using System;

using System.Text;

using System.Collections.Generic;

using System.Linq;

using Newtonsoft.Json;

​

public class Program

{

    public static void Main()

    {

        var Personals= new List<Persona>();

        Personals.Add(new Persona(){ Name= "Tom",Turno="Mañana", Dates=DateTime.Now.Date });

        Personals.Add(new Persona(){ Name = "Eder", Turno = "Mañana", Dates = DateTime.Now.Date });

        Personals.Add(new Persona(){ Name = "Stiven", Turno = "Tarde", Dates = DateTime.Now.Date });

        Personals.Add(new Persona(){ Name= "Tom",Turno="Tarde", Dates=DateTime.Now.AddDays(-1).Date });

        Personals.Add(new Persona(){ Name = "Eder", Turno = "Tarde", Dates = DateTime.Now.AddDays(-1).Date });

        Personals.Add(new Persona(){ Name = "Stiven", Turno = "Mañana", Dates = DateTime.Now.AddDays(-1).Date });

        var dates = Personals.Select(a => a.Dates).Distinct().ToList();

        var fin = new List<FechaTurno>();

        foreach (var i in dates){

            var soloTurn = Personals.Where(a => a.Dates == i).Select(a => a.Turno).Distinct().ToList();

            var tur = new List<TurnoPersonas>();

            foreach (var j in soloTurn){

                tur.Add(new TurnoPersonas(){ Turno = j, Personas = Personals.Where(a => a.Turno == j && a.Dates == i).Select(a => a.Name).ToList() });

            }

            fin.Add(new FechaTurno(){ Fecha = i, Turno = tur });

        }

        /*

        var turnos = new List<FechaTurno>();

        turnos.Add(

            new FechaTurno(){ Fecha = DateTime.Now.Date, Turno = new List<TurnoPersonas>(){ 

                new TurnoPersonas(){ Turno = "Mañana", 

                                    Personas = new List<Personas>(){ 

                                        new Personas(){ Identificacion = "1152447259", Nombre = "Tomas Velez" },

                                        new Personas(){ Identificacion = "1231231231", Nombre = "Juanito Alimaña" } }

                                    },

                new TurnoPersonas(){ Turno = "Tarde", 

                                    Personas = new List<Personas>(){ 

                                        new Personas(){ Identificacion = "1112223331", Nombre = "Benito Cámelas" },

                                        new Personas(){ Identificacion = "4445556664", Nombre = "Mónica Corra" },

                                        new Personas(){ Identificacion = "7778889997", Nombre = "Armando Casas" } }

                                    }

                }

        });

        turnos.Add(

            new FechaTurno(){ Fecha = DateTime.Now.AddDays(-1).Date, Turno = new List<TurnoPersonas>(){ 

                new TurnoPersonas(){ Turno = "Mañana", 

                                    Personas = new List<Personas>(){ 

                                        new Personas(){ Identificacion = "0001112221", Nombre = "Omar Solarte" },

                                        new Personas(){ Identificacion = "1112223331", Nombre = "Benito Cámelas" } }

                                    },

                new TurnoPersonas(){ Turno = "Tarde", 

                                    Personas = new List<Personas>(){ 

                                        new Personas(){ Identificacion = "1152447259", Nombre = "Tomás Vélez" },

                                        new Personas(){ Identificacion = "4445556664", Nombre = "Mónica Corra" },

                                        new Personas(){ Identificacion = "7778889997", Nombre = "Armando Casas" } }

                                    }

                }

        });

        */

​

        string json = JsonConvert.SerializeObject(fin, Formatting.Indented);

        Console.WriteLine(json);

    }

​

    public class FechaTurno

    {

        public DateTime Fecha { get; set; }

        public List<TurnoPersonas> Turno { get; set; }

    }

​

    public class TurnoPersonas

    {

        public string Turno { get; set; }

        public List<string> Personas { get; set; }

    }

    public class Personas

    {

        public string Identificacion { get; set; }

        public string Nombre { get; set; }

    }

    public class Persona

    {

        public string Name { get; set; }

        public string Turno { get; set; }

        public DateTime Dates { get; set; }

    }

}