"""renewal_service 测试：续费检查与提醒消息生成

覆盖：
- get_expiring_assets: 到期资产查询（含已过期、排除已注销、按天数升序）
- day_text: 到期文案生成（已过期/今天/未来）
- build_renewal_message: 消息拼装（有过期+未过期混合、全部未过期、空列表）
- check_renewals: 完整流程（send=True 触发通知 / send=False 仅预览 / 默认阈值取配置）

全程 tmp_path + create_engine 临时库，mock 通知服务避免真实发送。

运行：.venv/bin/pytest tests/test_renewal_service.py -v
"""

from datetime import date, timedelta
from unittest.mock import patch

import pytest
from sqlmodel import Session, SQLModel, create_engine

import app.models.asset  # noqa: F401
import app.models.credential  # noqa: F401
import app.models.monitor  # noqa: F401
import app.models.provider  # noqa: F401
import app.models.ssl  # noqa: F401
from app.models.asset import Asset, AssetStatus, AssetType
from app.services import renewal_service


@pytest.fixture()
def engine(tmp_path):
    eng = create_engine(
        f"sqlite:///{tmp_path / 'assets.db'}", connect_args={"check_same_thread": False}
    )
    SQLModel.metadata.create_all(eng)
    yield eng
    eng.dispose()


def _seed(engine, name, *, expiry, status=AssetStatus.ACTIVE, provider="vultr"):
    with Session(engine) as s:
        s.add(Asset(
            name=name, asset_type=AssetType.VPS, provider=provider,
            expiry_date=expiry, status=status,
        ))
        s.commit()


# ----------------------------- day_text ----------------------------- #
def test_day_text_overdue():
    assert renewal_service.day_text(-5) == "已过期 5 天"
    assert renewal_service.day_text(-1) == "已过期 1 天"


def test_day_text_today():
    assert renewal_service.day_text(0) == "今天到期"


def test_day_text_future():
    assert renewal_service.day_text(1) == "1 天后"
    assert renewal_service.day_text(30) == "30 天后"


# ----------------------------- get_expiring_assets ----------------------------- #
def test_get_expiring_assets_empty(engine):
    with Session(engine) as s:
        result = renewal_service.get_expiring_assets(s, threshold_days=30)
    assert result == []


def test_get_expiring_assets_includes_overdue_and_sorted(engine):
    """已过期资产也纳入提醒（不能因过了到期日就消失），按剩余天数升序"""
    today = date.today()
    _seed(engine, "overdue", expiry=today - timedelta(days=3))
    _seed(engine, "soon", expiry=today + timedelta(days=5))
    _seed(engine, "far", expiry=today + timedelta(days=90))
    with Session(engine) as s:
        result = renewal_service.get_expiring_assets(s, threshold_days=30)
    names = [a.name for a, _ in result]
    assert names == ["overdue", "soon"]
    assert result[0][1] < result[1][1]  # -3 < 5


def test_get_expiring_assets_excludes_cancelled(engine):
    """已注销资产不参与续费提醒"""
    today = date.today()
    _seed(engine, "active", expiry=today + timedelta(days=5))
    _seed(engine, "cancelled", expiry=today + timedelta(days=5), status=AssetStatus.CANCELLED)
    with Session(engine) as s:
        result = renewal_service.get_expiring_assets(s, threshold_days=30)
    names = [a.name for a, _ in result]
    assert names == ["active"]


def test_get_expiring_assets_no_expiry_date_skipped(engine):
    """未填到期日的资产不出现在到期列表"""
    _seed(engine, "no-expiry", expiry=None)
    # _seed 不支持 None expiry，直接插入
    with Session(engine) as s:
        s.add(Asset(name="no-expiry", asset_type=AssetType.VPS, provider="vultr"))
        s.commit()
        result = renewal_service.get_expiring_assets(s, threshold_days=30)
    assert result == []


# ----------------------------- build_renewal_message ----------------------------- #
def test_build_message_empty():
    assert renewal_service.build_renewal_message([], 30) == ""


def test_build_message_with_overdue():
    """混合已过期和即将到期时，消息头部区分两类"""
    today = date.today()
    a1 = Asset(name="vps-1", provider="vultr", expiry_date=today - timedelta(days=2))
    a2 = Asset(name="vps-2", provider="vultr", expiry_date=today + timedelta(days=10))
    expiring = [(a1, -2), (a2, 10)]
    msg = renewal_service.build_renewal_message(expiring, threshold_days=30)
    assert "已过期 1 项" in msg
    assert "30 天内到期 1 项" in msg
    assert "vps-1" in msg
    assert "vps-2" in msg
    assert "已过期 2 天" in msg
    assert "10 天后" in msg


def test_build_message_no_overdue():
    """全部未过期时头部只显示常规文案"""
    today = date.today()
    a1 = Asset(name="vps-1", provider="vultr", expiry_date=today + timedelta(days=5))
    expiring = [(a1, 5)]
    msg = renewal_service.build_renewal_message(expiring, threshold_days=30)
    assert "已过期" not in msg
    assert "共 1 项" in msg


# ----------------------------- check_renewals ----------------------------- #
def test_check_renewals_no_send(engine):
    """send=False 时不触发通知，仅返回预览"""
    today = date.today()
    _seed(engine, "soon", expiry=today + timedelta(days=5))
    with Session(engine) as s:
        result = renewal_service.check_renewals(s, threshold_days=30, send=False)
    assert result["expiring_count"] == 1
    assert result["threshold_days"] == 30
    assert result["notifications"] == []
    assert result["expiring"][0]["name"] == "soon"
    assert result["expiring"][0]["days"] == 5


def test_check_renewals_send_with_no_expiring(engine):
    """无到期资产时不发送通知"""
    with Session(engine) as s:
        result = renewal_service.check_renewals(s, threshold_days=30, send=True)
    assert result["expiring_count"] == 0
    assert result["message"] == ""
    assert result["notifications"] == []


def test_check_renewals_send_dispatches_notification(engine):
    """send=True 且有到期资产时调用通知服务"""
    today = date.today()
    _seed(engine, "soon", expiry=today + timedelta(days=3))
    with Session(engine) as s:
        with patch.object(renewal_service.notification_service, "notify", return_value=[{"ok": True}]) as mock_notify:
            result = renewal_service.check_renewals(s, threshold_days=30, send=True)
            mock_notify.assert_called_once()
    assert result["expiring_count"] == 1
    assert result["notifications"] == [{"ok": True}]


def test_check_renewals_default_threshold_from_config(engine):
    """threshold_days=None 时从 settings 读取默认值"""
    with Session(engine) as s:
        result = renewal_service.check_renewals(s, send=False)
    assert result["threshold_days"] == renewal_service.settings.RENEWAL_THRESHOLD_DAYS