namespace BlueLaminate.EFCore.Entities;

public class Skin
{
    public int Id { get; set; }
    public int WeaponId { get; set; }
    public Weapon Weapon { get; set; } = null!;

    /// <summary>Stable id from the CSGO-API catalogue, e.g. "skin-e757fd7191f9". The natural key.</summary>
    public string Slug { get; set; } = null!;

    // CSFloat/CS item indexes, sourced from the static catalogue (weapon.weapon_id
    // and paint_index). Together they identify a skin on CSFloat and let market
    // listings join back to this catalogue row. Nullable until a sync populates
    // them, since older catalogue rows predate these columns.
    public int? DefIndex { get; set; }
    public int? PaintIndex { get; set; }

    // When the catalogue-driven listing sweep last fully covered this skin. The
    // sweep processes least-recently-swept skins first (nulls = never swept), so
    // capped runs chain across the whole catalogue and the stalest data refreshes
    // first. Null until the first sweep reaches this skin.
    public DateTimeOffset? ListingsSweptAt { get; set; }

    public string Name { get; set; } = null!;
    public string Rarity { get; set; } = null!;
    public string? Description { get; set; }
    public string? ImageUrl { get; set; }

    public bool StatTrakAvailable { get; set; }
    public bool SouvenirAvailable { get; set; }

    /// <summary>Every collection and container this skin originates from.</summary>
    public ICollection<Collection> Collections { get; set; } = new List<Collection>();

    // Null when the catalogue gives no wear range (e.g. vanilla knives). Callers
    // must treat null as "unknown", not as a full 0.0–1.0 range.
    public decimal? FloatMin { get; set; }
    public decimal? FloatMax { get; set; }

    // Computed in the database: float_min = 0.0 AND float_max = 1.0; null while the
    // bounds are unknown. A skin with a capped float range behaves differently in
    // tradeup calculations.
    public bool? TrueFloat { get; private set; }

    public ICollection<SkinCondition> Conditions { get; set; } = new List<SkinCondition>();
    public ICollection<SkinInstance> Instances { get; set; } = new List<SkinInstance>();
    public ICollection<PriceHistory> PriceHistories { get; set; } = new List<PriceHistory>();
}