1/**
2 * Copyright (c) 2023-2023 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
16import ArrayList from '@ohos.util.ArrayList';
17import { CardItemInfo } from '@ohos/common';
18import RecommendCardsDataPool from '../datapool/RecommendCardsDataPool';
19
20const TAG = 'BaseDataSource';
21
22/**
23 * 推荐卡片资源池数据源：基础数据源
24 */
25export default abstract class BaseDataSource {
26  public mRecommendCardsDataPool: RecommendCardsDataPool = RecommendCardsDataPool.getInstance();
27
28  /**
29   * 获取卡片资源池的数据列表
30   *
31   * @return 卡片资源池的数据列表
32   */
33  public getDataList(): ArrayList<CardItemInfo> {
34    // 1、获取所有卡片map
35    let allDataMap: Map<string, CardItemInfo> = this.getAllDataMap();
36
37    // 2、获取数据源数据
38    let sourceDataList: string[] = this.getSourceDataList();
39
40    // 3、获取阈值内的数据
41    return this.getThresholdDataList(sourceDataList, allDataMap);
42  }
43
44  /**
45   * 获取卡片资源池阈值
46   *
47   * @return 卡片资源池阈值
48   */
49  public abstract getThreshold(): number;
50
51  /**
52   * 获取卡片资源池数据源名
53   *
54   * @return 卡片资源池数据源名
55   */
56  public abstract getName(): string;
57
58  /**
59   * 获取所有卡片map
60   *
61   * @return 所有卡片map
62   */
63  private getAllDataMap(): Map<string, CardItemInfo> {
64    return this.mRecommendCardsDataPool.getAllDataMap();
65  }
66
67  /**
68   * 获取阈值内的数据
69   *
70   * @param dataSourceList 数据源的数据
71   * @param allDataMap 所有数据集合
72   * @returns 阈值内的数据
73   */
74  protected getThresholdDataList(dataSourceList: string[],
75    allDataMap: Map<string, CardItemInfo>): ArrayList<CardItemInfo> {
76    let dataList: ArrayList<CardItemInfo> = new ArrayList();
77    for (let i: number = 0; i < dataSourceList.length; i++) {
78      if (dataSourceList.length === this.getThreshold()) {
79        break;
80      }
81      let cardItemBundleName = dataSourceList[i];
82      if (!allDataMap.has(cardItemBundleName)) {
83        continue;
84      }
85      let cardItemInfo: CardItemInfo = allDataMap.get(cardItemBundleName);
86      dataList.add(cardItemInfo);
87    }
88    return dataList;
89  }
90
91  /**
92   * 获取数据源的数据
93   *
94   * @returns 数据源的数据
95   */
96  protected abstract getSourceDataList(): string[];
97}
98