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

   1 package org.asamk.signal.storage.groups;
   2
   3 import com.fasterxml.jackson.annotation.JsonProperty;
   4 import com.fasterxml.jackson.core.JsonGenerator;
   5 import com.fasterxml.jackson.core.JsonParser;
   6 import com.fasterxml.jackson.databind.DeserializationContext;
   7 import com.fasterxml.jackson.databind.JsonDeserializer;
   8 import com.fasterxml.jackson.databind.JsonNode;
   9 import com.fasterxml.jackson.databind.JsonSerializer;
  10 import com.fasterxml.jackson.databind.ObjectMapper;
  11 import com.fasterxml.jackson.databind.SerializerProvider;
  12 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  13 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
  14
  15 import org.whispersystems.util.Base64;
  16
  17 import java.io.IOException;
  18 import java.util.ArrayList;
  19 import java.util.HashMap;
  20 import java.util.List;
  21 import java.util.Map;
  22
  23 public class JsonGroupStore {
  24
  25     private static final ObjectMapper jsonProcessor = new ObjectMapper();
  26
  27     public static List<GroupInfo> groupsWithLegacyAvatarId = new ArrayList<>();
  28
  29     @JsonProperty("groups")
  30     @JsonSerialize(using = JsonGroupStore.MapToListSerializer.class)
  31     @JsonDeserialize(using = JsonGroupStore.GroupsDeserializer.class)
  32     private Map<String, GroupInfo> groups = new HashMap<>();
  33
  34     public void updateGroup(GroupInfo group) {
  35         groups.put(Base64.encodeBytes(group.groupId), group);
  36     }
  37
  38     public GroupInfo getGroup(byte[] groupId) {
  39         return groups.get(Base64.encodeBytes(groupId));
  40     }
  41
  42     public List<GroupInfo> getGroups() {
  43         return new ArrayList<>(groups.values());
  44     }
  45
  46     private static class MapToListSerializer extends JsonSerializer<Map<?, ?>> {
  47
  48         @Override
  49         public void serialize(final Map<?, ?> value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException {
  50             jgen.writeObject(value.values());
  51         }
  52     }
  53
  54     private static class GroupsDeserializer extends JsonDeserializer<Map<String, GroupInfo>> {
  55
  56         @Override
  57         public Map<String, GroupInfo> deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
  58             Map<String, GroupInfo> groups = new HashMap<>();
  59             JsonNode node = jsonParser.getCodec().readTree(jsonParser);
  60             for (JsonNode n : node) {
  61                 GroupInfo g = jsonProcessor.treeToValue(n, GroupInfo.class);
  62                 // Check if a legacy avatarId exists
  63                 if (g.getAvatarId() != 0) {
  64                     groupsWithLegacyAvatarId.add(g);
  65                 }
  66                 groups.put(Base64.encodeBytes(g.groupId), g);
  67             }
  68
  69             return groups;
  70         }
  71     }
  72 }