from rest_framework.permissions import BasePermission
from django.core.cache import cache as default_cache
from utils.db_utils import MongoDBTools


class RegisterViewPermission(BasePermission):
    def has_permission(self, request, view):
        try:
            user = request.user
            if user['username'] == "管理员":
                return True
            else:
                return False
        except:
            return False


class ModulePermission(BasePermission):
    def has_permission(self, request, view):
        try:
            user = request.user
            user_modules = user.get("user_modules")
            path = request.path
            if path.startswith("/equipment") and user_modules == "1":
                return True
            else:
                return False
        except:
            return False


class QXZDeviceDetailPermission(BasePermission):
    message = "非此账户下设备"
    
    def has_permission(self, request, view):
        uid = request.user
        device_id = request.query_params.get("device_id")
        if device_id is None:
            return True
        qxz_list_cache = default_cache.get(str(uid)+"_qxz_list")
        if qxz_list_cache:
            if device_id in qxz_list_cache:
                return True
            else:
                return False
        else:
            wheres = {
                "device_type_id":5,
                '$or': [
                    {'owner_uid': uid},
                    {'user_dealer': uid}
                ]
            }
            project = {
                'device_id': '$device_id',
            }
            m = MongoDBTools(db_name='smartfarming', table_name='sa_device')
            data = m.find_many(wheres=wheres, options=project)
            qxz_list_cache = []
            for item in data:
                qxz_list_cache.append(item["device_id"])
            default_cache.set(str(uid)+"_qxz_list", qxz_list_cache,60*5)
            if device_id in qxz_list_cache:
                return True
            else:
                return False