1 /*
2  * Copyright (c) 2022 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef OHOS_DM_DISCOVERY_FILTER_H
17 #define OHOS_DM_DISCOVERY_FILTER_H
18 
19 #include <vector>
20 #include <string>
21 
22 #include "nlohmann/json.hpp"
23 
24 namespace OHOS {
25 namespace DistributedHardware {
26 struct DmDeviceFilters {
27     std::string type;
28     int32_t value;
29 };
30 
31 struct DmDeviceFilterOption {
32     std::string filterOp_;
33     std::vector<DmDeviceFilters> filters_;
34     int32_t ParseFilterJson(const std::string &str);
35     void ParseFilterOptionJson(const std::string &str);
36     int32_t TransformToFilter(const std::string &filterOptions);
37     void TransformFilterOption(const std::string &filterOptions);
38 };
39 
40 struct DmDeviceFilterPara {
41     bool isOnline;
42     int32_t range;
43     bool isTrusted;
44     int32_t authForm;
45     int32_t deviceType;
46 };
47 
48 class DmDiscoveryFilter {
49 public:
50     bool IsValidDevice(const std::string &filterOp, const std::vector<DmDeviceFilters> &filters,
51         const DmDeviceFilterPara &filterPara);
52 private:
53     bool FilterByDeviceState(int32_t value, bool isActive);
54     bool FilterByRange(int32_t value, int32_t range);
55     bool FilterByAuthForm(int32_t value, int32_t authForm);
56     bool FilterByDeviceType(int32_t value, int32_t deviceType);
57     bool FilterByType(const DmDeviceFilters &filters, const DmDeviceFilterPara &filterPara);
58     bool FilterOr(const std::vector<DmDeviceFilters> &filters, const DmDeviceFilterPara &filterPara);
59     bool FilterAnd(const std::vector<DmDeviceFilters> &filters, const DmDeviceFilterPara &filterPara);
60 };
61 } // namespace DistributedHardware
62 } // namespace OHOS
63 #endif // OHOS_DM_DISCOVERY_FILTER_H
64