96 lines
3.4 KiB
C#
96 lines
3.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Threading.Tasks;
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using BlueWest.Data;
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using Microsoft.EntityFrameworkCore;
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namespace BlueWest.WebApi.EF
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{
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/// <summary>
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/// Currency table data extensions
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/// </summary>
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public static class CurrencyExtensions
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{
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/// <summary>
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/// Add new Currency
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/// </summary>
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/// <param name="dbContext"></param>
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/// <param name="currencyToCreate"></param>
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/// <returns></returns>
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public static (bool, Currency) AddCurrency(this CountryDbContext dbContext, CurrencyCreate currencyToCreate)
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{
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var newCurrency = new Currency(currencyToCreate);
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dbContext.Add(newCurrency);
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var resultOperation = dbContext.SaveChanges() >= 0;
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return (resultOperation, newCurrency);
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}
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/// <summary>
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/// Updates currency
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/// </summary>
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/// <param name="dbContext"></param>
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/// <param name="currencyId"></param>
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/// <param name="currencyToUpdate"></param>
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/// <returns></returns>
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public static (bool, Currency) UpdateCurrency(this CountryDbContext dbContext, int currencyId, CurrencyUpdate currencyToUpdate)
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{
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var currency = dbContext.Currencies.SingleOrDefault(x => x.Id == currencyId);
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if (currency == null) return (false, null);
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currency.Update(currencyToUpdate);
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dbContext.Update(currency);
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var resultOperation = dbContext.SaveChanges() >= 0;
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return (resultOperation, currency);
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}
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/// <summary>
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/// Add Country associated with specified Currency.
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/// </summary>
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/// <param name="dbContext"></param>
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/// <param name="currencyId"></param>
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/// <param name="countryCreate"></param>
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/// <param name="duplicationValidations"></param>
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/// <returns></returns>
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public static (bool, string, CountryUnique) AddCountry(
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this CountryDbContext dbContext,
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int currencyId, CountryCreate countryCreate,
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Expression<Func<Country,bool>>[] duplicationValidations)
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{
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var queryable = from aCurrency in dbContext.Currencies
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where aCurrency.Id == currencyId
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select aCurrency;
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queryable.Include(x => x.Countries);
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var currency = queryable.SingleOrDefault();
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// Check if currency exists
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if (currency == null) return (false, $"{nameof(Currency)}: {currencyId} - Not found.", null);
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// Check if there's currency with the same code
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foreach (var duplicationValidation in duplicationValidations)
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{
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var countryToCheck = dbContext.Countries.FirstOrDefault(duplicationValidation);
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if (countryToCheck != null)
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{
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return (false, $"Duplication Validation failed: {duplicationValidation.Body}", null);
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}
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}
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// Creates new currency
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var newCountry = new Country(countryCreate);
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currency.Countries.Add(newCountry);
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var success = dbContext.SaveChanges() >= 0;
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return (success, string.Empty, new CountryUnique(newCountry));
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}
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}
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}
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