"""Redis E2E tests verifying integration with investigation pipeline.

Tests:
- Redis config resolution from store and env
- Redis verification (ping, server info)
- Redis source detection in investigation state
- Redis tools availability for query execution
"""

from __future__ import annotations

import json
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest

from integrations.catalog import classify_integrations as _classify_integrations
from integrations.verify import verify_integrations
from tests.e2e.source_helpers import resolve_available_tool_sources


class TestRedisIntegrationResolution:
    """Test Redis config resolution from multiple sources."""

    def test_redis_resolution_from_store(self):
        """Redis integration correctly resolved from local store."""
        integrations = [
            {
                "id": "redis-prod",
                "service": "redis",
                "status": "active",
                "credentials": {
                    "host": "prod-cache.redis.internal",
                    "port": 6380,
                    "username": "monitor",
                    "password": "s3cret",
                    "db": 1,
                    "ssl": True,
                },
            }
        ]
        resolved = _classify_integrations(integrations)

        assert "redis" in resolved
        assert resolved["redis"]["host"] == "prod-cache.redis.internal"
        assert resolved["redis"]["port"] == 6380
        assert resolved["redis"]["username"] == "monitor"
        assert resolved["redis"]["db"] == 1
        assert resolved["redis"]["ssl"] is True

    def test_redis_invalid_config_skipped(self):
        """Invalid Redis integration config is safely skipped."""
        integrations = [
            {
                "id": "bad-redis",
                "service": "redis",
                "status": "active",
                "credentials": {
                    "host": "",
                },
            }
        ]
        resolved = _classify_integrations(integrations)

        # Should not include Redis if host is empty
        assert resolved.get("redis") is None


class TestRedisToolSourceAvailability:
    """Test Redis source availability in the tool-registry investigation path."""

    def test_redis_tool_source_available_from_resolved_integration(self):
        """Redis source is available when a configured integration exists."""
        resolved_integrations = {
            "redis": {
                "host": "localhost",
                "port": 6379,
                "username": "",
                "password": "",
                "db": 0,
                "ssl": False,
            }
        }

        sources = resolve_available_tool_sources(resolved_integrations)

        assert "redis" in sources
        assert sources["redis"]["host"] == "localhost"
        assert sources["redis"]["port"] == 6379

    def test_redis_tool_source_uses_configured_db(self):
        """Redis tool params come from the resolved integration config."""
        resolved_integrations = {
            "redis": {
                "host": "localhost",
                "port": 6379,
                "username": "",
                "password": "",
                "db": 3,
                "ssl": False,
            }
        }

        sources = resolve_available_tool_sources(resolved_integrations)

        assert "redis" in sources
        assert sources["redis"]["db"] == 3

    def test_redis_tool_source_unavailable_if_unconfigured(self):
        """Redis source is not included if not configured."""
        resolved_integrations = {}

        sources = resolve_available_tool_sources(resolved_integrations)

        assert "redis" not in sources


class TestRedisVerification:
    """Test Redis integration verification flow."""

    @patch("integrations.redis._get_client")
    def test_verify_redis_success(self, mock_get_client):
        """Redis verification succeeds with valid config."""
        mock_client = MagicMock()
        mock_client.ping.return_value = True
        mock_client.info.return_value = {"redis_version": "7.2.4"}
        mock_get_client.return_value = mock_client

        results = verify_integrations(service="redis")

        assert len(results) >= 1
        redis_result = next((r for r in results if r["service"] == "redis"), None)
        assert redis_result is not None
        # Status can be passed or missing depending on env config
        assert redis_result["status"] in ("passed", "missing")

    def test_verify_integrations_structure(self):
        """Verify integrations returns expected result structure."""
        # Just verify the function exists and can be called - actual verification
        # depends on environment setup (Redis connection available)
        try:
            results = verify_integrations(service="redis")
            assert isinstance(results, list)
            for result in results:
                if result["service"] == "redis":
                    assert "status" in result
                    assert "detail" in result
                    assert result["status"] in ("passed", "missing", "failed")
        except Exception as exc:
            # If no Redis is configured, that's ok - just testing structure
            assert exc.__class__.__name__


class TestRedisToolsAvailability:
    """Test Redis tools are available and configured."""

    @pytest.fixture(autouse=True)
    def _clear_registry_cache(self):
        """Force fresh tool discovery so registry assertions never depend on a
        cache populated by a prior test (per the ``tests/`` convention that any
        test calling ``get_registered_tools()`` clears the cache in a fixture)."""
        from tools.registry import clear_tool_registry_cache

        clear_tool_registry_cache()
        yield
        clear_tool_registry_cache()

    def test_redis_tools_exist_as_modules(self):
        """Redis tools modules exist and are properly structured."""
        try:
            import importlib

            redis_client_list_tool = importlib.import_module(
                "integrations.redis.tools.redis_client_list_tool"
            )
            redis_key_scan_tool = importlib.import_module(
                "integrations.redis.tools.redis_key_scan_tool"
            )
            redis_latency_doctor_tool = importlib.import_module(
                "integrations.redis.tools.redis_latency_doctor_tool"
            )
            redis_list_depth_tool = importlib.import_module(
                "integrations.redis.tools.redis_list_depth_tool"
            )
            redis_replication_tool = importlib.import_module(
                "integrations.redis.tools.redis_replication_tool"
            )
            redis_server_info_tool = importlib.import_module(
                "integrations.redis.tools.redis_server_info_tool"
            )
            redis_slowlog_tool = importlib.import_module(
                "integrations.redis.tools.redis_slowlog_tool"
            )

            # All 7 tool modules should be importable (4 baseline + 3 P1)
            assert redis_server_info_tool is not None
            assert redis_slowlog_tool is not None
            assert redis_replication_tool is not None
            assert redis_key_scan_tool is not None
            assert redis_client_list_tool is not None
            assert redis_list_depth_tool is not None
            assert redis_latency_doctor_tool is not None
        except ImportError as e:
            pytest.fail(f"Failed to import Redis tool modules: {e}")

    def test_p1_tools_registered_on_investigation_surface(self):
        """The three new P1 tools are discoverable on the investigation and chat surfaces."""
        from tools.registry import get_registered_tools

        p1_tools = {
            "get_redis_client_list",
            "get_redis_list_depth",
            "get_redis_latency_doctor",
        }
        for surface in ("investigation", "chat"):
            names = {t.name for t in get_registered_tools(surface) if t.source == "redis"}
            assert p1_tools <= names, (
                f"missing P1 redis tools on {surface} surface: {p1_tools - names}"
            )

    def test_redis_integration_config_has_required_fields(self):
        """Redis integration provides required fields in resolved config."""
        from integrations.config_models import RedisIntegrationConfig

        config = RedisIntegrationConfig(
            host="localhost",
            port=6379,
            username="monitor",
            password="s3cret",
            db=0,
            ssl=True,
            integration_id="test-id",
        )

        assert config.host == "localhost"
        assert config.port == 6379
        assert config.username == "monitor"
        assert config.db == 0
        assert config.ssl is True
        assert config.integration_id == "test-id"


class TestRedisP1ToolPaths:
    """Exercise each new P1 tool end-to-end: tool fn -> helper -> client -> shape.

    The Redis client is mocked at the transport boundary so the full tool path
    (config build, command issue, response shaping, bounded sampling) is
    covered without a live Redis, mirroring how a real investigation would call
    these tools with credentials resolved from the integration config.
    """

    @patch("integrations.redis._get_client")
    def test_client_list_tool_path(self, mock_get_client):
        from integrations.redis.tools.redis_client_list_tool import get_redis_client_list

        mock_client = MagicMock()
        mock_client.client_list.return_value = [
            {"id": "1", "addr": "10.0.0.1:5000", "flags": "N", "idle": "0", "cmd": "get"},
            {"id": "2", "addr": "10.0.0.1:5001", "flags": "b", "idle": "5", "cmd": "blpop"},
        ]
        mock_get_client.return_value = mock_client

        result = get_redis_client_list(host="prod-cache.redis.internal", port=6379, db=0)

        assert result["available"] is True
        assert result["total_clients"] == 2
        assert result["blocked_clients"] == 1
        assert result["address_breakdown"]["10.0.0.1"] == 2

    @patch("integrations.redis._get_client")
    def test_list_depth_tool_path(self, mock_get_client):
        from integrations.redis.tools.redis_list_depth_tool import get_redis_list_depth

        mock_client = MagicMock()
        mock_client.type.return_value = "list"
        mock_client.pipeline.return_value.execute.return_value = [1500, ["job-1"], ["job-1500"]]
        mock_get_client.return_value = mock_client

        result = get_redis_list_depth(
            key="sidekiq:queue:default",
            host="prod-cache.redis.internal",
            head=1,
            tail=1,
        )

        assert result["available"] is True
        assert result["depth"] == 1500  # a real backlog
        assert result["head"] == ["job-1"]
        assert result["tail"] == ["job-1500"]

    @patch("integrations.redis._get_client")
    def test_latency_doctor_tool_path(self, mock_get_client):
        from integrations.redis.tools.redis_latency_doctor_tool import get_redis_latency_doctor

        mock_client = MagicMock()
        mock_client.execute_command.return_value = "I detected spikes caused by fork."
        mock_client.latency_latest.return_value = [["fork", 1700000000, 480, 1200]]
        # Explicitly configure CONFIG GET so monitoring_active is driven by the
        # real threshold (> 0) — not MagicMock's implicit __int__ == 1, which
        # would make the assertion pass even if the threshold logic regressed.
        mock_client.config_get.return_value = {"latency-monitor-threshold": "100"}
        mock_get_client.return_value = mock_client

        result = get_redis_latency_doctor(host="prod-cache.redis.internal")

        assert result["available"] is True
        assert result["monitoring_active"] is True
        assert result["monitoring_threshold_ms"] == 100
        assert result["latest"][0]["event"] == "fork"
        assert "fork" in result["report"]


class TestRedisAlertFixture:
    """Test the Redis alert fixture is valid and parseable."""

    def test_redis_alert_fixture_is_valid_json(self):
        """Redis alert fixture is valid JSON."""
        fixture_path = Path(__file__).parent / "redis_alert.json"
        assert fixture_path.exists(), f"Alert fixture not found at {fixture_path}"

        with fixture_path.open() as f:
            alert = json.load(f)

        assert isinstance(alert, dict)
        assert "state" in alert
        assert "commonLabels" in alert
        assert "commonAnnotations" in alert

    def test_redis_alert_fixture_has_redis_context(self):
        """Redis alert fixture contains Redis-specific context."""
        fixture_path = Path(__file__).parent / "redis_alert.json"

        with fixture_path.open() as f:
            alert = json.load(f)

        labels = alert.get("commonLabels", {})
        # Alert should have Redis-specific fields for source detection
        assert "redis_instance" in labels