using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Text.Json.Serialization;
using System.Threading.Tasks;
using gehGassiApp.Domain.Base;
using gehGassiApp.Domain.Common;

namespace gehGassiApp.Domain.Messages
{
    /// <summary>
    /// Repräsentiert eine Konversation zwischen 2 Benutzern
    /// </summary>
    public class Conversation : SyncEntity
    {
        /// <summary>
        /// Ziel der Konversation - UserId
        /// </summary>
        [Required]
        [MaxLength(128)]
        [JsonPropertyName("recipient")]
        public string Recipient { get; set; }

        /// <summary>
        /// Typ des Empfängers. DogOwner oder DogWalker
        /// </summary>
        [JsonPropertyName("receipientType")]
        public AppUserType ReceipientType { get; set; }

        /// <summary>
        /// Name des Addressaten
        /// </summary>
        [MaxLength(300)]
        [JsonPropertyName("recipientName")]
        public string RecipientName { get; set; }

        /// <summary>
        /// Kürzel des Addressaten
        /// </summary>
        [MaxLength(2)]
        [JsonPropertyName("recipientShort")]
        public string RecipientShort { get; set; }

        /// <summary>
        /// Foto
        /// </summary>
        [JsonPropertyName("recipientPhoto")]
        public string RecipientPhoto { get; set; }

        /// <summary>
        /// Id der letzten Nachricht
        /// </summary>
        [MaxLength(128)]
        [JsonPropertyName("lastMessageId")]
        public string LastMessageId { get; set; }

        /// <summary>
        /// Vorschautext der letzten Nachricht
        /// </summary>
        [JsonPropertyName("lastMessagePreview")]
        public string LastMessagePreview { get; set; }

        /// <summary>
        /// Gibt an ob ungelesene Nachrichten enthalten sind
        /// </summary>
        [JsonPropertyName("hasUnreadMessages")]
        public bool HasUnreadMessages { get; set; }

        /// <summary>
        /// Wann wurde die Konversation erstellt
        /// </summary>
        [Required]
        [JsonPropertyName("created")]
        public DateTimeOffset Created { get; set; }

        /// <summary>
        /// Vorname + Nachname erster Buchstabe + Punkt, oder nur Vorname wenn kein Nachname
        /// </summary>
        [NotMapped]
        [JsonIgnore]
        public string RecipientFullNameShort
        {
            get
            {
                if (!string.IsNullOrWhiteSpace(RecipientName))
                {
                    var parts = RecipientName.Split(" ");
                    var firstName = parts[0];
                    var lastName = string.Empty;
                    if (parts.Length > 1)
                        lastName = parts[1];
                    return string.IsNullOrWhiteSpace(lastName) ? firstName : $"{firstName} {lastName[..1]}.";
                }
                return string.Empty;
            }
        }
    }

    
}