command.hpp

Go to the documentation of this file.

#pragma once
 
#include <string>
 
#include "CLI/CLI.hpp"
 
#include "porytiles/infra/config/lazy_layered_config.hpp"
#include "porytiles/utilities/panic/panic.hpp"
 
class Command {
  public:
    virtual ~Command() = default;
 
    Command(CLI::App &parent_app, const std::string &name, const std::string &desc, const std::string &group)
        : app_(nullptr)
    {
        if (name.empty()) {
            porytiles::panic("Command name cannot be empty.");
        }
 
        app_ = parent_app.add_subcommand(name, desc);
        porytiles::assert_or_panic(app_ != nullptr, "CLI::App::add_subcommand returned nullptr for: " + name);
 
        // In CLI11, setting group to empty string hides the command from help output
        app_->group(group);
 
        app_->callback([this] { this->Run(); });
    }
 
    // Prevent copy/move semantics
    Command(const Command &) = delete;
    Command &operator=(const Command &) = delete;
    Command(Command &&) = delete;
    Command &operator=(Command &&) = delete;
 
    [[nodiscard]] CLI::App &get_app() const
    {
        if (app_ == nullptr) {
            porytiles::panic("app_ should have been initialized by the constructor");
        }
        return *app_;
    }
 
  protected:
    virtual void Run() = 0;
 
  private:
    CLI::App *app_;
};