import { Alert } from "@/components/alert";
import { DynamicTheme } from "@/components/dynamic-theme";
import { PasswordForm } from "@/components/password-form";
import { UserAvatar } from "@/components/user-avatar";
import { getServiceUrlFromHeaders } from "@/lib/service";
import { loadMostRecentSession } from "@/lib/session";
import {
  getBrandingSettings,
  getDefaultOrg,
  getLoginSettings,
} from "@/lib/zitadel";
import { Organization } from "@zitadel/proto/zitadel/org/v2/org_pb";
import { PasskeysType } from "@zitadel/proto/zitadel/settings/v2/login_settings_pb";
import { getLocale, getTranslations } from "next-intl/server";
import { headers } from "next/headers";

export default async function Page(props: {
  searchParams: Promise<Record<string | number | symbol, string | undefined>>;
}) {
  const searchParams = await props.searchParams;
  const locale = getLocale();
  const t = await getTranslations({ locale, namespace: "password" });
  const tError = await getTranslations({ locale, namespace: "error" });

  let { loginName, organization, requestId, alt } = searchParams;

  const _headers = await headers();
  const { serviceUrl, serviceRegion } = getServiceUrlFromHeaders(_headers);

  let defaultOrganization;
  if (!organization) {
    const org: Organization | null = await getDefaultOrg({
      serviceUrl,
      serviceRegion,
    });

    if (org) {
      defaultOrganization = org.id;
    }
  }

  // also allow no session to be found (ignoreUnkownUsername)
  let sessionFactors;
  try {
    sessionFactors = await loadMostRecentSession({
      serviceUrl,
      serviceRegion,
      sessionParams: {
        loginName,
        organization,
      },
    });
  } catch (error) {
    // ignore error to continue to show the password form
    console.warn(error);
  }

  const branding = await getBrandingSettings({
    serviceUrl,
    serviceRegion,
    organization: organization ?? defaultOrganization,
  });
  const loginSettings = await getLoginSettings({
    serviceUrl,
    serviceRegion,
    organization: organization ?? defaultOrganization,
  });

  return (
    <DynamicTheme branding={branding}>
      <div className="flex flex-col items-center space-y-4">
        <h1>
          {sessionFactors?.factors?.user?.displayName ?? t("verify.title")}
        </h1>
        <p className="ztdl-p mb-6 block">{t("verify.description")}</p>

        {/* show error only if usernames should be shown to be unknown */}
        {(!sessionFactors || !loginName) &&
          !loginSettings?.ignoreUnknownUsernames && (
            <div className="py-4">
              <Alert>{tError("unknownContext")}</Alert>
            </div>
          )}

        {sessionFactors && (
          <UserAvatar
            loginName={loginName ?? sessionFactors.factors?.user?.loginName}
            displayName={sessionFactors.factors?.user?.displayName}
            showDropdown
            searchParams={searchParams}
          ></UserAvatar>
        )}

        {loginName && (
          <PasswordForm
            loginName={loginName}
            requestId={requestId}
            organization={organization} // stick to "organization" as we still want to do user discovery based on the searchParams not the default organization, later the organization is determined by the found user
            loginSettings={loginSettings}
            promptPasswordless={
              loginSettings?.passkeysType == PasskeysType.ALLOWED
            }
            isAlternative={alt === "true"}
          />
        )}
      </div>
    </DynamicTheme>
  );
}
