import asyncio
import json


def test_dispatch_degrades_and_queues_when_ai_or_telegram_fails(tmp_path, monkeypatch):
    import services.event_router as event_router

    queue_path = tmp_path / "event_router_failed.jsonl"
    monkeypatch.setattr(event_router, "_QUEUE_PATH", str(queue_path))
    monkeypatch.setattr(event_router, "_is_event_silenced", lambda event: False)

    async def broken_l1(event, session_id):
        raise RuntimeError("hermes unavailable")

    monkeypatch.setattr(event_router, "_handle_l1", broken_l1)
    monkeypatch.setattr(
        event_router,
        "send_telegram_with_result",
        lambda *args, **kwargs: {
            "ok": False,
            "sent": 0,
            "failed": 1,
            "chat_ids": [123],
            "errors": ["123:HTTP 500"],
        },
    )

    result = asyncio.run(event_router.dispatch({
        "source": "Scheduler.Test",
        "event_type": "crawler_timeout",
        "severity": "warning",
        "title": "測試任務異常",
        "summary": "timeout",
        "trace": "Traceback...",
    }))

    assert result["tier"] == "L1"
    assert result["delivered"] is False
    assert result["queued"] is True
    assert result["payload"]["status"] == "degraded"
    queued = json.loads(queue_path.read_text(encoding="utf-8").strip())
    assert queued["reason"] == "telegram_delivery_failed"
    assert queued["event_key"] == "Scheduler.Test:crawler_timeout"


def test_dispatch_executes_only_auto_safe_actions(monkeypatch):
    import services.agent_actions as agent_actions
    import services.event_router as event_router

    calls = []
    monkeypatch.setattr(event_router, "_is_event_silenced", lambda event: False)
    monkeypatch.setitem(
        agent_actions.SAFE_ACTIONS,
        "retry_task",
        lambda **params: calls.append(params) or {"status": "scheduled"},
    )

    async def planned_l2(event, session_id):
        return {
            "dispatch_to": "safe_action",
            "auto_execute": True,
            "action_plan": [
                {"action": "retry_task", "params": {"task_name": "run_momo_task"}},
                {"action": "restart_container", "params": {"container": "momo-db"}},
            ],
        }

    monkeypatch.setattr(event_router, "_handle_l2", planned_l2)
    monkeypatch.setattr(
        event_router,
        "send_telegram_with_result",
        lambda *args, **kwargs: {"ok": True, "sent": 1, "failed": 0, "chat_ids": [123], "errors": []},
    )

    result = asyncio.run(event_router.dispatch({
        "source": "Scheduler.MOMO",
        "event_type": "scheduler_task_failure",
        "severity": "alert",
        "title": "MOMO 任務異常",
        "summary": "boom",
        "payload": {"task_name": "run_momo_task"},
    }))

    assert result["tier"] == "L2"
    assert calls == [{"task_name": "run_momo_task"}]
    assert result["payload"]["executed_actions"][0]["status"] == "ok"
    assert result["payload"]["executed_actions"][1]["status"] == "rejected"


def test_dispatch_dedupes_repeated_event(monkeypatch):
    import services.event_router as event_router

    event_router._EVENT_DEDUP.clear()
    sent = []
    monkeypatch.setattr(event_router, "_is_event_silenced", lambda event: False)
    monkeypatch.setattr(
        event_router,
        "send_telegram_with_result",
        lambda *args, **kwargs: sent.append(True) or {"ok": True, "sent": 1, "failed": 0, "chat_ids": [123], "errors": []},
    )

    event = {
        "source": "Scheduler.BackupMonitor",
        "event_type": "backup_monitor_alert",
        "severity": "alert",
        "title": "備份健康告警",
        "summary": "stale backup",
        "dedup_ttl_sec": 60,
    }

    first = asyncio.run(event_router.dispatch(event))
    second = asyncio.run(event_router.dispatch(event))

    assert first["deduped"] is False
    assert second["deduped"] is True
    assert second["sent"] == 0
    assert len(sent) == 1


def test_dispatch_decision_envelope_skips_ai_handler(monkeypatch):
    import services.event_router as event_router

    sent = []
    monkeypatch.setattr(event_router, "_is_event_silenced", lambda event: False)

    async def should_not_run(*args, **kwargs):
        raise AssertionError("decision envelope event should not enter AI tier")

    monkeypatch.setattr(event_router, "_handle_l1", should_not_run)
    monkeypatch.setattr(event_router, "_handle_l2", should_not_run)
    monkeypatch.setattr(
        event_router,
        "send_telegram_with_result",
        lambda message, **kwargs: sent.append((message, kwargs)) or {
            "ok": True,
            "sent": 1,
            "failed": 0,
            "chat_ids": [123],
            "errors": [],
        },
    )

    envelope = {
        "decision_id": "nemotron:price_alert:SKU-1:abcdef12",
        "source_agent": "nemotron",
        "decision_type": "price_alert",
        "severity": "P1",
        "confidence": 0.91,
        "subject": {
            "sku": "SKU-1",
            "name": "測試精華液",
            "momo_price": 120,
            "competitor_price": 100,
            "competitor_product_id": "PC-1",
            "competitor_product_name": "PChome 測試精華液",
        },
        "evidence": [
            {
                "type": "match",
                "metric": "match_score",
                "value": 0.93,
                "basis": "exact/total_price/price_alert_exact",
                "confidence": 0.93,
            }
        ],
        "recommended_action": {"action": "price_follow_review", "owner": "營運", "requires_hitl": True},
        "guardrails": {
            "can_auto_execute": False,
            "data_quality": "complete",
            "blocked_reason": "價格調整需人工覆核",
        },
        "expected_impact": {
            "gap_amount": 20,
            "candidate_gap_pct": 20,
        },
    }

    result = asyncio.run(event_router.dispatch({
        "source": "NemoTron.Dispatcher",
        "event_type": "nemoton_dispatch_alert",
        "severity": "alert",
        "title": "NemoTron 派發器告警",
        "summary": "legacy raw message should not become the decision brief",
        "decision_envelope": envelope,
        "payload": {"raw_message": "legacy raw message should not become the decision brief"},
    }))

    assert result["delivered"] is True
    assert result["payload"]["status"] == "decision_envelope_direct"
    assert len(sent) == 1
    message, kwargs = sent[0]
    assert "🧭 <b>決策信封</b>" in message
    assert "🎯 <b>標的</b>" in message
    assert "📊 <b>價格證據</b>" in message
    assert "🧩 <b>比對證據</b>" in message
    assert "✅ <b>人工下一步</b>" in message
    assert "🚦 <b>通知分級</b>" in message
    assert "直接價格威脅" in message
    assert "高信心同款 / 總價可比 / 可直接價格告警" in message
    assert "SKU：<code>SKU-1</code>" in message
    assert "MOMO：<b>NT$ 120</b>" in message
    assert "PChome：<b>NT$ 100</b>" in message
    assert "價差：<b>+20.0%</b> / NT$ 20" in message
    assert "PChome：<code>PC-1</code>" in message
    assert "exact/total_price/price_alert_exact" in message
    assert "legacy raw message" not in message
    assert kwargs["reply_markup"]["inline_keyboard"][0][0]["callback_data"].startswith("momo:eig:")


def test_price_decision_template_marks_unit_price_review_as_non_direct_alert():
    from services.telegram_templates import _format_decision_envelope

    envelope = {
        "decision_id": "review_queue:SKU-UNIT",
        "decision_type": "pchome_match_review",
        "severity": "P2",
        "confidence": 0.82,
        "subject": {
            "sku": "SKU-UNIT",
            "name": "測試乳液 500ml x2",
            "momo_price": 1200,
            "competitor_price": 950,
            "competitor_product_id": "PCH-UNIT",
            "competitor_product_name": "測試乳液 1000ml",
        },
        "evidence": [
            {
                "type": "match",
                "metric": "match_score",
                "value": 0.82,
                "basis": "same_product_different_pack/unit_price/unit_price_review",
            }
        ],
        "recommended_action": {"action": "unit_price_required", "owner": "營運", "requires_hitl": True},
        "guardrails": {
            "can_auto_execute": False,
            "data_quality": "partial",
            "match_type": "same_product_different_pack",
            "price_basis": "unit_price",
            "alert_tier": "unit_price_review",
        },
    }

    message = "\n".join(_format_decision_envelope(envelope))

    assert "🚦 <b>通知分級</b>" in message
    assert "單位價覆核" in message
    assert "同商品不同包裝 / 單位價可比 / 單位價覆核" in message
    assert "禁止用總價直接判定價格威脅" in message
    assert "改用單位價覆核，不寫總價型價差" in message


def test_replay_failed_deliveries_removes_successful_records(tmp_path, monkeypatch):
    import services.event_router as event_router

    queue_path = tmp_path / "failed.jsonl"
    queue_path.write_text(
        json.dumps({
            "ts": "2026-04-29T00:00:00",
            "reason": "telegram_delivery_failed",
            "tier": "L1",
            "event_key": "Scheduler.Test:test",
            "event": {"title": "舊告警", "summary": "需要回放"},
            "message": "queued message",
            "errors": ["HTTP 500"],
        }, ensure_ascii=False) + "\n",
        encoding="utf-8",
    )
    monkeypatch.setattr(event_router, "_QUEUE_PATH", str(queue_path))
    sent = []
    monkeypatch.setattr(
        event_router,
        "send_telegram_with_result",
        lambda message, **kwargs: sent.append(message) or {"ok": True, "sent": 1, "failed": 0, "chat_ids": [123], "errors": []},
    )

    result = event_router.replay_failed_deliveries(limit=10)

    assert result == {"attempted": 1, "sent": 1, "failed": 0, "dropped": 0}
    assert "EventRouter Queue Replay" in sent[0]
    assert "queued message" not in sent[0]
    assert not queue_path.exists()


def test_queued_record_message_rebuilds_safe_compact_html():
    import services.event_router as event_router

    record = {
        "ts": "2026-05-21T13:00:00",
        "reason": "telegram_delivery_failed",
        "event_key": "Scheduler.Festival:festival_task_failure",
        "event": {
            "title": "促銷爬蟲 <失敗>",
            "summary": "Alert Text: 很抱歉此EDM不存在 <unknown>",
            "trace": "#0 0xabc <unknown>\n" * 200,
        },
        "message": "<pre>原始壞訊息 <unknown></pre>",
        "errors": ["-1003940688311:HTTP 400 <bad html>"],
    }

    message = event_router._queued_record_message(record)

    assert "EventRouter Queue Replay" in message
    assert "原始壞訊息" not in message
    assert "<unknown>" not in message
    assert "&lt;unknown&gt;" in message
    assert "&lt;失敗&gt;" in message
    assert len(message) < 4096


def test_replay_failed_deliveries_keeps_failed_records(tmp_path, monkeypatch):
    import services.event_router as event_router

    queue_path = tmp_path / "failed.jsonl"
    queue_path.write_text(
        json.dumps({"event_key": "Scheduler.Test:test", "event": {"title": "舊告警"}, "message": "queued"}) + "\n",
        encoding="utf-8",
    )
    monkeypatch.setattr(event_router, "_QUEUE_PATH", str(queue_path))
    monkeypatch.setattr(
        event_router,
        "send_telegram_with_result",
        lambda *args, **kwargs: {"ok": False, "sent": 0, "failed": 1, "chat_ids": [123], "errors": ["HTTP 500"]},
    )

    result = event_router.replay_failed_deliveries(limit=10)

    assert result["attempted"] == 1
    assert result["failed"] == 1
    assert "last_replay_error" in queue_path.read_text(encoding="utf-8")