dev-connect/server/CreatePost.cs

using System.Net;
using MySql.Data.MySqlClient;

namespace Server;

public class CreatePost : SecuredRoute
{
    public static void HandleRequest(HttpListenerRequest request, HttpListenerResponse response)
    {
        try
        {
            List<string> bodyParamNames = ["message"];
            string user_id = ExtractUserId(request);
            var bodyParamValues = ExtractBody(request, bodyParamNames);
            ValidateParams(bodyParamValues);

            bodyParamNames.Add("user_id");
            bodyParamValues["user_id"] = user_id;

            MySqlCommand cmd = new(CreateInsertQuery("post", bodyParamNames));

            cmd = AddValuesToCmd(bodyParamValues, cmd);

            using MySqlConnection conn = new(connectionString);
            conn.Open();
            cmd.Connection = conn;
            cmd.ExecuteNonQuery();

            SendSuccess(response);
        }
        catch (Exception ex)
        {
            SendError(response, ex);
        }
    }

    private static void ValidateParams(Dictionary<string, string> paramsToValidate)
    {
        if (paramsToValidate["message"].Length > 1000)
        {
            throw new Exception("Wrong parameters");
        }
    }
}