using System.ComponentModel.DataAnnotations;

namespace BudgetApp.Data;

public class Salary
{
    public int Id { get; set; }

    [Required, MaxLength(200)]
    public string Name { get; set; } = string.Empty;

    public decimal Amount { get; set; }

    public RecurrenceType RecurrenceType { get; set; } = RecurrenceType.Monthly;

    public DateTime StartDate { get; set; } = DateTime.Today;

    public int AccountId { get; set; }
    public Account Account { get; set; } = default!;

    public int? CategoryId { get; set; }
    public Category? Category { get; set; }

    [Required]
    public string UserId { get; set; } = string.Empty;
    public ApplicationUser User { get; set; } = default!;

    public string GetPaydaySummary() => RecurrenceType switch
    {
        RecurrenceType.Weekly  => $"Every week on {StartDate:dddd}",
        RecurrenceType.Monthly => $"Monthly on the {GetOrdinal(StartDate.Day)}",
        RecurrenceType.Yearly  => $"Annually on {StartDate:MMMM d}",
        _                      => RecurrenceType.ToString()
    };

    private static string GetOrdinal(int day) => day switch
    {
        1 or 21 or 31 => $"{day}st",
        2 or 22        => $"{day}nd",
        3 or 23        => $"{day}rd",
        _              => $"{day}th"
    };
}