h-school/src/HSchool.Content/PromptContribution.cs

namespace HSchool.Content;

/// <summary>One LoRA or embedding a scene def may add to a portrait. Empty name is ignored.</summary>
public sealed class PromptLoraRef
{
    public string Name { get; init; } = "";

    public float Weight { get; init; } = 1f;
}

/// <summary>
/// Optional portrait-prompt fragment on a thing, room, yard or precipitation. Missing or empty
/// means the def is silent — a chair does not name itself in the prompt.
/// </summary>
public sealed class PromptContribution
{
    public string Positive { get; init; } = "";

    public string Negative { get; init; } = "";

    public float Weight { get; init; } = 1f;

    public IReadOnlyList<PromptLoraRef> PositiveLoras { get; init; } = [];

    public IReadOnlyList<PromptLoraRef> NegativeLoras { get; init; } = [];

    public IReadOnlyList<PromptLoraRef> PositiveEmbeddings { get; init; } = [];

    public IReadOnlyList<PromptLoraRef> NegativeEmbeddings { get; init; } = [];

    public bool IsSilent =>
        string.IsNullOrWhiteSpace(Positive)
        && string.IsNullOrWhiteSpace(Negative)
        && !HasNamed(PositiveLoras)
        && !HasNamed(NegativeLoras)
        && !HasNamed(PositiveEmbeddings)
        && !HasNamed(NegativeEmbeddings);

    private static bool HasNamed(IReadOnlyList<PromptLoraRef> entries)
    {
        foreach (var entry in entries)
        {
            if (!string.IsNullOrWhiteSpace(entry.Name))
            {
                return true;
            }
        }

        return false;
    }
}

/// <summary>Clear / rain / snow fragments on a climate preset. Outdoor portraits pick one.</summary>
public sealed class ClimatePromptSet
{
    public PromptContribution? Clear { get; init; }

    public PromptContribution? Rain { get; init; }

    public PromptContribution? Snow { get; init; }
}