import React from "react";
// Database connection is now handled by the centralized db module
import { renderToString } from "react-dom/server";
import { AppShell } from "./src/frontend/AppShell";
import { Home } from "./src/frontend/pages/home";
import { NotFound } from "./src/frontend/pages/not-found";
import demo from "./temp/appshell.html";
import { Post } from "./src/frontend/pages/post";
import { getPostWithTags } from "./src/db/index";

async function blogPosts(hmr: boolean) {
  const glob = new Bun.Glob("**/*.md");
  const blogPosts: Record<string, any> = {};
  for await (const file of glob.scan("./content")) {
    const post = await import(`./content/${file}`, { with: { type: "html" } });
    const route = `/${file.replace(/\.md$/, "")}`;

    if (hmr) {
      // Use Bun Importer plugin for hot reloading in the browser
      blogPosts[`/hmr${route}`] = post.default;
    } else {
      // Use the Database for sending just the HTML or the HTML and AppShell
      blogPosts[route] = (req: Request) => {
        const path = new URL(req.url).pathname;
        const post = getPostWithTags(path);
        if (!post)
          return new Response(renderToString(<NotFound />), {
            status: 404,
            headers: { "Content-Type": "text/html" },
          });

        const data = {
          title: post.title,
          summary: post.summary,
          date: new Date(post.date),
          readingTime: post.reading_time,
          tags: post.tags || [],
        };

        // AppShell is already loaded, just send the <main> content
        if (req.headers.get("shell-loaded") === "true") {
          return new Response(
            renderToString(<Post meta={data} children={post.content} />),
            {
              headers: {
                "Content-Type": "text/html",
              },
            },
          );
        }

        // AppShell is not loaded, send the <AppShell> with the <main> content inside
        return new Response(
          renderToString(
            <AppShell>
              <Post meta={data} children={post.content} />
            </AppShell>,
          ),
          {
            headers: {
              "Content-Type": "text/html",
            },
          },
        );
      };
    }
  }

  Object.keys(blogPosts).map((route) => {
    console.info(route);
  });
  return blogPosts;
}

Bun.serve({
  development: {
    hmr: true,
    console: true,
  },

  routes: {
    // standard mounting of blog posts
    ...(await blogPosts(false)),

    // hot module replacement in development mode
    ...(process.env.NODE_ENV === "development" ? (await blogPosts(true)) : []),

    // Home page
    "/": (req: Request) => {
      // Extract URL parameters from the request to pass to the component
      const url = new URL(req.url);
      const searchParams = Object.fromEntries(url.searchParams.entries());

      if (req.headers.get("shell-loaded") === "true") {
        return new Response(renderToString(<Home searchParams={searchParams} />), {
          headers: {
            "Content-Type": "text/html",
          },
        });
      }

      return new Response(
        renderToString(
          <AppShell>
            <Home searchParams={searchParams} />
          </AppShell>,
        ),
        {
          headers: {
            "Content-Type": "text/html",
          },
        },
      );
    },
    "/target": demo,
    "/profile-picture.webp": () => {
      return new Response(Bun.file("./src/public/profile-picture.webp"), {
        headers: {
          "Content-Type": "image/webp",
        },
      });
    },
    "/*": (req) => {
      if(req.headers.get("shell-loaded") === "true") {
        return new Response(renderToString(<NotFound />), {
          status: 404,
          headers: { "Content-Type": "text/html" },
        });
      }
      return new Response(renderToString(<AppShell><NotFound /></AppShell>), {
        status: 404,
        headers: { "Content-Type": "text/html" },
      });
    }
  },
});