134 lines
3.8 KiB
TypeScript
134 lines
3.8 KiB
TypeScript
/*
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Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
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Copyright (C) 2023 Spacebar and Spacebar Contributors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {
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ConnectedAccount,
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ConnectedAccountCommonOAuthTokenResponse,
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Connection,
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ConnectionCallbackSchema,
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ConnectionLoader,
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DiscordApiErrors,
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} from "@spacebar/util";
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import wretch from "wretch";
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import { GitHubSettings } from "./GitHubSettings";
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interface UserResponse {
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login: string;
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id: number;
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name: string;
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}
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export default class GitHubConnection extends Connection {
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public readonly id = "github";
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public readonly authorizeUrl = "https://github.com/login/oauth/authorize";
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public readonly tokenUrl = "https://github.com/login/oauth/access_token";
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public readonly userInfoUrl = "https://api.github.com/user";
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public readonly scopes = ["read:user"];
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settings: GitHubSettings = new GitHubSettings();
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init(): void {
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const settings = ConnectionLoader.getConnectionConfig<GitHubSettings>(
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this.id,
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this.settings,
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);
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if (settings.enabled && (!settings.clientId || !settings.clientSecret))
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throw new Error(`Invalid settings for connection ${this.id}`);
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}
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getAuthorizationUrl(userId: string): string {
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const state = this.createState(userId);
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const url = new URL(this.authorizeUrl);
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url.searchParams.append("client_id", this.settings.clientId as string);
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url.searchParams.append("redirect_uri", this.getRedirectUri());
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url.searchParams.append("scope", this.scopes.join(" "));
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url.searchParams.append("state", state);
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return url.toString();
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}
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getTokenUrl(code: string): string {
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const url = new URL(this.tokenUrl);
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url.searchParams.append("client_id", this.settings.clientId as string);
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url.searchParams.append(
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"client_secret",
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this.settings.clientSecret as string,
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);
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url.searchParams.append("code", code);
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return url.toString();
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}
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async exchangeCode(
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state: string,
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code: string,
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): Promise<ConnectedAccountCommonOAuthTokenResponse> {
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this.validateState(state);
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const url = this.getTokenUrl(code);
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return wretch(url.toString())
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.headers({
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Accept: "application/json",
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})
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.post()
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.json<ConnectedAccountCommonOAuthTokenResponse>()
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.catch((e) => {
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console.error(e);
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throw DiscordApiErrors.GENERAL_ERROR;
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});
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}
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async getUser(token: string): Promise<UserResponse> {
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const url = new URL(this.userInfoUrl);
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return wretch(url.toString())
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.headers({
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Authorization: `Bearer ${token}`,
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})
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.get()
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.json<UserResponse>()
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.catch((e) => {
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console.error(e);
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throw DiscordApiErrors.GENERAL_ERROR;
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});
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}
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async handleCallback(
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params: ConnectionCallbackSchema,
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): Promise<ConnectedAccount | null> {
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const { state, code } = params;
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if (!code) throw new Error("No code provided");
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const userId = this.getUserId(state);
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const tokenData = await this.exchangeCode(state, code);
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const userInfo = await this.getUser(tokenData.access_token);
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const exists = await this.hasConnection(userId, userInfo.id.toString());
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if (exists) return null;
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return await this.createConnection({
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user_id: userId,
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external_id: userInfo.id.toString(),
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friend_sync: params.friend_sync,
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name: userInfo.login,
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type: this.id,
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});
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}
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}
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