mock",
            run_id="run-001",
            layer="bronze",
            artifact_ref="iceberg.bronze.permits",
            checksum="sha256-mock",
            mock_mode=True
        )
        result = operator.execute()
        assert result["status"] == "mock_success"
        assert result["acknowledged"] is True
        assert result["layer"] == "bronze"
        assert result["runId"] == "run-001"

    @patch("helpers.sitomat_callback_operator.create_sitomat_session")
    def test_successful_bronze_callback(self, mock_create_session):
        mock_session = MagicMock()
        mock_response = MagicMock()
        mock_response.status_code = 201
        mock_response.json.return_value = {"success": True, "versionId": "v1-uuid", "layer": "bronze"}
        mock_session.post.return_value = mock_response
        mock_create_session.return_value = mock_session

        sitomat_url = "http://sitomat.bpkp.go.id:3000"
        run_id = "run-20261005-001"

        operator = SitomatCallbackOperator(
            task_id="test_bronze_callback",
            run_id=run_id,
            layer="bronze",
            artifact_ref="lakehouse.bronze.permits_cdc",
            checksum="sha256-111",
            sitomat_base_url=sitomat_url,
            api_key="secret-pipeline-key",
            metadata_payload={"record_count": 8, "ge_status": "PASSED"},
            mock_mode=False
        )

        result = operator.execute()
        assert result["status"] == "success"
        assert result["statusCode"] == 201
        assert result["response"]["versionId"] == "v1-uuid"
        mock_session.post.assert_called_once()

    @patch("helpers.sitomat_callback_operator.create_sitomat_session")
    def test_idempotent_replay_conflict_409(self, mock_create_session):
        mock_session = MagicMock()
        mock_response = MagicMock()
        mock_response.status_code = 409
        mock_response.text = "conflict_artifact: run already registered"
        mock_session.post.return_value = mock_response
        mock_create_session.return_value = mock_session

        sitomat_url = "http://sitomat.bpkp.go.id:3000"
        run_id = "run-20261005-002"

        operator = SitomatCallbackOperator(
            task_id="test_conflict_silver",
            run_id=run_id,
            layer="silver",
            artifact_ref="lakehouse.silver.permits_clean",
            derived_from_version_id="v1-uuid",
            checksum="sha256-222",
            sitomat_base_url=sitomat_url,
            mock_mode=False
        )

        result = operator.execute()
        assert result["status"] == "conflict_acknowledged"
        assert result["statusCode"] == 409
        assert "conflict_artifact" in result["response"]

    @patch("helpers.sitomat_callback_operator.create_sitomat_session")
    def test_connection_error_graceful_handling(self, mock_create_session):
        import requests
        mock_session = MagicMock()
        mock_session.post.side_effect = requests.exceptions.ConnectionError("Connection refused to Sitomat")
        mock_create_session.return_value = mock_session

        operator = SitomatCallbackOperator(
            task_id="test_conn_error",
            run_id="run-unreachable",
            layer="gold",
            artifact_ref="lakehouse.gold.mart",
            sitomat_base_url="http://192.0.2.1:9999",
            mock_mode=False
        )

        result = operator.execute()
        assert result["status"] == "connection_warning"
        assert result["acknowledged"] is False
        assert "Connection refused" in result["error"]