"use server";

import { revalidatePath } from "next/cache";
import { redirect } from "next/navigation";
import { isRedirectError } from "next/dist/client/components/redirect";

import { clearAdminSessionCookie, isAdminAuthenticated } from "@/lib/admin-auth";
import { updateMarqueeSettings } from "@/lib/app-config";
import { routing } from "@/i18n/routing";
import { getLocalizedPath } from "@/lib/locale";

function ensureAdmin() {
  if (!isAdminAuthenticated()) {
    clearAdminSessionCookie();
    redirect("/root");
  }
}

function withMessage(pathname: string, type: "success" | "error", message: string) {
  const params = new URLSearchParams();
  params.set(type, message);

  return `${pathname}?${params.toString()}`;
}

async function revalidateMarqueePages() {
  revalidatePath("/root");
  revalidatePath("/root/marquee");

  for (const locale of routing.locales) {
    revalidatePath(getLocalizedPath(locale), "layout");
    revalidatePath(getLocalizedPath(locale));
  }
}

export async function saveMarqueeSettingsAction(formData: FormData) {
  ensureAdmin();

  try {
    const settings = {
      locales: {
        ar: {
          row1: String(formData.get("row1-ar") ?? "").trim(),
          row2: String(formData.get("row2-ar") ?? "").trim(),
          row3: String(formData.get("row3-ar") ?? "").trim(),
          row4: String(formData.get("row4-ar") ?? "").trim(),
        },
        en: {
          row1: String(formData.get("row1-en") ?? "").trim(),
          row2: String(formData.get("row2-en") ?? "").trim(),
          row3: String(formData.get("row3-en") ?? "").trim(),
          row4: String(formData.get("row4-en") ?? "").trim(),
        },
        de: {
          row1: String(formData.get("row1-de") ?? "").trim(),
          row2: String(formData.get("row2-de") ?? "").trim(),
          row3: String(formData.get("row3-de") ?? "").trim(),
          row4: String(formData.get("row4-de") ?? "").trim(),
        },
      },
    };

    for (const locale of routing.locales) {
      if (!settings.locales[locale].row1) {
        throw new Error(`Row 1 fuer ${locale} ist erforderlich.`);
      }

      if (!settings.locales[locale].row2) {
        throw new Error(`Row 2 fuer ${locale} ist erforderlich.`);
      }

      if (!settings.locales[locale].row3) {
        throw new Error(`Row 3 fuer ${locale} ist erforderlich.`);
      }

      if (!settings.locales[locale].row4) {
        throw new Error(`Row 4 fuer ${locale} ist erforderlich.`);
      }
    }

    await updateMarqueeSettings(settings);
    await revalidateMarqueePages();

    redirect(withMessage("/root/marquee", "success", "Marquee gespeichert."));
  } catch (error) {
    if (isRedirectError(error)) {
      throw error;
    }

    const message = error instanceof Error ? error.message : "Marquee konnte nicht gespeichert werden.";
    redirect(withMessage("/root/marquee", "error", message));
  }
}