reactive-mail-server/backend/src/main/java/com/mailserver/config/JambotronSso.java

package com.mailserver.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

/**
 * «Sign in with Jambotron»: JAMBOTRON_URL (https://jambotron.com) + SERVICE_TOKEN (the same token Jambotron uses for
 * the service API — here it proves to Jambotron that the code is exchanged by this mail server). Both set — people log
 * in through Jambotron, web password login only for the built-in administrator.
 */
@Component
public class JambotronSso {

    private final String url;
    private final String token;
    private final String publicUrl;

    public JambotronSso(@Value("${mailserver.jambotron.url:}") String url,
                        @Value("${mailserver.service-token:}") String token,
                        @Value("${mailserver.public-url:}") String publicUrl,
                        @Value("${mailserver.smtp.hostname:localhost}") String hostname) {
        this.url = url.isBlank() ? null : url.trim().replaceAll("/+$", "");
        this.token = token.isBlank() ? null : token.trim();
        this.publicUrl = publicUrl.isBlank() ? "https://" + hostname : publicUrl.trim().replaceAll("/+$", "");
    }

    public boolean enabled() {
        return url != null && token != null;
    }

    public String url() {
        return url;
    }

    public String token() {
        return token;
    }

    /** Where Jambotron sends the browser back: https://mail.jambocheck.com/api/oauth/callback */
    public String callback() {
        return publicUrl + "/api/oauth/callback";
    }
}