HelpService.hxx

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#pragma once
 
#include "../../services/ISubject.hxx"
 
#include <memory>
#include <vector>
#include <string>
#include <functional>

namespace svcs::cli {
 
using namespace svcs::services;

class HelpService {
private:
    std::shared_ptr<ISubject> eventBus_;
 
    // Callback functions instead of direct CommandFactory dependency

    std::function<std::vector<std::string>()> getCommandsCallback_;

    std::function<std::string(const std::string&)> getDescriptionCallback_;

    std::function<void(const std::string&)> showHelpCallback_;

    std::function<std::string(const std::string&)> getUsageCallback_;
 
public:
    HelpService(std::shared_ptr<ISubject> bus,
                std::function<std::vector<std::string>()> getCommands,
                std::function<std::string(const std::string&)> getDescription,
                std::function<void(const std::string&)> showHelp,
                std::function<std::string(const std::string&)> getUsage = nullptr);

    [[nodiscard]] std::vector<std::string> getAvailableCommands() const;

    [[nodiscard]] std::string getCommandDescription(const std::string& commandName) const;

    void showCommandHelp(const std::string& commandName) const;

    [[nodiscard]] bool commandExists(const std::string& commandName) const;

    [[nodiscard]] std::string getCommandUsage(const std::string& commandName) const;
};
 
}