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

namespace Fitness_core_BE.Models
{
    /// <summary>A physical area of the club (e.g. "Pool Area", "Indoor Gym", "Court 1") that can
    /// both be booked (Booking/FacilitySession below) and fitted with its own fingerprint/face
    /// terminal for membership-plan access scoping (AccessDevice.FKFacilityId,
    /// CustomerPlanFacility). Merged from the formerly-separate Facility (bookable capacity) and
    /// Place (access zone) concepts -- see the booking redesign plan for the migration that
    /// carried Place's rows over reusing this table's original PlaceId values as FacilityId.</summary>
    public class Facility
    {
        [Key]
        public Guid FacilityId { get; set; }

        public Guid FKClientId { get; set; }
        [ForeignKey(nameof(FKClientId))]
        public Client Client { get; set; }

        [MaxLength(128)]
        public string Name { get; set; } = string.Empty;

        /// <summary>Staff pre-creates fixed-time FacilitySessions (classes) that many bookings
        /// share one capacity pool against. Independent of SupportsBooking -- both can be true,
        /// e.g. a court that hosts a scheduled class AND accepts ad-hoc walk-in bookings outside
        /// class hours.</summary>
        public bool SupportsClasses { get; set; } = true;

        /// <summary>A booking can claim one of NumberOfUnits identical units directly for an
        /// arbitrary time window, no pre-created session needed (courts/pool). At least one of
        /// SupportsClasses/SupportsBooking must be true.</summary>
        public bool SupportsBooking { get; set; } = false;

        [MaxLength(500)]
        public string? Description { get; set; }

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

        /// <summary>Number of identical, independently-bookable units when SupportsBooking (e.g.
        /// 3 for "3 courts") -- availability is this minus overlapping non-cancelled/
        /// non-completed WalkIn bookings in the requested window.</summary>
        public int NumberOfUnits { get; set; } = 1;

        /// <summary>Hourly rate used to compute a guest WalkIn booking's suggested AmountCharged
        /// (PricePerHour * duration-in-hours) at creation time.</summary>
        public decimal PricePerHour { get; set; } = 0m;

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