1/*
2 * Copyright (C) 2014 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.bluetooth.mapclient;
18
19import android.util.Log;
20
21import org.json.JSONException;
22import org.json.JSONObject;
23import org.xmlpull.v1.XmlPullParser;
24import org.xmlpull.v1.XmlPullParserException;
25import org.xmlpull.v1.XmlPullParserFactory;
26
27import java.io.DataInputStream;
28import java.io.IOException;
29import java.math.BigInteger;
30import java.util.HashMap;
31
32/**
33 * Object representation of event report received by MNS
34 * <p>
35 * This object will be received in {@link Client#EVENT_EVENT_REPORT}
36 * callback message.
37 */
38public class EventReport {
39    private static final String TAG = "EventReport";
40    private final Type mType;
41    private final String mHandle;
42    private final String mFolder;
43    private final String mOldFolder;
44    private final Bmessage.Type mMsgType;
45
46    private EventReport(HashMap<String, String> attrs) throws IllegalArgumentException {
47        mType = parseType(attrs.get("type"));
48
49        if (mType != Type.MEMORY_FULL && mType != Type.MEMORY_AVAILABLE) {
50            String handle = attrs.get("handle");
51            try {
52                /* just to validate */
53                new BigInteger(attrs.get("handle"), 16);
54
55                mHandle = attrs.get("handle");
56            } catch (NumberFormatException e) {
57                throw new IllegalArgumentException("Invalid value for handle:" + handle);
58            }
59        } else {
60            mHandle = null;
61        }
62
63        mFolder = attrs.get("folder");
64
65        mOldFolder = attrs.get("old_folder");
66
67        if (mType != Type.MEMORY_FULL && mType != Type.MEMORY_AVAILABLE) {
68            String s = attrs.get("msg_type");
69
70            if (s != null && s.isEmpty()) {
71                // Some phones (e.g. SGS3 for MessageDeleted) send empty
72                // msg_type, in such case leave it as null rather than throw
73                // parse exception
74                mMsgType = null;
75            } else {
76                mMsgType = parseMsgType(s);
77            }
78        } else {
79            mMsgType = null;
80        }
81    }
82
83    static EventReport fromStream(DataInputStream in) {
84        EventReport ev = null;
85
86        try {
87            XmlPullParser xpp = XmlPullParserFactory.newInstance().newPullParser();
88            xpp.setInput(in, "utf-8");
89
90            int event = xpp.getEventType();
91            while (event != XmlPullParser.END_DOCUMENT) {
92                switch (event) {
93                    case XmlPullParser.START_TAG:
94                        if (xpp.getName().equals("event")) {
95                            HashMap<String, String> attrs = new HashMap<String, String>();
96
97                            for (int i = 0; i < xpp.getAttributeCount(); i++) {
98                                attrs.put(xpp.getAttributeName(i), xpp.getAttributeValue(i));
99                            }
100
101                            ev = new EventReport(attrs);
102
103                            // return immediately, only one event should be here
104                            return ev;
105                        }
106                        break;
107                }
108
109                event = xpp.next();
110            }
111
112        } catch (XmlPullParserException e) {
113            Log.e(TAG, "XML parser error when parsing XML", e);
114        } catch (IOException e) {
115            Log.e(TAG, "I/O error when parsing XML", e);
116        } catch (IllegalArgumentException e) {
117            Log.e(TAG, "Invalid event received", e);
118        }
119
120        return ev;
121    }
122
123    private Type parseType(String type) throws IllegalArgumentException {
124        for (Type t : Type.values()) {
125            if (t.toString().equals(type)) {
126                return t;
127            }
128        }
129
130        throw new IllegalArgumentException("Invalid value for type: " + type);
131    }
132
133    private Bmessage.Type parseMsgType(String msgType) throws IllegalArgumentException {
134        for (Bmessage.Type t : Bmessage.Type.values()) {
135            if (t.name().equals(msgType)) {
136                return t;
137            }
138        }
139
140        throw new IllegalArgumentException("Invalid value for msg_type: " + msgType);
141    }
142
143    /**
144     * @return {@link EventReport.Type} object corresponding to
145     * <code>type</code> application parameter in MAP specification
146     */
147    public Type getType() {
148        return mType;
149    }
150
151    /**
152     * @return value corresponding to <code>handle</code> parameter in MAP
153     * specification
154     */
155    public String getHandle() {
156        return mHandle;
157    }
158
159    /**
160     * @return value corresponding to <code>folder</code> parameter in MAP
161     * specification
162     */
163    public String getFolder() {
164        return mFolder;
165    }
166
167    /**
168     * @return value corresponding to <code>old_folder</code> parameter in MAP
169     * specification
170     */
171    public String getOldFolder() {
172        return mOldFolder;
173    }
174
175    /**
176     * @return {@link Bmessage.Type} object corresponding to
177     * <code>msg_type</code> application parameter in MAP specification
178     */
179    public Bmessage.Type getMsgType() {
180        return mMsgType;
181    }
182
183    @Override
184    public String toString() {
185        JSONObject json = new JSONObject();
186
187        try {
188            json.put("type", mType);
189            json.put("handle", mHandle);
190            json.put("folder", mFolder);
191            json.put("old_folder", mOldFolder);
192            json.put("msg_type", mMsgType);
193        } catch (JSONException e) {
194            // do nothing
195        }
196
197        return json.toString();
198    }
199
200    public enum Type {
201        NEW_MESSAGE("NewMessage"),
202        DELIVERY_SUCCESS("DeliverySuccess"),
203        SENDING_SUCCESS("SendingSuccess"),
204        DELIVERY_FAILURE("DeliveryFailure"),
205        SENDING_FAILURE("SendingFailure"),
206        MEMORY_FULL("MemoryFull"),
207        MEMORY_AVAILABLE("MemoryAvailable"),
208        MESSAGE_DELETED("MessageDeleted"),
209        MESSAGE_SHIFT("MessageShift");
210
211        private final String mSpecName;
212
213        Type(String specName) {
214            mSpecName = specName;
215        }
216
217        @Override
218        public String toString() {
219            return mSpecName;
220        }
221    }
222}
223