using Godot;
using System.Collections.Generic;

public class IfNode : ProgramNode
{
	public Item selectedItem;
	public int amount;
	public string comparator;
	public IfNode()
	{
		DisplayText = "If";
		TooltipText = "Checks an inventory condition once. If the condition is true, execution follows the main output (Top slot); otherwise it follows the negative output. (Bottom slot)";
	}

	public override NodeResult Execute(Robot robot, double delta)
	{
		if (selectedItem == null)
		{
			lastExecutionMessage = "No Item selected";
			return NodeResult.FAILURE;
		}

		if (comparator == null)
		{
			lastExecutionMessage = "No comparator selected";
			return NodeResult.FAILURE;
		}

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

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