feat: registration jounrey for parents

src/common/modules/otp/services/otp.service.ts

@@ -0,0 +1,32 @@
+import { Injectable } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { DEFAULT_OTP_DIGIT, DEFAULT_OTP_LENGTH } from '../constants';
+import { GenerateOtpRequestDto, VerifyOtpRequestDto } from '../dtos/request';
+import { OtpRepository } from '../repositories';
+import { generateRandomOtp } from '../utils';
+
+@Injectable()
+export class OtpService {
+  constructor(private readonly configService: ConfigService, private readonly otpRepository: OtpRepository) {}
+  private useMock = this.configService.get<boolean>('USE_MOCK', false);
+  async generateAndSendOtp(sendotpRequest: GenerateOtpRequestDto) {
+    const otp = this.useMock ? DEFAULT_OTP_DIGIT.repeat(DEFAULT_OTP_LENGTH) : generateRandomOtp(DEFAULT_OTP_LENGTH);
+
+    await this.otpRepository.createOtp({ ...sendotpRequest, value: otp });
+
+    this.sendOtp(sendotpRequest, otp);
+
+    return sendotpRequest.phoneNumber.replace(/.(?=.{4})/g, '*');
+  }
+
+  async verifyOtp(verifyOtpRequest: VerifyOtpRequestDto) {
+    const otp = await this.otpRepository.findOtp(verifyOtpRequest);
+
+    return !!otp;
+  }
+
+  private sendOtp(sendotpRequest: GenerateOtpRequestDto, otp: string) {
+    // TODO: send OTP to the user
+    return;
+  }
+}