1 /*
2 * Copyright 2024 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package com.android.photopicker.core.events
18
19 import java.security.SecureRandom
20
21 // The sessionId can contain at most 20 bits which gives ~1M possibilities for the same, so ~0.5%
22 // collision probability in 100 values
23 const val MAX_SESSION_ID: Int = 1 shl 20
24
25 /**
26 * Generates a random integer between 1 and [MAX_SESSION_ID] to identify a particular photopicker
27 * session. The id gets attached to all the picker atoms so that it is easy to identify logs that
28 * are session specific.
29 *
30 * @return photopicker sessionId
31 */
generatePickerSessionIdnull32 fun generatePickerSessionId(): Int {
33 val getRandom = SecureRandom()
34 return 1 + getRandom.nextInt(MAX_SESSION_ID)
35 }
36