content: /*
   * Copyright 2021-2024 Aklivity Inc
   *
   * Licensed under the Aklivity Community License (the "License"); you may not use
   * this file except in compliance with the License.  You may obtain a copy of the
   * License at
   *
   *   https://www.aklivity.io/aklivity-community-license/
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OF ANY KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations under the License.
   */
  package io.aklivity.zilla.runtime.exporter.otlp.internal.config;
  
  import static io.aklivity.zilla.runtime.engine.config.OptionsConfigAdapterSpi.Kind.EXPORTER;
  import static java.util.stream.Collectors.toList;
  
  import java.time.Duration;
  import java.util.List;
  
  import jakarta.json.Json;
  import jakarta.json.JsonArray;
  import jakarta.json.JsonObject;
  import jakarta.json.JsonObjectBuilder;
  import jakarta.json.JsonString;
  import jakarta.json.JsonValue;
  import jakarta.json.bind.adapter.JsonbAdapter;
  
  import io.aklivity.zilla.runtime.engine.config.OptionsConfig;
  import io.aklivity.zilla.runtime.engine.config.OptionsConfigAdapterSpi;
  import io.aklivity.zilla.runtime.exporter.otlp.config.OtlpOptionsConfig;
  import io.aklivity.zilla.runtime.exporter.otlp.config.OtlpOptionsConfigBuilder;
  import io.aklivity.zilla.runtime.exporter.otlp.internal.OtlpExporter;
  
  public class OtlpOptionsConfigAdapter implements OptionsConfigAdapterSpi, JsonbAdapter<OptionsConfig, JsonObject>
  {
      private static final String INTERVAL_NAME = "interval";
      private static final String SIGNALS_NAME = "signals";
      private static final String ENDPOINT_NAME = "endpoint";
      private static final String KEYS_NAME = "keys";
      private static final String TRUST_NAME = "trust";
      private static final String TRUSTCACERTS_NAME = "trustcacerts";
      private static final String AUTHORIZATION_NAME = "authorization";
      private static final String AUTHORIZATION_CREDENTIALS_NAME = "credentials";
      private static final String AUTHORIZATION_CREDENTIALS_HEADERS_NAME = "headers";
      private static final String TLS_NAME = "tls";
  
      private final OtlpSignalsAdapter signals;
      private final OtlpEndpointAdapter endpoint;
  
      public OtlpOptionsConfigAdapter()
      {
          this.signals = new OtlpSignalsAdapter();
          this.endpoint = new OtlpEndpointAdapter();
      }
  
      @Override
      public Kind kind()
      {
          return EXPORTER;
      }
  
      @Override
      public String type()
      {
          return OtlpExporter.NAME;
      }
  
      @Override
      public JsonObject adaptToJson(
          OptionsConfig options)
      {
          OtlpOptionsConfig otlpOptionsConfig = (OtlpOptionsConfig) options;
          JsonObjectBuilder object = Json.createObjectBuilder();
          if (otlpOptionsConfig.interval != null)
          {
              object.add(INTERVAL_NAME, otlpOptionsConfig.interval.toSeconds());
          }
          if (otlpOptionsConfig.signals != null)
          {
              object.add(SIGNALS_NAME, signals.adaptToJson(otlpOptionsConfig.signals));
          }
          if (otlpOptionsConfig.endpoint != null)
          {
              object.add(ENDPOINT_NAME, endpoint.adaptToJson(otlpOptionsConfig.endpoint));
          }
          return object.build();
      }
  
      @Override
      public OptionsConfig adaptFromJson(
          JsonObject object)
      {
          OtlpOptionsConfigBuilder<OtlpOptionsConfig> builder = OtlpOptionsConfig.builder();
  
          if (object.containsKey(INTERVAL_NAME))
          {
              builder.interval(Duration.ofSeconds(object.getInt(INTERVAL_NAME)));
          }
  
          if (object.containsKey(SIGNALS_NAME))
          {
              builder.signals(signals.adaptFromJson(object.getJsonArray(SIGNALS_NAME)));
          }
  
          if (object.containsKey(ENDPOINT_NAME))
          {
              builder.endpoint(endpoint.adaptFromJson(object.getJsonObject(ENDPOINT_NAME)));
          }
  
          if (object.containsKey(TLS_NAME))
          {
              JsonObject tls = object.getJsonObject(TLS_NAME);
  
              if (tls.containsKey(KEYS_NAME))
              {
                  builder.keys(asListString(tls.getJsonArray(KEYS_NAME)));
              }
  
              if (tls.containsKey(TRUST_NAME))
              {
                  builder.trust(asListString(tls.getJsonArray(TRUST_NAME)));
              }
  
              if (tls.containsKey(TRUSTCACERTS_NAME))
              {
                  builder.trustcacerts(tls.getBoolean(TRUSTCACERTS_NAME));
              }
          }
  
          if (object.containsKey(AUTHORIZATION_CREDENTIALS_NAME))
          {
              JsonObject credentials = object.getJsonObject(AUTHORIZATION_CREDENTIALS_NAME);
  
              JsonObject headers = credentials.getJsonObject(AUTHORIZATION_CREDENTIALS_HEADERS_NAME);
  
              builder.authorization(headers.getString(AUTHORIZATION_NAME));
          }
  
          return builder.build();
      }
  
      private static List<String> asListString(
          JsonArray array)
      {
          return array.stream()
              .map(OtlpOptionsConfigAdapter::asString)
              .collect(toList());
      }
  
      private static String asString(
          JsonValue value)
      {
          switch (value.getValueType())
          {
          case STRING:
              return ((JsonString) value).getString();
          case NULL:
              return null;
          default:
              throw new IllegalArgumentException("Unexpected type: " + value.getValueType());
          }
      }
  }
  