"""总会员（包含式会员）：购买一个会员，可接多个子会员类型订单。"""
from products.models import Huiyuan, Huiyuangoumai


def get_bundle_included_ids(club_id, bundle_huiyuan_id):
    from jituan.models import ClubHuiyuanBundleInclude

    if not club_id or not bundle_huiyuan_id:
        return []
    return list(
        ClubHuiyuanBundleInclude.query.filter(
            club_id=club_id,
            bundle_huiyuan_id=bundle_huiyuan_id,
        ).values_list('included_huiyuan_id', flat=True)
    )


def is_bundle_huiyuan(huiyuan_id):
    try:
        return bool(Huiyuan.query.get(huiyuan_id=huiyuan_id).is_bundle)
    except Huiyuan.DoesNotExist:
        return False


def user_has_huiyuan_access(yonghu_id, required_huiyuan_id, club_id=None):
    """用户是否可接要求 required_huiyuan_id 的会员单（含总会员覆盖）。"""
    if not required_huiyuan_id:
        return True

    req = str(required_huiyuan_id).strip()

    def _record_valid(rec):
        return (
            rec
            and not rec.jiance_shifou_daoqi()
            and rec.huiyuan_zhuangtai == 1
        )

    try:
        direct = Huiyuangoumai.query.get(yonghu_id=yonghu_id, huiyuan_id=req)
        if _record_valid(direct):
            return True
    except Huiyuangoumai.DoesNotExist:
        pass

    bundle_ids = set(
        Huiyuan.query.filter(is_bundle=True).values_list('huiyuan_id', flat=True)
    )
    if not bundle_ids:
        return False

    for rec in Huiyuangoumai.query.filter(yonghu_id=yonghu_id, huiyuan_id__in=bundle_ids):
        if not _record_valid(rec):
            continue
        cid = club_id or rec.club_id or ''
        included = get_bundle_included_ids(cid, rec.huiyuan_id)
        if req in {str(x) for x in included}:
            return True
    return False


def enrich_clumber_item(record):
    """为 clumber 条目附加总会员覆盖的子会员 ID 列表（旧端忽略该字段）。"""
    item = {
        'huiyuanid': record.huiyuan_id,
        'huiyuanming': record.jieshao or f'会员{record.huiyuan_id}',
        'daoqi': record.daoqi_time,
    }
    if is_bundle_huiyuan(record.huiyuan_id):
        item['is_bundle'] = True
        item['included_huiyuan_ids'] = get_bundle_included_ids(
            record.club_id or '', record.huiyuan_id,
        )
    return item


def save_bundle_includes(club_id, bundle_huiyuan_id, included_ids):
    """保存俱乐部总会员包含的子会员（须为本俱乐部已上架的普通会员）。"""
    from jituan.models import ClubHuiyuanBundleInclude, ClubHuiyuanPrice

    if not is_bundle_huiyuan(bundle_huiyuan_id):
        return None, '该会员不是总会员类型'

    enabled = set(
        ClubHuiyuanPrice.query.filter(club_id=club_id, is_enabled=True).values_list(
            'huiyuan_id', flat=True,
        )
    )
    bundle_ids = set(
        Huiyuan.query.filter(is_bundle=True).values_list('huiyuan_id', flat=True)
    )
    cleaned = []
    for hid in included_ids or []:
        hid = str(hid).strip()
        if not hid or hid == bundle_huiyuan_id:
            continue
        if hid not in enabled:
            return None, f'子会员 {hid} 未在本俱乐部上架'
        if hid in bundle_ids:
            return None, '总会员不能包含另一个总会员'
        if not Huiyuan.query.filter(huiyuan_id=hid).exists():
            return None, f'子会员 {hid} 不存在'
        cleaned.append(hid)

    if not cleaned:
        return None, '请至少选择一个包含的子会员'

    ClubHuiyuanBundleInclude.query.filter(
        club_id=club_id, bundle_huiyuan_id=bundle_huiyuan_id,
    ).delete()
    for hid in cleaned:
        ClubHuiyuanBundleInclude.query.create(
            club_id=club_id,
            bundle_huiyuan_id=bundle_huiyuan_id,
            included_huiyuan_id=hid,
        )
    return {'included_huiyuan_ids': cleaned}, None