feat: initial implementation of new sign-in oauth

packages/api-client/src/modules/labrinth/auth/v2.ts

@@ -57,6 +57,23 @@ export class LabrinthAuthV2Module extends AbstractModule {
 		})
 	}
 
+	/**
+	 * Create a new account from an OAuth callback flow state
+	 *
+	 * @param data - OAuth account creation data
+	 * @returns Promise resolving to a session response
+	 */
+	public async createOAuthAccount(
+		data: Labrinth.Auth.v2.CreateOAuthAccountRequest,
+	): Promise<Labrinth.Auth.v2.CreateOAuthAccountResponse> {
+		return this.client.request<Labrinth.Auth.v2.CreateOAuthAccountResponse>(`/auth/create/oauth`, {
+			api: 'labrinth',
+			version: 2,
+			method: 'POST',
+			body: data,
+		})
+	}
+
 	/**
 	 * Begin a password reset flow by sending a recovery email
 	 *

packages/api-client/src/modules/labrinth/types.ts

@@ -278,6 +278,17 @@ export namespace Labrinth {
 				session: string
 			}
 
+			export type CreateOAuthAccountRequest = {
+				username: string
+				state: string
+				challenge: string
+				sign_up_newsletter: boolean
+			}
+
+			export type CreateOAuthAccountResponse = {
+				session: string
+			}
+
 			export type ResetPasswordRequest = {
 				username: string
 				challenge: string