import { env } from "bun";
import homepage from './index.html';
import robotsTxt from './static/robots.txt';
import sitemapTxt from './static/sitemap.txt';
// @ts-ignore ts2307
import icon from './static/favicon.png' with { type: 'file' };
import { entry } from "./db/schema";
import { desc, eq } from "drizzle-orm";
const favicon = await Bun.file(icon).bytes();

const development = env.NODE_ENV !== 'production';

Bun.serve({
	routes: {
		'/': homepage,
		'/robots.txt': new Response(robotsTxt, {
			headers: { 'Content-Type': 'text/plain' },
		}),
		'/sitemap.txt': new Response(sitemapTxt, {
			headers: { 'Content-Type': 'text/plain' },
		}),
		'/favicon.ico': new Response(favicon, {
			headers: { 'Content-Type': 'image/png' },
		}),
		'/health': new Response('OK'),
		'/api/entries': {
			async GET(req) {
				if (!isAuthenticated(req)) return unauthorizedResp();

				const entries = await drizzleDB.select().from(entry).orderBy(desc(entry.updatedAt));

				return new Response(JSON.stringify(entries), {
					headers: { 'Content-Type': 'application/json' }
				});
			},
			async POST(req) {
				if (!isAuthenticated(req)) return unauthorizedResp();

				const body = await getEntryFromReq(req);
				if (!body) return new Response('Invalid data', { status: 400 });

				const result = await drizzleDB.select({ id: entry.id }).from(entry).where(eq(entry.name, body.name));

				let created = true;

				if (result.length === 0) {
					await drizzleDB.insert(entry).values(body).execute();
				} else if (result.length === 1) {
					const row = result[0];
					created = false;
					await drizzleDB.update(entry).set(body).where(eq(entry.id, row.id)).execute();
				} else {
					return new Response('Invalid data, multiple matches?', { status: 400 });
				}

				return new Response(JSON.stringify({ created }), {
					headers: { 'Content-Type': 'application/json' }
				});
			},
		},
		'/api/entries/:id': {
			async GET(req) {
				if (!isAuthenticated(req)) return unauthorizedResp();

				const id = Number.parseInt(req.params.id, 10);
				if (Number.isNaN(id)) return new Response('Invalid id', { status: 400 });

				const result = await drizzleDB.select().from(entry).where(eq(entry.id, id));

				return new Response(JSON.stringify(result), {
					headers: { 'Content-Type': 'application/json' }
				});
			},
			async PUT(req) {
				if (!isAuthenticated(req)) return unauthorizedResp();

				const id = Number.parseInt(req.params.id, 10);
				if (Number.isNaN(id)) return new Response('Invalid id', { status: 400 });

				const body = await getEntryFromReq(req);
				if (!body) return new Response('Invalid data', { status: 400 });

				await drizzleDB.update(entry).set(body).where(eq(entry.id, id)).execute();

				let created = false;
				return new Response(JSON.stringify({ created: false }), {
					headers: { 'Content-Type': 'application/json' }
				});
			},
			async DELETE(req) {
				if (!isAuthenticated(req)) return unauthorizedResp();

				const id = Number.parseInt(req.params.id, 10);
				if (Number.isNaN(id)) return new Response('Invalid id', { status: 400 });

				await drizzleDB.delete(entry).where(eq(entry.id, id)).execute();

				return new Response('OK');
			},
		},
		'/api/entries/:id/check/:finished': {
			async PUT(req) {
				if (!isAuthenticated(req)) return unauthorizedResp();

				const id = Number.parseInt(req.params.id, 10);
				if (Number.isNaN(id)) return new Response('Invalid id', { status: 400 });
				const finished = req.params.finished === 'true';

				await drizzleDB
					.update(entry)
					.set({ finished: finished })
					.where(eq(entry.id, id))
					.execute();

				return new Response('OK');
			},
		},
	},
	development,
	reusePort: true,
	port: env.PORT || 3000,
	// async fetch(req, server) {
	//   return new Response("Not found", { status: 404 });
	// },
});

async function getEntryFromReq(req: Request) {
	const json = await req.json();
	const body = json as { name: string, href: string }
	if (!body.name || !body.href || typeof body.name !== 'string' || typeof body.href !== 'string') {
		return null;
	}

	// Trim and lowercase the name to ensure consistency and uniqueness
	body.name = body.name.trim().toLocaleLowerCase();

	return body;
}

function isAuthenticated(req: Request) {
	const bearer = req.headers.get('bearer');
	if (!bearer) return false;

	return bearer === env.BEARER_TOKEN;
}

const unauthorizedHeaders = new Headers({
	'WWW-Authenticate': `Bearer realm='sign', error="invalid_request"`
});

function unauthorizedResp() {
	return new Response('Unauthorized', { status: 401, headers: unauthorizedHeaders });
}