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

   1 package org.asamk.signal;
   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.*;
   7 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
   8 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
   9
  10 import java.io.IOException;
  11 import java.util.ArrayList;
  12 import java.util.HashMap;
  13 import java.util.List;
  14 import java.util.Map;
  15
  16 public class JsonGroupStore {
  17     @JsonProperty("groups")
  18     @JsonSerialize(using = JsonGroupStore.MapToListSerializer.class)
  19     @JsonDeserialize(using = JsonGroupStore.GroupsDeserializer.class)
  20     private Map<String, GroupInfo> groups = new HashMap<>();
  21
  22     private static final ObjectMapper jsonProcessot = new ObjectMapper();
  23
  24     void updateGroup(GroupInfo group) {
  25         groups.put(Base64.encodeBytes(group.groupId), group);
  26     }
  27
  28     GroupInfo getGroup(byte[] groupId) throws GroupNotFoundException {
  29         GroupInfo g = groups.get(Base64.encodeBytes(groupId));
  30         if (g == null) {
  31             throw new GroupNotFoundException(groupId);
  32         }
  33         return g;
  34     }
  35
  36     List<GroupInfo> getGroups() {
  37         return new ArrayList<>(groups.values());
  38     }
  39
  40     public static class MapToListSerializer extends JsonSerializer<Map<?, ?>> {
  41         @Override
  42         public void serialize(final Map<?, ?> value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException {
  43             jgen.writeObject(value.values());
  44         }
  45     }
  46
  47     public static class GroupsDeserializer extends JsonDeserializer<Map<String, GroupInfo>> {
  48         @Override
  49         public Map<String, GroupInfo> deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
  50             Map<String, GroupInfo> groups = new HashMap<>();
  51             JsonNode node = jsonParser.getCodec().readTree(jsonParser);
  52             for (JsonNode n : node) {
  53                 GroupInfo g = jsonProcessot.treeToValue(n, GroupInfo.class);
  54                 groups.put(Base64.encodeBytes(g.groupId), g);
  55             }
  56
  57             return groups;
  58         }
  59     }
  60 }