schedtxt_api/Controllers/ContactsController.cs

using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;

using TextSender_API.Models;
using TextSender_API.Repositories;

namespace TextSender_API.Controllers;

[Authorize]
[ApiController]
[Route("api/v1/contact")]
public class ContactsController : ControllerBase
{
    #region Fields
    private IConfiguration _config;
    private readonly ILogger<ContactsController> _logger;
    #endregion


    #region Constructors        

    public ContactsController(ILogger<ContactsController> logger, IConfiguration config)
    {
        this._logger = logger;
        this._config = config;
    }
    #endregion

    #region Methods
    [HttpPost("new"), DisableRequestSizeLimit]
    public IActionResult CreateContact([FromBody] Contact contact)
    {
        var response = new CreateContactResponse();
        var connString = this._config.GetConnectionString("MongoDBURI");
        var userRepo = new UsersRepository(connString!);
        var contactsRepo = new ContactsRepository(connString!);

        try
        {
            var contacts = contactsRepo.RetrieveAll();

            if (contacts.Exists(c => c.PhoneNumber!.Equals(contact.PhoneNumber)) ||
                string.IsNullOrEmpty(contact.UserID))
            {
                // The Contact already exists
                return BadRequest(response);
            }

            var user = new User { Id = contact.UserID };

            if (!userRepo.Exists(user).Item1)
            {
                return BadRequest(response);
            }

            contactsRepo.Create(contact);
            response.Data.Add(contact);
        }
        catch (Exception ex)
        {
            this._logger.LogError($"An error occurred: {ex.Message}");
        }

        return Ok(response);
    }
    #endregion


    #region Responses
    public class CreateContactResponse
    {
        #region Properties
        [JsonProperty("data")]
        public List<Contact> Data { get; set; }
        #endregion

        #region Constructors
        public CreateContactResponse()
        {
            this.Data = new List<Contact>();
        }
        #endregion
    }
    #endregion
}