fix(api): close auth, billing and authorization bypasses (#2065)

fluxer_api/src/api/guild/services/member/GuildMemberAuthService.ts

@@ -5,6 +5,8 @@ import {MissingPermissionsError} from '@fluxer/errors/src/domains/core/MissingPe
 import type {GuildResponse} from '@fluxer/schema/src/domains/guild/GuildResponseSchemas';
 import type {GuildID, RoleID, UserID} from '../../../BrandedTypes';
 import type {IGatewayService} from '../../../infrastructure/IGatewayService';
+import type {IUserRepository} from '../../../user/IUserRepository';
+import {createGuildMfaEnforcer} from '../GuildMfaEnforcement';
 
 interface GuildAuth {
 	guildData: GuildResponse;
@@ -16,14 +18,19 @@ interface GuildAuth {
 }
 
 export class GuildMemberAuthService {
-	constructor(private readonly gatewayService: IGatewayService) {}
+	constructor(
+		private readonly gatewayService: IGatewayService,
+		private readonly userRepository: IUserRepository,
+	) {}
 
 	async getGuildAuthenticated({userId, guildId}: {userId: UserID; guildId: GuildID}): Promise<GuildAuth> {
 		const guildData = await this.gatewayService.getGuildData({guildId, userId});
 		if (!guildData) throw new MissingAccessError();
+		const enforceGuildMfa = await createGuildMfaEnforcer({userRepository: this.userRepository, guildData, userId});
 		const checkPermission = async (permission: bigint) => {
 			const hasPermission = await this.gatewayService.checkPermission({guildId, userId, permission});
 			if (!hasPermission) throw new MissingPermissionsError();
+			enforceGuildMfa(permission);
 		};
 		const checkTargetMember = async (targetUserId: UserID) => {
 			const canManage = await this.gatewayService.checkTargetMember({guildId, userId, targetUserId});