using NodeDev.Core.Connections;

using NodeDev.Core.Types;

namespace NodeDev.Core.Nodes

{

/// <summary>

/// Nodes that want to implement a normal flow should inherit from this class.

/// It'll automatically add a input exec and output exec.

/// </summary>

public abstract class NormalFlowNode : Node

{

public override string TitleColor => "lightblue";

public override bool IsFlowNode => true;

public override string GetExecOutputPathId(string pathId, Connection execOutput)

{

if (execOutput != Outputs[0])

throw new InvalidOperationException("Invalid exec output connection.");

return pathId; // no need to change the pathId, we're just flowing through like a->b->c

}

public override bool DoesOutputPathAllowDeadEnd(Connection execOutput) => false; // A normal flow node should not allow dead ends, unless a parent allowed it.

public override bool DoesOutputPathAllowMerge(Connection execOutput) => throw new NotImplementedException(); // Since there is only one exec, it doesn't make sense to talk about merging, nothing to merge after all.

protected NormalFlowNode(Graph graph, string? id = null) : base(graph, id)

{

Inputs.Add(new("Exec", this, TypeFactory.ExecType));

Outputs.Add(new("Exec", this, TypeFactory.ExecType));

}

}

}