using Godot;

public partial class ResearchList : PanelContainer
{
	[Export] GraphEdit researchGraph;

	public override void _Ready()
	{
		foreach (ResearchData research in GameData.availableResearch.Values)
		{
			researchGraph.AddChild(CreateItemNode(research.Id, research.Texture));
		}
		foreach (ResearchData research in GameData.availableResearch.Values)
		{
			researchGraph.ConnectNode(
					research.Research,
					0,
					research.Id,
					0
				);
		}
	}

	public override void _Process(double delta)
	{

	}

	private GraphNode CreateItemNode(string id, string texturePath)
	{
		Vector2 viewportSize = GetViewport().GetVisibleRect().Size;
		TextureRect icon = new TextureRect
		{
			Texture = GD.Load<Texture2D>(texturePath),
			StretchMode = TextureRect.StretchModeEnum.KeepAspectCentered
		};
		//Step 1: Place the node in the visible field for the player
		Vector2 nodePosition = new Vector2(viewportSize.X  / 32, viewportSize.Y / 4);
		//Step 2: Modify position by nodeIndex
		nodePosition = nodePosition + new Vector2(GameData.availableResearch.Count * -icon.Texture.GetWidth() + researchGraph.GetChildCount() * icon.Texture.GetWidth() * 10, 0);

		GraphNode node = new GraphNode
		{
			Name = id,
			Title = id,
			PositionOffset = nodePosition
		};

		node.SetSlot(
			0,
			true,
			0,
			Colors.White,
			true,
			0,
			Colors.White
		);

		node.AddChild(icon);

		return node;
	}
}