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