import { api } from "./api";
import { byNewest, filterByCategorySlug, paginate } from "./format";
import type { Blog, Brand, Category, Reportage } from "./types";

export const PAGE_SIZE = 9;

export const ADMIN_URL =
  import.meta.env.VITE_ADMIN_URL ?? "http://novintrades.local:5173";

export async function fetchTopCategories(): Promise<Category[]> {
  const categories = await api<Category[]>("/api/categories");
  return categories
    .filter((category) => category.parentId === null)
    .sort((a, b) => a.name.localeCompare(b.name));
}

export async function fetchApprovedBlogs(): Promise<Blog[]> {
  const blogs = await api<Blog[]>("/api/blogs");
  return blogs
    .filter((blog) => blog.verificationStatus === "APPROVED")
    .sort(byNewest);
}

export async function fetchApprovedReportages(): Promise<Reportage[]> {
  const reportages = await api<Reportage[]>("/api/reportages");
  return reportages
    .filter((item) => item.verificationStatus === "APPROVED")
    .sort(byNewest);
}

export async function fetchApprovedBrands(): Promise<Brand[]> {
  const brands = await api<Brand[]>("/api/brands");
  return brands
    .filter((brand) => brand.verificationStatus === "APPROVED")
    .sort(byNewest);
}

export async function fetchLatestBlogs(limit = 3): Promise<Blog[]> {
  const blogs = await fetchApprovedBlogs();
  return blogs.slice(0, limit);
}

export async function fetchLatestBrands(limit = 4): Promise<Brand[]> {
  const brands = await fetchApprovedBrands();
  return brands.slice(0, limit);
}

export async function fetchBlogBySlug(slug: string): Promise<Blog | null> {
  const blogs = await fetchApprovedBlogs();
  return blogs.find((blog) => blog.slug === slug) ?? null;
}

export async function fetchReportageBySlug(
  slug: string,
): Promise<Reportage | null> {
  const reportages = await fetchApprovedReportages();
  return reportages.find((item) => item.slug === slug) ?? null;
}

export async function fetchBrandBySlug(slug: string): Promise<Brand | null> {
  const brands = await fetchApprovedBrands();
  return brands.find((brand) => brand.slug === slug) ?? null;
}

export function listPage<T extends { categories: Array<{ category: { slug: string } }> }>(
  items: T[],
  categorySlug: string | null,
  page: number,
  pageSize = PAGE_SIZE,
) {
  return paginate(filterByCategorySlug(items, categorySlug), page, pageSize);
}