package ins.frontend;

import ins.frontend.utils.WebApp;
import org.openautonomousconnection.protocol.packets.v1_0_1.beta.web.impl.resource.WebResourceResponsePacket;
import org.openautonomousconnection.protocol.versions.v1_0_1.beta.WebPacketFlags;
import org.openautonomousconnection.protocol.versions.v1_0_1.beta.WebPacketHeader;
import org.openautonomousconnection.webserver.api.Route;
import org.openautonomousconnection.webserver.api.WebPage;
import org.openautonomousconnection.webserver.api.WebPageContext;
import org.openautonomousconnection.webserver.utils.HeaderMaps;
import org.openautonomousconnection.webserver.utils.Html;

import java.util.Map;

/**
 * Info page for INS registrar frontend (v1.0.1).
 */
@Route(path = "/info.html")
public final class info implements WebPage {

    @Override
    public WebResourceResponsePacket handle(WebPageContext ctx) {
        WebApp.init();

        String html = Html.page("INS Info", """
                <section class="card">
                  <h2>OAC Default INS Server</h2>

                  <p>
                    The <strong>Default INS Server</strong> is the official, project-operated
                    name service of the Open Autonomous Connection (OAC) network.
                  </p>

                  <p>
                    It provides a trusted reference point for resolving InfoNames
                    and enables initial client connections
                    to the OAC ecosystem.
                  </p>

                  <p>
                    This server is maintained by the OAC project and is intended
                    as the recommended entry point for public services and new clients.
                  </p>

                  <p class="muted">
                    Note: Alternative or private INS servers may exist, but the default INS
                    server represents the official and stable reference instance.
                  </p>
                </section>
                """);

        byte[] body = Html.utf8(html);
        Map<String, String> headers = HeaderMaps.mutable();
        headers.put("content-length", String.valueOf(body.length));

        return new WebResourceResponsePacket(outHeader(ctx), 200, "text/html; charset=utf-8", headers, body, null);
    }

    private WebPacketHeader outHeader(WebPageContext ctx) {
        WebPacketHeader in = (ctx != null && ctx.request != null) ? ctx.request.getHeader() : null;
        if (in == null) {
            return new WebPacketHeader(0, 0, 0, 0, WebPacketFlags.RESOURCE, System.currentTimeMillis());
        }
        return new WebPacketHeader(
                in.getRequestId(),
                in.getTabId(),
                in.getPageId(),
                in.getFrameId(),
                in.getFlags() | WebPacketFlags.RESOURCE,
                System.currentTimeMillis()
        );
    }
}