"""业务管理接口（需求 2.2.1/2.2.4）。

校验规则（编号生成、状态机、归属留痕、汇总重算）见 `business_service`
模块 docstring；基础数据属业务操作，登录即可访问。
"""

from datetime import date
from typing import Annotated

from fastapi import APIRouter, Depends, Path, Query

from app.api.deps import DbSession, PayrollWriter, RequestMetaDep, get_current_user
from app.core.response import ApiResponse, PageQuery, PageResult, ok
from app.models import User
from app.schemas.business import (
    BusinessCreateIn,
    BusinessDetailOut,
    BusinessOut,
    BusinessOwnershipIn,
    BusinessQuery,
    BusinessStatusIn,
    BusinessStatusLogOut,
    BusinessUpdateIn,
    GrossProfitOut,
    OwnershipChangeLogOut,
)
from app.schemas.business_source import (
    GuidanceConfirmIn,
    SalesRelationConfirmIn,
    SalesRelationQuery,
    SalesRelationReleaseIn,
    SourceDocumentsQuery,
    SourceMaterialsIn,
    SourcePriceConfirmIn,
)
from app.services import business_service, business_source

# 基础数据是业务操作：登录即可，不要求管理员（区别于系统管理的 AdminUser）
CurrentUser = Annotated[User, Depends(get_current_user)]

router = APIRouter(prefix="/businesses", tags=["业务管理"])


@router.get("/{business_id}/readiness")
def source_readiness(session: DbSession, _: CurrentUser, business_id: Annotated[int, Path(ge=1)]):
    return ok(business_source.readiness(session, business_id))


@router.get("/{business_id}/source-documents")
def source_documents(session: DbSession, _: CurrentUser, business_id: Annotated[int, Path(ge=1)],
                     query: Annotated[SourceDocumentsQuery, Query()]):
    return ok(business_source.documents(session, business_id, query, query.entity))


@router.get("/{business_id}/source-quantities")
def source_quantities(session: DbSession, _: CurrentUser, business_id: Annotated[int, Path(ge=1)],
                      query: Annotated[PageQuery, Query()]):
    return ok(business_source.source_quantities(session, business_id, query))


@router.get("/{business_id}/source-documents/{document_id}/details")
def source_document_details(session: DbSession, _: CurrentUser, business_id: Annotated[int, Path(ge=1)],
                            document_id: Annotated[int, Path(ge=1)], query: Annotated[PageQuery, Query()]):
    return ok(business_source.document_details(session, business_id, document_id, query))


@router.put("/{business_id}/source-documents/{document_id}/missing-price")
def confirm_source_price(session: DbSession, actor: PayrollWriter, business_id: Annotated[int, Path(ge=1)],
                         document_id: Annotated[int, Path(ge=1)], payload: SourcePriceConfirmIn, meta: RequestMetaDep):
    from app.services.authorization_service import require_permission

    require_permission(session, actor, "payroll:prepare")
    return ok(business_source.confirm_missing_source_price(session, business_id, document_id, payload, actor, meta))


@router.put("/{business_id}/guidance")
def confirm_guidance(session: DbSession, actor: PayrollWriter, business_id: Annotated[int, Path(ge=1)],
                     payload: GuidanceConfirmIn, meta: RequestMetaDep):
    """从本地发货明细登记来源产品的发货月份指导成本。"""
    from app.services.authorization_service import require_permission

    require_permission(session, actor, "payroll:prepare")
    require_permission(session, actor, "tplus:facts")
    return ok(business_source.confirm_guidance(session, business_id, payload, actor, meta))


@router.get("/{business_id}/sales-relation-candidates")
def sales_relation_candidates(session: DbSession, _: CurrentUser, business_id: Annotated[int, Path(ge=1)],
                              query: Annotated[SalesRelationQuery, Query()]):
    return ok(business_source.sales_relation_candidates(session, business_id, query, query.shipment_page, query.order_page))


@router.put("/{business_id}/sales-relation")
def confirm_sales_relation(session: DbSession, actor: PayrollWriter,
                           business_id: Annotated[int, Path(ge=1)],
                           payload: SalesRelationConfirmIn, meta: RequestMetaDep):
    from app.services.authorization_service import require_permission
    from app.services.tplus import sales_relations

    require_permission(session, actor, "payroll:prepare")
    return ok(sales_relations.confirm(session, business_id, payload, actor, meta))


@router.put("/{business_id}/sales-relation/release")
def release_sales_relation(session: DbSession, actor: PayrollWriter,
                           business_id: Annotated[int, Path(ge=1)],
                           payload: SalesRelationReleaseIn, meta: RequestMetaDep):
    from app.services.authorization_service import require_permission
    from app.services.tplus import sales_relations

    require_permission(session, actor, "payroll:prepare")
    return ok(sales_relations.release(session, business_id, payload, actor, meta))


@router.put("/{business_id}/source-materials")
def source_materials(session: DbSession, actor: PayrollWriter, business_id: Annotated[int, Path(ge=1)],
                     payload: SourceMaterialsIn, meta: RequestMetaDep):
    return ok(business_source.save_materials(session, business_id, payload, actor, meta))


@router.get("", response_model=ApiResponse[PageResult[BusinessOut]], summary="业务列表")
def list_businesses(
    session: DbSession,
    _: CurrentUser,
    query: Annotated[BusinessQuery, Query()],
) -> ApiResponse[PageResult[BusinessOut]]:
    """分页查询业务。编号/公司名称模糊，可按状态/客户/归属人员/日期范围筛选。"""
    return ok(business_service.list_businesses(session, query))


@router.post("", response_model=ApiResponse[BusinessOut], summary="创建业务")
def create_business(
    session: DbSession,
    current_user: PayrollWriter,
    payload: BusinessCreateIn,
    meta: RequestMetaDep,
) -> ApiResponse[BusinessOut]:
    """创建业务 + 明细行（≥1）。业务编号自动生成；创建写首条状态留痕。"""
    return ok(
        business_service.create_business(session, payload, operator=current_user, meta=meta),
        message="业务已创建",
    )


@router.get("/{business_id}", response_model=ApiResponse[BusinessDetailOut], summary="业务详情")
def get_business(
    session: DbSession,
    _: CurrentUser,
    business_id: Annotated[int, Path(ge=1)],
) -> ApiResponse[BusinessDetailOut]:
    """业务详情，附产品明细行，供编辑抽屉一次回显。"""
    return ok(business_service.get_detail(session, business_id))


@router.put("/{business_id}", response_model=ApiResponse[BusinessOut], summary="编辑业务")
def update_business(
    session: DbSession,
    current_user: PayrollWriter,
    business_id: Annotated[int, Path(ge=1)],
    payload: BusinessUpdateIn,
    meta: RequestMetaDep,
) -> ApiResponse[BusinessOut]:
    """编辑业务（明细全量替换并重算汇总）。归属不在此端点调整，走 /ownership。"""
    return ok(
        business_service.update_business(
            session, business_id, payload, operator=current_user, meta=meta
        ),
        message="已保存",
    )


@router.delete("/{business_id}", response_model=ApiResponse[None], summary="删除业务")
def delete_business(
    session: DbSession,
    current_user: PayrollWriter,
    business_id: Annotated[int, Path(ge=1)],
    meta: RequestMetaDep,
) -> ApiResponse[None]:
    """删除业务。有发货或回款记录时禁删，应改为已终止。"""
    business_service.delete_business(session, business_id, operator=current_user, meta=meta)
    return ok(message="业务已删除")


@router.put("/{business_id}/status", response_model=ApiResponse[BusinessOut], summary="状态流转")
def change_status(
    session: DbSession,
    current_user: PayrollWriter,
    business_id: Annotated[int, Path(ge=1)],
    payload: BusinessStatusIn,
    meta: RequestMetaDep,
) -> ApiResponse[BusinessOut]:
    """状态流转：执行中→已完成/已终止；终态不可再变更；终止必填原因。"""
    return ok(
        business_service.change_status(
            session, business_id, payload, operator=current_user, meta=meta
        ),
        message="状态已变更",
    )


@router.put("/{business_id}/ownership", response_model=ApiResponse[BusinessOut], summary="调整归属")
def change_ownership(
    session: DbSession,
    current_user: PayrollWriter,
    business_id: Annotated[int, Path(ge=1)],
    payload: BusinessOwnershipIn,
    meta: RequestMetaDep,
) -> ApiResponse[BusinessOut]:
    """调整负责/协助营销人员，同事务写归属变更留痕（不回溯历史）。"""
    return ok(
        business_service.change_ownership(
            session, business_id, payload, operator=current_user, meta=meta
        ),
        message="归属已调整",
    )


@router.get(
    "/{business_id}/ownership-logs",
    response_model=ApiResponse[PageResult[OwnershipChangeLogOut]],
    summary="归属变更记录",
)
def list_ownership_logs(
    session: DbSession,
    _: CurrentUser,
    business_id: Annotated[int, Path(ge=1)],
    query: Annotated[PageQuery, Query()],
) -> ApiResponse[PageResult[OwnershipChangeLogOut]]:
    """某业务的归属变更留痕（分页，按时间倒序）。"""
    return ok(business_service.list_ownership_logs(session, business_id, query))


@router.get(
    "/{business_id}/status-logs",
    response_model=ApiResponse[PageResult[BusinessStatusLogOut]],
    summary="状态流转记录",
)
def list_status_logs(
    session: DbSession,
    _: CurrentUser,
    business_id: Annotated[int, Path(ge=1)],
    query: Annotated[PageQuery, Query()],
) -> ApiResponse[PageResult[BusinessStatusLogOut]]:
    """某业务的状态流转时间线（分页，按时间正序，从创建起展示）。"""
    return ok(business_service.list_status_logs(session, business_id, query))


@router.get(
    "/{business_id}/gross-profit",
    response_model=ApiResponse[GrossProfitOut],
    summary="毛利润数据视图",
)
def gross_profit(
    session: DbSession,
    _: CurrentUser,
    business_id: Annotated[int, Path(ge=1)],
    as_of: Annotated[date | None, Query()] = None,
) -> ApiResponse[GrossProfitOut]:
    """按产品逐行实时计算毛利润与折算额（不含运费口径，对照表 #2）。

    阈值按 asOf（默认今日）取参数快照；M3 核算实际按回款到账日取参。
    """
    return ok(business_service.gross_profit(session, business_id, as_of))