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

namespace RobotNet10.MapManager.Data;

/// <summary>
/// Layout level entity - Represents floors/levels within a version
/// Maps to VDMA LIF: layouts[].layoutLevelId
/// </summary>
[Table("LayoutLevels")]
public class LayoutLevel
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid Id { get; set; }

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

    /// <summary>
    /// Level identifier (VDMA LIF: layoutLevelId)
    /// Example: "floor_1", "floor_2", "basement"
    /// </summary>
    [Required]
    [StringLength(64)]
    public string LayoutLevelId { get; set; } = string.Empty;

    /// <summary>
    /// Display order (for sorting in UI)
    /// Example: Basement=-1, Floor1=0, Floor2=1
    /// </summary>
    [Required]
    public int LevelOrder { get; set; } = 0;

    // Navigation properties
    [ForeignKey(nameof(VersionId))]
    public virtual LayoutVersion Version { get; set; } = null!;

    public virtual ICollection<Node> Nodes { get; set; } = new List<Node>();
    public virtual ICollection<Edge> Edges { get; set; } = new List<Edge>();
    public virtual ICollection<Station> Stations { get; set; } = new List<Station>();

    /// <summary>
    /// Editor-specific settings (UI extensions, not part of VDMA LIF)
    /// </summary>
    public virtual LayoutLevelEditorSettings? EditorSettings { get; set; }
}