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 GetFilteredList(AnswerSearchModel model) { if (model.Id.HasValue) { var result = GetElement(model); return result != null ? new() { result } : new(); } using var context = new ForumDataBase(); IQueryable? 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 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; } } }