drinkrate/DrinkRateAPI/Services/ProductCompanyTableCoupleService.cs

using DrinkRateAPI.ApiModels.ProductTable;
using DrinkRateAPI.Contexts;
using DrinkRateAPI.DbEntities;
using DrinkRateAPI.Exceptions;
using Microsoft.EntityFrameworkCore;

namespace DrinkRateAPI.Services;

public class ProductCompanyTableCoupleService(ApplicationDbContext context)
{
    private ApplicationDbContext _context = context;

    public async Task<ProductCompanyTableCouplePostResponse> PostProductCompanyTableCoupleAsync(
        ProductCompanyTableCouplePost productCompanyTableCouplePost)
    {
        var companyTable = new DbCompanyTable
        {
            CompanyTableName = productCompanyTableCouplePost.CompanyTableName,
            ProductTable = new DbProductTable
            {
                ProductTableName = productCompanyTableCouplePost.ProductTableName
            }
        };

        _context.CompanyTable.Add(companyTable);
        await _context.SaveChangesAsync();

        return await GetProductCompanyTableCouplePostResponse(
            productCompanyTableCouplePost.ProductTableName,
            productCompanyTableCouplePost.CompanyTableName);
    }

    private async Task<ProductCompanyTableCouplePostResponse> GetProductCompanyTableCouplePostResponse(
        string productTableName, string companyTableName)
    {
        var productTable =
            await _context.ProductTable.FirstOrDefaultAsync(x => x.ProductTableName == productTableName) ??
            throw new NotFoundException();
        var companyTable =
            await _context.CompanyTable.FirstOrDefaultAsync(x => x.CompanyTableName == companyTableName) ??
            throw new NotFoundException();

        return new ProductCompanyTableCouplePostResponse
        {
            ProductTableName = productTable.ProductTableName,
            ProductTableId = productTable.Id.ToString(),
            CompanyTableName = companyTable.CompanyTableName,
            CompanyTableId = companyTable.Id.ToString()
        };
    }
}