using System.ComponentModel.DataAnnotations;

namespace Fitness_core_BE.DTOs.Booking
{
    public class CreateMemberBookingRequest
    {
        [Required]
        public Guid FacilitySessionId { get; set; }
    }

    public class CreateGuestBookingRequest
    {
        [Required]
        public Guid FacilitySessionId { get; set; }

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

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

        /// <summary>Optional link to an existing registered customer (TenantCustomerLinkId) when
        /// staff recognizes the walk-in as an already-registered member -- purely for
        /// identification/auto-fill, doesn't change payment/membership handling at all.</summary>
        public Guid? CustomerId { get; set; }
    }

    public class CreateAdhocBookingRequest
    {
        [Required]
        public Guid FacilityId { get; set; }

        [Required]
        public DateTime StartTime { get; set; }

        [Required, Range(1, int.MaxValue, ErrorMessage = "DurationMinutes must be at least 1")]
        public int DurationMinutes { get; set; }

        public int? PartySize { get; set; }
    }

    public class CreateGuestAdhocBookingRequest
    {
        [Required]
        public Guid FacilityId { get; set; }

        [Required]
        public DateTime StartTime { get; set; }

        [Required, Range(1, int.MaxValue, ErrorMessage = "DurationMinutes must be at least 1")]
        public int DurationMinutes { get; set; }

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

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

        public int? PartySize { get; set; }

        /// <summary>Overrides the facility's own PricePerHour for this booking's charge only --
        /// the FE pre-fills this from the facility but lets staff adjust it.</summary>
        [Range(typeof(decimal), "0", "79228162514264337593543950335", ErrorMessage = "PricePerHour cannot be negative")]
        public decimal? PricePerHour { get; set; }

        /// <summary>Optional link to an existing registered customer -- see
        /// CreateGuestBookingRequest.CustomerId.</summary>
        public Guid? CustomerId { get; set; }
    }

    public class MarkGuestBookingPaidRequest
    {
        [Required]
        public Guid BookingId { get; set; }

        [Required]
        [Range(0.01, double.MaxValue, ErrorMessage = "AmountCharged must be greater than zero")]
        public decimal AmountCharged { get; set; }

        /// <summary>"Cash" | "Bank". Defaults to "Cash" if omitted.</summary>
        public string? PaymentMethod { get; set; }
    }

    /// <summary>Body for POST .../complete. Only required when the booking is a guest booking
    /// still Unpaid -- see BookingService.CompleteBooking. Ignored otherwise (member bookings,
    /// or a guest booking already Paid).</summary>
    public class CompleteBookingRequest
    {
        public bool? MarkPaid { get; set; }
        public decimal? AmountCollected { get; set; }
        /// <summary>"Cash" | "Bank". Defaults to "Cash" if omitted.</summary>
        public string? PaymentMethod { get; set; }
    }

    public class CheckInBookingRequest
    {
        [Required]
        public string OtpCode { get; set; } = string.Empty;

        /// <summary>Picked from the club's managed RFID tag pool (GET api/client/rfid-tags?
        /// status=Available) -- never free-typed. Required in practice for an AdHoc booking's
        /// check-in; optional for Scheduled bookings that don't hand out a physical tag.</summary>
        public Guid? RfidTagId { get; set; }
    }

    public class CancelBookingRequest
    {
        [Required]
        public Guid BookingId { get; set; }
    }

    public class ReassignBookingRequest
    {
        public string? GuestName { get; set; }
        public string? GuestPhone { get; set; }
    }

    /// <summary>Exactly one shape applies, matching the booking's current BookingMode: AdHoc
    /// bookings move within the SAME facility to a new StartTime/DurationMinutes; Scheduled
    /// bookings move to a different FacilitySession (also on the same facility). Only allowed
    /// while the booking is still Confirmed, and only onto a slot with room -- re-runs the same
    /// availability check as creation, excluding the booking's own current slot.</summary>
    public class RescheduleBookingRequest
    {
        // AdHoc reschedule.
        public DateTime? StartTime { get; set; }
        [Range(1, int.MaxValue, ErrorMessage = "DurationMinutes must be at least 1")]
        public int? DurationMinutes { get; set; }

        // Scheduled reschedule.
        public Guid? FacilitySessionId { get; set; }
    }
}