Craig Raw
5 years ago
12 changed files with 194 additions and 53 deletions
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package com.sparrowwallet.sparrow.io; |
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import com.google.gson.*; |
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import com.sparrowwallet.drongo.Utils; |
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import java.io.*; |
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import java.lang.reflect.Type; |
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public class Config { |
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public static final String CONFIG_FILENAME = ".config"; |
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private Integer keyDerivationPeriod; |
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private File hwi; |
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private static Config INSTANCE; |
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private static Gson getGson() { |
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GsonBuilder gsonBuilder = new GsonBuilder(); |
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gsonBuilder.registerTypeAdapter(File.class, new FileSerializer()); |
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gsonBuilder.registerTypeAdapter(File.class, new FileDeserializer()); |
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return gsonBuilder.setPrettyPrinting().disableHtmlEscaping().create(); |
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} |
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private static File getConfigFile() { |
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return new File(Storage.getSparrowDir(), CONFIG_FILENAME); |
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} |
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private static Config load() { |
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File configFile = getConfigFile(); |
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if(configFile.exists()) { |
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try { |
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Reader reader = new FileReader(configFile); |
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Config config = getGson().fromJson(reader, Config.class); |
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reader.close(); |
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if(config != null) { |
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return config; |
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} |
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} catch (IOException e) { |
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e.printStackTrace(); |
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//Ignore and assume no config
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} |
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} |
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return new Config(); |
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} |
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public static synchronized Config get() { |
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if(INSTANCE == null) { |
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INSTANCE = load(); |
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} |
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return INSTANCE; |
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} |
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public Integer getKeyDerivationPeriod() { |
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return keyDerivationPeriod; |
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} |
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public void setKeyDerivationPeriod(Integer keyDerivationPeriod) { |
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this.keyDerivationPeriod = keyDerivationPeriod; |
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flush(); |
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} |
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public File getHwi() { |
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return hwi; |
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} |
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public void setHwi(File hwi) { |
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this.hwi = hwi; |
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flush(); |
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} |
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private void flush() { |
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Gson gson = getGson(); |
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try { |
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File configFile = getConfigFile(); |
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Writer writer = new FileWriter(configFile); |
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gson.toJson(this, writer); |
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writer.close(); |
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} catch (IOException e) { |
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//Ignore
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} |
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} |
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private static class FileSerializer implements JsonSerializer<File> { |
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@Override |
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public JsonElement serialize(File src, Type typeOfSrc, JsonSerializationContext context) { |
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return new JsonPrimitive(src.getAbsolutePath()); |
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} |
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} |
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private static class FileDeserializer implements JsonDeserializer<File> { |
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@Override |
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public File deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { |
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return new File(json.getAsJsonPrimitive().getAsString()); |
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} |
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} |
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} |
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