1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5 * except in compliance with the License. You may obtain a copy of the License at
6 *
7 *      http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the
10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11 * KIND, either express or implied. See the License for the specific language governing
12 * permissions and limitations under the License.
13 */
14
15package com.android.egg.neko;
16
17import android.content.Context;
18import android.content.SharedPreferences;
19import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
20
21import java.util.ArrayList;
22import java.util.List;
23import java.util.Map;
24
25public class PrefState implements OnSharedPreferenceChangeListener {
26
27    private static final String FILE_NAME = "mPrefs";
28
29    private static final String FOOD_STATE = "food";
30
31    private static final String CAT_KEY_PREFIX = "cat:";
32
33    private final Context mContext;
34    private final SharedPreferences mPrefs;
35    private PrefsListener mListener;
36
37    public PrefState(Context context) {
38        mContext = context;
39        mPrefs = mContext.getSharedPreferences(FILE_NAME, 0);
40    }
41
42    // Can also be used for renaming.
43    public void addCat(Cat cat) {
44        mPrefs.edit()
45              .putString(CAT_KEY_PREFIX + String.valueOf(cat.getSeed()), cat.getName())
46              .apply();
47    }
48
49    public void removeCat(Cat cat) {
50        mPrefs.edit().remove(CAT_KEY_PREFIX + String.valueOf(cat.getSeed())).apply();
51    }
52
53    public List<Cat> getCats() {
54        ArrayList<Cat> cats = new ArrayList<>();
55        Map<String, ?> map = mPrefs.getAll();
56        for (String key : map.keySet()) {
57            if (key.startsWith(CAT_KEY_PREFIX)) {
58                long seed = Long.parseLong(key.substring(CAT_KEY_PREFIX.length()));
59                Cat cat = new Cat(mContext, seed);
60                cat.setName(String.valueOf(map.get(key)));
61                cats.add(cat);
62            }
63        }
64        return cats;
65    }
66
67    public int getFoodState() {
68        return mPrefs.getInt(FOOD_STATE, 0);
69    }
70
71    public void setFoodState(int foodState) {
72        mPrefs.edit().putInt(FOOD_STATE, foodState).apply();
73    }
74
75    public void setListener(PrefsListener listener) {
76        mListener = listener;
77        if (mListener != null) {
78            mPrefs.registerOnSharedPreferenceChangeListener(this);
79        } else {
80            mPrefs.unregisterOnSharedPreferenceChangeListener(this);
81        }
82    }
83
84    @Override
85    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
86        mListener.onPrefsChanged();
87    }
88
89    public interface PrefsListener {
90        void onPrefsChanged();
91    }
92}
93