Add Discord provider

src/providers/discord.ts

@@ -0,0 +1,56 @@
+import { OAuth2Provider, OAuth2ProviderConfig } from "./oauth2";
+
+export interface DiscordProfile {
+  id: string;
+  username: string;
+  discriminator: string;
+  avatar?: string;
+  bot: boolean;
+  system: boolean;
+  mfa_enabled: boolean;
+  banner?: string;
+  accent_color?: number;
+  locale: string;
+  flags: number;
+  premium_type: number;
+  public_flags: number;
+}
+
+export interface DiscordTokens {
+  access_token: string;
+  token_type: string;
+  expires_in: number;
+  refresh_token: string;
+  scope: string;
+}
+
+type DiscordOAuth2ProviderConfig = OAuth2ProviderConfig<DiscordProfile, DiscordTokens>;
+
+const defaultConfig: Partial<DiscordOAuth2ProviderConfig> = {
+  id: "discord",
+  scope: "identify",
+  accessTokenUrl: "https://discord.com/api/oauth2/token",
+  authorizationUrl: "https://discord.com/api/oauth2/authorize",
+  profileUrl: "https://discord.com/api/users/@me",
+  contentType: "application/json"
+};
+
+export class DiscordOAuth2Provider extends OAuth2Provider<
+  DiscordProfile,
+  DiscordTokens,
+  DiscordOAuth2ProviderConfig
+> {
+  constructor(config: DiscordOAuth2ProviderConfig) {
+    super({
+      ...defaultConfig,
+      ...config,
+    });
+  }
+
+  async getUserProfile(tokens: DiscordTokens): Promise<DiscordProfile> {
+    const res = await fetch(this.config.profileUrl!, {
+      headers: { Authorization: `Bearer ${tokens.access_token}` },
+    });
+    return await res.json();
+  }
+}

src/providers/index.ts

@@ -1,4 +1,6 @@
 export { Provider } from "./base";
+export { DiscordOAuth2Provider } from "./discord";
+export type { DiscordProfile, DiscordTokens } from "./discord";
 export { GitHubOAuth2Provider } from "./github";
 export type { GitHubProfile, GitHubTokens } from "./github";
 export { GoogleOAuth2Provider } from "./google";