fairnesscoop / pictyschool

import { Inject } from '@nestjs/common';

import { CommandHandler } from '@nestjs/cqrs';

import { ShippingCostAlreadyExistException } from 'src/Domain/Order/Exception/ShippingCostAlreadyExistException';

import { IShippingCostRepository } from 'src/Domain/Order/Repository/IShippingCostRepository';

import { ShippingCost } from 'src/Domain/Order/ShippingCost.entity';

import { IsShippingCostAlreadyExist } from 'src/Domain/Order/Specification/IsShippingCostAlreadyExist';

import { CreateShippingCostCommand } from './CreateShippingCostCommand';

@CommandHandler(CreateShippingCostCommand)

export class CreateShippingCostCommandHandler {

  constructor(

    @Inject('IShippingCostRepository')

    private readonly shippingcostRepository: IShippingCostRepository,

    private readonly isShippingCostAlreadyExist: IsShippingCostAlreadyExist

  ) {}

  public async execute(command: CreateShippingCostCommand): Promise<string> {

    const { grams, price } = command;

    if (true === (await this.isShippingCostAlreadyExist.isSatisfiedBy(grams))) {

      throw new ShippingCostAlreadyExistException();

    }

    const shippingCost = await this.shippingcostRepository.save(

      new ShippingCost(grams, Math.round(price * 100))

    );

    return shippingCost.getId();

  }

}