NoteApp/noteApi/Repository/NoteRepository.cs

using Microsoft.EntityFrameworkCore;
using noteApi.Data;
using noteApi.Dtos.Note;
using noteApi.Interfaces;
using noteApi.Mappers;
using noteApi.Models;

namespace noteApi.Repository
{
    public class NoteRepository : INoteRepository
    {
        private readonly ApplicationDbContext _context;
        public NoteRepository(ApplicationDbContext context)
        {
            _context = context;
        }

        public async Task<Note> CreateAsync(CreateNoteDto noteModel)
        {
            var note = noteModel.ToNoteFromCreateDto();
            await _context.Notes.AddAsync(note);
            await _context.SaveChangesAsync();
            return note;
        }

        public async Task<Note?> DeleteAsync(int id)
        {
            var noteModel = await _context.Notes.FirstOrDefaultAsync(x => x.Id == id);

            if (noteModel == null)
            {
                return null;
            }

            _context.Notes.Remove(noteModel);
            _context.SaveChanges();

            return noteModel;
        }

        public async Task<List<Note>> GetAllAsync()
        {
            return await _context.Notes.ToListAsync();
        }

        public async Task<Note?> GetByIdAsync(int id)
        {
            return await _context.Notes.FindAsync(id);
        }

        public async Task<Note?> UpdateAsync(int id, CreateNoteDto noteModel)
        {
            var existingNote = await _context.Notes.FirstOrDefaultAsync(x => x.Id == id);

            if (existingNote == null)
            {
                return null;
            }

            existingNote.Title = noteModel.Title;
            existingNote.Content = noteModel.Content;
            _context.SaveChanges();

            return existingNote;
        }
    }
}