import Fastify from "fastify";
import { Yapper } from "./Yapper";
import path from "path";
import { readFileSync, writeFileSync } from "fs";

const state = new Proxy(
	JSON.parse(readFileSync(path.join(__dirname, "state.json"), "utf-8")),
	{
		get(target, prop) {
			const data = readFileSync(
				path.join(__dirname, "state.json"),
				"utf-8"
			);
			return JSON.parse(data);
		},
		set(target, prop, value) {
			const data = JSON.parse(
				readFileSync(path.join(__dirname, "state.json"), "utf-8")
			);
			data[prop] = value;
			writeFileSync(
				path.join(__dirname, "state.json"),
				JSON.stringify(data)
			);
			return true;
		}
	}
);

const fastify = Fastify({
	loggerInstance: new Yapper()
});

fastify.get("/", (request, reply) => {
	reply.type("text/html");
	return '<a href="/auth">auth</a>';
});

fastify.get("/auth", async (request, reply) => {
	return reply.redirect(
		`https://accounts.spotify.com/authorize?` +
			new URLSearchParams({
				response_type: "code",
				client_id: process.env.CLIENT_ID!,
				scope: "user-library-read user-library-modify playlist-read-private playlist-read-collaborative playlist-modify-private playlist-modify-public",
				redirect_uri: `https://${request.hostname}/callback`,
				show_dialog: "true",
				state: "ballsgamingmeoww"
			}).toString()
	);
});

fastify.get("/callback", async (request, reply) => {
	if ((request.query as any).error) return reply.code(400).send();

	const tokenRes = await fetch("https://accounts.spotify.com/api/token", {
		method: "POST",
		headers: {
			"Content-Type": "application/x-www-form-urlencoded",
			Authorization:
				"Basic " +
				Buffer.from(
					process.env.CLIENT_ID + ":" + process.env.CLIENT_SECRET
				).toString("base64")
		},
		body: new URLSearchParams({
			code: (request.query as any).code,
			redirect_uri: `https://${request.hostname}/callback`,
			grant_type: "authorization_code"
		})
	});

	console.log(await tokenRes.json());
});

try {
	fastify.listen({
		port: 4929,
		host: "0.0.0.0"
	});
} catch (err) {
	fastify.log.error(err);
	process.exit(1);
}