NBEngine/engine/NBCore/ANSITerm.hpp

#pragma once
#ifndef _NB_ANSI_TERM
#define _NB_ANSI_TERM

#include <array>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <string>
#include <tuple>
#include <type_traits>

#include "TypeTraits.hpp"

namespace nb {

template <typename ST, typename U>
struct SmartText {
    using Type = ST;
    using ValType = U;
    static constexpr bool HasChild = Type::HasChild;
};

template <typename Type, typename U>
struct StyleFormatter : SmartText<StyleFormatter<Type, U>, U> {
    using Base = SmartText<StyleFormatter<Type, U>>;
    using Base::Type;
    using Base::ValType;
    static constexpr bool HasChild  = true;

    std::string fmt;
    ValType val;
    std::string closing;
};

template <typename Child>
struct StyleFormatter<Child, void> : SmartText<StyleFormatter<Child, void>, void>{
    using Base = SmartText<StyleFormatter>;
    using Base::Type;
    using Base::ValType;
    static constexpr bool HasChild  = false;

    std::string fmt;
};

template <typename U=void>
struct ANSITextColor;

template <typename U>
struct ANSITextColor : StyleFormatter<ANSITextColor<U>, U> {
    using Base = StyleFormatter<ANSITextColor, U>;
    using Base::ValType
    using Base::HasChild;

    template <typename = typename std::enable_if<HasChild, U>::type>
    ANSITextColor(const U& _val) : Base{"\x1b[39m", _val, "\x1b[39m"} {}
    template <typename = typename std::enable_if<!HasChild, U>>
    ANSITextColor() : Base{"\x1b[92m"} {}
};

template <>
struct ANSITextColor<std::string> : StyleFormatter<ANSITextColor<std::string>, std::string> {
    using Base = StyleFormatter<ANSITextColor<std::string>, std::string>;
    static constexpr bool HasChild = Base::HasChild;

    template <std::size_t N>
    ANSITextColor(char const(&_val) [N]) : Base{"\x1b[92m", _val, "\x1b[39m"} {}
    ANSITextColor(const char* _val) : Base{"\x1b[92m", _val, "\x1b[39m"} {}
    ANSITextColor(const std::string& _val) : Base{"\x1b[92m", _val, "\x1b[39m"} {}
};

struct CellBase {
    uint8_t width;
    uint8_t height;
};

template <typename T>
struct Cell : SmartText<Cell<T>, T> {
    using Base = SmartText<Cell<T>, T>;
    using Base::ValType
    using Base::HasChild;

    Cell(const Type& _val, const uint8_t& w, const uint8_t& h=1)
        : val(_val), width(w), height(h) {}

    Type val;
    uint8_t width;

    uint8_t height;
};

template <>
struct Cell<std::string> : SmartText<Cell<std::string>, std::string> {
    using Base = SmartText<Cell<std::string>, std::string>;
    using Base::ValType
    using Base::HasChild;

    template <std::size_t N>
    Cell( const(&_val) [N], const uint8_t& w, const uint8_t& h=0) : Cell(std::string(_val), w, h) {}
    Cell(char* _val, const uint8_t& w, const uint8_t& h=0) : Cell(std::string(_val), w, h) {}
    Cell(const ValType& _val, const uint8_t& w, const uint8_t& h=0)
    : val(_val), width(w) {
        unsigned int strsize = _val.size();
        height = strsize / width;
        height += (strsize % width) ? 1 : 0;
    }

    ValType val;
    uint8_t width;

    uint8_t height;
};

template <typename T>
std::ostream& operator<<(std::ostream& stream, const Cell<T>& cll) {
    
}

template <typename T>
void ChangeCellHeight(int i, Cell<T>& cll, const unsigned int& h) {
    if (h < cll.height) { cll.height=h; }
}

template <typename T>
void GetTallestCell(int i, Cell<T>& cll, unsigned int& h) {
    if (cll.height > h) { h = cll.height; }
}

template <typename... Pack>
struct TableRow {
    using RowCells = std::tuple<Cell<Pack>...>;
    using CellWidths = std::array<int, sizeof...(Pack)>;
    using DelimiterArray = std::array<std::string, sizeof...(Pack)+1>;

    TableRow(CellWidths&& widths_, DelimiterArray&& delims_, const Pack&... vals_) 
    : _widths(widths_), _delimiters(delims_) {
        nb::ForEach(_cells, GetTallestCell, _height);
    }

    static constexpr int num_columns = sizeof...(Pack);
    
    int height() const { return height; }
    inline int height(const unsigned int newh) {
        nb::ForEach(_cells, ChangeCellHeight, newh);
        return (_height=newh);
    }

protected:
    const CellWidths _widths;
    const DelimiterArray _delimiters;
    RowCells _cells;
    int _height;

};

template<typename... Pack>
class Table {
public:
    Table(const Pack&... _vals) :  row(std::array<int, sizeof...(Pack)>(10), 
                std::array<std::string, sizeof...(Pack)>(""), _vals...) {}
private:
    TableRow<Pack...> row;
};

} // namespace nb

template<typename Type, typename U>
std::ostream& operator<<(std::ostream& stream, const nb::StyleFormatter<Type, U>& msg) {
    if (&stream == &std::cout) {
        stream << msg.fmt;
        if (msg.HasChild) {
            stream << msg.val << msg.closing;
        }
    } else {
        if (msg.HasChild) { stream << msg.val; }
    }
    stream << std::flush;
    return stream;
}

#ifdef _NB_TARGET_WINDOWS
template<typename... Types>
std::ostream& operator<<(std::ostream& stream, const nb::TableRow<Types...>& row) {
    using PosType = decltype(stream.tellp());
    constexpr int num_cells = sizeof...(Types);

    int col_num = 0;
    int col_start = 0;

    return stream;
}
#endif // _NB_TARGET_WINDOWS

#endif // _NB_ANSI_TERM