1/*
2 * Copyright (C) 2016 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.printservice.recommendation;
18
19import android.content.res.Configuration;
20import android.printservice.recommendation.RecommendationInfo;
21import android.printservice.recommendation.RecommendationService;
22import android.printservice.PrintService;
23import android.util.Log;
24import com.android.printservice.recommendation.plugin.hp.HPRecommendationPlugin;
25import com.android.printservice.recommendation.plugin.mdnsFilter.MDNSFilterPlugin;
26import com.android.printservice.recommendation.plugin.mdnsFilter.VendorConfig;
27import com.android.printservice.recommendation.plugin.mopria.MopriaRecommendationPlugin;
28import com.android.printservice.recommendation.plugin.samsung.SamsungRecommendationPlugin;
29import com.android.printservice.recommendation.plugin.xerox.XeroxPrintServiceRecommendationPlugin;
30import org.xmlpull.v1.XmlPullParserException;
31
32import java.io.IOException;
33import java.util.ArrayList;
34
35/**
36 * Service that recommends {@link PrintService print services} that might be a good idea to install.
37 */
38public class RecommendationServiceImpl extends RecommendationService
39        implements RemotePrintServicePlugin.OnChangedListener {
40    private static final String LOG_TAG = "PrintServiceRecService";
41
42    /** All registered plugins */
43    private ArrayList<RemotePrintServicePlugin> mPlugins;
44
45    @Override
46    public void onConnected() {
47        mPlugins = new ArrayList<>();
48
49        try {
50            for (VendorConfig config : VendorConfig.getAllConfigs(this)) {
51                try {
52                    mPlugins.add(new RemotePrintServicePlugin(new MDNSFilterPlugin(this,
53                            config.name, config.packageName, config.mDNSNames), this, false));
54                } catch (Exception e) {
55                    Log.e(LOG_TAG, "Could not initiate simple MDNS plugin for " +
56                            config.packageName, e);
57                }
58            }
59        } catch (IOException | XmlPullParserException e) {
60            new RuntimeException("Could not parse vendorconfig", e);
61        }
62
63        try {
64            mPlugins.add(new RemotePrintServicePlugin(new HPRecommendationPlugin(this), this,
65                    false));
66        } catch (Exception e) {
67            Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_hp) + " plugin",
68                    e);
69        }
70
71        try {
72            mPlugins.add(new RemotePrintServicePlugin(new MopriaRecommendationPlugin(this), this,
73                    true));
74        } catch (Exception e) {
75            Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_morpia) +
76                    " plugin", e);
77        }
78
79        try {
80            mPlugins.add(new RemotePrintServicePlugin(new SamsungRecommendationPlugin(this), this,
81                    false));
82        } catch (Exception e) {
83            Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_samsung) +
84                    " plugin", e);
85        }
86
87        try {
88            mPlugins.add(new RemotePrintServicePlugin(
89                    new XeroxPrintServiceRecommendationPlugin(this), this, false));
90        } catch (Exception e) {
91            Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_xerox) +
92                    " plugin", e);
93        }
94
95        final int numPlugins = mPlugins.size();
96        for (int i = 0; i < numPlugins; i++) {
97            try {
98                mPlugins.get(i).start();
99            } catch (RemotePrintServicePlugin.PluginException e) {
100                Log.e(LOG_TAG, "Could not start plugin", e);
101            }
102        }
103    }
104
105    @Override
106    public void onDisconnected() {
107        final int numPlugins = mPlugins.size();
108        for (int i = 0; i < numPlugins; i++) {
109            try {
110                mPlugins.get(i).stop();
111            } catch (RemotePrintServicePlugin.PluginException e) {
112                Log.e(LOG_TAG, "Could not stop plugin", e);
113            }
114        }
115    }
116
117    @Override
118    public void onConfigurationChanged(Configuration newConfig) {
119        // Need to update plugin names as they might be localized
120        onChanged();
121    }
122
123    @Override
124    public void onChanged() {
125        ArrayList<RecommendationInfo> recommendations = new ArrayList<>();
126
127        final int numPlugins = mPlugins.size();
128        for (int i = 0; i < numPlugins; i++) {
129            RemotePrintServicePlugin plugin = mPlugins.get(i);
130
131            try {
132                int numPrinters = plugin.getNumPrinters();
133
134                if (numPrinters > 0) {
135                    recommendations.add(new RecommendationInfo(plugin.packageName,
136                            getString(plugin.name), numPrinters,
137                            plugin.recommendsMultiVendorService));
138                }
139            } catch (Exception e) {
140                Log.e(LOG_TAG, "Could not read state of plugin for " + plugin.packageName, e);
141            }
142        }
143
144        updateRecommendations(recommendations);
145    }
146}
147