"""
Tests for alert_triage_graph.

Covers:
  - P1 prod alert → incident created + deterministic triage + ack (no LLM)
  - P3 alert → digest-only, no incident
  - Signature dedupe → same signature reuses existing incident
  - Gateway error on one alert → loop continues (non-fatal)
  - Policy loader fallback (missing file)
  - LLM guard: llm_mode=off forces deterministic even when rule says llm
"""
from __future__ import annotations

import asyncio
import hashlib
import json
import sys
from pathlib import Path
from typing import Any, Dict, List, Optional
from unittest.mock import patch, MagicMock, AsyncMock

ROOT = Path(__file__).resolve().parents[4]
SUPERVISOR = ROOT / "services" / "sofiia-supervisor"
if str(SUPERVISOR) not in sys.path:
    sys.path.insert(0, str(SUPERVISOR))

# ─── Mock GatewayClient ───────────────────────────────────────────────────────

class MockToolCallResult:
    def __init__(self, success=True, data=None, error_message=""):
        self.success = success
        self.data = data or {}
        self.error_message = error_message


class MockGatewayClient:
    """Records all calls, returns configurable responses per (tool, action)."""

    def __init__(self, responses: Optional[Dict] = None):
        self.calls: List[Dict] = []
        self.responses = responses or {}

    async def call_tool(self, tool_name, action, params=None, **kwargs) -> MockToolCallResult:
        self.calls.append({"tool": tool_name, "action": action, "params": params or {}})
        key = f"{tool_name}.{action}"
        if key in self.responses:
            resp = self.responses[key]
            if callable(resp):
                return resp(tool_name, action, params)
            return MockToolCallResult(True, resp)
        # Default success responses per tool/action
        defaults = {
            "alert_ingest_tool.claim": {
                "alerts": [], "claimed": 0, "requeued_stale": 0,
            },
            "alert_ingest_tool.list": {
                "alerts": [], "count": 0,
            },
            "alert_ingest_tool.ack": {"ack_status": "acked"},
            "alert_ingest_tool.fail": {"alert_ref": "?", "status": "failed"},
            "oncall_tool.signature_should_triage": {"should_triage": True},
            "oncall_tool.signature_mark_triage": {"marked": "triage_run"},
            "oncall_tool.signature_mark_alert": {"marked": "alert_seen"},
            "incident_escalation_tool.evaluate": {
                "evaluated": 0, "escalated": 0, "followups_created": 0,
                "candidates": [], "recommendations": [], "dry_run": False,
            },
            "incident_escalation_tool.auto_resolve_candidates": {
                "candidates": [], "candidates_count": 0,
                "closed": [], "closed_count": 0, "dry_run": True,
            },
            "oncall_tool.alert_to_incident": {
                "incident_id": "inc_test_001",
                "created": True,
                "severity": "P1",
                "incident_signature": "abcd1234" * 4,
            },
            "oncall_tool.incident_attach_artifact": {"artifact": {"path": "ops/incidents/test/triage.json"}},
            "oncall_tool.incident_append_event": {"event": {"id": 1}},
            "oncall_tool.service_health": {"healthy": True, "status": "ok"},
            "observability_tool.service_overview": {"metrics": {}, "status": "ok"},
            "kb_tool.snippets": {"snippets": []},
        }
        if key in defaults:
            return MockToolCallResult(True, defaults[key])
        return MockToolCallResult(True, {})

    async def __aenter__(self):
        return self

    async def __aexit__(self, *args):
        pass


# ─── Alert fixtures ───────────────────────────────────────────────────────────

def _make_alert(
    service="gateway", severity="P1", kind="slo_breach",
    env="prod", fingerprint="fp1", ref="alrt_001",
):
    return {
        "alert_ref": ref,
        "source": "monitor@node1",
        "service": service,
        "env": env,
        "severity": severity,
        "kind": kind,
        "title": f"{service} {kind} alert",
        "summary": f"{service} is experiencing {kind}",
        "started_at": "2025-01-23T09:00:00",
        "labels": {"node": "node1", "fingerprint": fingerprint},
        "metrics": {"latency_p95_ms": 450, "error_rate_pct": 2.5},
        "ack_status": "pending",
    }


# ─── Helpers ──────────────────────────────────────────────────────────────────

def _run_graph(state_input: Dict, mock_gw: MockGatewayClient) -> Dict:
    """Execute alert_triage_graph with mocked GatewayClient."""
    from app.graphs.alert_triage_graph import build_alert_triage_graph

    graph = build_alert_triage_graph()

    async def _run():
        with patch("app.graphs.alert_triage_graph.GatewayClient", return_value=mock_gw):
            with patch("app.graphs.alert_triage_graph.GatewayClient.__aenter__",
                       return_value=mock_gw):
                with patch("app.graphs.alert_triage_graph.GatewayClient.__aexit__",
                           return_value=AsyncMock(return_value=None)):
                    return await graph.ainvoke(state_input)

    return asyncio.run(_run())


# ─── Tests ────────────────────────────────────────────────────────────────────

class TestAlertTriageNoLLM:
    """P1 prod alert → incident + deterministic triage, zero LLM calls."""

    def _run_with_p1_alert(self, alert_ref="alrt_p1"):
        p1_alert = _make_alert(severity="P1", env="prod", ref=alert_ref)
        inc_sig = hashlib.sha256(f"gateway|prod|slo_breach|fp1".encode()).hexdigest()[:32]

        gw = MockGatewayClient(responses={
            "alert_ingest_tool.claim": {
                "alerts": [p1_alert], "claimed": 1, "requeued_stale": 0,
            },
            "alert_ingest_tool.list": {
                "alerts": [p1_alert], "count": 1,
            },
            "oncall_tool.signature_should_triage": {"should_triage": False},
            "oncall_tool.alert_to_incident": {
                "incident_id": "inc_test_p1",
                "created": True,
                "severity": "P1",
                "incident_signature": inc_sig,
            },
        })

        state = {
            "workspace_id": "default",
            "user_id": "test",
            "agent_id": "sofiia",
            "_run_id": "test_run_001",
        }

        with patch("app.graphs.alert_triage_graph.load_policy") as mp:
            mp.return_value = {
                "defaults": {
                    "max_alerts_per_run": 10,
                    "only_unacked": False,
                    "max_incidents_per_run": 5,
                    "max_triages_per_run": 5,
                    "llm_mode": "off",
                    "llm_on": {"triage": False},
                    "dedupe_window_minutes_default": 120,
                    "ack_note_prefix": "test_loop",
                },
                "routing": [
                    {
                        "match": {"env_in": ["prod"], "severity_in": ["P0", "P1"]},
                        "actions": {
                            "auto_incident": True,
                            "auto_triage": False,  # skip triage in unit test
                            "triage_mode": "deterministic",
                            "incident_severity_cap": "P1",
                            "dedupe_window_minutes": 120,
                            "attach_alert_artifact": True,
                            "ack": True,
                        },
                    },
                ],
            }
            with patch("app.graphs.alert_triage_graph.match_alert",
                       side_effect=lambda a, p: {
                           "auto_incident": True, "auto_triage": False,
                           "triage_mode": "deterministic",
                           "incident_severity_cap": "P1",
                           "dedupe_window_minutes": 120,
                           "ack": True,
                           "_normalized_kind": "slo_breach",
                       }):
                result = asyncio.run(self._async_run_graph(state, gw))
        return result, gw

    async def _async_run_graph(self, state, gw):
        from app.graphs.alert_triage_graph import (
            load_policy_node, list_alerts_node, process_alerts_node, build_digest_node
        )
        s = await load_policy_node(state)
        s["_run_id"] = "test_run_001"
        with patch("app.graphs.alert_triage_graph.GatewayClient", return_value=gw):
            s = await list_alerts_node(s)
            s = await process_alerts_node(s)
        s = await build_digest_node(s)
        return s

    def test_incident_created_for_p1_prod(self):
        result, gw = self._run_with_p1_alert()
        created = result.get("created_incidents", [])
        assert len(created) >= 1
        assert created[0]["incident_id"] == "inc_test_p1"

    def test_no_llm_calls(self):
        result, gw = self._run_with_p1_alert()
        llm_tools = [c for c in gw.calls if c["tool"] in ("llm_tool", "chat_tool")]
        assert len(llm_tools) == 0, f"Unexpected LLM calls: {llm_tools}"

    def test_alert_acked(self):
        result, gw = self._run_with_p1_alert()
        ack_calls = [c for c in gw.calls
                     if c["tool"] == "alert_ingest_tool" and c["action"] == "ack"]
        assert len(ack_calls) >= 1

    def test_digest_contains_incident(self):
        result, gw = self._run_with_p1_alert()
        digest = result.get("digest_md", "")
        assert "inc_test_p1" in digest

    def test_result_summary_populated(self):
        result, gw = self._run_with_p1_alert()
        summary = result.get("result_summary", {})
        assert summary.get("created_incidents", 0) >= 1


class TestAlertTriageDigestOnly:
    """P3 alert → digest_only, no incident created, alert acked."""

    async def _run(self, gw, state):
        from app.graphs.alert_triage_graph import (
            load_policy_node, list_alerts_node, process_alerts_node, build_digest_node
        )
        with patch("app.graphs.alert_triage_graph.load_policy") as mp:
            mp.return_value = {
                "defaults": {
                    "max_alerts_per_run": 10,
                    "only_unacked": False,
                    "max_incidents_per_run": 5,
                    "max_triages_per_run": 5,
                    "llm_mode": "off",
                    "llm_on": {"triage": False},
                    "dedupe_window_minutes_default": 120,
                    "ack_note_prefix": "test_loop",
                },
                "routing": [
                    {
                        "match": {"severity_in": ["P2", "P3", "INFO"]},
                        "actions": {"auto_incident": False, "digest_only": True, "ack": True},
                    },
                ],
            }
            s = await load_policy_node(state)
            s["_run_id"] = "test_p3"
        with patch("app.graphs.alert_triage_graph.GatewayClient") as MockGW:
            MockGW.return_value.__aenter__ = AsyncMock(return_value=gw)
            MockGW.return_value.__aexit__ = AsyncMock(return_value=None)
            with patch("app.graphs.alert_triage_graph.load_policy") as mp2:
                mp2.return_value = s["policy"]
                with patch("app.graphs.alert_triage_graph.match_alert",
                           side_effect=lambda a, p: {
                               "auto_incident": False, "digest_only": True, "ack": True,
                           }):
                    s = await list_alerts_node(s)
                    s = await process_alerts_node(s)
        return await build_digest_node(s)

    def test_no_incident_created(self):
        p3_alert = _make_alert(severity="P3", env="prod", ref="alrt_p3")
        gw = MockGatewayClient(responses={
            "alert_ingest_tool.claim": {"alerts": [p3_alert], "claimed": 1, "requeued_stale": 0},
            "alert_ingest_tool.list": {"alerts": [p3_alert], "count": 1},
        })
        state = {"workspace_id": "default", "user_id": "test", "agent_id": "sofiia"}
        result = asyncio.run(self._run(gw, state))
        assert result.get("created_incidents", []) == []
        assert len(result.get("skipped_alerts", [])) >= 1

    def test_no_oncall_write_calls(self):
        p3_alert = _make_alert(severity="P3", env="prod", ref="alrt_p3_2")
        gw = MockGatewayClient(responses={
            "alert_ingest_tool.claim": {"alerts": [p3_alert], "claimed": 1, "requeued_stale": 0},
            "alert_ingest_tool.list": {"alerts": [p3_alert], "count": 1},
        })
        state = {"workspace_id": "default", "user_id": "test", "agent_id": "sofiia"}
        asyncio.run(self._run(gw, state))
        write_calls = [c for c in gw.calls if c["tool"] == "oncall_tool"
                       and "incident" in c["action"]]
        assert len(write_calls) == 0

    def test_digest_shows_skipped(self):
        p3_alert = _make_alert(severity="P3", env="prod", ref="alrt_p3_3")
        gw = MockGatewayClient(responses={
            "alert_ingest_tool.claim": {"alerts": [p3_alert], "claimed": 1, "requeued_stale": 0},
            "alert_ingest_tool.list": {"alerts": [p3_alert], "count": 1},
        })
        state = {"workspace_id": "default", "user_id": "test", "agent_id": "sofiia"}
        result = asyncio.run(self._run(gw, state))
        digest = result.get("digest_md", "")
        assert "Skipped" in digest or "skipped" in digest.lower()


class TestAlertTriageSignatureDedupe:
    """Same signature → existing incident reused, no duplicate created."""

    def test_same_signature_reuse(self):
        from app.alert_routing import compute_incident_signature

        alert1 = _make_alert(ref="alrt_sig1", fingerprint="samefp")
        alert2 = _make_alert(ref="alrt_sig2", fingerprint="samefp")  # same fingerprint

        # Verify both produce the same signature
        sig1 = compute_incident_signature(alert1)
        sig2 = compute_incident_signature(alert2)
        assert sig1 == sig2, f"Signatures differ: {sig1} vs {sig2}"

    def test_different_fingerprint_different_signature(self):
        from app.alert_routing import compute_incident_signature

        alert1 = _make_alert(ref="alrt_diff1", fingerprint="fp_a")
        alert2 = _make_alert(ref="alrt_diff2", fingerprint="fp_b")

        sig1 = compute_incident_signature(alert1)
        sig2 = compute_incident_signature(alert2)
        assert sig1 != sig2

    def test_different_service_different_signature(self):
        from app.alert_routing import compute_incident_signature

        alert1 = _make_alert(service="gateway", fingerprint="fp1")
        alert2 = _make_alert(service="router", fingerprint="fp1")

        assert compute_incident_signature(alert1) != compute_incident_signature(alert2)

    def test_signature_stored_in_incident_meta(self):
        """Verify that alert_to_incident stores incident_signature in result."""
        from app.alert_routing import compute_incident_signature

        alert = _make_alert(ref="alrt_meta_test")
        sig = compute_incident_signature(alert)

        # The router tool_manager stores sig in incident meta and returns it
        # We test the compute function here; integration tested in test_alert_to_incident.py
        assert len(sig) == 32
        assert all(c in "0123456789abcdef" for c in sig)


class TestAlertTriageNonFatalErrors:
    """Gateway error on one alert → loop continues others."""

    async def _run_mixed(self, alerts, gw, state):
        from app.graphs.alert_triage_graph import (
            load_policy_node, list_alerts_node, process_alerts_node, build_digest_node
        )
        with patch("app.graphs.alert_triage_graph.load_policy") as mp:
            mp.return_value = {
                "defaults": {
                    "max_alerts_per_run": 10,
                    "only_unacked": False,
                    "max_incidents_per_run": 5,
                    "max_triages_per_run": 5,
                    "llm_mode": "off",
                    "llm_on": {},
                    "dedupe_window_minutes_default": 120,
                    "ack_note_prefix": "test",
                },
                "routing": [],
            }
            s = await load_policy_node(state)
            s["_run_id"] = "test_nonfatal"
            s["alerts"] = alerts

        with patch("app.graphs.alert_triage_graph.GatewayClient") as MockGW:
            MockGW.return_value.__aenter__ = AsyncMock(return_value=gw)
            MockGW.return_value.__aexit__ = AsyncMock(return_value=None)
            with patch("app.graphs.alert_triage_graph.match_alert") as mock_match:
                call_count = [0]
                def match_side_effect(alert, policy=None):
                    call_count[0] += 1
                    if call_count[0] == 1:
                        # First alert raises (simulated via actions that trigger error)
                        raise RuntimeError("Gateway timeout for first alert")
                    return {
                        "auto_incident": False, "digest_only": True, "ack": True,
                    }
                mock_match.side_effect = match_side_effect
                s = await process_alerts_node(s)
        return await build_digest_node(s)

    def test_error_on_one_continues_others(self):
        alerts = [
            _make_alert(ref="alrt_fail", severity="P1"),
            _make_alert(ref="alrt_ok", severity="P3"),
        ]
        gw = MockGatewayClient()
        state = {"workspace_id": "default", "user_id": "test", "agent_id": "sofiia"}
        result = asyncio.run(self._run_mixed(alerts, gw, state))

        # Both should be counted as processed
        assert result.get("processed", 0) == 2
        # Error recorded
        errors = result.get("errors", [])
        assert len(errors) >= 1

    def test_digest_shows_errors(self):
        alerts = [
            _make_alert(ref="alrt_err", severity="P1"),
            _make_alert(ref="alrt_ok2", severity="P3"),
        ]
        gw = MockGatewayClient()
        state = {"workspace_id": "default", "user_id": "test", "agent_id": "sofiia"}
        result = asyncio.run(self._run_mixed(alerts, gw, state))
        digest = result.get("digest_md", "")
        assert "Error" in digest or "error" in digest.lower()


class TestPostProcessNodes:
    """Test escalation + autoresolve post-process nodes."""

    def setup_method(self):
        sup_path = ROOT.parent / "services" / "sofiia-supervisor"
        if str(sup_path) not in sys.path:
            sys.path.insert(0, str(sup_path))

    def test_escalation_result_in_digest(self):
        """Escalation results appear in digest when incidents are escalated."""
        import asyncio
        from app.graphs.alert_triage_graph import (
            load_policy_node, list_alerts_node, process_alerts_node,
            post_process_escalation_node, post_process_autoresolve_node, build_digest_node
        )

        p1_alert = _make_alert(severity="P1", fingerprint="fp_esc")
        gw = MockGatewayClient(responses={
            "alert_ingest_tool.claim": {
                "alerts": [p1_alert], "claimed": 1, "requeued_stale": 0,
            },
            "oncall_tool.alert_to_incident": {
                "incident_id": "inc_esc_001", "created": True,
                "incident_signature": "esc_sig_001",
            },
            "oncall_tool.signature_should_triage": {"should_triage": False},
            "incident_escalation_tool.evaluate": {
                "evaluated": 1, "escalated": 1, "followups_created": 1,
                "candidates": [{"incident_id": "inc_esc_001", "service": "gateway",
                                "from_severity": "P2", "to_severity": "P1",
                                "occurrences_60m": 15, "triage_count_24h": 2}],
                "recommendations": ["Escalated inc_esc_001"],
                "dry_run": False,
            },
            "incident_escalation_tool.auto_resolve_candidates": {
                "candidates": [], "candidates_count": 0,
                "closed": [], "closed_count": 0, "dry_run": True,
            },
        })

        state = {
            "workspace_id": "ws1", "user_id": "u1", "agent_id": "sofiia",
            "policy": {
                "defaults": {"only_unacked": True, "auto_incident": True,
                             "auto_triage": False, "llm_mode": "off", "ack": True},
                "routing": [],
            },
            "dry_run": False, "max_alerts": 20,
            "max_incidents_per_run": 5, "max_triages_per_run": 5,
            "created_incidents": [], "updated_incidents": [], "skipped_alerts": [],
            "errors": [],
        }

        async def run():
            s = {**state, "_run_id": "test_esc_001"}
            with patch("app.graphs.alert_triage_graph.GatewayClient", return_value=gw):
                s = await list_alerts_node(s)
                s = await process_alerts_node(s)
                s = await post_process_escalation_node(s)
                s = await post_process_autoresolve_node(s)
            s = await build_digest_node(s)
            return s

        result = asyncio.run(run())
        assert result["escalation_result"]["escalated"] == 1
        assert result["result_summary"]["escalated"] == 1
        assert "Escalated Incidents" in result["digest_md"]

    def test_post_process_skipped_when_no_alerts_processed(self):
        """If 0 alerts processed, post-process nodes skip gracefully."""
        import asyncio
        from app.graphs.alert_triage_graph import (
            post_process_escalation_node, post_process_autoresolve_node
        )

        state = {"processed": 0, "agent_id": "sofiia", "workspace_id": "ws1",
                 "_run_id": "test_skip_001", "dry_run": False}
        gw = MockGatewayClient()

        async def run():
            s = {**state}
            with patch("app.graphs.alert_triage_graph.GatewayClient", return_value=gw):
                s = await post_process_escalation_node(s)
                s = await post_process_autoresolve_node(s)
            return s

        result = asyncio.run(run())
        assert result["escalation_result"] == {}
        assert result["autoresolve_result"] == {}
        # No tool calls made
        esc_calls = [c for c in gw.calls if c["tool"] == "incident_escalation_tool"]
        assert len(esc_calls) == 0


class TestCooldownPreventsTriage:
    def setup_method(self):
        sup_path = ROOT.parent / "services" / "sofiia-supervisor"
        if str(sup_path) not in sys.path:
            sys.path.insert(0, str(sup_path))

    def test_cooldown_active_appends_event_but_acks(self):
        """When cooldown is active: no triage, but alert is acked and event appended."""
        import asyncio
        from app.graphs.alert_triage_graph import (
            load_policy_node, list_alerts_node, process_alerts_node, build_digest_node
        )
        policy = {
            "defaults": {
                "only_unacked": True, "auto_incident": True, "auto_triage": True,
                "triage_mode": "deterministic", "triage_cooldown_minutes": 15,
                "llm_mode": "off",
            },
            "routing": [
                {"match": {"severity": "P1"}, "actions": {
                    "auto_incident": True, "auto_triage": True,
                    "triage_mode": "deterministic", "incident_severity_cap": "P1",
                    "ack": True,
                }}
            ],
        }
        p1_alert = _make_alert(severity="P1", fingerprint="fp_cooldown")

        # signature_should_triage returns False (cooldown active)
        gw = MockGatewayClient(responses={
            "alert_ingest_tool.claim": {"alerts": [p1_alert], "claimed": 1, "requeued_stale": 0},
            "oncall_tool.alert_to_incident": {
                "incident_id": "inc_cooldown_001", "created": True,
                "incident_signature": "abcd1234",
            },
            "oncall_tool.signature_should_triage": {"should_triage": False},
            "oncall_tool.incident_append_event": {"event_id": 10},
            "alert_ingest_tool.ack": {"alert_ref": p1_alert["alert_ref"], "status": "acked"},
        })

        state = {
            "workspace_id": "ws1", "user_id": "u1", "agent_id": "sofiia",
            "policy": policy, "dry_run": False, "max_alerts": 20,
            "max_incidents_per_run": 5, "max_triages_per_run": 5,
            "created_incidents": [], "updated_incidents": [], "skipped_alerts": [],
            "errors": [],
        }

        async def run():
            s = {**state, "_run_id": "test_cooldown_001"}
            with patch("app.graphs.alert_triage_graph.GatewayClient", return_value=gw):
                s = await list_alerts_node(s)
                s = await process_alerts_node(s)
            return s

        result = asyncio.run(run())
        # Incident was created
        assert len(result.get("created_incidents", [])) >= 1
        # No triage_run_id appended (cooldown blocked it)
        # Verify append_event was called (for cooldown notification)
        calls = gw.calls
        append_calls = [c for c in calls
                        if c["tool"] == "oncall_tool" and c["action"] == "incident_append_event"]
        assert len(append_calls) >= 1
        # Ack was still called
        ack_calls = [c for c in calls
                     if c["tool"] == "alert_ingest_tool" and c["action"] == "ack"]
        assert len(ack_calls) >= 1


class TestAlertRoutingPolicy:
    """Policy loader and match_alert tests."""

    def test_load_policy_builtin_fallback(self):
        from app.alert_routing import load_policy
        from pathlib import Path
        result = load_policy(Path("/nonexistent/path.yml"))
        assert "defaults" in result
        assert "routing" in result

    def test_match_p1_prod_returns_auto_incident(self):
        from app.alert_routing import match_alert, load_policy
        policy = load_policy()
        alert = _make_alert(severity="P1", env="prod")
        actions = match_alert(alert, policy)
        assert actions["auto_incident"] is True

    def test_match_p3_returns_digest_only(self):
        from app.alert_routing import match_alert, load_policy
        policy = load_policy()
        alert = _make_alert(severity="P3", env="prod")
        actions = match_alert(alert, policy)
        assert actions.get("auto_incident", True) is False
        assert actions.get("digest_only", False) is True

    def test_match_security_returns_auto_incident(self):
        from app.alert_routing import match_alert
        # Use inline policy with security rule (avoids path resolution in tests)
        policy = {
            "defaults": {"dedupe_window_minutes_default": 120},
            "routing": [
                {
                    "match": {"kind_in": ["security"]},
                    "actions": {
                        "auto_incident": True, "auto_triage": True,
                        "triage_mode": "deterministic",
                        "incident_severity_cap": "P0",
                        "ack": True,
                    },
                },
            ],
            "kind_map": {},
        }
        alert = _make_alert(kind="security", severity="P2", env="dev")
        actions = match_alert(alert, policy)
        assert actions.get("auto_incident") is True

    def test_llm_guard_off_mode(self):
        from app.alert_routing import is_llm_allowed
        policy = {
            "defaults": {
                "llm_mode": "off",
                "llm_on": {"triage": True},
            }
        }
        assert is_llm_allowed("triage", policy) is False

    def test_llm_guard_local_mode_enabled(self):
        from app.alert_routing import is_llm_allowed
        policy = {
            "defaults": {
                "llm_mode": "local",
                "llm_on": {"triage": True},
            }
        }
        assert is_llm_allowed("triage", policy) is True

    def test_kind_normalization(self):
        from app.alert_routing import match_alert, load_policy
        policy = load_policy()
        # "oom_kill" is an alias for "oom" in kind_map
        alert = _make_alert(kind="oom_kill", severity="P1", env="prod")
        actions = match_alert(alert, policy)
        assert actions["auto_incident"] is True

    def test_fallback_no_match(self):
        """Alert with severity=P2 and no matching rule → digest_only."""
        from app.alert_routing import match_alert
        policy = {
            "defaults": {"dedupe_window_minutes_default": 120},
            "routing": [
                {
                    "match": {"env_in": ["prod"], "severity_in": ["P0", "P1"]},
                    "actions": {"auto_incident": True, "ack": True},
                }
            ],
        }
        alert = _make_alert(severity="P2", env="staging")
        actions = match_alert(alert, policy)
        assert actions["auto_incident"] is False
        assert actions["digest_only"] is True


class TestDryRunMode:
    """Dry run should not write anything but still build digest."""

    async def _run_dry(self, alerts, gw, state):
        from app.graphs.alert_triage_graph import (
            load_policy_node, list_alerts_node, process_alerts_node, build_digest_node
        )
        with patch("app.graphs.alert_triage_graph.load_policy") as mp:
            mp.return_value = {
                "defaults": {
                    "max_alerts_per_run": 10,
                    "only_unacked": False,
                    "max_incidents_per_run": 5,
                    "max_triages_per_run": 5,
                    "llm_mode": "off",
                    "llm_on": {},
                    "dedupe_window_minutes_default": 120,
                    "ack_note_prefix": "dry",
                },
                "routing": [],
            }
            s = await load_policy_node({**state, "dry_run": True})
            s["_run_id"] = "dry_run_test"
            s["alerts"] = alerts

        with patch("app.graphs.alert_triage_graph.GatewayClient") as MockGW:
            MockGW.return_value.__aenter__ = AsyncMock(return_value=gw)
            MockGW.return_value.__aexit__ = AsyncMock(return_value=None)
            with patch("app.graphs.alert_triage_graph.match_alert",
                       side_effect=lambda a, p=None: {
                           "auto_incident": True, "auto_triage": False,
                           "triage_mode": "deterministic",
                           "incident_severity_cap": "P1",
                           "dedupe_window_minutes": 120,
                           "ack": False,
                       }):
                with patch("app.graphs.alert_triage_graph.compute_incident_signature",
                           return_value="drysigsig"):
                    s = await process_alerts_node(s)
        return await build_digest_node(s)

    def test_dry_run_no_write_calls(self):
        gw = MockGatewayClient()
        state = {"workspace_id": "default", "user_id": "test", "agent_id": "sofiia"}
        alerts = [_make_alert(ref="alrt_dry", severity="P1")]
        result = asyncio.run(self._run_dry(alerts, gw, state))

        # No oncall tool write calls
        write_calls = [c for c in gw.calls
                       if c["tool"] == "oncall_tool" and "incident" in c["action"]]
        assert len(write_calls) == 0

    def test_dry_run_digest_has_marker(self):
        gw = MockGatewayClient()
        state = {"workspace_id": "default", "user_id": "test", "agent_id": "sofiia"}
        alerts = [_make_alert(ref="alrt_dry2", severity="P1")]
        result = asyncio.run(self._run_dry(alerts, gw, state))
        digest = result.get("digest_md", "")
        assert "DRY RUN" in digest