Method: DefaultPreferencesHandler()

1: /*
2: * *************************************************************************************************************************************************************
3: *
4: * TheseFoolishThings: Miscellaneous utilities
5: * http://tidalwave.it/projects/thesefoolishthings
6: *
7: * Copyright (C) 2009 - 2025 by Tidalwave s.a.s. (http://tidalwave.it)
8: *
9: * *************************************************************************************************************************************************************
10: *
11: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
12: * You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * 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
17: * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18: *
19: * *************************************************************************************************************************************************************
20: *
21: * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
22: * git clone https://github.com/tidalwave-it/thesefoolishthings-src
23: *
24: * *************************************************************************************************************************************************************
25: */
26: package it.tidalwave.util.impl;
27:
28: import jakarta.annotation.Nonnull;
29: import java.util.HashMap;
30: import java.util.Locale;
31: import java.util.Map;
32: import java.util.Objects;
33: import java.util.Optional;
34: import java.io.IOException;
35: import java.nio.file.Files;
36: import java.nio.file.Path;
37: import it.tidalwave.util.Key;
38: import it.tidalwave.util.PreferencesHandler;
39: import lombok.Getter;
40: import lombok.RequiredArgsConstructor;
41:
42: /***************************************************************************************************************************************************************
43: *
44: * @author Fabrizio Giudici
45: *
46: **************************************************************************************************************************************************************/
47: @RequiredArgsConstructor
48: // PreferencesHandler can be used to programmatically set the log folder, so don't inject logger
49: public class DefaultPreferencesHandler implements PreferencesHandler
50: {
51: @Getter
52: private final Path appFolder;
53:
54: @Getter
55: private final Path logFolder;
56:
57: private final Map<Key<?>, Object> properties = new HashMap<>();
58:
59: public DefaultPreferencesHandler()
60: {
61: try
62: {
63: final var appName = System.getProperty(PROP_APP_NAME);
64: Objects.requireNonNull(appName, "You must call PreferencesHandler.setAppName(\"...\") before getting here");
65:
66: final var osName = System.getProperty("os.name").toLowerCase(Locale.getDefault());
67: var pattern = "";
68:
69:• switch (osName)
70: {
71: case "linux":
72: pattern = "%s/.%s/";
73: break;
74:
75: case "mac os x":
76: pattern = "%s/Library/Application Support/%s/";
77: break;
78:
79: case "windows":
80: pattern = "%s/AppData/Local/%s/";
81: break;
82:
83: default:
84: throw new ExceptionInInitializerError("Unknown o.s.: " + osName);
85: }
86:
87: final var home = System.getProperty("user.home", "/tmp");
88: appFolder = Path.of(String.format(pattern, home, appName)).toAbsolutePath();
89: logFolder = appFolder.resolve("logs").toAbsolutePath();
90: Files.createDirectories(logFolder);
91: // PreferencesHandler can be used to programmatically set the log folder, so don't log yet
92:• if (!Boolean.getBoolean(PROP_SUPPRESS_CONSOLE))
93: {
94: System.out.printf("App folder: %s%n", appFolder);
95: System.out.printf("Logging folder: %s%n", logFolder);
96: }
97: }
98: catch (IOException e)
99: {
100: throw new RuntimeException(e);
101: }
102: }
103:
104: @Override @Nonnull
105: public <T> Optional<T> getProperty (@Nonnull final Key<T> name)
106: {
107: return Optional.ofNullable((T)properties.get(name));
108: }
109:
110: @Override
111: public <T> void setProperty (@Nonnull final Key<T> name, @Nonnull final T value)
112: {
113: properties.put(name, value);
114: // FIXME: should be made persistent (JSON?)
115: }
116:
117: @Override
118: public <T> void setDefaultProperty (@Nonnull final Key<T> name, @Nonnull final T value)
119: {
120: if (!properties.containsKey(name))
121: {
122: setProperty(name, value);
123: }
124: }
125: }