/*
 * (C) Copyright 1996-2016 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation
 * nor does it submit to any jurisdiction.
 */

/*! \file magics.h

  \brief This file contains all global definition for the MagPlus library.
  \author Meteorological Visualisation Section, ECMWF
  \license Apache License 2.0

  Started: January 2004

  Changes:

*/
#ifndef magicsplusplus_H
#define magicsplusplus_H

#include <magics_config.h>
#if defined(MAGICS_AIX_XLC)
#include <unistd.h>  // for AIX
#endif
#include <climits>

#include "magics_export.h"

#ifdef __GNUC__
#define MAGICS_DEPRECATED __attribute__((deprecated))
#else
#define MAGICS_DEPRECATED
#endif

#include <cstdlib>
#include <cstring>
#include <iostream>
#include <sstream>
#include <string>

using std::cerr;
using std::cout;
using std::endl;
using std::ends;
using std::ifstream;
using std::ofstream;
using std::ostream;
using std::ostringstream;
using std::string;

#include <map>
#include <memory>
#include <numeric>
#include <set>
#include <vector>

using std::allocator;
using std::map;
using std::pair;
using std::set;
using std::unique_ptr;
using std::vector;

#include <exception>

using std::exception;

#include <cassert>
#include <cmath>

#include "magics_windef.h"

#ifdef MAGICS_ON_WINDOWS
#include <io.h>
#define strcasecmp _stricmp
#endif

/*! \namespace magics

 The <I>magics</I> namespace encapsulates all elements of Magics++.
 The namespace prevents confusions with other libraries or
 older versions of Magics.

 You can use this namespace by simple prefix all Magics elements
 by <I>magics::</I> or by typing <I>using namespace magics;</I>
 before any calls in your program.

*/
namespace magics {

template <class P>
class magvector : public std::vector<P> {
public:
    magvector() {}
    magvector(const std::vector<P>& list) : std::vector<P>(list) {}
    virtual ~magvector() {}
    virtual MAGICS_NO_EXPORT void print(ostream& out) const {
        if (this->size() < 10) {
            out << "Vector[";
            string sep            = "";
            const unsigned int si = this->size();
            for (unsigned int i = 0; i < si; i++) {
                out << sep << (*this)[i];
                sep = ", ";
            }
            out << "]";
        }
        else {
            unsigned int nb = this->size();
            out << "Vector[" << (*this)[0] << ", " << (*this)[1] << ", " << (*this)[2];
            out << "...." << (*this)[nb - 3] << ", " << (*this)[nb - 2] << ", " << (*this)[nb - 1];
            out << "(" << nb << " elements)]";
        }
    }
    // -- Friends
    friend MAGICS_NO_EXPORT ostream& operator<<(ostream& s, const magvector<P>& p) {
        p.print(s);
        return s;
    }
};

#define MAGPLUS_PATH_TO_SHARE_ "/share/magics/"
#define MAGPLUS_LINK_ "http://software.ecmwf.int/magics"
#define MAGPLUS_PATH_TO_PS_FONTS_ POSTSCRIPT_FONT_PATH;

typedef magvector<string> stringarray;
typedef magvector<int> intarray;
typedef magvector<long int> longintarray;
typedef magvector<double> doublearray;
typedef magvector<double> floatarray;

enum LineStyle
{
    M_SOLID,
    M_DASH,
    M_DOT,
    M_CHAIN_DASH,
    M_CHAIN_DOT
};
enum Hemisphere
{
    NORTH,
    SOUTH
};
enum Justification
{
    MLEFT,
    MCENTRE,
    MRIGHT
};
enum Position
{
    M_AUTOMATIC,
    M_TOP,
    M_BOTTOM,
    M_LEFT,
    M_RIGHT
};
enum VerticalAlign
{
    MNORMAL,
    MTOP,
    MCAP,
    MHALF,
    MBASE,
    MBOTTOM
};
enum Shading
{
    M_SH_NONE,
    M_SH_SOLID,
    M_SH_HATCH,
    M_SH_DOT
};
enum ArrowPosition
{
    M_TAIL,
    M_CENTRE,
    M_HEAD_ONLY
};
enum DisplayType
{
    M_DT_ABSOLUTE,
    M_DT_INLINE,
    M_DT_BLOCK,
    M_DT_NONE,
    M_DT_HIDDEN
};
enum ListPolicy
{
    M_LASTONE,
    M_CYCLE
};
enum GraphicsFormat
{
    PS,
    EPS,
    PDF,
    SVG,
    KML,
    PNG,
    X,
    CPS,
    CSVG,
    GIF,
    AGIF,
    JPG,
    QT,
    GEOJSON
};
enum AxisAutomaticSetting
{
    m_off,
    m_both,
    m_min_only,
    m_max_only
};

static double EPSILON = 1.25e-10;

template <class T>
inline MAGICS_NO_EXPORT T abs(const T a) {
    return (a < 0) ? -a : a;
}

#ifndef PI
const double PI = atan(1.) * 4.;
#endif

inline MAGICS_NO_EXPORT double RAD(const double r) {
    return r * PI / 180.;
}
inline MAGICS_NO_EXPORT double DEG(const double d) {
    return d * 180. / PI;
}
inline MAGICS_NO_EXPORT bool zero(const double v) {
    return abs(v) < EPSILON;
}
inline MAGICS_NO_EXPORT bool same(const double a, const double b) {
    return zero(a - b);
}
inline MAGICS_NO_EXPORT bool zero(const double v, double epsilon) {
    return abs(v) < epsilon;
}
inline MAGICS_NO_EXPORT bool same(const double a, const double b, double epsilon) {
    return zero(a - b, epsilon);
}

//! Global function to read env variables
inline MAGICS_NO_EXPORT string getEnvVariable(const string var) {
    const char* va = var.c_str();
    const char* ww = getenv(va);
    if (ww)
        return string(ww);
    if (!strcmp(va, "MAGPLUS_HOME"))
        return string(MAGICS_INSTALL_PATH);
    return "";
}

//! Global function to return the Magics++ version for ID line
/*! comes from magics_config.h !!! */
inline string getMagicsVersionString() {
    const string magics = MAGICS_NAME;
    string version      = MAGICS_VERSION_STR;
    if (sizeof(long) == 8)
        version += string(" (64 bit)");
    return magics + string(" ") + version;
}

// inline MAGICS_NO_EXPORT int upper_case(const int c) { return toupper(c);}
inline MAGICS_NO_EXPORT char lower_case(const char c) {
    return tolower(c);
}

//! Make an lowercase copy of s:
inline MAGICS_NO_EXPORT string lowerCase(const string& s) {
    std::string out;
    std::string::const_iterator se = s.end();
    for (string::const_iterator l = s.begin(); l != se; ++l) {
        char ii = tolower(*l);
        out.push_back(ii);
    }
    return out;
}

/*!
  \brief compares two strings
*/
inline MAGICS_NO_EXPORT bool magCompare(const string& s1, const string& s2) {
    if (s1.size() != s2.size())
        return false;
    return !(strcasecmp(s1.c_str(), s2.c_str()));
}

inline MAGICS_NO_EXPORT std::string replacePathWithHome(const string& path) {
    const std::string home_path = getEnvVariable("HOME");
    std::string filename        = path.substr(path.find_last_of("/\\"));
    return home_path + filename;
}

inline MAGICS_NO_EXPORT string buildConfigPath(const string& config, const string& aux = "") {
    ostringstream out;
    out << getEnvVariable("MAGPLUS_HOME") << "/share/magics/" << config;
    if (aux.size())
        out << "/" << aux;
    return out.str();
}

/*!
  \brief returns the biggest integer inside a double
*/
inline double maground(double x) {
    return floor(x + 0.5);
}

inline double tonumber(const string& str) {
    double r;
    std::stringstream ss(str);
    ss >> r;
    return r;
}

template <class T>
inline string tostring(const T& in) {
    std::ostringstream out;
    out << in;
    return out.str();
}

}  // namespace magics
#endif
