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

namespace RobotNet10.MapManager.Data;

/// <summary>
/// Station entity - Interaction points for vehicles
/// Maps to VDMA LIF: layouts[].stations[]
/// </summary>
[Table("Stations")]
public class Station
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid Id { get; set; }

    /// <summary>
    /// Parent level reference
    /// </summary>
    [Required]
    public Guid LevelId { get; set; }

    /// <summary>
    /// Station identifier (VDMA LIF: stationId) - Required
    /// Unique within level
    /// </summary>
    [Required]
    [StringLength(128)]
    public string StationId { get; set; } = string.Empty;

    /// <summary>
    /// Station name (VDMA LIF: stationName) - Optional
    /// </summary>
    [StringLength(256)]
    public string? StationName { get; set; }

    /// <summary>
    /// Station description (VDMA LIF: stationDescription) - Optional
    /// </summary>
    public string? StationDescription { get; set; }

    /// <summary>
    /// Station height in meters (VDMA LIF: stationHeight) - Optional
    /// </summary>
    public double? StationHeight { get; set; }

    /// <summary>
    /// X coordinate in meters (VDMA LIF: stationPosition.x) - Required
    /// </summary>
    [Required]
    public double X { get; set; }

    /// <summary>
    /// Y coordinate in meters (VDMA LIF: stationPosition.y) - Required
    /// </summary>
    [Required]
    public double Y { get; set; }

    /// <summary>
    /// Theta orientation in radians (VDMA LIF: stationPosition.theta) - Optional
    /// Range: [-Pi ... Pi]
    /// </summary>
    public double? Theta { get; set; }

    // Navigation properties
    [ForeignKey(nameof(LevelId))]
    public virtual LayoutLevel Level { get; set; } = null!;

    public virtual ICollection<StationInteractionNode> InteractionNodes { get; set; } = new List<StationInteractionNode>();
}