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import {
ConnectedAccount,
ConnectedAccountCommonOAuthTokenResponse,
ConnectionCallbackSchema,
ConnectionLoader,
DiscordApiErrors,
} from "@spacebar/util";
import wretch from "wretch";
import Connection from "../../util/connections/Connection";
import { BattleNetSettings } from "./BattleNetSettings";
interface BattleNetConnectionUser {
sub: string;
id: number;
battletag: string;
}
interface BattleNetErrorResponse {
error: string;
error_description: string;
}
export default class BattleNetConnection extends Connection {
public readonly id = "battlenet";
public readonly authorizeUrl = "https://oauth.battle.net/authorize";
public readonly tokenUrl = "https://oauth.battle.net/token";
public readonly userInfoUrl = "https://us.battle.net/oauth/userinfo";
public readonly scopes = [];
settings: BattleNetSettings = new BattleNetSettings();
init(): void {
this.settings = ConnectionLoader.getConnectionConfig(
this.id,
this.settings,
) as BattleNetSettings;
}
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("scope", this.scopes.join(" "));
url.searchParams.append("state", state);
url.searchParams.append("response_type", "code");
return url.toString();
}
getTokenUrl(): string {
return this.tokenUrl;
}
async exchangeCode(
state: string,
code: string,
): Promise<ConnectedAccountCommonOAuthTokenResponse> {
this.validateState(state);
const url = this.getTokenUrl();
return wretch(url.toString())
.headers({
Accept: "application/json",
})
.body(
new URLSearchParams({
grant_type: "authorization_code",
code: code,
client_id: this.settings.clientId!,
client_secret: this.settings.clientSecret!,
redirect_uri: this.getRedirectUri(),
}),
)
.post()
.json<ConnectedAccountCommonOAuthTokenResponse>()
.catch((e) => {
console.error(e);
throw DiscordApiErrors.GENERAL_ERROR;
});
}
async getUser(token: string): Promise<BattleNetConnectionUser> {
const url = new URL(this.userInfoUrl);
return wretch(url.toString())
.headers({
Authorization: `Bearer ${token}`,
})
.get()
.json<BattleNetConnectionUser>()
.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.toString());
if (exists) return null;
return await this.createConnection({
user_id: userId,
external_id: userInfo.id.toString(),
friend_sync: params.friend_sync,
name: userInfo.battletag,
type: this.id,
});
}
}
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