"use server";

import { revalidatePath } from "next/cache";
import { redirect } from "next/navigation";
import { requireStaff } from "@/lib/admin/guard";
import { prisma } from "@/lib/prisma";
import { logStaffActivity } from "@/lib/services/staff-activity";
import { formPositiveBigInt } from "@/lib/form-data";
import { logServerError } from "@/lib/server-log";

// Website store packages (website_shop_articles). This CMS-owned table backs
// the public store; rows here are the buyable packages, not orders. The closest
// "orders" record is website_paypal_transactions, exposed read-only by the page.

/** Parse an UnsignedInt form value, returning null when blank/invalid/negative. */
function optUInt(formData: FormData, key: string): number | null {
  const raw = String(formData.get(key) ?? "")
    .normalize("NFC")
    .trim();
  if (raw === "") return null;
  const n = Number(raw);
  if (!Number.isFinite(n) || n < 0) return null;
  return Math.floor(n);
}

/** Parse a required non-negative UnsignedInt, falling back to 0. */
function reqUInt(formData: FormData, key: string): number {
  const n = optUInt(formData, key);
  return n ?? 0;
}

export async function createShopArticle(formData: FormData): Promise<void> {
  const staff = await requireStaff();

  const name = String(formData.get("name") ?? "")
    .normalize("NFC")
    .trim()
    .slice(0, 255);
  if (!name) return;

  const now = new Date();
  try {
    const created = await prisma.websiteShopArticles.create({
      data: {
        name,
        info: String(formData.get("info") ?? "")
          .normalize("NFC")
          .trim()
          .slice(0, 255),
        iconUrl: String(formData.get("icon") ?? "")
          .normalize("NFC")
          .trim()
          .slice(0, 255),
        color: String(formData.get("color") ?? "")
          .normalize("NFC")
          .trim()
          .slice(0, 255),
        costs: reqUInt(formData, "costs"),
        giveRank: optUInt(formData, "giveRank"),
        credits: optUInt(formData, "credits"),
        duckets: optUInt(formData, "duckets"),
        diamonds: optUInt(formData, "diamonds"),
        badges:
          String(formData.get("badges") ?? "")
            .normalize("NFC")
            .trim()
            .slice(0, 255) || null,
        position: reqUInt(formData, "position"),
        createdAt: now,
        updatedAt: now,
      },
    });
    await logStaffActivity({
      staffId: staff.id,
      action: "shop_create",
      description: `Created shop package "${name}" (${created.costs} costs)`,
      targetType: "shop_article",
      targetId: Number(created.id),
    });
  } catch (error) {
    logServerError("admin.shop_create_failed", error, { staffId: staff.id, name });
    // Unique constraint on `name` (or DB unavailable) — swallow and re-render.
    return;
  }

  redirect("/admin/shop");
}

export async function updateShopArticle(formData: FormData): Promise<void> {
  const staff = await requireStaff();

  const id = formPositiveBigInt(formData, "id");
  if (!id) return;

  const name = String(formData.get("name") ?? "")
    .normalize("NFC")
    .trim()
    .slice(0, 255);
  if (!name) return;

  try {
    await prisma.websiteShopArticles.update({
      where: { id },
      data: {
        name,
        info: String(formData.get("info") ?? "")
          .normalize("NFC")
          .trim()
          .slice(0, 255),
        iconUrl: String(formData.get("icon") ?? "")
          .normalize("NFC")
          .trim()
          .slice(0, 255),
        color: String(formData.get("color") ?? "")
          .normalize("NFC")
          .trim()
          .slice(0, 255),
        costs: reqUInt(formData, "costs"),
        giveRank: optUInt(formData, "giveRank"),
        credits: optUInt(formData, "credits"),
        duckets: optUInt(formData, "duckets"),
        diamonds: optUInt(formData, "diamonds"),
        badges:
          String(formData.get("badges") ?? "")
            .normalize("NFC")
            .trim()
            .slice(0, 255) || null,
        position: reqUInt(formData, "position"),
        updatedAt: new Date(),
      },
    });
    await logStaffActivity({
      staffId: staff.id,
      action: "shop_update",
      description: `Updated shop package #${id} ("${name}")`,
      targetType: "shop_article",
      targetId: Number(id),
    });
  } catch (error) {
    logServerError("admin.shop_update_failed", error, {
      staffId: staff.id,
      articleId: String(id),
    });
    return;
  }

  revalidatePath(`/admin/shop/${id}`);
  redirect("/admin/shop");
}

export async function deleteShopArticle(formData: FormData): Promise<void> {
  const staff = await requireStaff();

  const id = formPositiveBigInt(formData, "id");
  if (!id) return;

  try {
    await prisma.websiteShopArticles.delete({ where: { id } });
    await logStaffActivity({
      staffId: staff.id,
      action: "shop_delete",
      description: `Deleted shop package #${id}`,
      targetType: "shop_article",
      targetId: Number(id),
    });
  } catch (error) {
    logServerError("admin.shop_delete_failed", error, {
      staffId: staff.id,
      articleId: String(id),
    });
    return;
  }

  redirect("/admin/shop");
}