using NexusReader.Application.Queries.Graph;

namespace NexusReader.UI.Shared.Services;

public sealed class KnowledgeGraphService : IKnowledgeGraphService
{
    public GraphDataDto? CurrentGraphData { get; private set; }
    public string? ActiveNodeId { get; private set; }
    public bool IsLoading { get; private set; }

    public event Action? OnGraphUpdated;
    public event Action<string>? OnActiveNodeChanged;
    public event Action<bool>? OnLoadingChanged;

    public void UpdateGraph(GraphDataDto newData)
    {
        CurrentGraphData = newData;
        IsLoading = false;
        OnLoadingChanged?.Invoke(false);
        OnGraphUpdated?.Invoke();
    }

    public void SetActiveNode(string nodeId)
    {
        if (ActiveNodeId == nodeId) return;
        ActiveNodeId = nodeId;
        OnActiveNodeChanged?.Invoke(nodeId);
    }

    public void SetLoading(bool isLoading)
    {
        IsLoading = isLoading;
        OnLoadingChanged?.Invoke(isLoading);
    }

    public void Clear()
    {
        CurrentGraphData = null;
        ActiveNodeId = null;
        IsLoading = false;
        OnGraphUpdated?.Invoke();
    }
}