LinkGesture.h

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// SPDX-FileCopyrightText: 2026 Valentin Eloy
// SPDX-License-Identifier: GPL-3.0-or-later
 
#pragma once
 
#include <optional>
 
#include "Core/Levels/GridPosition.h"
#include "Core/Levels/TileType.h"

 
namespace hmi {

struct PendingLink {
    core::GridPosition cell;
    core::TileType tileType;
};

enum class LinkGestureAction {
    Ignore,          
    SetPending,      
    ReplacePending,  
    Link,            
    Unlink,          
};

struct LinkGestureDecision {
    LinkGestureAction action = LinkGestureAction::Ignore;
    core::GridPosition cell{};            
    core::GridPosition switchPosition{};  
    core::GridPosition targetPosition{};  
};

[[nodiscard]] LinkGestureDecision resolveLinkClick(std::optional<PendingLink> pending,
                                                   core::GridPosition clickedCell,
                                                   core::TileType clickedTileType,
                                                   bool alreadyLinked) noexcept;
 
}  // namespace hmi