"""
费控制度成员联动同步工具

部门停用/员工解约时自动移除相关制度中的成员引用。
员工调部门/部门新增员工时自动创建本地额度记录。
"""

from app.api.v1.module_system.auth.schema import AuthSchema
from app.core.alipay import AlipayClient
from app.core.logger import log
from app.plugin.module_payment.expense.institution.crud import InstitutionCRUD


def _compute_quota_status(inst) -> tuple:
    """根据制度配置和当前时间，计算额度记录的状态和金额

    返回: (total_amount, available_amount, status)
    """
    from datetime import datetime
    from app.plugin.module_payment.expense.quota.enums import QuotaStatusEnum
    from decimal import Decimal

    grant_mode = getattr(inst, "grant_mode", None)
    amount_val = float(getattr(inst, "amount", 0) or 0)

    # 判断是否在有效期内
    now = datetime.now()
    in_period = True
    start_date = getattr(inst, "effective_start_date", None)
    end_date = getattr(inst, "effective_end_date", None)
    if start_date and now < start_date:
        in_period = False
    if end_date and in_period and now > end_date:
        in_period = False

    # 定额+有效期内 → ACTIVE + 全额
    if grant_mode == "period" and amount_val > 0 and in_period:
        return (Decimal(str(amount_val)), Decimal(str(amount_val)), QuotaStatusEnum.QUOTA_ACTIVE.value)

    # 否则 → PENDING + 0
    return (Decimal("0"), Decimal("0"), QuotaStatusEnum.QUOTA_PENDING.value)


async def _sync_employee_quota(
    auth: AuthSchema, enterprise_id: str, employee_id: str, department_ids: list[str], is_add: bool
) -> None:
    """根据员工所属部门，同步本地额度记录

    扫描所有按部门模式的制度：
    - 匹配的部门 → 确保员工有额度记录（检查有效期内状态）
    - 不匹配的部门 → 删除该员工的额度记录（处理离部门场景）
    """
    if not employee_id:
        return

    from app.plugin.module_payment.expense.quota.model import QuotaModel
    from sqlalchemy import insert, delete as sa_delete, select

    try:
        crud = InstitutionCRUD(auth)
        institutions = await crud.list(
            search={
                "enterprise_id": enterprise_id,
                "status__ne": "INSTITUTION_DELETE",
                "applicable_scope": "department",
            },
            order_by=[{"id": "desc"}],
        )
        if not institutions:
            return

        tenant_id = auth.user.tenant_id if auth.user else 1
        dept_id_set = set(department_ids)

        for inst in institutions:
            inst_id = inst.institution_id
            scope_owner_ids_str = getattr(inst, "scope_owner_id_list", None) or getattr(inst, "department_id", None)
            if not inst_id or not scope_owner_ids_str:
                continue

            # 解析制度的部门ID列表
            import json
            try:
                scope_ids = json.loads(scope_owner_ids_str) if isinstance(scope_owner_ids_str, str) else scope_owner_ids_str
            except (json.JSONDecodeError, TypeError):
                scope_ids = [str(scope_owner_ids_str)] if scope_owner_ids_str else []
            scope_ids = [str(s) for s in scope_ids]

            # 判断是否匹配
            matched = bool(scope_ids and dept_id_set.intersection(scope_ids))

            if matched:
                # 检查是否已有记录
                check = select(QuotaModel).where(
                    QuotaModel.employee_id == employee_id,
                    QuotaModel.institution_id == inst_id,
                )
                existing = await auth.db.execute(check)
                if not existing.scalar_one_or_none():
                    total, available, status = _compute_quota_status(inst)
                    stmt = insert(QuotaModel).values(
                        employee_id=employee_id,
                        institution_id=inst_id,
                        out_biz_no=f"scope_{inst_id}_{employee_id}",
                        total_amount=total,
                        available_amount=available,
                        status=status,
                        enterprise_id=enterprise_id,
                        tenant_id=tenant_id,
                    )
                    await auth.db.execute(stmt)
                    log.info(f"部门联动 - 新增员工额度: employee_id={employee_id}, institution_id={inst_id}, status={status}, amount={total}")
            else:
                if not is_add:
                    continue
                del_stmt = sa_delete(QuotaModel).where(
                    QuotaModel.employee_id == employee_id,
                    QuotaModel.institution_id == inst_id,
                )
                await auth.db.execute(del_stmt)
                log.info(f"部门联动 - 删除员工额度: employee_id={employee_id}, institution_id={inst_id}")

        await auth.db.flush()
    except Exception as e:
        log.error(f"部门联动同步额度失败（不影响主体操作）: {e}")


async def sync_employee_add_to_department_institutions(
    auth: AuthSchema,
    enterprise_id: str,
    employee_id: str,
    department_ids: list[str],
) -> None:
    """员工加入部门时，为引用该部门的制度创建本地额度记录"""
    await _sync_employee_quota(auth, enterprise_id, employee_id, department_ids, is_add=True)


async def sync_employee_remove_from_department_institutions(
    auth: AuthSchema,
    enterprise_id: str,
    employee_id: str,
    department_ids: list[str],
) -> None:
    """员工离开部门时，从引用该部门的制度中删除本地额度记录"""
    await _sync_employee_quota(auth, enterprise_id, employee_id, department_ids, is_add=False)


async def remove_department_from_institution_scopes(
    auth: AuthSchema,
    enterprise_id: str,
    department_id: str,
) -> None:
    """
    当部门被停用时，扫描所有引用该部门的制度，移除该部门

    此方法被 department/service.py 的停用方法调用
    """
    try:
        crud = InstitutionCRUD(auth)
        institutions = await crud.list(
            search={"enterprise_id": enterprise_id, "status__ne": "INSTITUTION_DELETE"},
            order_by=[{"id": "desc"}],
        )
        if not institutions:
            return

        for inst in institutions:
            inst_id = inst.institution_id
            if not inst_id:
                continue

            from .service import InstitutionScopeService

            await InstitutionScopeService.scope_modify_service(
                auth=auth,
                institution_id=inst_id,
                data={
                    "enterprise_id": enterprise_id,
                    "adapter_type": "EMPLOYEE_DEPARTMENT",
                    "delete_owner_id_list": [department_id],
                },
            )
            log.info(f"已从制度 {inst_id} 中移除停用部门 {department_id}")
    except Exception as e:
        log.error(f"移除部门失败（不影响主体操作）: {e}")


async def sync_employee_to_all_institution(
    auth: AuthSchema, enterprise_id: str, employee_id: str
) -> None:
    """员工激活时，为全体员工（applicable_scope=all）的制度创建本地额度记录

    根据制度有效期和发放模式判断状态：有效期内定额→ACTIVE，否则→PENDING
    """
    if not employee_id or not enterprise_id:
        return
    try:
        crud = InstitutionCRUD(auth)
        institutions = await crud.list(
            search={"enterprise_id": enterprise_id, "status__ne": "INSTITUTION_DELETE", "applicable_scope": "all"},
            order_by=[{"id": "desc"}],
        )
        if not institutions:
            return
        from app.plugin.module_payment.expense.quota.model import QuotaModel
        from sqlalchemy import insert, select
        tenant_id = auth.user.tenant_id if auth.user else 1
        for inst in institutions:
            inst_id = inst.institution_id
            if not inst_id:
                continue
            check = select(QuotaModel).where(QuotaModel.employee_id == employee_id, QuotaModel.institution_id == inst_id)
            existing = await auth.db.execute(check)
            if existing.scalar_one_or_none():
                continue
            total, available, status = _compute_quota_status(inst)
            stmt = insert(QuotaModel).values(
                employee_id=employee_id, institution_id=inst_id,
                out_biz_no=f"all_{inst_id}_{employee_id}",
                total_amount=total, available_amount=available,
                status=status,
                enterprise_id=enterprise_id, tenant_id=tenant_id,
            )
            await auth.db.execute(stmt)
            log.info(f"全员联动 - 新增员工额度: employee_id={employee_id}, institution_id={inst_id}, status={status}, amount={total}")
        await auth.db.flush()
    except Exception as e:
        log.error(f"全员制度联动失败: {e}")


async def remove_employee_from_institution_scopes(
    auth: AuthSchema,
    enterprise_id: str,
    employee_id: str,
) -> None:
    """
    当员工被解约时，从所有费控制度中移除该员工

    处理三种 scope 模式：
    - employee（指定员工）：调支付宝 scope.modify 移除
    - department/all（按部门/全员）：Alipay 自动处理，只需清理本地额度

    此方法被 employee/service.py 的删除方法调用
    """
    from app.plugin.module_payment.expense.quota.model import QuotaModel
    from sqlalchemy import delete as sa_delete

    try:
        crud = InstitutionCRUD(auth)
        institutions = await crud.list(
            search={"enterprise_id": enterprise_id, "status__ne": "INSTITUTION_DELETE"},
            order_by=[{"id": "desc"}],
        )
        if not institutions:
            return

        for inst in institutions:
            inst_id = inst.institution_id
            scope = getattr(inst, "applicable_scope", "")
            if not inst_id:
                continue

            # 员工模式 → 调支付宝移除
            if scope == "employee":
                from .service import InstitutionScopeService
                try:
                    await InstitutionScopeService.scope_modify_service(
                        auth=auth, institution_id=inst_id,
                        data={
                            "enterprise_id": enterprise_id,
                            "adapter_type": "EMPLOYEE_SELECT",
                            "delete_owner_id_list": [employee_id],
                        },
                    )
                    log.info(f"已从制度 {inst_id} 中移除解约员工 {employee_id}")
                except Exception as e:
                    log.warning(f"支付宝移除员工失败（继续清理本地）: {e}")

            # department/all → Alipay 自动处理，无需调 scope.modify

            # 清理本地 pay_expense_quota
            del_stmt = sa_delete(QuotaModel).where(
                QuotaModel.employee_id == employee_id,
                QuotaModel.institution_id == inst_id,
            )
            await auth.db.execute(del_stmt)
            log.info(f"已清理本地额度: employee_id={employee_id}, institution_id={inst_id}")

        await auth.db.flush()
    except Exception as e:
        log.error(f"移除员工失败（不影响主体操作）: {e}")