content: package dev.ai4j.openai4j.chat;
  
  import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
  import com.fasterxml.jackson.annotation.JsonInclude;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.fasterxml.jackson.databind.PropertyNamingStrategies;
  import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
  import com.fasterxml.jackson.databind.annotation.JsonNaming;
  import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
  
  import java.util.Objects;
  
  import static dev.ai4j.openai4j.chat.Role.SYSTEM;
  
  @JsonDeserialize(builder = SystemMessage.Builder.class)
  @JsonInclude(JsonInclude.Include.NON_NULL)
  @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
  public final class SystemMessage implements Message {
  
      @JsonProperty
      private final Role role = SYSTEM;
      @JsonProperty
      private final String content;
      @JsonProperty
      private final String name;
  
      private SystemMessage(Builder builder) {
          this.content = builder.content;
          this.name = builder.name;
      }
  
      public Role role() {
          return role;
      }
  
      public String content() {
          return content;
      }
  
      public String name() {
          return name;
      }
  
      @Override
      public boolean equals(Object another) {
          if (this == another) return true;
          return another instanceof SystemMessage
                  && equalTo((SystemMessage) another);
      }
  
      private boolean equalTo(SystemMessage another) {
          return Objects.equals(role, another.role)
                  && Objects.equals(content, another.content)
                  && Objects.equals(name, another.name);
      }
  
      @Override
      public int hashCode() {
          int h = 5381;
          h += (h << 5) + Objects.hashCode(role);
          h += (h << 5) + Objects.hashCode(content);
          h += (h << 5) + Objects.hashCode(name);
          return h;
      }
  
      @Override
      public String toString() {
          return "SystemMessage{"
                  + "role=" + role
                  + ", content=" + content
                  + ", name=" + name
                  + "}";
      }
  
      public static SystemMessage from(String content) {
          return SystemMessage.builder()
                  .content(content)
                  .build();
      }
  
      public static Builder builder() {
          return new Builder();
      }
  
      @JsonPOJOBuilder(withPrefix = "")
      @JsonIgnoreProperties(ignoreUnknown = true)
      @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
      public static final class Builder {
  
          private String content;
          private String name;
  
          private Builder() {
          }
  
          public Builder content(String content) {
              this.content = content;
              return this;
          }
  
          public Builder name(String name) {
              this.name = name;
              return this;
          }
  
          public SystemMessage build() {
              return new SystemMessage(this);
          }
      }
  }
  