using Godot;
using System.Collections.Generic;

public class IfNode : ProgramNode
{
	public Item selectedItem;
	public int amount;
	public string comparator;
	public IfNode()
	{
		DisplayText = "If";
	}
	public override NodeResult Execute(Robot robot, double delta)
	{
		if (selectedItem == null)
		{
			lastExecutionMessage = "No Item selected";
			return NodeResult.FAILURE;
		}

		bool isConditionFulfilled = DetermineCondition();
		return isConditionFulfilled? NodeResult.SUCCESS : NodeResult.CONDITIONFALSE;
	}

	private bool DetermineCondition()
	{
		int inventoryAmount = GameData.inventory.GetItemAmount(selectedItem.data.Id);
		switch (comparator)
		{
			case "is bigger than":
				return inventoryAmount > amount;
			case "is less than":
				return inventoryAmount < amount;
			case "is not":
				return inventoryAmount != amount;
			case "is less than or equal to":
				return inventoryAmount <= amount;
			case "is bigger than or equal to":
				return inventoryAmount >= amount;
			default:
				return inventoryAmount == amount;
		}
	}

	public override ProgramNode Duplicate()
	{
		IfNode duplicate = new IfNode()
		{
			selectedItem = selectedItem,
			amount = amount,
			comparator = comparator
		};
		return duplicate;
	}

	public override string Save()
	{
		return $"Name: {DisplayText}, Item: {(selectedItem == null ? "Empty" : selectedItem.data.Id)}, Comparator: {comparator}, Amount: {amount}";
	}

	public override void SetNextNode(
		List<Godot.Collections.Dictionary> connections,
		Dictionary<StringName, ProgramNode> availableNodes
	)
	{
		nextNode = null;
		NegativeNode = null;

		foreach (Godot.Collections.Dictionary connection in connections)
		{
			int port = (int)connection["from_port"];
			ProgramNode connectedNode = GetConnectedNode(connection, availableNodes);
			if (port == 0)
			{
				nextNode = connectedNode;
			}
			else
			{
				NegativeNode = connectedNode;
			}
		}
	}
}