76 lines
2.0 KiB
TypeScript
76 lines
2.0 KiB
TypeScript
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import { Handlers } from "$fresh/server.ts";
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import { create, getNumericDate } from "https://deno.land/x/djwt@v2.2/mod.ts";
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import { oauth2Client } from "@lib/auth.ts";
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import {
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getCookies,
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setCookie,
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} from "https://deno.land/std@0.197.0/http/cookie.ts";
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import { codeChallengeMap } from "./login.ts";
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import { GITEA_SERVER, JWT_SECRET, SESSION_DURATION } from "@lib/env.ts";
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import { userDB } from "@lib/db.ts";
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import { GiteaOauthUser } from "@lib/types.ts";
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import { BadRequestError } from "@lib/errors.ts";
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export const handler: Handlers = {
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async GET(request, ctx) {
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if (!JWT_SECRET) {
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throw new BadRequestError();
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}
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// Exchange the authorization code for an access token
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const cookies = getCookies(request.headers);
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const codeVerifier = codeChallengeMap.get(cookies["code_challenge"]);
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const tokens = await oauth2Client.code.getToken(request.url, {
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codeVerifier,
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});
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// Use the access token to make an authenticated API request
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const userInfo = `${GITEA_SERVER}/login/oauth/userinfo`;
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const userResponse = await fetch(userInfo, {
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headers: {
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Authorization: `token ${tokens.accessToken}`,
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},
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});
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const oauthUser = await userResponse.json() as GiteaOauthUser;
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const allUsers = await userDB.findAll();
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let user = allUsers.find((u) => u.name === oauthUser.name);
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if (!user) {
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user = await userDB.create({
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createdAt: new Date(),
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email: oauthUser.email,
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name: oauthUser.name,
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});
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}
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const jwt = await create({ alg: "HS512", type: "JWT" }, {
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id: user.id,
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name: user.name,
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exp: getNumericDate(SESSION_DURATION),
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}, JWT_SECRET);
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const headers = new Headers({
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location: "/",
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});
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setCookie(headers, {
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name: "session_cookie",
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value: jwt,
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path: "/",
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maxAge: SESSION_DURATION,
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httpOnly: false,
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secure: true,
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sameSite: "Lax",
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});
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return new Response(null, {
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headers,
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status: 302,
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});
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},
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};
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