using System;
using System.Reflection;
using Godot;
using Microsoft.Extensions.DependencyInjection;

namespace GodotHostTest.GodotDI;

public partial class Scope : Node
{
    [Export] protected Node?[] InjectedNodes = [];

    internal void ResolveInjectedNodes(IServiceProvider serviceProvider)
    {
        // resolve the injected nodes
        // TODO: move to source generator, make it the only way for injection
        foreach (var node in InjectedNodes)
        {
            if (node == null) continue;
            foreach (var field in node.GetType()
                         .GetFields(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
            {
                if (field.GetCustomAttribute<InjectAttribute>() == null) continue;
                var fieldType = field.FieldType;
                var service = serviceProvider.GetRequiredService(fieldType);
                field.SetValue(node, service);
            }
        }
    }
}