import { AccessToken } from "@/types";
import { extractCharacterFromToken } from "@/utils";
import { NextApiRequest, NextApiResponse } from "next";
import crypto from "crypto-js";

const EVE_SSO_TOKEN_URL = "https://login.eveonline.com/v2/oauth/token";
const EVE_SSO_CLIENT_ID = process.env.EVE_SSO_CLIENT_ID ?? "";
const EVE_SSO_SECRET = process.env.EVE_SSO_SECRET ?? "";

const handler = async (req: NextApiRequest, res: NextApiResponse) => {
  if (req.method === "GET") {
    const code = req.query.code as string;
    if (!code || code === undefined) return res.status(404).end();

    const params = new URLSearchParams({
      grant_type: "authorization_code",
      code: code,
    }).toString();

    const headers = {
      "Content-Type": "application/x-www-form-urlencoded",
      Authorization: `Basic ${Buffer.from(
        `${EVE_SSO_CLIENT_ID}:${EVE_SSO_SECRET}`,
      ).toString("base64")}`,
      Host: "login.eveonline.com",
      "User-Agent": "https://github.com/calli-eve/eve-pi",
    };

    const response = await fetch(EVE_SSO_TOKEN_URL, {
      method: "POST",
      body: params,
      headers,
    }).then((res) => res.json());

    const character = extractCharacterFromToken(response);

    console.log("Login", character.name, character.characterId);

    const token: AccessToken = {
      access_token: response.access_token,
      token_type: response.token_type,
      refresh_token: crypto.AES.encrypt(
        response.refresh_token,
        EVE_SSO_SECRET,
      ).toString(),
      expires_at: Date.now() + response.expires_in * 1000,
      character,
      needsLogin: false,
      account: "-",
      comment: "",
      system: "",
      planets: [],
    };
    res.json(token);
  } else {
    res.status(404).end();
  }
};

export default handler;