using System.ComponentModel.DataAnnotations;

namespace Fitness_core_BE.DTOs.CustomerPlan
{
    public class CreateCustomerPlanRequest
    {
        [Required]
        public string PlanName { get; set; } = string.Empty;

        public string? PlanDescription { get; set; }

        [Required]
        [Range(0, double.MaxValue, ErrorMessage = "Plan price must be a positive value")]
        public decimal PlanPrice { get; set; }

        public bool? HasOnboardingFee { get; set; }

        [Range(0, double.MaxValue, ErrorMessage = "Onboarding fee must be zero or greater")]
        public decimal? OnboardingFeeAmount { get; set; }

        /// <summary>Required when DurationMode is "Rolling" (validated in the service).</summary>
        [Range(1, int.MaxValue, ErrorMessage = "Duration must be at least 1 day")]
        public int? DurationInDays { get; set; }

        /// <summary>"Individual" (default) | "Group".</summary>
        public string? PlanScope { get; set; }

        /// <summary>Required >= 2 when PlanScope is "Group".</summary>
        public int? MemberLimit { get; set; }

        /// <summary>"Rolling" (default) | "FixedRange".</summary>
        public string? DurationMode { get; set; }

        public DateTime? ValidFrom { get; set; }
        public DateTime? ValidTo { get; set; }

        public bool? AllowSplitPayments { get; set; }

        /// <summary>Number of mostly-equal installments; defaults to plan duration in months when split is enabled.</summary>
        public int? InstallmentCount { get; set; }

        /// <summary>Null (default) = unlimited-access plan. A number = this plan grants that
        /// many bookable Facility sessions per billing cycle (e.g. "4 pool sessions a month").</summary>
        [Range(1, int.MaxValue, ErrorMessage = "SessionsPerCycle must be at least 1 when set")]
        public int? SessionsPerCycle { get; set; }

        /// <summary>"NoRollover" (default) | "GracePeriod". Only meaningful when SessionsPerCycle is set.</summary>
        public string? SessionRolloverPolicy { get; set; }

        /// <summary>Required (>= 1) when SessionRolloverPolicy is "GracePeriod".</summary>
        [Range(0, int.MaxValue, ErrorMessage = "RolloverGraceDays must be zero or greater")]
        public int? RolloverGraceDays { get; set; }

        /// <summary>"Prepaid" (default, pay before the cycle starts) | "Postpaid" (use first,
        /// invoice at cycle end, access suspended if unpaid past due). Asked once per package.</summary>
        public string? BillingTiming { get; set; }

        /// <summary>Places this plan grants access to. Null/omitted or empty = unrestricted
        /// (reaches every active access device, today's behavior).</summary>
        public List<Guid>? PlaceIds { get; set; }

        /// <summary>Set only by the Classes tab's "Manage Plan" action -- links this new plan to
        /// one class via CustomerPlanClass. Omitted for an ordinary gym plan.</summary>
        public Guid? FacilityClassId { get; set; }

        /// <summary>Only meaningful when FacilityClassId is set -- whether this class plan also
        /// grants general gym-floor access ("class + gym" as one product) instead of class-only.
        /// Defaults to false (class-only) when omitted.</summary>
        public bool? GrantsGymAccess { get; set; }
    }
}