Core_Be/Models/Facility.cs

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

namespace Fitness_core_BE.Models
{
    /// <summary>A bookable area of the club — the gym floor, the pool, a court, a class type
    /// (karate, etc). Gym-floor access itself keeps working through the existing
    /// CustomerPlan/Attendance flow unchanged; Facility/FacilitySession/Booking below are for
    /// the new capacity-limited, session-based areas (pool, courts, classes).</summary>
    public class Facility
    {
        [Key]
        public Guid FacilityId { get; set; }
        public Guid FKClientId { get; set; }
        [ForeignKey(nameof(FKClientId))]
        public Client Client { get; set; }

        public string Name { get; set; } = string.Empty;

        /// <summary>"Gym" | "Pool" | "Court" | "Class" — informational grouping for the admin
        /// UI; booking rules themselves live on FacilitySession/CustomerPlan, not on this type.</summary>
        public string FacilityType { get; set; } = "Class";

        public string? Description { get; set; }

        /// <summary>Default per-session headcount limit; a specific FacilitySession can override.</summary>
        public int DefaultCapacity { get; set; } = 1;

        public bool IsActive { get; set; } = true;
        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    }
}