dk.mada.jaxrs.openapi.InfoTransformer Maven / Gradle / Ivy

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package dk.mada.jaxrs.openapi;

import java.util.Optional;

import dk.mada.jaxrs.model.Info;
import dk.mada.jaxrs.model.Info.Contact;
import io.swagger.v3.oas.models.OpenAPI;

/**
 * Transforms OpenApi info to local model objects.
 */
public final class InfoTransformer {
    /** Creates new instance. */
    public InfoTransformer() {
        super();
    }

    /**
     * Transforms OpenApi document info section to model.
     *
     * @param document the OpenApi document
     * @return the extracted info model object
     */
    public Info transform(OpenAPI document) {
        io.swagger.v3.oas.models.info.Info info = document.getInfo();
        if (info == null) {
            info = new io.swagger.v3.oas.models.info.Info();
        }

        String title = orEmpty(info.getTitle());
        String version = orEmpty(info.getVersion());
        String description = info.getDescription();
        String tos = info.getTermsOfService();

        String email = null;
        String name = null;
        String url = null;
        io.swagger.v3.oas.models.info.Contact contact = info.getContact();
        if (contact != null) {
            email = contact.getEmail();
            name = contact.getName();
            url = contact.getUrl();
        }

        return Info.builder()
                .title(title)
                .version(version)
                .description(Optional.ofNullable(description))
                .termsOfService(Optional.ofNullable(tos))
                .contact(Contact.builder()
                        .email(Optional.ofNullable(email))
                        .name(Optional.ofNullable(name))
                        .url(Optional.ofNullable(url))
                        .build())
                .build();
    }

    private String orEmpty(String str) {
        return str == null ? "" : str;
    }
}