"""月度结算接口（M3 ④）：生成/提交审批/锁定与调整单。

准入：读=登录即可；写（生成/提交/调整单）=管理员与营销后勤
（权限清单待澄清 #6，答复后细化）。
"""

from typing import Annotated

from fastapi import APIRouter, Depends, Path, Query

from app.api.deps import DbSession, RequestMetaDep, require_roles
from app.core.constants import ROLE_ADMIN, ROLE_MARKETING_OPS
from app.core.response import ApiResponse, PageResult, ok
from app.models import User
from app.schemas.settlement import (
    AdjustmentCreateIn,
    SettlementDetailOut,
    SettlementGenerateIn,
    SettlementOut,
    SettlementQuery,
)
from app.services import settlement_service

router = APIRouter(prefix="/settlements", tags=["绩效工资 · 月度结算"])

_SettlementWriter = Annotated[User, Depends(require_roles(ROLE_ADMIN, ROLE_MARKETING_OPS))]


@router.post("/generate", response_model=ApiResponse[SettlementDetailOut], summary="生成月结快照")
def generate(
    payload: SettlementGenerateIn,
    session: DbSession,
    current_user: _SettlementWriter,
    meta: RequestMetaDep,
) -> ApiResponse[SettlementDetailOut]:
    """按确认回款口径生成指定月份的结算快照（草稿）。"""
    return ok(
        settlement_service.generate(session, payload.month, operator=current_user, meta=meta),
        message="月结已生成",
    )


@router.get("", response_model=ApiResponse[PageResult[SettlementOut]], summary="月结列表")
def list_settlements(
    session: DbSession,
    query: Annotated[SettlementQuery, Query()],
) -> ApiResponse[PageResult[SettlementOut]]:
    """分页查询月结（按月份倒序）。"""
    return ok(settlement_service.list_page(session, query))


@router.get("/{settlement_id}", response_model=ApiResponse[SettlementDetailOut], summary="月结详情")
def get_settlement(
    session: DbSession,
    settlement_id: Annotated[int, Path(ge=1)],
) -> ApiResponse[SettlementDetailOut]:
    """月结详情（含按人明细）。"""
    return ok(settlement_service.get_detail(session, settlement_id))


@router.post(
    "/{settlement_id}/submit",
    response_model=ApiResponse[SettlementDetailOut],
    summary="提交审批",
)
def submit(
    settlement_id: Annotated[int, Path(ge=1)],
    session: DbSession,
    current_user: _SettlementWriter,
    meta: RequestMetaDep,
) -> ApiResponse[SettlementDetailOut]:
    """提交审批：开关关闭=自动通过并锁定；开启=待财务复核。"""
    return ok(
        settlement_service.submit(session, settlement_id, operator=current_user, meta=meta),
        message="已提交",
    )


# ==================== 调整单（已锁定月份的补发/扣减） ====================


@router.post("/adjustments", response_model=ApiResponse[dict], summary="新建调整单")
def create_adjustment(
    payload: AdjustmentCreateIn,
    session: DbSession,
    current_user: _SettlementWriter,
    meta: RequestMetaDep,
) -> ApiResponse[dict]:
    """新建调整单：开关关闭=提交即生效（自动通过留痕）；开启=走审批。"""
    return ok(
        settlement_service.create_adjustment(session, payload, operator=current_user, meta=meta),
        message="调整单已创建",
    )


@router.get("/adjustments", response_model=ApiResponse[list[dict]], summary="调整单列表")
def list_adjustments(session: DbSession) -> ApiResponse[list[dict]]:
    """调整单列表（一期不分页，内部系统量级有限）。"""
    return ok(settlement_service.list_adjustments(session))