nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/storage/stickers/StickerStore.java

   1 package org.asamk.signal.storage.stickers;
   2
   3 import com.fasterxml.jackson.core.JsonGenerator;
   4 import com.fasterxml.jackson.core.JsonParser;
   5 import com.fasterxml.jackson.databind.DeserializationContext;
   6 import com.fasterxml.jackson.databind.JsonDeserializer;
   7 import com.fasterxml.jackson.databind.JsonNode;
   8 import com.fasterxml.jackson.databind.JsonSerializer;
   9 import com.fasterxml.jackson.databind.ObjectMapper;
  10 import com.fasterxml.jackson.databind.SerializerProvider;
  11 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  12 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
  13
  14 import org.whispersystems.util.Base64;
  15
  16 import java.io.IOException;
  17 import java.util.Collection;
  18 import java.util.HashMap;
  19 import java.util.Map;
  20
  21 public class StickerStore {
  22
  23     private static final ObjectMapper jsonProcessor = new ObjectMapper();
  24
  25     @JsonSerialize(using = StickersSerializer.class)
  26     @JsonDeserialize(using = StickersDeserializer.class)
  27     private final Map<byte[], Sticker> stickers = new HashMap<>();
  28
  29     public Sticker getSticker(byte[] packId) {
  30         return stickers.get(packId);
  31     }
  32
  33     public void updateSticker(Sticker sticker) {
  34         stickers.put(sticker.getPackId(), sticker);
  35     }
  36
  37     private static class StickersSerializer extends JsonSerializer<Map<byte[], Sticker>> {
  38
  39         @Override
  40         public void serialize(final Map<byte[], Sticker> value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException {
  41             final Collection<Sticker> stickers = value.values();
  42             jgen.writeStartArray(stickers.size());
  43             for (Sticker sticker : stickers) {
  44                 jgen.writeStartObject();
  45                 jgen.writeStringField("packId", Base64.encodeBytes(sticker.getPackId()));
  46                 jgen.writeStringField("packKey", Base64.encodeBytes(sticker.getPackKey()));
  47                 jgen.writeBooleanField("installed", sticker.isInstalled());
  48                 jgen.writeEndObject();
  49             }
  50             jgen.writeEndArray();
  51         }
  52     }
  53
  54     private static class StickersDeserializer extends JsonDeserializer<Map<byte[], Sticker>> {
  55
  56         @Override
  57         public Map<byte[], Sticker> deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
  58             Map<byte[], Sticker> stickers = new HashMap<>();
  59             JsonNode node = jsonParser.getCodec().readTree(jsonParser);
  60             for (JsonNode n : node) {
  61                 byte[] packId = Base64.decode(n.get("packId").asText());
  62                 byte[] packKey = Base64.decode(n.get("packKey").asText());
  63                 boolean installed = n.get("installed").asBoolean(false);
  64                 stickers.put(packId, new Sticker(packId, packKey, installed));
  65             }
  66
  67             return stickers;
  68         }
  69     }
  70 }