"use server";

import config from "@payload-config";
import { getPayload } from "payload";

export interface NotificationActionResult {
  success: boolean;
  error?: string;
}

export async function markNotificationsRead(ids: number[]): Promise<NotificationActionResult> {
  try {
    const payloadConfig = await config;
    const payload = await getPayload({ config: payloadConfig });
    const { headers } = await import("next/headers");
    const hdrs = await headers();
    const { user } = await payload.auth({ headers: hdrs, canSetHeaders: false });

    if (!user) return { success: false, error: "You must be logged in." };

    const cleanIds = [...new Set(ids.filter((id) => Number.isFinite(id) && id > 0))];
    if (cleanIds.length === 0) return { success: true };

    // Query with access control so users can only touch their own notifications.
    const found = await payload.find({
      collection: "user-notifications",
      where: { id: { in: cleanIds } },
      limit: Math.min(cleanIds.length, 100),
      depth: 0,
    });

    for (const doc of found.docs) {
      if (!doc.read) {
        await payload.update({
          collection: "user-notifications",
          id: doc.id,
          data: { read: true },
          overrideAccess: true,
          depth: 0,
        });
      }
    }

    return { success: true };
  } catch {
    return { success: false, error: "Failed to update notifications." };
  }
}

export async function markAllNotificationsRead(): Promise<NotificationActionResult> {
  try {
    const payloadConfig = await config;
    const payload = await getPayload({ config: payloadConfig });
    const { headers } = await import("next/headers");
    const hdrs = await headers();
    const { user } = await payload.auth({ headers: hdrs, canSetHeaders: false });

    if (!user) return { success: false, error: "You must be logged in." };

    const unread = await payload.find({
      collection: "user-notifications",
      where: { read: { equals: false } },
      limit: 100,
      depth: 0,
    });

    for (const doc of unread.docs) {
      await payload.update({
        collection: "user-notifications",
        id: doc.id,
        data: { read: true },
        overrideAccess: true,
        depth: 0,
      });
    }

    return { success: true };
  } catch {
    return { success: false, error: "Failed to update notifications." };
  }
}