// portfolio/app/api/sitemap/route.tsx
import { NextResponse } from "next/server";

interface Project {
  slug: string;
}

interface ProjectsData {
  posts: Project[];
}

interface SitemapRoute {
  url: string;
  lastModified: string;
}

const baseUrl = "https://dki.one";

const generateSitemap = async (): Promise<SitemapRoute[]> => {
  try {
    // Static pages
    const staticRoutes: SitemapRoute[] = [
      { url: `${baseUrl}/`, lastModified: new Date().toISOString() },
      {
        url: `${baseUrl}/privacy-policy`,
        lastModified: new Date().toISOString(),
      },
      {
        url: `${baseUrl}/legal-notice`,
        lastModified: new Date().toISOString(),
      },
    ];

    // Check if running in build environment
    if (process.env.IS_BUILD) {
      // Use mock data during build
      const mockProjectsData: ProjectsData = {
        posts: [
          { slug: "project-1" },
          { slug: "project-2" },
          { slug: "project-3" },
        ],
      };
      const projectRoutes: SitemapRoute[] = mockProjectsData.posts.map(
        (project) => ({
          url: `${baseUrl}/projects/${project.slug}`,
          lastModified: new Date().toISOString(),
        }),
      );
      return [...staticRoutes, ...projectRoutes];
    }

    // Fetch project data from your API
    console.log("Fetching project data from API...");
    const response = await fetch(`${baseUrl}/api/fetchAllProjects`);
    if (!response.ok) {
      throw new Error(
        `Failed to fetch projects from Ghost: ${response.statusText}`,
      );
    }
    const projectsData = (await response.json()) as ProjectsData;
    console.log("Fetched project data:", projectsData);

    // Generate dynamic routes for projects
    const projectRoutes: SitemapRoute[] = projectsData.posts.map((project) => ({
      url: `${baseUrl}/projects/${project.slug}`,
      lastModified: new Date().toISOString(),
    }));

    return [...staticRoutes, ...projectRoutes];
  } catch (error) {
    console.error("Error generating sitemap:", error);
    throw error;
  }
};

export async function GET() {
  try {
    const sitemap = await generateSitemap();
    return NextResponse.json(sitemap);
  } catch (error) {
    console.error("Failed to generate sitemap:", error);
    return NextResponse.json(
      { error: "Failed to generate sitemap" },
      { status: 500 },
    );
  }
}