#pragma once

#include <string>

// #include "source.h"
#include "katom_list.h"
#include "klammer_set.h"
#include "target_set.h"
#include "argtype_set.h"
#include "state.h"

#include "error.h"

class Machine
{
public:
    using input_sources_t =
        std::vector<std::variant<fs::path, std::string>>;

    Machine();

    // Copy constructor
    Machine(const Machine& other) 
        : m_argtypes(other.m_argtypes)
        , m_state(other.m_state)
        , m_targets(other.m_targets)
        , m_klammers(other.m_klammers)
        , m_result(other.m_result)
    {}

    // Copy assignment operator
    Machine& operator=(const Machine& other) {
        if (this != &other) {
            m_argtypes = other.m_argtypes;
            m_state = other.m_state;
            m_targets = other.m_targets;
            m_klammers = other.m_klammers;
            m_result = other.m_result;
        }
        return *this;
    }
    
    void process_cond_katoms(std::vector<Katom>& katoms);
    void process_eval_katoms(std::vector<Katom>& katoms);
    void mark_literal_klammer_content(std::vector<Katom>& katoms);
    void escape_target_characters(const Target& target, std::vector<Katom>& katoms);
    
    // std::vector<Katom> 
    void process_katoms(
        std::vector<Katom>& katoms, const std::string& source,
        bool nonascii=true, bool literal=true, bool ignore=true, bool whitespace=true,
        bool klammers=true, bool eval=true, bool cond=true, bool read=true);

    std::vector<Katom> process(
        std::string text, const std::string& source,
        bool nonascii=true, bool literal=true, bool ignore=true, bool whitespace=true,
        bool klammers=true, bool eval=true, bool cond=true, bool read=true);

    void read(const fs::path& pathname);
    void read(const std::string& s);

    void expand_read_katoms(
        std::vector<Katom>& katoms, std::string source_filename,
        bool nonascii=true, bool literal=true, bool ignore=true, bool ws=true,
        bool klammers=true, bool eval=true, bool cond=true, bool read=true);

    void expand_constant_klammers(katom_list& katoms, const Katom& op, const Katom& cl);
    void extract_machine_definitions();
    void extract_klammer_definitions();
    void extract_klammer_definitions(katom_list katoms);
    void update_state(const std::map<std::string, std::string>& arg_map);

    katom_list apply_klammer(Klammer& klammer, const std::string& target, katom_iter arguments_begin, katom_iter arguments_end);

    void apply_klammer_set(Klammer_set& klammer_set,
               katom_list& katoms, const std::string& target, katom_iter begin, katom_iter end);

    void apply(Klammer_set& klammer_set, katom_list& katoms, const std::string& target);

    std::string run_phase_functions();
    std::string apply(const std::string& target_name, bool final_processing=true, bool escape_characters=true);

    Argtype_set m_argtypes {};
    State m_state {};
    Target_set m_targets {};
    Klammer_set m_klammers {};
    input_sources_t m_sources {};
    std::string m_result {};
    std::vector<Katom> m_katoms {};
};

/*
class Machine {
private:
    std::string m_name;
    int m_id;
    std::vector<std::string> m_sources;
    bool m_active;
    double m_value;

public:
    // Default constructor
    Machine() : m_name(""), m_id(0), m_sources(), m_active(false), m_value(0.0) {}
    
    // Copy constructor
    Machine(const Machine& other) 
        : m_name(other.m_name)           // Copy name
        , m_id(other.m_id)               // Copy id
        , m_sources()                     // Initialize m_sources as empty
        , m_active(other.m_active)        // Copy active status
        , m_value(other.m_value)          // Copy value
    {
        // m_sources is now empty, ready for new initialization
    }
    
    // Assignment operator (if needed)
    Machine& operator=(const Machine& other) {
        if (this != &other) {
            m_name = other.m_name;
            m_id = other.m_id;
            m_sources.clear();  // Clear and leave empty
            m_active = other.m_active;
            m_value = other.m_value;
        }
        return *this;
    }
};
*/