fairnesscoop / pictyschool

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

import { Repository } from 'typeorm';

import { InjectRepository } from '@nestjs/typeorm';

import { Discount } from 'src/Domain/School/Discount.entity';

import { IDiscountRepository } from 'src/Domain/School/Repository/IDiscountRepository';

import { School } from 'src/Domain/School/School.entity';

@Injectable()

export class DiscountRepository implements IDiscountRepository {

  constructor(

    @InjectRepository(Discount)

    private readonly repository: Repository<Discount>

  ) {}

  public save(discount: Discount): Promise<Discount> {

    return this.repository.save(discount);

  }

  public remove(discount: Discount): void {

    this.repository.delete(discount.getId());

  }

  public findOneById(id: string): Promise<Discount | undefined> {

    return this.repository

      .createQueryBuilder('discount')

      .select(['discount.id'])

      .where('discount.id = :id', { id })

      .getOne();

  }

  public findOneByAmountAndSchool(amount: number, school: School): Promise<Discount | undefined> {

    return this.repository

      .createQueryBuilder('discount')

      .select(['discount.id'])

      .innerJoin('discount.school', 'school', 'school.id = :school', {

        school: school.getId()

      })

      .where('discount.amount = :amount', { amount })

      .getOne();

  }

  public findBySchool(schoolId: string): Promise<Discount[]> {

    return this.repository

      .createQueryBuilder('discount')

      .select([

        'discount.id',

        'discount.type',

        'discount.amount',

        'discount.value',

      ])

      .innerJoin('discount.school', 'school', 'school.id = :schoolId', { schoolId })

      .orderBy('discount.amount', 'ASC')

      .getMany();

  }

  public countBySchool(id: string): Promise<number> {

    return this.repository

      .createQueryBuilder('discount')

      .select('discount.id')

      .innerJoin('discount.school', 'school', 'school.id = :id', { id })

      .getCount();

  }

}