using System;
using System.ComponentModel.DataAnnotations;

namespace trakker.Models
{
    public class Project
    {
        [Key]
        public string ProjectId { get; set; } = string.Empty;

        [Required]
        public string ClientId { get; set; } = string.Empty;

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

        [MaxLength(1000)]
        public string? Description { get; set; }

        public DateOnly? StartDate { get; set; }

        public DateOnly? EndDate { get; set; }

        [Range(0, double.MaxValue)]
        public decimal Budget { get; set; } = 0;

        public ProjectStatus Status { get; set; } = ProjectStatus.Active;

        [Range(0, double.MaxValue)]
        public decimal? HourlyRate { get; set; }

        [MaxLength(2000)]
        public string? Notes { get; set; }

        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;

        public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;

        // Optional navigation property (for Entity Framework Core)
        public Client? Client { get; set; }

        // Helper method
        public void UpdateTimestamp()
        {
            UpdatedAt = DateTime.UtcNow;
        }
    }

    public enum ProjectStatus
    {
        Active = 0,
        OnHold = 1,
        Completed = 2,
        Cancelled = 3
    }
}