/*
    * Copyright 2018 LINE Corporation
    *
    * LINE Corporation licenses this file to you under the Apache License,
    * version 2.0 (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.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  
  package com.linecorp.centraldogma.client;
  
  import static com.google.common.base.MoreObjects.firstNonNull;
  import static com.google.common.base.Preconditions.checkArgument;
  import static java.util.Objects.requireNonNull;
  
  import java.util.Set;
  
  import javax.annotation.Nullable;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  import com.google.common.collect.ImmutableSet;
  
  import com.linecorp.centraldogma.internal.Jackson;
  
  final class ClientProfile {
  
      private final String name;
      private final int priority;
      private final Set<Entry> hosts;
  
      @JsonCreator
      ClientProfile(@JsonProperty(value = "name", required = true) String name,
                    @JsonProperty("priority") @Nullable Integer priority,
                    @JsonProperty("hosts") @JsonDeserialize(contentAs = Entry.class) @Nullable Set<Entry> hosts) {
          this.name = requireNonNull(name, "name");
          checkArgument(!name.isEmpty(), "name is empty.");
          this.priority = firstNonNull(priority, 0);
          this.hosts = ImmutableSet.copyOf(firstNonNull(hosts, ImmutableSet.of()));
      }
  
      @JsonProperty
      String name() {
          return name;
      }
  
      @JsonProperty
      int priority() {
          return priority;
      }
  
      @JsonProperty
      Set<Entry> hosts() {
          return hosts;
      }
  
      @Override
      public String toString() {
          try {
              return Jackson.writeValueAsPrettyString(this);
          } catch (JsonProcessingException e) {
              // Should never reach here.
              throw new Error(e);
          }
      }
  
      static final class Entry {
          private final String host;
          private final String protocol;
          private final int port;
  
          @JsonCreator
          Entry(@JsonProperty(value = "host", required = true) String host,
                @JsonProperty(value = "protocol", required = true) String protocol,
                @JsonProperty(value = "port", required = true) Integer port) {
              this.host = requireNonNull(host, "host");
              checkArgument(!host.isEmpty(), "hostname is empty.");
              this.protocol = requireNonNull(protocol, "protocol");
              checkArgument(!protocol.isEmpty(), "protocol is empty.");
              this.port = requireNonNull(port, "port");
              checkArgument(port > 0 && port < 65536, "port: %s (expected: 1..65535)", port);
          }
  
          @JsonProperty
          String host() {
              return host;
          }
  
          @JsonProperty
          String protocol() {
             return protocol;
         }
 
         @JsonProperty
         int port() {
             return port;
         }
 
         @Override
         public String toString() {
             try {
                 return Jackson.writeValueAsPrettyString(this);
             } catch (JsonProcessingException e) {
                 // Should never reach here.
                 throw new Error(e);
             }
         }
     }
 }