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

namespace Lagerbestand.Models;

/// <summary>
/// Tire position in a stack
/// </summary>
public enum TirePosition
{
    FrontLeft = 0,
    FrontRight = 1,
    RearLeft = 2,
    RearRight = 3
}

/// <summary>
/// Tire condition rating
/// </summary>
public enum TireCondition
{
    Excellent = 0,  // Like new
    Good = 1,       // Normal wear
    Fair = 2,       // Noticeable wear but safe
    Poor = 3,       // Should be replaced soon
    Critical = 4    // Unsafe, needs replacement
}

/// <summary>
/// Represents an individual tire within a tire stack.
/// Allows detailed tracking of each tire's condition.
/// A TireStack always has exactly 4 TireItems.
/// </summary>
public class TireItem
{
    [Key]
    public Guid Id { get; set; } = Guid.NewGuid();

    /// <summary>
    /// The tire stack this item belongs to
    /// </summary>
    public Guid TireStackId { get; set; }

    [ForeignKey(nameof(TireStackId))]
    public TireStack? TireStack { get; set; }

    /// <summary>
    /// Position of this tire in the stack
    /// </summary>
    public TirePosition Position { get; set; }

    /// <summary>
    /// Individual tread depth for this tire in mm
    /// </summary>
    [Range(0, 10)]
    public decimal? TreadDepth { get; set; }

    /// <summary>
    /// Condition rating for this tire
    /// </summary>
    public TireCondition Condition { get; set; } = TireCondition.Good;

    /// <summary>
    /// Any damage or issues noted
    /// </summary>
    [MaxLength(500)]
    public string? DamageNotes { get; set; }

    /// <summary>
    /// Individual DOT code if different from stack
    /// </summary>
    [MaxLength(20)]
    public string? DotCode { get; set; }

    /// <summary>
    /// Photo filename for tire condition documentation
    /// </summary>
    [MaxLength(500)]
    public string? PhotoFileName { get; set; }

    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;

    public DateTime? UpdatedAt { get; set; }

    /// <summary>
    /// Position display text in German
    /// </summary>
    [NotMapped]
    public string PositionText => Position switch
    {
        TirePosition.FrontLeft => "Vorne Links",
        TirePosition.FrontRight => "Vorne Rechts",
        TirePosition.RearLeft => "Hinten Links",
        TirePosition.RearRight => "Hinten Rechts",
        _ => "Unbekannt"
    };

    /// <summary>
    /// Condition display text in German
    /// </summary>
    [NotMapped]
    public string ConditionText => Condition switch
    {
        TireCondition.Excellent => "Sehr gut",
        TireCondition.Good => "Gut",
        TireCondition.Fair => "Ausreichend",
        TireCondition.Poor => "Mangelhaft",
        TireCondition.Critical => "Kritisch",
        _ => "Unbekannt"
    };
}