Refactoring and adding TOS check before transcribing

This cl just adds a check before starting a transcription job
to verify that the user has accepted the appropriate TOS. Its
a rather big cl just because it had to expose some TOS acceptance
details that were previously encapsulated in the VoicemailTosMessageCreator.

Bug: 69267260
Test: manual and unit tests
PiperOrigin-RevId: 176132370
Change-Id: Ic28fb197a07f9df7a9b5f1729c84566cba0890fc
diff --git a/java/com/android/voicemail/VoicemailVersionConstants.java b/java/com/android/voicemail/VoicemailVersionConstants.java
new file mode 100644
index 0000000..44ef661
--- /dev/null
+++ b/java/com/android/voicemail/VoicemailVersionConstants.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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 com.android.voicemail;
+
+/**
+ * Shared preference keys and values relating to the voicemail version that the user has accepted.
+ * Note: these can be carrier dependent.
+ */
+public interface VoicemailVersionConstants {
+  // Preference key to check which version of the Verizon ToS that the user has accepted.
+  String PREF_VVM3_TOS_VERSION_ACCEPTED_KEY = "vvm3_tos_version_accepted";
+
+  // Preference key to check which version of the Google Dialer ToS that the user has accepted.
+  String PREF_DIALER_TOS_VERSION_ACCEPTED_KEY = "dialer_tos_version_accepted";
+
+  // Preference key to check which feature version the user has acknowledged
+  String PREF_DIALER_FEATURE_VERSION_ACKNOWLEDGED_KEY = "dialer_feature_version_acknowledged";
+
+  int CURRENT_VVM3_TOS_VERSION = 2;
+  int CURRENT_DIALER_TOS_VERSION = 1;
+  int LEGACY_VOICEMAIL_FEATURE_VERSION = 1; // original visual voicemail
+  int TRANSCRIPTION_VOICEMAIL_FEATURE_VERSION = 2;
+  int CURRENT_VOICEMAIL_FEATURE_VERSION = TRANSCRIPTION_VOICEMAIL_FEATURE_VERSION;
+}