/*
 * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.micode.notes.data;

import android.content.Context;
import android.database.Cursor;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Data;
import android.telephony.PhoneNumberUtils;
import android.util.Log;

import java.util.HashMap;

<<<<<<< HEAD
<<<<<<< HEAD:app/src/main/java/net/micode/notes/data/Contact.java
public class Contact {
    private static HashMap<String, String> sContactCache;//建立哈希表
    private static final String TAG = "Contact";//设置TAG值为'联系'
=======
public class Contact {//连接类
    private static HashMap<String, String> sContactCache;//建立哈希表
    private static final String TAG = "Contact";//设置TAG的值为'连接'
>>>>>>> 0444a65d4e44c509f57ad301a5a2b59200d62177:src/data/Contact.java
=======
public class Contact {                                                                              //连接类
    private static HashMap<String, String> sContactCache;                                           //定义连接哈希表
    private static final String TAG = "Contact";                                                    //设置TAG的值为'连接'
>>>>>>> b12b9a8449498593360310c554053628b31cc8c9

    private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
    + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
    + " AND " + Data.RAW_CONTACT_ID + " IN "
            + "(SELECT raw_contact_id "
            + " FROM phone_lookup"
            + " WHERE min_match = '+')";                                                            //SQL语句

    public static String getContact(Context context, String phoneNumber) {                          //获取连接
        if(sContactCache == null) {
            sContactCache = new HashMap<String, String>();                                          //连接哈希表为空时创建连接哈希表
        }

        if(sContactCache.containsKey(phoneNumber)) {
            return sContactCache.get(phoneNumber);                                                  //连接哈希表存在电话号码时获取值
        }

        String selection = CALLER_ID_SELECTION.replace("+",
                PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));                                  //将电话号码进行函数处理并代替'+'符号
        Cursor cursor = context.getContentResolver().query(                                         //用于查询的结果集
                Data.CONTENT_URI,                                                                   //通话记录uri
                new String [] { Phone.DISPLAY_NAME },
                selection,
                new String[] { phoneNumber },
                null);                                                                     //查询指定号码相关联系人名字

        if (cursor != null && cursor.moveToFirst()) {
            try {                                                                                   //有结果时
                String name = cursor.getString(0);                                                //获取联系人名字
                sContactCache.put(phoneNumber, name);                                               //缓存电话号码与联系人名字
                return name;
            } catch (IndexOutOfBoundsException e) {
                Log.e(TAG, " Cursor get string error " + e.toString());                        //日志记录信息
                return null;
            } finally {
                cursor.close();                                                                     //关闭结果集
            }
        } else {
            Log.d(TAG, "No contact matched with number:" + phoneNumber);                       //日志记录信息
            return null;                                                                            //没找到，返回NULL
        }
    }
}