resource_router.hpp

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// SPDX-FileCopyrightText: 2025 Povl Filip Sonne-Frederiksen
//
// SPDX-License-Identifier: GPL-3.0-or-later
 
#pragma once
 
#include "format_handler.hpp"
#include "path_parser.hpp"
 
#include <reusex/core/ProjectDB.hpp>
 
#include <filesystem>
#include <map>
#include <memory>
#include <string_view>
#include <vector>
 
namespace rux::database {

class ResourceRouter {
public:
  explicit ResourceRouter(std::shared_ptr<reusex::ProjectDB> db) : db_(db) {}
  virtual ~ResourceRouter() = default;

  virtual DataPayload get(const std::vector<PathComponent> &components) = 0;

  virtual void set(const std::vector<PathComponent> &components,
                   const DataPayload &data) = 0;

  virtual void del(const std::vector<PathComponent> &components) = 0;

  virtual std::vector<std::string> list() const = 0;

  std::optional<std::string> resolve_index(int index) const {
    auto items = list();
    if (index < 0 || index >= static_cast<int>(items.size())) {
      return std::nullopt;
    }
    return items[index];
  }
 
protected:
  std::shared_ptr<reusex::ProjectDB> db_;
};

class RouterRegistry {
public:
  explicit RouterRegistry(std::shared_ptr<reusex::ProjectDB> db);

  ResourceRouter &get_router(std::string_view collection);
 
private:
  std::shared_ptr<reusex::ProjectDB> db_;
  std::map<std::string, std::unique_ptr<ResourceRouter>> routers_;
};

std::vector<std::vector<PathComponent>>
expand_wildcards(const std::vector<PathComponent> &components,
                 ResourceRouter &router);
 
} // namespace rux::database