schedtxt_api/Controllers/ContactManagement.cs

using TextSender_API.Models;

namespace TextSender_API.Controllers;

public class ContactManagement
{
    #region Fields
    private IConfiguration _config;
    #endregion


    #region Constructors
    public ContactManagement(IConfiguration config)
    {
        this._config = config;
    }
    #endregion


    #region Methods
    // Queues the contact file to be processed latter
    public ContactCreationQueue QueueContact(IFormFile file)
    {
        var queue = new ContactCreationQueue();
        queue.Processed = false;
        var directory = this._config["Paths:ContactQueueDirectory"];

        if (directory!.ElementAt(directory!.Length - 1) != '/')
        {
            directory.Append('/');
        }

        if (!System.IO.Directory.Exists(directory))
        {
            queue.Status = "Missing directory";
            // Directory does not exist
            return queue;
        }

        var length = 16;
        var chars = "ABCDEF0123456789";
        var random = new Random();
        var filename = new string(Enumerable.Repeat(chars, length).Select(s =>
            s[random.Next(s.Length)]).ToArray());
        var extension = ".txt";

        var contactPath = $"{directory}/{filename}{extension}";
        queue.Filepath = contactPath;

        if (System.IO.File.Exists(contactPath))
        {
            // Already exists
            queue.Status = "File exists";
            return queue;
        }

        queue.Status = "Created";

        using (var filestream = new FileStream(contactPath, FileMode.Create))
        {
            file.CopyTo(filestream);
        }

        return queue;
    }
    #endregion
}