File command.h

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#pragma once

#include <compare>
#include <cstdint>

#include "shared_types.h"
#include "utilities.h"

class SystemState;

class Command {
    inline static uint64_t id_counter = 0;

public:
    // -- Constructors --
    Command(uint64_t initial_run_after = 0);
    virtual ~Command() = default;

    // -- Public Methods --
    virtual void Execute(SystemState* state) = 0;

    virtual constexpr const std::string_view Type() const = 0;

    // -- Public Attributes --
    uint64_t id = 0;        
    uint64_t run_after = 0; 
};

template <typename Derived>
class AutoCommand: virtual public Command {
public:
    constexpr const std::string_view Type() const override {
        // The string is generated once at compile time for this type
        return type_name<Derived>();
    }
};

// ======================================================================================
// --- Operator Overloads ---
// ======================================================================================

constexpr auto operator<=>(const Command& left, const Command& right) {
    if (left.run_after < right.run_after) {
        return std::weak_ordering::less;
    } else if (left.run_after > right.run_after) {
        return std::weak_ordering::greater;
    } else {
        return std::weak_ordering::equivalent;
    }
}

class SetStrategyCommand: virtual public Command, public AutoCommand<SetStrategyCommand> {
public:
    SetStrategyCommand(TurretStrategy initial_strategy, uint64_t initial_run_after);
    void Execute(SystemState* state) override;

private:
    TurretStrategy strategy;
};

class SetStanceCommand: virtual public Command, public AutoCommand<SetStanceCommand> {
public:
    SetStanceCommand(TurretStance initial_stance, uint64_t initial_run_after);
    void Execute(SystemState* state) override;

private:
    TurretStance stance;
};