"""审批流集成测试（二次分配方案为首个接入对象）。

守的是（计划 T4 验收矩阵）：
- 开关关闭（种子默认 0）：提单即「自动通过」——status=3 且两级节点
  action=3 留痕（留痕不断链，关闭=直接生效的需求口径）
- 开关开启：status=1 → 财务通过 → status=2 → 领导通过 → status=3
- 驳回：整体驳回 status=4，意见留痕；驳回必填意见（空驳 400）
- 节点准入：status=1 仅财务、status=2 仅领导；**admin 不代办**（403）；
  普通用户/营销后勤进不了模块（403）
- 再编辑撤旧建新：在途单 status=5 + node=0/action=4 撤回留痕，新单新建
- 方案为空不提单
- 开关读一次：同一提交路径内参数变化不影响判定（种子级默认行为锁定）

角色用户经 make_user 造（finance/leader/marketing_ops 三新角色种子在库）。
开关联动走参数变更批次（PUT /system/params 端到端，不直改库）。
"""

import uuid

import pytest
from fastapi.testclient import TestClient

from tests.integration.factories import business_payload, customer

pytestmark = [pytest.mark.integration, pytest.mark.usefixtures("legacy_calculation")]

_BUSINESSES = "/api/v1/business/businesses"
_APPROVALS = "/api/v1/system/approvals"
_PARAMS = "/api/v1/system/params"
_PERSONNEL = "/api/v1/base/personnel"


def _person(client: TestClient, headers: dict) -> dict:
    resp = client.post(
        _PERSONNEL,
        json={
            "personnel_name": f"t_审批_{uuid.uuid4().hex[:8]}",
            "business_role_id": _any_role_id(),
            "salary_standard": "3000.00",
        },
        headers=headers,
    )
    assert resp.status_code == 200, resp.text
    return resp.json()["data"]


def _any_role_id() -> int:
    from sqlalchemy import select

    from app.core.constants import BUSINESS_ROLE_SALESPERSON
    from app.core.db import get_session_factory
    from app.models import BusinessRole

    factory = get_session_factory()
    with factory() as session:
        return int(
            session.execute(
                select(BusinessRole.id).where(
                    BusinessRole.role_code == BUSINESS_ROLE_SALESPERSON,
                    BusinessRole.status == 1,
                )
            ).scalar_one()
        )


def _create_with_plan(client: TestClient, headers: dict, personnel_id: int) -> dict:
    cust = customer(client, headers)
    resp = client.post(
        _BUSINESSES,
        json=business_payload(
            cust["id"],
            secondary_allocations=[{"personnel_id": personnel_id, "ratio": "50.00"}],
        ),
        headers=headers,
    )
    assert resp.status_code == 200, resp.text
    return resp.json()["data"]


def _latest_order(client: TestClient, headers: dict, refer_no: str) -> dict:
    resp = client.get(_APPROVALS, params={"keyword": refer_no, "pageSize": 1}, headers=headers)
    assert resp.status_code == 200, resp.text
    rows = resp.json()["data"]["list"]
    assert rows, f"未找到审批单：{refer_no}"
    detail = client.get(f"{_APPROVALS}/{rows[0]['id']}", headers=headers)
    return detail.json()["data"]


def _set_switch(client: TestClient, admin_headers: dict, value: str) -> None:
    """经参数变更批次把二次分配审批开关置值（立即生效）。"""
    resp = client.post(
        f"{_PARAMS}/changes",
        json={
            "change_type": 1,
            "remark": f"测试切换审批开关={value}",
            "items": [
                {
                    "param_code": "approval.secondary_allocation.enabled",
                    "dimension_value": "",
                    "value": value,
                }
            ],
        },
        headers=admin_headers,
    )
    assert resp.status_code == 200, resp.text


@pytest.fixture
def finance(make_user, auth_headers) -> dict:
    """财务角色账号（审批第二节点）。"""
    user = make_user(["finance"])
    user["headers"] = auth_headers(user)
    return user


@pytest.fixture
def leader(make_user, auth_headers) -> dict:
    """领导角色账号（审批第三节点）。"""
    user = make_user(["leader"])
    user["headers"] = auth_headers(user)
    return user


@pytest.fixture
def switched_on(client: TestClient, admin: dict) -> None:
    """把二次分配审批开关置 1（立即生效；用例结束由 conftest 恢复种子基线）。"""
    _set_switch(client, admin["headers"], "1")


class TestSwitchOff:
    """开关关闭（用例显式设置，不依赖种子默认值）：提单即自动通过。"""

    def test_创建带方案_自动通过全节点留痕(
        self, client: TestClient, admin: dict, finance: dict
    ) -> None:
        _set_switch(client, admin["headers"], "0")  # V8 起种子默认开启
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])

        order = _latest_order(client, finance["headers"], data["business_no"])
        assert order["status"] == 3
        assert order["order_no"].startswith("AP")
        auto_steps = [s for s in order["steps"] if s["action"] == 3]
        assert len(auto_steps) == 2
        assert {s["node"] for s in auto_steps} == {1, 2}
        assert all(s["operator_name"] == "系统" for s in auto_steps)

    def test_方案为空不提单(self, client: TestClient, admin: dict, finance: dict) -> None:
        cust = customer(client, admin["headers"])
        resp = client.post(_BUSINESSES, json=business_payload(cust["id"]), headers=admin["headers"])
        assert resp.status_code == 200
        rows = client.get(
            _APPROVALS,
            params={"keyword": resp.json()["data"]["business_no"]},
            headers=finance["headers"],
        ).json()["data"]["list"]
        assert rows == []


class TestSwitchOn:
    """开关开启：两节点人工流转。"""

    @pytest.fixture
    def switched_on(self, client: TestClient, admin: dict) -> None:
        _set_switch(client, admin["headers"], "1")

    def test_两节点流转至通过(
        self, client: TestClient, admin: dict, finance, leader, switched_on
    ) -> None:

        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])

        order = _latest_order(client, finance["headers"], data["business_no"])
        assert order["status"] == 1

        # 财务通过 → 待领导
        resp = client.post(
            f"{_APPROVALS}/{order['id']}/action",
            json={"action": 1, "opinion": "同意"},
            headers=finance["headers"],
        )
        assert resp.status_code == 200, resp.text
        assert resp.json()["data"]["status"] == 2

        # 领导通过 → 已通过
        resp = client.post(
            f"{_APPROVALS}/{order['id']}/action",
            json={"action": 1},
            headers=leader["headers"],
        )
        assert resp.status_code == 200, resp.text
        assert resp.json()["data"]["status"] == 3
        manual = [s for s in resp.json()["data"]["steps"] if s["action"] == 1]
        assert {s["node"] for s in manual} == {1, 2}

    def test_财务驳回_整体驳回且意见留痕(
        self, client: TestClient, admin: dict, finance, leader, switched_on
    ) -> None:
        _ = leader
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])

        resp = client.post(
            f"{_APPROVALS}/{order['id']}/action",
            json={"action": 2, "opinion": "比例分配不合理"},
            headers=finance["headers"],
        )
        assert resp.status_code == 200, resp.text
        out = resp.json()["data"]
        assert out["status"] == 4
        rejected = [s for s in out["steps"] if s["action"] == 2]
        assert rejected and rejected[0]["opinion"] == "比例分配不合理"

    def test_驳回缺意见被拒(
        self, client: TestClient, admin: dict, finance, leader, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])

        resp = client.post(
            f"{_APPROVALS}/{order['id']}/action",
            json={"action": 2},
            headers=finance["headers"],
        )
        assert resp.status_code == 400

    def test_节点准入_领导不能审财务节点_admin不代办(
        self, client: TestClient, admin: dict, finance, leader, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, leader["headers"], data["business_no"])

        # status=1 是财务节点：领导不行，admin 也不代办
        for headers in (leader["headers"], admin["headers"]):
            resp = client.post(
                f"{_APPROVALS}/{order['id']}/action",
                json={"action": 1},
                headers=headers,
            )
            assert resp.status_code == 403

    def test_重复操作已通过单被拒(
        self, client: TestClient, admin: dict, finance, leader, switched_on
    ) -> None:

        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])
        client.post(
            f"{_APPROVALS}/{order['id']}/action", json={"action": 1}, headers=finance["headers"]
        )
        client.post(
            f"{_APPROVALS}/{order['id']}/action", json={"action": 1}, headers=leader["headers"]
        )
        resp = client.post(
            f"{_APPROVALS}/{order['id']}/action", json={"action": 1}, headers=finance["headers"]
        )
        assert resp.status_code == 400

    def test_驳回后方案行清空_不留在生效表(
        self, client: TestClient, admin: dict, finance, switched_on
    ) -> None:
        """被否决的方案不得以「当前生效行」身份留在表里（M3 快照会取到）。"""
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])

        resp = client.post(
            f"{_APPROVALS}/{order['id']}/action",
            json={"action": 2, "opinion": "方案不合理"},
            headers=finance["headers"],
        )
        assert resp.status_code == 200

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        assert detail["secondary_allocations"] == [], "被驳回的方案应从生效表清空"
        assert detail["allocation_hint"] is None


class TestResubmit:
    """再编辑撤旧建新 / 清空方案撤在途单。"""

    def test_在途单撤回并新建(
        self, client: TestClient, admin: dict, finance, leader, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        first = _latest_order(client, finance["headers"], data["business_no"])
        assert first["status"] == 1

        # 再编辑（仍带方案）→ 旧在途单撤回、新单待审
        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        payload = business_payload(
            detail["customer_id"],
            secondary_allocations=[{"personnel_id": p["id"], "ratio": "80.00"}],
        )
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        rows = client.get(
            _APPROVALS,
            params={"keyword": data["business_no"], "pageSize": 10},
            headers=finance["headers"],
        ).json()["data"]["list"]
        statuses = {row["status"] for row in rows}
        assert 5 in statuses and 1 in statuses, f"未见撤回+新建：{statuses}"
        old_detail = client.get(f"{_APPROVALS}/{first['id']}", headers=finance["headers"]).json()
        withdraw_steps = [s for s in old_detail["data"]["steps"] if s["action"] == 4]
        assert withdraw_steps and withdraw_steps[0]["node"] == 0

    def test_编辑清空方案_在途单撤回不再悬空(
        self, client: TestClient, admin: dict, finance, switched_on
    ) -> None:
        """空数组=清空方案：旧在途单必须撤回，否则挂着不存在的方案走审批。"""
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        first = _latest_order(client, finance["headers"], data["business_no"])
        assert first["status"] == 1

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        payload = business_payload(detail["customer_id"], secondary_allocations=[])
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        rows = client.get(
            _APPROVALS,
            params={"keyword": data["business_no"], "pageSize": 10},
            headers=finance["headers"],
        ).json()["data"]["list"]
        statuses = {row["status"] for row in rows}
        assert statuses == {5}, f"清空方案后旧在途单应撤回且无新单：{statuses}"
        assert (
            client.get(f"{_APPROVALS}/{first['id']}", headers=finance["headers"]).json()["data"][
                "status"
            ]
            == 5
        )

    def test_删除业务在途单禁删_终态单随删(
        self, client: TestClient, admin: dict, finance, switched_on
    ) -> None:
        """ref_id 固化无外键：在途单禁删（防指向已删业务的活单继续被审批），
        终态单随业务删除一并清理（已通过/已驳回的历史事实由留痕日志承载）。"""
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])

        # 在途：禁删
        resp = client.delete(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"])
        assert resp.status_code == 400
        assert "在途审批单" in resp.json()["message"]

        # 驳回（终态）后：可删，且审批单随之清理
        order = _latest_order(client, finance["headers"], data["business_no"])
        client.post(
            f"{_APPROVALS}/{order['id']}/action",
            json={"action": 2, "opinion": "驳回后可删"},
            headers=finance["headers"],
        )
        resp = client.delete(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        rows = client.get(
            _APPROVALS,
            params={"keyword": data["business_no"]},
            headers=finance["headers"],
        ).json()["data"]["list"]
        assert rows == [], "终态审批单应随业务删除一并清理"


class TestModuleAccess:
    """模块准入：普通用户与营销后勤不可见（权限清单待澄清 #6）。"""

    def test_普通用户403(self, client: TestClient, normal: dict) -> None:
        assert client.get(_APPROVALS, headers=normal["headers"]).status_code == 403

    def test_营销后勤403_暂不可见(self, client: TestClient, make_user, auth_headers) -> None:
        ops = make_user(["marketing_ops"])
        ops["headers"] = auth_headers(ops)
        assert client.get(_APPROVALS, headers=ops["headers"]).status_code == 403

    def test_财务与领导可见(self, client: TestClient, make_user, auth_headers) -> None:
        for code in ("finance", "leader"):
            user = make_user([code])
            user["headers"] = auth_headers(user)
            assert client.get(_APPROVALS, headers=user["headers"]).status_code == 200


class TestContentSnapshot:
    """审批单内容快照与版本号（code-review 遗留②）。

    守的是：复核者看到的是**送审时**的方案，而不是审批期间被改过的当前
    方案；历史单（升级前无快照）必须显式标注「当前内容回退」，不能把
    当前内容冒充送审内容。
    """

    def test_提交时快照固化_再改方案不回写旧单(
        self, client: TestClient, admin: dict, finance: dict, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        first = _latest_order(client, finance["headers"], data["business_no"])

        assert first["version_no"] == 1
        assert first["content_source"] == "snapshot"
        snapshot = first["snapshot"]
        assert snapshot["schema_version"] == 1
        assert snapshot["order_type"] == 1
        assert snapshot["captured_at"], "快照须固化采集时间"
        assert snapshot["data"]["business_no"] == data["business_no"]
        assert snapshot["data"]["allocations"][0]["ratio"] == "50.00"
        assert snapshot["data"]["allocation_total"] == "50.00"
        assert snapshot["data"]["allocation_balance"] == "50.00"

        # 编辑方案为 80%：旧在途单撤回，新单 V2 快照取新值；旧单快照不变
        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        payload = business_payload(
            detail["customer_id"],
            secondary_allocations=[{"personnel_id": p["id"], "ratio": "80.00"}],
        )
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        second = _latest_order(client, finance["headers"], data["business_no"])
        assert second["version_no"] == 2
        assert second["snapshot"]["data"]["allocations"][0]["ratio"] == "80.00"

        old = client.get(f"{_APPROVALS}/{first['id']}", headers=finance["headers"]).json()["data"]
        assert old["status"] == 5, "重新提交须撤回旧在途单"
        assert old["snapshot"]["data"]["allocations"][0]["ratio"] == "50.00"

    def test_历史单无快照_回退当前内容并标注(
        self, client: TestClient, admin: dict, finance: dict, switched_on
    ) -> None:
        """升级前的审批单没有快照列：回退读当前内容，但来源必须标 live。"""
        from app.core.db import get_session_factory
        from app.models import ApprovalOrder

        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])

        factory = get_session_factory()
        with factory() as session:
            row = session.get(ApprovalOrder, order["id"])
            assert row is not None
            row.snapshot_json = None
            session.commit()

        detail = client.get(f"{_APPROVALS}/{order['id']}", headers=finance["headers"]).json()[
            "data"
        ]
        assert detail["content_source"] == "live"
        assert detail["snapshot"]["captured_at"] is None
        assert detail["snapshot"]["data"]["business_no"] == data["business_no"]

    def test_引用对象缺失且无快照_内容缺失(
        self, client: TestClient, admin: dict, finance: dict, switched_on
    ) -> None:
        from app.core.db import get_session_factory
        from app.models import ApprovalOrder

        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])

        factory = get_session_factory()
        with factory() as session:
            row = session.get(ApprovalOrder, order["id"])
            assert row is not None
            row.snapshot_json = None
            row.ref_id = 999_999_999
            session.commit()

        detail = client.get(f"{_APPROVALS}/{order['id']}", headers=finance["headers"]).json()[
            "data"
        ]
        assert detail["content_source"] == "missing"
        assert detail["snapshot"] is None


def _payload_from_detail(detail: dict, **overrides: object) -> dict:
    """按业务详情原样重建提交载荷（明细行照抄，用于「内容未变」的场景）。"""
    items = [
        {
            "product_name": it["product_name"],
            "product_category": it["product_category"],
            "quantity": it["quantity"],
            "sale_price": it["sale_price"],
        }
        for it in detail["items"]
    ]
    body = business_payload(
        detail["customer_id"],
        items=items,
        secondary_allocations=detail["secondary_allocations"],
    )
    body.update(overrides)
    return body


class TestNoRedundantResubmit:
    """送审内容未变不重提、方案未变不新增版本（版本与留痕降噪）。

    守的是：反复保存同一份业务（只改备注）不应刷出一串方案版本与
    「撤回+新建」的审批留痕；而内容真变了（金额或方案）必须重提，
    否则审批人看到的是过期内容。
    """

    def test_方案与金额均未变_不新增版本也不重提(
        self, client: TestClient, admin: dict, finance: dict, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        first = _latest_order(client, finance["headers"], data["business_no"])
        assert first["status"] == 1

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        payload = _payload_from_detail(detail)
        payload["remark"] = "只改了备注"
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        # 方案版本不增
        after = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        assert [(h["version_no"], h["is_active"]) for h in after["allocation_history"]] == [
            (1, 1)
        ], "方案内容未变不应新增版本行"

        # 审批单不重提：仍是原来那一张、仍待财务复核
        rows = client.get(
            _APPROVALS,
            params={"keyword": data["business_no"], "pageSize": 10},
            headers=finance["headers"],
        ).json()["data"]["list"]
        assert len(rows) == 1, f"送审内容未变不应重提，实得 {len(rows)} 张单"
        assert rows[0]["id"] == first["id"]
        assert rows[0]["status"] == 1, "在途单不应被撤回"
        assert rows[0]["version_no"] == 1

    def test_只改金额不改方案_方案版本不变但审批单重提(
        self, client: TestClient, admin: dict, finance: dict, switched_on
    ) -> None:
        """金额变了 → 送审内容变了 → 必须重提；但方案本身没变 → 不新增版本。"""
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        first = _latest_order(client, finance["headers"], data["business_no"])

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        payload = _payload_from_detail(detail)
        payload["items"][0]["sale_price"] = "200.00"
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        after = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        assert [(h["version_no"], h["is_active"]) for h in after["allocation_history"]] == [
            (1, 1)
        ], "方案未变不应新增版本行"

        second = _latest_order(client, finance["headers"], data["business_no"])
        assert second["version_no"] == 2, "金额变了必须重提"
        assert second["snapshot"]["data"]["sale_amount"] == "20000.00"
        old = client.get(f"{_APPROVALS}/{first['id']}", headers=finance["headers"]).json()["data"]
        assert old["status"] == 5

    def test_改方案比例_方案版本与审批单版本同时递增(
        self, client: TestClient, admin: dict, finance: dict, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        first = _latest_order(client, finance["headers"], data["business_no"])

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        payload = _payload_from_detail(
            detail, secondary_allocations=[{"personnel_id": p["id"], "ratio": "80.00"}]
        )
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        after = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        assert [(h["version_no"], h["is_active"]) for h in after["allocation_history"]] == [
            (1, 0),
            (2, 1),
        ], "方案变了应新增版本并把旧行置历史"

        second = _latest_order(client, finance["headers"], data["business_no"])
        assert second["version_no"] == 2
        old = client.get(f"{_APPROVALS}/{first['id']}", headers=finance["headers"]).json()["data"]
        assert old["status"] == 5

    def test_无在途单时保存仍提新单(
        self, client: TestClient, admin: dict, finance: dict, leader: dict, switched_on
    ) -> None:
        """保守规则：只有「存在在途单且内容一致」才不重提。
        方案已审批通过后再保存，仍按原语义重新送审。"""
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])
        client.post(
            f"{_APPROVALS}/{order['id']}/action", json={"action": 1}, headers=finance["headers"]
        )
        client.post(
            f"{_APPROVALS}/{order['id']}/action", json={"action": 1}, headers=leader["headers"]
        )

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        payload = _payload_from_detail(detail)
        payload["remark"] = "已通过后再保存"
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        rows = client.get(
            _APPROVALS,
            params={"keyword": data["business_no"], "pageSize": 10},
            headers=finance["headers"],
        ).json()["data"]["list"]
        assert len(rows) == 2, "无在途单时保存应重新送审"
        assert max(r["version_no"] for r in rows) == 2


class TestPendingSnapshotMatch:
    """在途单送审内容一致性判定（approval_service.pending_matches_snapshot）。"""

    def test_三种情形(self, client: TestClient, admin: dict, finance: dict, switched_on) -> None:
        from app.core.db import get_session_factory
        from app.services import approval_service

        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])
        snapshot = order["snapshot"]["data"]

        factory = get_session_factory()
        with factory() as session:
            # 1) 内容一致 → True
            assert (
                approval_service.pending_matches_snapshot(
                    session,
                    order_type=1,
                    ref_id=data["id"],
                    snapshot=snapshot,
                )
                is True
            )
            # 2) 内容不同 → False
            assert (
                approval_service.pending_matches_snapshot(
                    session, order_type=1, ref_id=data["id"], snapshot={"allocations": []}
                )
                is False
            )
            # 3) 无在途单 → False（引用对象换成别的）
            assert (
                approval_service.pending_matches_snapshot(
                    session, order_type=1, ref_id=999_999_999, snapshot=snapshot
                )
                is False
            )
            # 4) 快照为 None → False
            assert (
                approval_service.pending_matches_snapshot(
                    session, order_type=1, ref_id=data["id"], snapshot=None
                )
                is False
            )


class TestAllocationVersions:
    """二次分配方案版本化（code-review 遗留①）。

    守的是：编辑替换与驳回清空只把旧行置历史（is_active=0），不物理删除，
    方案参与人与比例可回溯；生效行始终唯一，核算取数不受历史行干扰。
    """

    def test_编辑方案产生新版本_旧版本保留(
        self, client: TestClient, admin: dict, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        assert [(h["version_no"], h["is_active"]) for h in detail["allocation_history"]] == [(1, 1)]

        payload = business_payload(
            detail["customer_id"],
            secondary_allocations=[{"personnel_id": p["id"], "ratio": "80.00"}],
        )
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        history = [
            (h["version_no"], h["is_active"], h["ratio"]) for h in detail["allocation_history"]
        ]
        assert history == [(1, 0, "50.00"), (2, 1, "80.00")]
        assert [a["ratio"] for a in detail["secondary_allocations"]] == ["80.00"]

    def test_驳回后生效行为空_历史行保留(
        self, client: TestClient, admin: dict, finance: dict, switched_on
    ) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_plan(client, admin["headers"], p["id"])
        order = _latest_order(client, finance["headers"], data["business_no"])

        resp = client.post(
            f"{_APPROVALS}/{order['id']}/action",
            json={"action": 2, "opinion": "方案不合理"},
            headers=finance["headers"],
        )
        assert resp.status_code == 200, resp.text

        detail = client.get(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"]).json()["data"]
        assert detail["secondary_allocations"] == [], "被驳回方案不得留在生效行"
        assert detail["allocation_hint"] is None
        history = detail["allocation_history"]
        assert len(history) == 1
        assert history[0]["version_no"] == 1
        assert history[0]["is_active"] == 0
        assert history[0]["ratio"] == "50.00"