using BankDataModels.Models;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using BankContracts.BindingModels;
using BankContracts.ViewModels;

namespace BankDatabaseImplement.Models
{
    public class Program : IProgramModel
    {
        public int Id { get; set; }
        [Required]
        public string ProgramName { get; set; } = string.Empty;
        [Required]
        public double InterestRate { get; set; }
        [ForeignKey("ProgramId")]
        public virtual List<ProgramCurrency> Currencies { get; set; } = new();
        [ForeignKey("ProgramId")]
        public virtual List<ClientProgram> Clients { get; set; } = new();
        [ForeignKey("ProgramId")]
        public virtual List<Term> Terms { get; set; } = new();
        private Dictionary<int, ICurrencyModel>?
            _programCurrencies
        { get; set; } = null;
        [NotMapped]
        public Dictionary<int, ICurrencyModel> ProgramCurrencies
        {
            get
            {
                if (_programCurrencies == null)
                {
                    _programCurrencies = Currencies.ToDictionary(
                        x => x.CurrencyId,
                        x => (x.Currency as ICurrencyModel)
                    );
                }
                return _programCurrencies;
            }
        }
        public static Program? Create(ProgramBindingModel model)
        {
            if (model == null)
                return null;
            return new Program
            {
                Id = model.Id,
                ProgramName = model.ProgramName,
                InterestRate = model.InterestRate,
            };
        }
        public void Update(ProgramBindingModel model)
        {
            if (model == null)
                return;
            Id = model.Id;
            ProgramName = model.ProgramName;
            InterestRate = model.InterestRate;
        }
        public ProgramViewModel GetViewModel => new()
        {
            Id = Id,
            ProgramName = ProgramName,
            InterestRate = InterestRate,
        };
    }
}