using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace MoneyMap.Models;

public enum AccountType
{
    Checking,
    Savings,
    Other
}

public class Account
{
    [Key]
    public int Id { get; set; }

    [Required]
    [MaxLength(100)]
    public string Institution { get; set; } = string.Empty; // e.g., "Chase", "Wells Fargo"

    [Required]
    [MaxLength(4)]
    public string Last4 { get; set; } = string.Empty; // Last 4 digits of account number

    [Required]
    [MaxLength(100)]
    public string Owner { get; set; } = string.Empty; // Account holder name

    public AccountType AccountType { get; set; } = AccountType.Checking;

    [MaxLength(50)]
    public string? Nickname { get; set; } // Optional friendly name like "Emergency Fund"

    // Navigation properties
    public ICollection<Card> Cards { get; set; } = new List<Card>(); // Cards linked to this account
    public ICollection<Transaction> Transactions { get; set; } = new List<Transaction>();
    public ICollection<Transfer> SourceTransfers { get; set; } = new List<Transfer>();
    public ICollection<Transfer> DestinationTransfers { get; set; } = new List<Transfer>();

    [NotMapped]
    public string DisplayLabel => string.IsNullOrEmpty(Nickname)
        ? $"{Institution} {Last4} ({AccountType})"
        : $"{Nickname} ({Institution} {Last4})";
}