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

namespace RobotNet10.MapManager.Data;

/// <summary>
/// Edge entity - Paths between nodes
/// Maps to VDMA LIF: layouts[].edges[]
/// </summary>
[Table("Edges")]
public class Edge
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public Guid Id { get; set; }

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

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

    /// <summary>
    /// Start node reference (VDMA LIF: startNodeId) - Required
    /// </summary>
    [Required]
    public Guid StartNodeId { get; set; }

    /// <summary>
    /// End node reference (VDMA LIF: endNodeId) - Required
    /// </summary>
    [Required]
    public Guid EndNodeId { get; set; }

    /// <summary>
    /// Edge name - Extension field (NOT in VDMA LIF)
    /// For UI/display purposes only
    /// </summary>
    [StringLength(256)]
    public string? EdgeName { get; set; }

    /// <summary>
    /// Edge description - Extension field (NOT in VDMA LIF)
    /// For UI/display purposes only
    /// </summary>
    public string? EdgeDescription { get; set; }

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

    [ForeignKey(nameof(StartNodeId))]
    public virtual Node StartNode { get; set; } = null!;

    [ForeignKey(nameof(EndNodeId))]
    public virtual Node EndNode { get; set; } = null!;

    public virtual ICollection<EdgeVehicleProperty> VehicleProperties { get; set; } = new List<EdgeVehicleProperty>();
}