shoc-backend/SeaHavenIndustries/Data/Services/ContactService.cs

using Data.SeaHavenIndustries;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.JSInterop;
using SeaHavenIndustries.Data.IRepository;
using System.Text.Json;

namespace SeaHavenIndustries.Data.Services
{
    public class ContactService : IContactRepository
    {
        private readonly ApplicationDbContext _context;

        public ContactService(ApplicationDbContext context)
        {
            _context = context;
        }

        public async Task<string> AddContact(Contacts contacts)
        {
            _context.ChangeTracker.Clear();
            try
            {
                var exist = _context.Contacts.Where(w => w.Id == contacts.Id).FirstOrDefault();
                if (exist != null)
                {
                    exist.FirstName = contacts.FirstName;
                    exist.LastName = contacts.LastName;
                    exist.PhoneNumber = contacts.PhoneNumber;
                    exist.Email = contacts.Email;
                    _context.Update(exist);

                }
                else
                {
                    _context.Contacts.Add(contacts);
                }
                await _context.SaveChangesAsync();
                return "success";
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }
        public async Task<List<Contacts>> GetContacts()
        {
            var list = await _context.Contacts.ToListAsync();
            return list;
        }
        public async Task<IQueryable<Contacts>> GetContactsiqueryable()
        {
            var list =  _context.Contacts;
            return list;
        }
        public async Task<Contacts> GetContactById(int id)
        {
            var data = await _context.Contacts.Where(w => w.Id == id).FirstOrDefaultAsync();
            return data ?? new Contacts();
        }
        public async Task<string> DeleteContact(int id)
        {
            _context.ChangeTracker.Clear();
            try
            {
                var data = await _context.Contacts.Where(w => w.Id == id).FirstOrDefaultAsync();
                if (data != null)
                {
                    _context.Contacts.Remove(data);
                }
                await _context.SaveChangesAsync();
                return "success";
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }       
    }
}