132 lines
3.6 KiB
C#
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using ForumContracts.BindingModels;
using ForumContracts.SearchModels;
using ForumContracts.StorageContracts;
using ForumContracts.ViewModels;
using ForumDatabaseImplement.Models;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ForumDatabaseImplement.Implements
{
public class AnswerStorage : IAnswerStorage
{
public AnswerViewModel? Delete(AnswerBindingModel model)
{
using var context = new ForumDataBase();
var element = context.Answers
.Include(x => x.User)
.Include(x => x.Question)
.FirstOrDefault(rec => rec.Id == model.Id);
if (element != null)
{
context.Answers.Remove(element);
context.SaveChanges();
return element.GetViewModel;
}
return null;
}
public AnswerViewModel? GetElement(AnswerSearchModel model)
{
if (!model.Id.HasValue)
{
return null;
}
using var context = new ForumDataBase();
return context.Answers
.Include(x => x.User)
.Include(x => x.Question)
.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))
?.GetViewModel;
}
public List<AnswerViewModel> GetFilteredList(AnswerSearchModel model)
{
if (model.Id.HasValue)
{
var result = GetElement(model);
return result != null ? new() { result } : new();
}
using var context = new ForumDataBase();
IQueryable<Answer>? queryWhere = null;
if (model.QuestionId.HasValue)
{
queryWhere = context.Answers.Where(x => x.QuestionId == model.QuestionId);
}
else
{
return new();
}
return queryWhere
.Include(x => x.Question)
.Include(x => x.User)
.Select(x => x.GetViewModel)
.ToList();
}
public List<AnswerViewModel> GetFullList()
{
using var context = new ForumDataBase();
return context.Answers
.Include(x => x.User)
.Include(x => x.Question)
.Select(x => x.GetViewModel).ToList();
}
public AnswerViewModel? Insert(AnswerBindingModel model)
{
var newAnswer = Answer.Create(model);
if (newAnswer == null)
{
return null;
}
using var context = new ForumDataBase();
context.Answers.Add(newAnswer);
context.SaveChanges();
return context.Answers
.Include(x => x.Question)
.Include(x => x.User)
.FirstOrDefault(x => x.Id == newAnswer.Id)
?.GetViewModel;
}
public AnswerViewModel? Update(AnswerBindingModel model)
{
using var context = new ForumDataBase();
var answer = context.Answers
.Include(x => x.Question)
.Include(x => x.User)
.FirstOrDefault(x => x.Id == model.Id);
if (answer == null)
{
return null;
}
answer.Update(model);
context.SaveChanges();
return answer.GetViewModel;
}
}
}