"""操作审计。"""
from decimal import Decimal

from merchant_ops.constants import ACTOR_MERCHANT, ACTOR_STAFF
from merchant_ops.models import MerchantStaffAuditLog


def write_audit(
    merchant_id,
    operator_user_id,
    operator_type,
    action,
    *,
    staff_member_id=None,
    resource_type='',
    resource_id='',
    value_before=None,
    value_after=None,
    amount=None,
    request_ip='',
    remark='',
):
    MerchantStaffAuditLog.objects.create(
        merchant_id=merchant_id,
        operator_user_id=operator_user_id,
        operator_type=operator_type,
        staff_member_id=staff_member_id,
        action=action,
        resource_type=resource_type,
        resource_id=str(resource_id) if resource_id else '',
        value_before=value_before,
        value_after=value_after,
        amount=Decimal(str(amount)) if amount is not None else None,
        request_ip=request_ip or '',
        remark=remark or '',
    )


def audit_staff(member, action, request, **kwargs):
    write_audit(
        member.merchant_id,
        member.staff_user_id,
        ACTOR_STAFF,
        action,
        staff_member_id=member.id,
        request_ip=_client_ip(request),
        **kwargs,
    )


def audit_owner(merchant_id, operator_id, action, request, **kwargs):
    write_audit(
        merchant_id,
        operator_id,
        ACTOR_MERCHANT,
        action,
        request_ip=_client_ip(request),
        **kwargs,
    )


def _client_ip(request):
    xff = request.META.get('HTTP_X_FORWARDED_FOR')
    if xff:
        return xff.split(',')[0].strip()
    return request.META.get('REMOTE_ADDR', '') or ''