なんかもうめっちゃ変えた

packages/backend/src/core/CaptchaService.ts

@@ -0,0 +1,70 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { DI } from '@/di-symbols.js';
+import type { UsersRepository } from '@/models/index.js';
+import { Config } from '@/config.js';
+import { HttpRequestService } from './HttpRequestService.js';
+
+type CaptchaResponse = {
+	success: boolean;
+	'error-codes'?: string[];
+};
+
+@Injectable()
+export class CaptchaService {
+	constructor(
+		@Inject(DI.config)
+		private config: Config,
+
+		private httpRequestService: HttpRequestService,
+	) {
+	}
+
+	async #getCaptchaResponse(url: string, secret: string, response: string): Promise<CaptchaResponse> {
+		const params = new URLSearchParams({
+			secret,
+			response,
+		});
+	
+		const res = await fetch(url, {
+			method: 'POST',
+			body: params,
+			headers: {
+				'User-Agent': this.config.userAgent,
+			},
+			// TODO
+			//timeout: 10 * 1000,
+			agent: (url, bypassProxy) => this.httpRequestService.getAgentByUrl(url, bypassProxy),
+		}).catch(err => {
+			throw `${err.message ?? err}`;
+		});
+	
+		if (!res.ok) {
+			throw `${res.status}`;
+		}
+	
+		return await res.json() as CaptchaResponse;
+	}	
+	
+	public async verifyRecaptcha(secret: string, response: string): Promise<void> {
+		const result = await this.#getCaptchaResponse('https://www.recaptcha.net/recaptcha/api/siteverify', secret, response).catch(e => {
+			throw `recaptcha-request-failed: ${e}`;
+		});
+
+		if (result.success !== true) {
+			const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
+			throw `recaptcha-failed: ${errorCodes}`;
+		}
+	}
+
+	public async verifyHcaptcha(secret: string, response: string): Promise<void> {
+		const result = await this.#getCaptchaResponse('https://hcaptcha.com/siteverify', secret, response).catch(e => {
+			throw `hcaptcha-request-failed: ${e}`;
+		});
+
+		if (result.success !== true) {
+			const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
+			throw `hcaptcha-failed: ${errorCodes}`;
+		}
+	}
+}
+