"""二次分配方案录入（业务创建/编辑同事务）集成测试。

守的是（计划 T3 验收）：
- 创建带方案 → 详情回显含 personnel_name 冗余与比例
- 编辑全量替换（空数组=清空）
- 离职/不存在人员 → 400「分摊参与人员不存在或已离职」
- 终态业务禁改方案（与编辑终态门槛同一口径）
- 合计不强制 100%：hint 展示合计与余额（余额归属待澄清 #2）
- 删除保护：被方案引用的人员 RESTRICT 禁删（400 而非静默剥离）
- 人员删除后方案回显仍有名（personnel_name 固化的意义）

人员造数走 /api/v1/base/personnel（种子营销员岗位）；离职用状态端点。
"""

import uuid

import pytest
from fastapi.testclient import TestClient

from tests.integration.factories import business_payload, customer

pytestmark = pytest.mark.integration

_BUSINESSES = "/api/v1/business/businesses"
_PERSONNEL = "/api/v1/base/personnel"


def _person(client: TestClient, headers: dict, **overrides: object) -> dict:
    role_id = overrides.pop("business_role_id", None)
    body = {
        "personnel_name": f"t_分摊_{uuid.uuid4().hex[:8]}",
        "business_role_id": role_id or _any_role_id(),
        "salary_standard": "3000.00",
        **overrides,
    }
    resp = client.post(_PERSONNEL, json=body, headers=headers)
    assert resp.status_code == 200, resp.text
    return resp.json()["data"]


def _any_role_id() -> int:
    """种子营销员岗位 ID（内置启用）。"""
    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_allocations(client: TestClient, headers: dict, allocations: list[dict]) -> dict:
    cust = customer(client, headers)
    resp = client.post(
        _BUSINESSES,
        json=business_payload(cust["id"], secondary_allocations=allocations),
        headers=headers,
    )
    assert resp.status_code == 200, resp.text
    return resp.json()["data"]


def _detail(client: TestClient, headers: dict, business_id: int) -> dict:
    resp = client.get(f"{_BUSINESSES}/{business_id}", headers=headers)
    assert resp.status_code == 200, resp.text
    return resp.json()["data"]


class TestCreateAndEcho:
    """创建带方案与详情回显。"""

    def test_带方案创建_详情回显姓名与比例(self, client: TestClient, admin: dict) -> None:
        p1 = _person(client, admin["headers"])
        p2 = _person(client, admin["headers"])
        data = _create_with_allocations(
            client,
            admin["headers"],
            [
                {"personnel_id": p1["id"], "ratio": "30.00"},
                {"personnel_id": p2["id"], "ratio": "20.00"},
            ],
        )
        detail = _detail(client, admin["headers"], data["id"])
        assert len(detail["secondary_allocations"]) == 2
        names = {a["personnel_name"] for a in detail["secondary_allocations"]}
        assert p1["personnel_name"] in names and p2["personnel_name"] in names
        ratios = sorted(a["ratio"] for a in detail["secondary_allocations"])
        assert ratios == ["20.00", "30.00"]
        # 合计 50%，余额 50% —— 只提示不落库（待澄清 #2）
        assert "50.00" in (detail["allocation_hint"] or "")
        assert "余额" in (detail["allocation_hint"] or "")

    def test_不建方案_详情为空且无hint(self, client: TestClient, admin: dict) -> None:
        data = _create_with_allocations(client, admin["headers"], [])
        detail = _detail(client, admin["headers"], data["id"])
        assert detail["secondary_allocations"] == []
        assert detail["allocation_hint"] is None

    def test_合计满额_hint只报合计(self, client: TestClient, admin: dict) -> None:
        p1 = _person(client, admin["headers"])
        p2 = _person(client, admin["headers"])
        data = _create_with_allocations(
            client,
            admin["headers"],
            [
                {"personnel_id": p1["id"], "ratio": "60"},
                {"personnel_id": p2["id"], "ratio": "40.00"},
            ],
        )
        hint = _detail(client, admin["headers"], data["id"])["allocation_hint"]
        assert hint is not None and "余额" not in hint


class TestGuards:
    """校验链：在职/终态/去重已由 schema 层覆盖，此处打服务层口径。"""

    def test_离职人员参与被拒(self, client: TestClient, admin: dict) -> None:
        p = _person(client, admin["headers"])
        resp = client.put(
            f"{_PERSONNEL}/{p['id']}/status", json={"status": 0}, headers=admin["headers"]
        )
        assert resp.status_code == 200, resp.text

        cust = customer(client, admin["headers"])
        resp = client.post(
            _BUSINESSES,
            json=business_payload(
                cust["id"],
                secondary_allocations=[{"personnel_id": p["id"], "ratio": "50.00"}],
            ),
            headers=admin["headers"],
        )
        assert resp.status_code == 400
        assert "分摊参与" in resp.json()["message"]

    def test_终态业务禁改方案(self, client: TestClient, admin: dict) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_allocations(
            client, admin["headers"], [{"personnel_id": p["id"], "ratio": "100"}]
        )
        resp = client.put(
            f"{_BUSINESSES}/{data['id']}/status",
            json={"status": 2},
            headers=admin["headers"],
        )
        assert resp.status_code == 200, resp.text

        detail = _detail(client, admin["headers"], data["id"])
        payload = business_payload(detail["customer_id"], secondary_allocations=[])
        for key in ("business_no", "status", "owner_personnel_id", "total_sale_amount"):
            payload.pop(key, None)
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 400
        assert "禁止编辑" in resp.json()["message"]

    def test_编辑全量替换与清空(self, client: TestClient, admin: dict) -> None:
        p1 = _person(client, admin["headers"])
        p2 = _person(client, admin["headers"])
        data = _create_with_allocations(
            client, admin["headers"], [{"personnel_id": p1["id"], "ratio": "40.00"}]
        )

        detail = _detail(client, admin["headers"], data["id"])
        payload = business_payload(
            detail["customer_id"],
            secondary_allocations=[{"personnel_id": p2["id"], "ratio": "70.00"}],
        )
        resp = client.put(f"{_BUSINESSES}/{data['id']}", json=payload, headers=admin["headers"])
        assert resp.status_code == 200, resp.text

        replaced = _detail(client, admin["headers"], data["id"])
        assert len(replaced["secondary_allocations"]) == 1
        assert replaced["secondary_allocations"][0]["personnel_id"] == p2["id"]

        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
        assert _detail(client, admin["headers"], data["id"])["secondary_allocations"] == []


class TestDeleteProtection:
    """RESTRICT 外键：被方案引用的人员禁删，方案随业务删除而清。"""

    def test_被方案引用的人员禁删(self, client: TestClient, admin: dict) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_allocations(
            client, admin["headers"], [{"personnel_id": p["id"], "ratio": "50.00"}]
        )
        resp = client.delete(f"{_PERSONNEL}/{p['id']}", headers=admin["headers"])
        assert resp.status_code == 400
        # 方案仍在，回显有名（RESTRICT 保证未静默剥离）
        detail = _detail(client, admin["headers"], data["id"])
        assert detail["secondary_allocations"][0]["personnel_name"] == p["personnel_name"]

    def test_删除业务后可删人员(self, client: TestClient, admin: dict) -> None:
        p = _person(client, admin["headers"])
        data = _create_with_allocations(
            client, admin["headers"], [{"personnel_id": p["id"], "ratio": "50.00"}]
        )
        resp = client.delete(f"{_BUSINESSES}/{data['id']}", headers=admin["headers"])
        assert resp.status_code == 200, resp.text  # 方案 CASCADE 随业务删除
        assert client.delete(f"{_PERSONNEL}/{p['id']}", headers=admin["headers"]).status_code == 200