using System.ComponentModel.DataAnnotations;

namespace Fitness_core_BE.DTOs.Facility
{
    public class CustomOccurrenceRequest
    {
        [Required]
        public DateTime StartTime { get; set; }

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

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

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

        public string? Description { get; set; }

        /// <summary>"Daily" | "Weekly" | "Monthly" | "Custom".</summary>
        [Required]
        public string RecurrenceType { get; set; } = "Weekly";

        /// <summary>"HH:mm" local time -- required unless RecurrenceType == "Custom".</summary>
        public string? StartTimeOfDay { get; set; }

        [Range(1, int.MaxValue, ErrorMessage = "DurationMinutes must be at least 1")]
        public int DurationMinutes { get; set; } = 60;

        /// <summary>Weekly only. Bit flags, Sunday = 1 through Saturday = 64.</summary>
        public int WeekDaysMask { get; set; }

        /// <summary>Monthly only. Comma-separated day-of-month list, e.g. "1,15".</summary>
        public string? MonthDays { get; set; }

        public DateTime? SeriesStartDate { get; set; }
        public DateTime? SeriesEndDate { get; set; }

        public int? Capacity { get; set; }
        public bool IsUnlimitedCapacity { get; set; }

        /// <summary>RecurrenceType == "Custom" only -- explicit occurrence windows.</summary>
        public List<CustomOccurrenceRequest>? CustomOccurrences { get; set; }
    }

    public class UpdateFacilityClassRequest
    {
        public string? Name { get; set; }
        public string? Description { get; set; }
        public string? RecurrenceType { get; set; }
        public string? StartTimeOfDay { get; set; }
        public int? DurationMinutes { get; set; }
        public int? WeekDaysMask { get; set; }
        public string? MonthDays { get; set; }
        public DateTime? SeriesStartDate { get; set; }
        public DateTime? SeriesEndDate { get; set; }
        public int? Capacity { get; set; }
        public bool? IsUnlimitedCapacity { get; set; }
        public bool? IsActive { get; set; }

        /// <summary>RecurrenceType == "Custom" only -- adds more explicit occurrences without
        /// touching existing ones (Custom has no rule to regenerate from).</summary>
        public List<CustomOccurrenceRequest>? AddCustomOccurrences { get; set; }
    }

    public class MarkNotHeldRequest
    {
        public string? Reason { get; set; }
    }
}