using CommunityToolkit.Mvvm.ComponentModel;
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;

namespace gehGassiApp.Domain.Common
{
    /// <summary>
    /// Repräsentiert eine Adresse
    /// </summary>
    public class Address : ObservableObject
    {
        private string _addressLine1;
        private string _addressLine2;
        private string _city;
        private string _zip;
        private string _state;
        private string _countryCode;

        /// <summary>
        /// Optionale Adresszeile 1
        /// </summary>
        [MaxLength(100)]
        [JsonPropertyName("addressLine1")]
        public string AddressLine1
        {
            get => _addressLine1;
            set
            {
                _addressLine1 = value;
                OnPropertyChanged(AddressLine1);
                OnPropertyChanged(nameof(Preview));
            }
        }

        /// <summary>
        /// Optionale Adresszeile 2
        /// </summary>
        [MaxLength(100)]
        [JsonPropertyName("addressLine2")]
        public string AddressLine2
        {
            get => _addressLine2;
            set
            {
                _addressLine2 = value;
                OnPropertyChanged(AddressLine2);
                OnPropertyChanged(nameof(Preview));
            }
        }

        /// <summary>
        /// Optional: Stadt / Ort
        /// </summary>
        [MaxLength(100)]
        [JsonPropertyName("city")]
        public string City
        {
            get => _city;
            set
            {
                _city = value;
                OnPropertyChanged(City);
                OnPropertyChanged(nameof(Preview));
            }
        }

        /// <summary>
        /// Optinale PLZ
        /// </summary>
        [MaxLength(20)]
        [JsonPropertyName("zip")]
        public string Zip
        {
            get => _zip;
            set
            {
                _zip = value;
                OnPropertyChanged(nameof(Zip));
                OnPropertyChanged(nameof(Preview));
            }
        }

        /// <summary>
        /// Bundesland / Staat
        /// </summary>
        [MaxLength(100)]
        [JsonPropertyName("state")]
        public string State
        {
            get => _state;
            set
            {
                _state = value;
                OnPropertyChanged(nameof(State)); 
                OnPropertyChanged(nameof(Preview));
            }
        }

        /// <summary>
        /// ISO2 Ländercode
        /// </summary>
        [Required]
        [MaxLength(2)]
        [JsonPropertyName("countryCode")]
        public string CountryCode
        {
            get => _countryCode;
            set
            {
                _countryCode = value;
                OnPropertyChanged(nameof(CountryCode));
                OnPropertyChanged(nameof(Preview));
            }
        }

        /// <summary>
        /// Anzeige der Adresse als ein String
        /// </summary>
        [NotMapped]
        [JsonIgnore]
        public string Preview
        {
            get
            {
                var line = string.Empty;
                if (!string.IsNullOrWhiteSpace(AddressLine1))
                {
                    line += $"{AddressLine1}";
                }
                if (!string.IsNullOrWhiteSpace(AddressLine2))
                {
                    if (!string.IsNullOrWhiteSpace(line))
                        line += ", ";
                    line += $"{AddressLine2}";
                }
                if (!string.IsNullOrWhiteSpace(Zip))
                {
                    if (!string.IsNullOrWhiteSpace(line))
                        line += ", ";
                    line += $"{Zip}";
                }
                if (!string.IsNullOrWhiteSpace(City))
                {
                    if (!string.IsNullOrWhiteSpace(line))
                        line += ", ";
                    line += $"{City}";
                }

                return line;
            }
        }

        /// <summary>
        /// Anzeige Ort mit Komma für die Detailansicht.
        /// Wenn ort, dann Ort, sonst leer
        /// </summary>
        [NotMapped]
        [JsonIgnore]
        public string CityWithComma
        {
            get
            {
                if(!string.IsNullOrWhiteSpace(City))
                    return $"{City}, ";
                return string.Empty;
            }
        }

        /// <summary>
        /// Klonen der Adresse
        /// </summary>
        /// <returns>Addresse</returns>
        public Address Clone()
        {
            var clonedAddress = new Address()
            {
                AddressLine1 = AddressLine1,
                AddressLine2 = AddressLine2,
                Zip = Zip,
                City = City,
                State = State,
                CountryCode = CountryCode
            };
            return clonedAddress;
        }
    }
}