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import { Inject } from '@nestjs/common'; |
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import { CommandHandler } from '@nestjs/cqrs'; |
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import { SchoolNotFoundException } from 'src/Domain/School/Exception/SchoolNotFoundException'; |
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import { ISchoolRepository } from 'src/Domain/School/Repository/ISchoolRepository'; |
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import { IDiscountRepository } from 'src/Domain/School/Repository/IDiscountRepository'; |
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import { Discount } from 'src/Domain/School/Discount.entity'; |
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import { CreateDiscountCommand } from './CreateDiscountCommand'; |
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import { IsDiscountAlreadyExist } from 'src/Domain/School/Specification/Discount/IsDiscountAlreadyExist'; |
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import { DiscountAlreadyExistException } from 'src/Domain/School/Exception/DiscountAlreadyExistException'; |
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@CommandHandler(CreateDiscountCommand) |
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export class CreateDiscountCommandHandler { |
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constructor( |
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@Inject('ISchoolRepository') |
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private readonly schoolRepository: ISchoolRepository, |
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@Inject('IDiscountRepository') |
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private readonly discountRepository: IDiscountRepository, |
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private readonly isDiscountAlreadyExist: IsDiscountAlreadyExist, |
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) {} |
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public async execute(command: CreateDiscountCommand): Promise<string> { |
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const { amount, value, type, schoolId } = command; |
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const school = await this.schoolRepository.findOneById(schoolId); |
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if (!school) { |
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throw new SchoolNotFoundException(); |
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} |
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const roundedAmount = Math.round(amount * 100); |
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const roundedValue = Math.round(value * 100); |
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if (true === (await this.isDiscountAlreadyExist.isSatisfiedBy(roundedAmount, school))) { |
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throw new DiscountAlreadyExistException(); |
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} |
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const savedDiscount = await this.discountRepository.save( |
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new Discount( |
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type, |
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roundedAmount, |
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roundedValue, |
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school |
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) |
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); |
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return savedDiscount.getId(); |
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} |
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} |
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fairnesscoop /
pictyschool
