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import {
Config,
ConnectedAccount,
ConnectedAccountCommonOAuthTokenResponse,
ConnectionCallbackSchema,
ConnectionLoader,
DiscordApiErrors,
} from "@fosscord/util";
import fetch from "node-fetch";
import Connection from "../../util/connections/Connection";
import { RedditSettings } from "./RedditSettings";
export interface UserResponse {
verified: boolean;
coins: number;
id: string;
is_mod: boolean;
has_verified_email: boolean;
total_karma: number;
name: string;
created: number;
gold_creddits: number;
created_utc: number;
}
export interface ErrorResponse {
message: string;
error: number;
}
export default class RedditConnection extends Connection {
public readonly id = "reddit";
public readonly authorizeUrl = "https://www.reddit.com/api/v1/authorize";
public readonly tokenUrl = "https://www.reddit.com/api/v1/access_token";
public readonly userInfoUrl = "https://oauth.reddit.com/api/v1/me";
public readonly scopes = ["identity"];
settings: RedditSettings = new RedditSettings();
init(): void {
this.settings = ConnectionLoader.getConnectionConfig(
this.id,
this.settings,
) as RedditSettings;
}
getAuthorizationUrl(userId: string): string {
const state = this.createState(userId);
const url = new URL(this.authorizeUrl);
url.searchParams.append("client_id", this.settings.clientId!);
// TODO: probably shouldn't rely on cdn as this could be different from what we actually want. we should have an api endpoint setting.
url.searchParams.append(
"redirect_uri",
`${
Config.get().cdn.endpointPrivate || "http://localhost:3001"
}/connections/${this.id}/callback`,
);
url.searchParams.append("response_type", "code");
url.searchParams.append("scope", this.scopes.join(" "));
url.searchParams.append("state", state);
return url.toString();
}
getTokenUrl(): string {
return this.tokenUrl;
}
async exchangeCode(
state: string,
code: string,
): Promise<ConnectedAccountCommonOAuthTokenResponse> {
this.validateState(state);
const url = this.getTokenUrl();
return fetch(url.toString(), {
method: "POST",
headers: {
Accept: "application/json",
Authorization: `Basic ${Buffer.from(
`${this.settings.clientId}:${this.settings.clientSecret}`,
).toString("base64")}`,
"Content-Type": "application/x-www-form-urlencoded",
},
body: new URLSearchParams({
grant_type: "authorization_code",
code: code,
redirect_uri: `${
Config.get().cdn.endpointPrivate || "http://localhost:3001"
}/connections/${this.id}/callback`,
}),
})
.then((res) => res.json())
.catch((e) => {
console.error(
`Error exchanging token for ${this.id} connection: ${e}`,
);
throw DiscordApiErrors.INVALID_OAUTH_TOKEN;
});
}
async getUser(token: string): Promise<UserResponse> {
const url = new URL(this.userInfoUrl);
return fetch(url.toString(), {
method: "GET",
headers: {
Authorization: `Bearer ${token}`,
},
}).then((res) => res.json());
}
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.toString());
if (exists) return null;
// TODO: connection metadata
return await this.createConnection({
user_id: userId,
external_id: userInfo.id.toString(),
friend_sync: params.friend_sync,
name: userInfo.name,
verified: userInfo.has_verified_email,
type: this.id,
});
}
}
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