registry.h

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// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#ifndef ACTIONENGINE_ACTIONS_REGISTRY_H_
#define ACTIONENGINE_ACTIONS_REGISTRY_H_
 
#include <memory>
#include <string>
#include <string_view>
#include <vector>
 
#include <absl/container/flat_hash_map.h>
 
#include "actionengine/actions/schema.h"
#include "actionengine/data/types.h"

 
namespace act {

class ActionRegistry {
 public:
  void Register(std::string_view name, const ActionSchema& schema,
                const ActionHandler& handler);

  [[nodiscard]] bool IsRegistered(std::string_view name) const;

  [[nodiscard]] ActionMessage MakeActionMessage(std::string_view name,
                                                std::string_view id) const;

  [[nodiscard]] std::unique_ptr<Action> MakeAction(
      std::string_view name, std::string_view action_id = "",
      std::vector<Port> inputs = {}, std::vector<Port> outputs = {}) const;

  [[nodiscard]] const ActionSchema& GetSchema(std::string_view name) const;

  [[nodiscard]] const ActionHandler& GetHandler(std::string_view name) const;
 
  [[nodiscard]] std::vector<std::string> ListRegisteredActions() const {
    std::vector<std::string> names;
    names.reserve(schemas_.size());
    for (const auto& [name, _] : schemas_) {
      names.push_back(name);
    }
    return names;
  }
 
  absl::flat_hash_map<std::string, ActionSchema> schemas_;
  absl::flat_hash_map<std::string, ActionHandler> handlers_;
};
}  // namespace act
 
#endif  // ACTIONENGINE_ACTIONS_REGISTRY_H_