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import { Injectable } from '@nestjs/common';
import { HttpRequestService } from '@/core/HttpRequestService.js';
import { bindThis } from '@/decorators.js';
type CaptchaResponse = {
success: boolean;
'error-codes'?: string[];
};
@Injectable()
export class CaptchaService {
constructor(
private httpRequestService: HttpRequestService,
) {
}
@bindThis
private async getCaptchaResponse(url: string, secret: string, response: string): Promise<CaptchaResponse> {
const params = new URLSearchParams({
secret,
response,
});
const res = await this.httpRequestService.send(url, {
method: 'POST',
body: params.toString(),
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
}, { throwErrorWhenResponseNotOk: false });
if (!res.ok) {
throw `${res.status}`;
}
return await res.json() as CaptchaResponse;
}
@bindThis
public async verifyRecaptcha(secret: string, response: string | null | undefined): Promise<void> {
if (response == null) {
throw 'recaptcha-failed: no response provided';
}
const result = await this.getCaptchaResponse('https://www.recaptcha.net/recaptcha/api/siteverify', secret, response).catch(err => {
throw `recaptcha-request-failed: ${err}`;
});
if (result.success !== true) {
const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
throw `recaptcha-failed: ${errorCodes}`;
}
}
@bindThis
public async verifyHcaptcha(secret: string, response: string | null | undefined): Promise<void> {
if (response == null) {
throw 'hcaptcha-failed: no response provided';
}
const result = await this.getCaptchaResponse('https://hcaptcha.com/siteverify', secret, response).catch(err => {
throw `hcaptcha-request-failed: ${err}`;
});
if (result.success !== true) {
const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
throw `hcaptcha-failed: ${errorCodes}`;
}
}
@bindThis
public async verifyTurnstile(secret: string, response: string | null | undefined): Promise<void> {
if (response == null) {
throw 'turnstile-failed: no response provided';
}
const result = await this.getCaptchaResponse('https://challenges.cloudflare.com/turnstile/v0/siteverify', secret, response).catch(err => {
throw `turnstile-request-failed: ${err}`;
});
if (result.success !== true) {
const errorCodes = result['error-codes'] ? result['error-codes'].join(', ') : '';
throw `turnstile-failed: ${errorCodes}`;
}
}
}
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