1/*
2 * Copyright (C) 2010 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
17package com.android.exchange;
18
19import com.android.emailcommon.provider.EmailContent;
20import com.android.emailcommon.provider.EmailContent.AccountColumns;
21import com.android.emailcommon.provider.EmailContent.MailboxColumns;
22import com.android.emailcommon.provider.Mailbox;
23
24import android.accounts.Account;
25import android.accounts.OperationCanceledException;
26import android.app.Service;
27import android.content.AbstractThreadedSyncAdapter;
28import android.content.ContentProviderClient;
29import android.content.ContentResolver;
30import android.content.Context;
31import android.content.Intent;
32import android.content.SyncResult;
33import android.database.Cursor;
34import android.os.Bundle;
35import android.os.IBinder;
36import android.util.Log;
37
38public class EmailSyncAdapterService extends Service {
39    private static final String TAG = "EAS EmailSyncAdapterService";
40    private static SyncAdapterImpl sSyncAdapter = null;
41    private static final Object sSyncAdapterLock = new Object();
42
43    private static final String[] ID_PROJECTION = new String[] {EmailContent.RECORD_ID};
44    private static final String ACCOUNT_AND_TYPE_INBOX =
45        MailboxColumns.ACCOUNT_KEY + "=? AND " + MailboxColumns.TYPE + '=' + Mailbox.TYPE_INBOX;
46
47    public EmailSyncAdapterService() {
48        super();
49    }
50
51    private static class SyncAdapterImpl extends AbstractThreadedSyncAdapter {
52        private Context mContext;
53
54        public SyncAdapterImpl(Context context) {
55            super(context, true /* autoInitialize */);
56            mContext = context;
57        }
58
59        @Override
60        public void onPerformSync(Account account, Bundle extras,
61                String authority, ContentProviderClient provider, SyncResult syncResult) {
62            try {
63                EmailSyncAdapterService.performSync(mContext, account, extras,
64                        authority, provider, syncResult);
65            } catch (OperationCanceledException e) {
66            }
67        }
68    }
69
70    @Override
71    public void onCreate() {
72        super.onCreate();
73        synchronized (sSyncAdapterLock) {
74            if (sSyncAdapter == null) {
75                sSyncAdapter = new SyncAdapterImpl(getApplicationContext());
76            }
77        }
78    }
79
80    @Override
81    public IBinder onBind(Intent intent) {
82        return sSyncAdapter.getSyncAdapterBinder();
83    }
84
85    /**
86     * Partial integration with system SyncManager; we tell our EAS ExchangeService to start an
87     * inbox sync when we get the signal from the system SyncManager.
88     */
89    private static void performSync(Context context, Account account, Bundle extras,
90            String authority, ContentProviderClient provider, SyncResult syncResult)
91            throws OperationCanceledException {
92        ContentResolver cr = context.getContentResolver();
93        Log.i(TAG, "performSync");
94
95        // Find the (EmailProvider) account associated with this email address
96        Cursor accountCursor =
97            cr.query(com.android.emailcommon.provider.Account.CONTENT_URI,
98                    ID_PROJECTION, AccountColumns.EMAIL_ADDRESS + "=?", new String[] {account.name},
99                    null);
100        try {
101            if (accountCursor.moveToFirst()) {
102                long accountId = accountCursor.getLong(0);
103                // Now, find the inbox associated with the account
104                Cursor mailboxCursor = cr.query(Mailbox.CONTENT_URI, ID_PROJECTION,
105                        ACCOUNT_AND_TYPE_INBOX, new String[] {Long.toString(accountId)}, null);
106                try {
107                     if (mailboxCursor.moveToFirst()) {
108                        Log.i(TAG, "Mail sync requested for " + account.name);
109                        // Ask for a sync from our sync manager
110                        ExchangeService.serviceRequest(mailboxCursor.getLong(0),
111                                ExchangeService.SYNC_KICK);
112                    }
113                } finally {
114                    mailboxCursor.close();
115                }
116            }
117        } finally {
118            accountCursor.close();
119        }
120    }
121}