diff --git a/src/connections/Facebook/index.ts b/src/connections/Facebook/index.ts
new file mode 100644
index 00000000..8e0f8d27
--- /dev/null
+++ b/src/connections/Facebook/index.ts
@@ -0,0 +1,119 @@
+import {
+ ConnectedAccount,
+ ConnectedAccountCommonOAuthTokenResponse,
+ ConnectionCallbackSchema,
+ ConnectionLoader,
+ DiscordApiErrors,
+} from "@spacebar/util";
+import wretch from "wretch";
+import Connection from "../../util/connections/Connection";
+import { FacebookSettings } from "./FacebookSettings";
+
+export interface FacebookErrorResponse {
+ error: {
+ message: string;
+ type: string;
+ code: number;
+ fbtrace_id: string;
+ };
+}
+
+interface UserResponse {
+ name: string;
+ id: string;
+}
+
+export default class FacebookConnection extends Connection {
+ public readonly id = "facebook";
+ public readonly authorizeUrl =
+ "https://www.facebook.com/v14.0/dialog/oauth";
+ public readonly tokenUrl =
+ "https://graph.facebook.com/v14.0/oauth/access_token";
+ public readonly userInfoUrl = "https://graph.facebook.com/v14.0/me";
+ public readonly scopes = ["public_profile"];
+ settings: FacebookSettings = new FacebookSettings();
+
+ init(): void {
+ this.settings = ConnectionLoader.getConnectionConfig(
+ this.id,
+ this.settings,
+ ) as FacebookSettings;
+ }
+
+ getAuthorizationUrl(userId: string): string {
+ const state = this.createState(userId);
+ const url = new URL(this.authorizeUrl);
+
+ url.searchParams.append("client_id", this.settings.clientId!);
+ url.searchParams.append("redirect_uri", this.getRedirectUri());
+ url.searchParams.append("state", state);
+ url.searchParams.append("response_type", "code");
+ url.searchParams.append("scope", this.scopes.join(" "));
+ url.searchParams.append("display", "popup");
+ return url.toString();
+ }
+
+ getTokenUrl(code: string): string {
+ const url = new URL(this.tokenUrl);
+ url.searchParams.append("client_id", this.settings.clientId!);
+ url.searchParams.append("client_secret", this.settings.clientSecret!);
+ url.searchParams.append("code", code);
+ url.searchParams.append("redirect_uri", this.getRedirectUri());
+ return url.toString();
+ }
+
+ async exchangeCode(
+ state: string,
+ code: string,
+ ): Promise<ConnectedAccountCommonOAuthTokenResponse> {
+ this.validateState(state);
+
+ const url = this.getTokenUrl(code);
+
+ return wretch(url.toString())
+ .headers({
+ Accept: "application/json",
+ })
+ .get()
+ .json<ConnectedAccountCommonOAuthTokenResponse>()
+ .catch((e) => {
+ console.error(e);
+ throw DiscordApiErrors.GENERAL_ERROR;
+ });
+ }
+
+ async getUser(token: string): Promise<UserResponse> {
+ const url = new URL(this.userInfoUrl);
+
+ return wretch(url.toString())
+ .headers({
+ Authorization: `Bearer ${token}`,
+ })
+ .get()
+ .json<UserResponse>()
+ .catch((e) => {
+ console.error(e);
+ throw DiscordApiErrors.GENERAL_ERROR;
+ });
+ }
+
+ async handleCallback(
+ params: ConnectionCallbackSchema,
+ ): Promise<ConnectedAccount | null> {
+ const userId = this.getUserId(params.state);
+ const tokenData = await this.exchangeCode(params.state, params.code!);
+ const userInfo = await this.getUser(tokenData.access_token);
+
+ const exists = await this.hasConnection(userId, userInfo.id);
+
+ if (exists) return null;
+
+ return await this.createConnection({
+ user_id: userId,
+ external_id: userInfo.id,
+ friend_sync: params.friend_sync,
+ name: userInfo.name,
+ type: this.id,
+ });
+ }
+}
|
