"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";

// CRUD for help-center FAQ entries (website_help_center_categories). Each entry
// is a titled content block with an optional image and call-to-action button.

function parsePosition(value: FormDataEntryValue | null): number {
  const n = Number(value);
  return Number.isFinite(n) && n > 0 ? Math.floor(n) : 1;
}

export async function createHelpQuestion(formData: FormData): Promise<void> {
  const staff = await requireStaff();
  const name = String(formData.get("name") ?? "")
    .trim()
    .slice(0, 255);
  const content = String(formData.get("content") ?? "").trim();
  if (!name || !content) return;

  const imageUrl = String(formData.get("imageUrl") ?? "")
    .trim()
    .slice(0, 255);
  const buttonText = String(formData.get("buttonText") ?? "")
    .trim()
    .slice(0, 255);
  const buttonUrl = String(formData.get("buttonUrl") ?? "")
    .trim()
    .slice(0, 255);
  const buttonColor =
    String(formData.get("buttonColor") ?? "")
      .trim()
      .slice(0, 16) || "#eeb425";
  const buttonBorderColor =
    String(formData.get("buttonBorderColor") ?? "")
      .trim()
      .slice(0, 16) || "#facc15";

  try {
    const entry = await prisma.websiteHelpCenterCategories.create({
      data: {
        name,
        content,
        position: parsePosition(formData.get("position")),
        imageUrl: imageUrl || null,
        buttonText: buttonText || null,
        buttonUrl: buttonUrl || null,
        buttonColor,
        buttonBorderColor,
        smallBox: formData.get("smallBox") != null,
      },
    });
    await logStaffActivity({
      staffId: staff.id,
      action: "help_create",
      description: `Created help-center entry #${entry.id} (${name})`,
      targetType: "help_center_category",
      targetId: Number(entry.id),
    });
  } catch {
    // Unique name collision or DB error — re-render unchanged with error.
    revalidatePath("/admin/help-questions");
    redirect("/admin/help-questions/new?error=Unique name collision or database error. Please try again.");
  }
  revalidatePath("/admin/help-questions");
  redirect("/admin/help-questions");
}

export async function updateHelpQuestion(formData: FormData): Promise<void> {
  const staff = await requireStaff();
  const id = formPositiveBigInt(formData, "id");
  if (!id) return;

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

  const imageUrl = String(formData.get("imageUrl") ?? "")
    .trim()
    .slice(0, 255);
  const buttonText = String(formData.get("buttonText") ?? "")
    .trim()
    .slice(0, 255);
  const buttonUrl = String(formData.get("buttonUrl") ?? "")
    .trim()
    .slice(0, 255);
  const buttonColor =
    String(formData.get("buttonColor") ?? "")
      .trim()
      .slice(0, 16) || "#eeb425";
  const buttonBorderColor =
    String(formData.get("buttonBorderColor") ?? "")
      .trim()
      .slice(0, 16) || "#facc15";

  try {
    await prisma.websiteHelpCenterCategories.update({
      where: { id },
      data: {
        name,
        content,
        position: parsePosition(formData.get("position")),
        imageUrl: imageUrl || null,
        buttonText: buttonText || null,
        buttonUrl: buttonUrl || null,
        buttonColor,
        buttonBorderColor,
        smallBox: formData.get("smallBox") != null,
      },
    });
    await logStaffActivity({
      staffId: staff.id,
      action: "help_update",
      description: `Updated help-center entry #${id} (${name})`,
      targetType: "help_center_category",
      targetId: Number(id),
    });
  } catch {
    // Not found, unique collision, or DB error — ignore.
    revalidatePath(`/admin/help-questions/${id}`);
    return;
  }
  redirect("/admin/help-questions");
}

export async function deleteHelpQuestion(formData: FormData): Promise<void> {
  const staff = await requireStaff();
  const id = formPositiveBigInt(formData, "id");
  if (!id) return;

  try {
    await prisma.websiteHelpCenterCategories.delete({ where: { id } });
    await logStaffActivity({
      staffId: staff.id,
      action: "help_delete",
      description: `Deleted help-center entry #${id}`,
      targetType: "help_center_category",
      targetId: Number(id),
    });
  } catch {
    // Not found or DB error — ignore.
  }
  redirect("/admin/help-questions");
}