#pragma once

#include "hecl/Database.hpp"
#include "Space.hpp"

namespace urde {

/** Combines a ProjectPath with actively used Space references
 *
 *  This class is intended to be heap-allocated in a hierarchical mapping, so the entire tree
 *  of resources is available in-memory to systems that need it. Refreshes of the index will
 *  continue to use existing allocations that haven't been deleted.
 *
 *  The key purpose of this class is to centrally register observer-nodes for resources that
 *  are updated via editing, or external file changes.
 */
class Resource {
public:
  using ProjectDataSpec = hecl::Database::Project::ProjectDataSpec;

private:
  hecl::ProjectPath m_path;
  Space::Class m_defaultClass = Space::Class::None;
  // EditorSpace* m_editingSpace = nullptr;
  std::vector<ViewerSpace*> m_viewingSpaces;

public:
  static Space::Class DeduceDefaultSpaceClass(const hecl::ProjectPath& path);
  explicit Resource(hecl::ProjectPath&& path)
  : m_path(std::move(path)), m_defaultClass(DeduceDefaultSpaceClass(m_path)) {}
  const hecl::ProjectPath& path() const { return m_path; }
};

/** Provides centralized hierarchical lookup and ownership of Resource nodes */
class ResourceTree {
public:
  struct Node {
    std::map<hecl::ProjectPath, std::unique_ptr<Node>> m_subnodes;
    std::map<hecl::ProjectPath, std::unique_ptr<Resource>> m_resources;
  };

private:
  std::unique_ptr<Node> m_rootNode;
};

} // namespace urde
