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.ArrayList;
  import java.util.List;
  import java.util.Objects;
  
  import static dev.ai4j.openai4j.chat.ContentType.IMAGE_URL;
  import static dev.ai4j.openai4j.chat.ContentType.TEXT;
  import static dev.ai4j.openai4j.chat.Role.USER;
  import static java.util.Collections.unmodifiableList;
  
  @JsonDeserialize(builder = UserMessage.Builder.class)
  @JsonInclude(JsonInclude.Include.NON_NULL)
  @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
  public final class UserMessage implements Message {
  
      @JsonProperty
      private final Role role = USER;
      @JsonProperty
      private final Object content;
      @JsonProperty
      private final String name;
  
      private UserMessage(Builder builder) {
          this.content = builder.stringContent != null ? builder.stringContent : builder.content;
          this.name = builder.name;
      }
  
      public Role role() {
          return role;
      }
  
      public Object content() {
          return content;
      }
  
      public String name() {
          return name;
      }
  
      @Override
      public boolean equals(Object another) {
          if (this == another) return true;
          return another instanceof UserMessage
                  && equalTo((UserMessage) another);
      }
  
      private boolean equalTo(UserMessage 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 "UserMessage{"
                  + "role=" + role
                  + ", content=" + content
                  + ", name=" + name
                  + "}";
      }
  
      public static UserMessage from(String text) {
          return UserMessage.builder()
                  .content(text)
                  .build();
      }
  
      public static UserMessage from(String text, String... imageUrls) {
          return UserMessage.builder()
                  .addText(text)
                  .addImageUrls(imageUrls)
                  .build();
      }
  
      public static Builder builder() {
          return new Builder();
      }
  
      @JsonPOJOBuilder(withPrefix = "")
      @JsonIgnoreProperties(ignoreUnknown = true)
      @JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy.class)
      public static final class Builder {
  
          private String stringContent; // keeping it for compatibility with other OpenAI-like APIs
          private List<Content> content;
          private String name;
  
          private Builder() {
          }
  
          public Builder addText(String text) {
              initializeContent();
              Content content = Content.builder()
                      .type(TEXT)
                      .text(text)
                      .build();
              this.content.add(content);
              return this;
          }
  
          public Builder addImageUrl(String imageUrl) {
              return addImageUrl(imageUrl, null);
          }
  
          public Builder addImageUrl(String imageUrl, ImageDetail imageDetail) {
              initializeContent();
              Content content = Content.builder()
                      .type(IMAGE_URL)
                      .imageUrl(ImageUrl.builder()
                              .url(imageUrl)
                              .detail(imageDetail)
                              .build())
                      .build();
              this.content.add(content);
              return this;
          }
  
          public Builder addImageUrls(String... imageUrls) {
              for (String imageUrl : imageUrls) {
                  addImageUrl(imageUrl);
              }
              return this;
          }
          
          public Builder addInputAudio(InputAudio inputAudio) {
              initializeContent();
              this.content.add(
                  Content.builder()
                      .type(ContentType.AUDIO)
                      .inputAudio(inputAudio)
                  .build()
              );
              
              return this;
          }
  
          public Builder content(List<Content> content) {
              if (content != null) {
                  this.content = unmodifiableList(content);
              }
              return this;
          }
  
          public Builder content(String content) {
              this.stringContent = content;
              return this;
          }
  
          public Builder name(String name) {
              this.name = name;
              return this;
          }
  
          public UserMessage build() {
              return new UserMessage(this);
          }
  
          private void initializeContent() {
              if (this.content == null) {
                  this.content = new ArrayList<>();
              }
          }
      }
  }
  