#include "tenv.h"

#include "tsystem.h"

#include "tconvert.h"

#include "tfilepath_io.h"

#ifdef LINUX

#include <qdir></qdir>

#endif

#include <qsettings></qsettings>

#ifdef LEVO_MACOSX

#include "macofflinegl.h"

#include "tofflinegl.h"

// Imposto l'offlineGL usando AGL (per togliere la dipendenza da X)

TOfflineGL::Imp *MacOfflineGenerator1(const TDimension &dim) {

  return new MacImplementation(dim);

}

#endif

#include <map></map>

#include <sstream></sstream>

using namespace TEnv;

//=========================================================

//

// root dir

//

//=========================================================

namespace {

class EnvGlobals {  // singleton

  std::string m_applicationName;

  std::string m_applicationVersion;

  std::string m_applicationVersionWithoutRevision;

  std::string m_applicationFullName;

  std::string m_moduleName;

  std::string m_rootVarName;

  std::string m_systemVarPrefix;

  TFilePath m_registryRoot;

  TFilePath m_envFile;

  TFilePath *m_stuffDir;

  TFilePath *m_dllRelativeDir;

  EnvGlobals() : m_stuffDir(0) {}

public:

  ~EnvGlobals() { delete m_stuffDir; }

  static EnvGlobals *instance() {

    static EnvGlobals _instance;

    return &_instance;

  }

  TFilePath getSystemVarPath(std::string varName) {

#ifdef _WIN32

    return m_registryRoot + varName;

#else

    QString settingsPath;

#ifdef MACOSX

    settingsPath =

        QString::fromStdString(getApplicationName()) + QString("_") +

        QString::fromStdString(getApplicationVersionWithoutRevision()) +

        QString(".app") + QString("/Contents/Resources/SystemVar.ini");

#else /* Generic Unix */

    // TODO: use QStandardPaths::ConfigLocation when we drop Qt4

    settingsPath = QDir::homePath();

    settingsPath.append("/.config/");

    settingsPath.append(getApplicationName().c_str());

    settingsPath.append("/SystemVar.ini");

#endif

    QSettings settings(settingsPath, QSettings::IniFormat);

    QString qStr      = QString::fromStdString(varName);

    QString systemVar = settings.value(qStr).toString();

    // printf("getSystemVarPath: path:%s key:%s var:%s\n",

    // settingsPath.toStdString().data(), varName.data(),

    // systemVar.toStdString().data());

    return TFilePath(systemVar.toStdWString());

#endif

  }

  TFilePath getRootVarPath() { return getSystemVarPath(m_rootVarName); }

  std::string getSystemVarValue(std::string varName) {

#ifdef _WIN32

    return TSystem::getSystemValue(getSystemVarPath(varName)).toStdString();

#else

    TFilePath systemVarPath = getSystemVarPath(varName);

    if (systemVarPath.isEmpty()) {

      std::cout << "varName:" << varName << " TOONZROOT not set..."

                << std::endl;

      return "";

    }

    return ::to_string(systemVarPath);

/*

                        char *value = getenv(varName.c_str());

                        if (!value)

                                {

                                std::cout << varName << " not set, returning

   TOONZROOT" << std::endl;

        //value = getenv("TOONZROOT");

                        value="";

                        std::cout << "!!!value= "<< value << std::endl;

                        if (!value)

                                        {

                                        std::cout << varName << "TOONZROOT not

   set..." << std::endl;

                                        //exit(-1);

                                        return "";

                                        }

                                }

      return string(value);

        */

#endif

  }

  TFilePath getStuffDir() {

    if (m_stuffDir) return *m_stuffDir;

    return TFilePath(getSystemVarValue(m_rootVarName));

  }

  void setStuffDir(const TFilePath &stuffDir) {

    delete m_stuffDir;

    m_stuffDir = new TFilePath(stuffDir);

  }

  void updateEnvFile() {

    TFilePath profilesDir =

        getSystemVarPathValue(getSystemVarPrefix() + "PROFILES");

    if (profilesDir == TFilePath()) profilesDir = getStuffDir() + "profiles";

    m_envFile =

        profilesDir + "env" + (TSystem::getUserName().toStdString() + ".env");

  }

  void setApplication(std::string applicationName,

                      std::string applicationVersion, std::string revision) {

    m_applicationName                   = applicationName;

    m_applicationVersionWithoutRevision = applicationVersion;

    if (!revision.empty()) {

      m_applicationVersion =

          m_applicationVersionWithoutRevision + "." + revision;

    } else {

      m_applicationVersion = m_applicationVersionWithoutRevision;

    }

    m_applicationFullName = m_applicationName + " " + m_applicationVersion;

    m_moduleName          = m_applicationName;

    m_rootVarName         = toUpper(m_applicationName) + "ROOT";

#ifdef _WIN32

    m_registryRoot = TFilePath("SOFTWARE\\OpenToonz\\") + m_applicationName +

                     applicationVersion;

#endif

    m_systemVarPrefix = m_applicationName;

    updateEnvFile();

  }

  std::string getApplicationName() { return m_applicationName; }

  std::string getApplicationVersion() { return m_applicationVersion; }

  std::string getApplicationVersionWithoutRevision() {

    return m_applicationVersionWithoutRevision;

  }

  TFilePath getEnvFile() { return m_envFile; }

  void setApplicationFullName(std::string applicationFullName) {

    m_applicationFullName = applicationFullName;

  }

  std::string getApplicationFullName() { return m_applicationFullName; }

  void setModuleName(std::string moduleName) { m_moduleName = moduleName; }

  std::string getModuleName() { return m_moduleName; }

  void setRootVarName(std::string varName) {

    m_rootVarName = varName;

    updateEnvFile();

  }

  std::string getRootVarName() { return m_rootVarName; }

  void setSystemVarPrefix(std::string prefix) { m_systemVarPrefix = prefix; }

  std::string getSystemVarPrefix() { return m_systemVarPrefix; }

  void setDllRelativeDir(const TFilePath &dllRelativeDir) {

    delete m_dllRelativeDir;

    m_dllRelativeDir = new TFilePath(dllRelativeDir);

  }

  TFilePath getDllRelativeDir() {

    if (m_dllRelativeDir) return *m_dllRelativeDir;

    return TFilePath(".");

  }

};

/*

TFilePath EnvGlobals::getSystemPath(int id)

{

  std::map<int, tfilepath="">::iterator it = m_systemPaths.find(id);</int,>

  if(it != m_systemPaths.end()) return it->second;

  switch(id)

    {

     case StuffDir:        return TFilePath();

     case ConfigDir:       return getSystemPath(StuffDir) + "config";

     case ProfilesDir:      return getSystemPath(StuffDir) + "profiles";

     default: return TFilePath();

    }

}

void EnvGlobals::setSystemPath(int id, const TFilePath &fp)

{

  m_systemPaths[id] = fp;

}

*/

}  // namespace

//=========================================================

//

// Variable::Imp

//

//=========================================================

class Variable::Imp {

public:

  std::string m_name;

  std::string m_value;

  bool m_loaded, m_defaultDefined, m_assigned;

  Imp(std::string name)

      : m_name(name)

      , m_value("")

      , m_loaded(false)

      , m_defaultDefined(false)

      , m_assigned(false) {}

};

//=========================================================

//

// varaible manager (singleton)

//

//=========================================================

namespace {

class VariableSet {

  std::map<std::string, *="" variable::imp=""> m_variables;</std::string,>

  bool m_loaded;

public:

  VariableSet() : m_loaded(false) {}

  ~VariableSet() {

    std::map<std::string, *="" variable::imp="">::iterator it;</std::string,>

    for (it = m_variables.begin(); it != m_variables.end(); ++it)

      delete it->second;

  }

  static VariableSet *instance() {

    static VariableSet instance;

    return &instance;

  }

  Variable::Imp *getImp(std::string name) {

    std::map<std::string, *="" variable::imp="">::iterator it;</std::string,>

    it = m_variables.find(name);

    if (it == m_variables.end()) {

      Variable::Imp *imp = new Variable::Imp(name);

      m_variables[name]  = imp;

      return imp;

    } else

      return it->second;

  }

  void commit() {

    // save();

  }

  void loadIfNeeded() {

    if (m_loaded) return;

    m_loaded = true;

    try {

      load();

    } catch (...) {

    }

  }

  void load();

  void save();

};

//-------------------------------------------------------------------

void VariableSet::load() {

#ifndef WIN32

  EnvGlobals::instance()->updateEnvFile();

#endif

  TFilePath fp = EnvGlobals::instance()->getEnvFile();

  if (fp == TFilePath()) return;

  Tifstream is(fp);

  if (!is) return;

  char buffer[1024];

  while (is.getline(buffer, sizeof(buffer))) {

    char *s = buffer;

    while (*s == ' ') s++;

    char *t = s;

    while ('a' <= *s && *s <= 'z' || 'A' <= *s && *s <= 'Z' ||

           '0' <= *s && *s <= '9' || *s == '_')

      s++;

    std::string name(t, s - t);

    if (name.size() == 0) continue;

    while (*s == ' ') s++;

    if (*s != '\"') continue;

    s++;

    std::string value;

    while (*s != '\n' && *s != '\0' && *s != '\"') {

      if (*s != '\\')

        value.push_back(*s);

      else {

        s++;

        if (*s == '\\')

          value.push_back('\\');

        else if (*s == '"')

          value.push_back('"');

        else if (*s == 'n')

          value.push_back('\n');

        else

          continue;

      }

      s++;

    }

    Variable::Imp *imp = getImp(name);

    imp->m_value       = value;

    imp->m_loaded      = true;

  }

}

//-------------------------------------------------------------------

void VariableSet::save() {

  TFilePath fp = EnvGlobals::instance()->getEnvFile();

  if (fp == TFilePath()) return;

  bool exists = TFileStatus(fp.getParentDir()).doesExist();

  if (!exists) {

    try {

      TSystem::mkDir(fp.getParentDir());

    } catch (...) {

      return;

    }

  }

  Tofstream os(fp);

  if (!os) return;

  std::map<std::string, *="" variable::imp="">::iterator it;</std::string,>

  for (it = m_variables.begin(); it != m_variables.end(); ++it) {

    os << it->first << " \"";

    std::string s = it->second->m_value;

    for (int i = 0; i < (int)s.size(); i++)

      if (s[i] == '\"')

        os << "\\\"";

      else if (s[i] == '\\')

        os << "\\\\";

      else if (s[i] == '\n')

        os << "\\n";

      else

        os.put(s[i]);

    os << "\"" << std::endl;

  }

}

//-------------------------------------------------------------------

}  // namespace

//=========================================================

Variable::Variable(std::string name)

    : m_imp(VariableSet::instance()->getImp(name)) {}

//-------------------------------------------------------------------

Variable::Variable(std::string name, std::string defaultValue)

    : m_imp(VariableSet::instance()->getImp(name)) {

  // assert(!m_imp->m_defaultDefined);

  m_imp->m_defaultDefined              = true;

  if (!m_imp->m_loaded) m_imp->m_value = defaultValue;

}

//-------------------------------------------------------------------

Variable::~Variable() {}

//-------------------------------------------------------------------

std::string Variable::getName() const { return m_imp->m_name; }

//-------------------------------------------------------------------

std::string Variable::getValue() const {

  VariableSet::instance()->loadIfNeeded();

  return m_imp->m_value;

}

//-------------------------------------------------------------------

void Variable::assignValue(std::string value) {

  VariableSet *vs = VariableSet::instance();

  vs->loadIfNeeded();

  m_imp->m_value = value;

  try {

    vs->commit();

  } catch (...) {

  }

}

//===================================================================

void TEnv::setApplication(std::string applicationName,

                          std::string applicationVersion,

                          std::string revision) {

  EnvGlobals::instance()->setApplication(applicationName, applicationVersion,

                                         revision);

#ifdef LEVO_MACOSX

  TOfflineGL::defineImpGenerator(MacOfflineGenerator1);

#endif

}

std::string TEnv::getApplicationName() {

  return EnvGlobals::instance()->getApplicationName();

}

std::string TEnv::getApplicationVersion() {

  return EnvGlobals::instance()->getApplicationVersion();

}

void TEnv::setApplicationFullName(std::string applicationFullName) {

  EnvGlobals::instance()->setApplicationFullName(applicationFullName);

}

std::string TEnv::getApplicationFullName() {

  return EnvGlobals::instance()->getApplicationFullName();

}

void TEnv::setModuleName(std::string moduleName) {

  EnvGlobals::instance()->setModuleName(moduleName);

}

std::string TEnv::getModuleName() {

  return EnvGlobals::instance()->getModuleName();

}

void TEnv::setRootVarName(std::string varName) {

  EnvGlobals::instance()->setRootVarName(varName);

}

std::string TEnv::getRootVarName() {

  return EnvGlobals::instance()->getRootVarName();

}

TFilePath TEnv::getRootVarPath() {

  return EnvGlobals::instance()->getRootVarPath();

}

std::string TEnv::getSystemVarStringValue(std::string varName) {

  return EnvGlobals::instance()->getSystemVarValue(varName);

}

TFilePath TEnv::getSystemVarPathValue(std::string varName) {

  EnvGlobals *eg = EnvGlobals::instance();

  return TFilePath(eg->getSystemVarValue(varName));

}

TFilePathSet TEnv::getSystemVarPathSetValue(std::string varName) {

  TFilePathSet lst;

  std::string value = EnvGlobals::instance()->getSystemVarValue(varName);

  int len           = (int)value.size();

  int i             = 0;

  int j             = value.find(';');

  while (j != std::string::npos) {

    std::string s = value.substr(i, j - i);

    lst.push_back(TFilePath(s));

    i = j + 1;

    if (i >= len) return lst;

    j = value.find(';', i);

  }

  if (i < len) lst.push_back(TFilePath(value.substr(i)));

  return lst;

}

void TEnv::setSystemVarPrefix(std::string varName) {

  EnvGlobals::instance()->setSystemVarPrefix(varName);

}

std::string TEnv::getSystemVarPrefix() {

  return EnvGlobals::instance()->getSystemVarPrefix();

}

TFilePath TEnv::getStuffDir() {

  //#ifdef MACOSX

  // return TFilePath("/Applications/Toonz 5.0/Toonz 5.0 stuff");

  //#else

  return EnvGlobals::instance()->getStuffDir();

  //#endif

}

TFilePath TEnv::getConfigDir() {

  TFilePath configDir = getSystemVarPathValue(getSystemVarPrefix() + "CONFIG");

  if (configDir == TFilePath()) configDir = getStuffDir() + "config";

  return configDir;

}

/*TFilePath TEnv::getProfilesDir()

{

  TFilePath fp(getStuffDir());

  return fp != TFilePath() ? fp + "profiles" : fp;

}

*/

void TEnv::setStuffDir(const TFilePath &stuffDir) {

  EnvGlobals::instance()->setStuffDir(stuffDir);

}

TFilePath TEnv::getDllRelativeDir() {

  return EnvGlobals::instance()->getDllRelativeDir();

}

void TEnv::setDllRelativeDir(const TFilePath &dllRelativeDir) {

  EnvGlobals::instance()->setDllRelativeDir(dllRelativeDir);

}

void TEnv::saveAllEnvVariables() { VariableSet::instance()->save(); }

/*

void TEnv::defineSystemPath(SystemFileId id, const TFilePath ®istryName)

{

  string s = TSystem::getSystemValue(registryName);

  if(s=="") return;

  EnvGlobals::instance()->setSystemPath(id, TFilePath(s));

}

//---------------------------------------------------------

TFilePath TEnv::getSystemPath(SystemFileId id)

{

  return EnvGlobals::instance()->getSystemPath(id);

}

*/

//=========================================================

//

// Variabili tipizzate

//

//=========================================================

namespace {

std::istream &operator>>(std::istream &is, TFilePath &path) {

  std::string s;

  is >> s;

  return is;

}

std::istream &operator>>(std::istream &is, TRect &rect) {

  return is >> rect.x0 >> rect.y0 >> rect.x1 >> rect.y1;

}

template <class t=""></class>

std::string toString2(T value) {

  std::ostringstream ss;

  ss << value << '\0';

  return ss.str();

}

template <>

std::string toString2(TRect value) {

  std::ostringstream ss;

  ss << value.x0 << " " << value.y0 << " " << value.x1 << " " << value.y1

     << '\0';

  return ss.str();

}

template <class t=""></class>

void fromString(std::string s, T &value) {

  if (s.empty()) return;

  std::istringstream is(s);

  is >> value;

}

void fromString(std::string s, std::string &value) { value = s; }

}  // namespace

//-------------------------------------------------------------------

IntVar::IntVar(std::string name, int defValue)

    : Variable(name, std::to_string(defValue)) {}

IntVar::IntVar(std::string name) : Variable(name) {}

IntVar::operator int() const {

  int v;

  fromString(getValue(), v);

  return v;

}

void IntVar::operator=(int v) { assignValue(std::to_string(v)); }

//-------------------------------------------------------------------

DoubleVar::DoubleVar(std::string name, double defValue)

    : Variable(name, std::to_string(defValue)) {}

DoubleVar::DoubleVar(std::string name) : Variable(name) {}

DoubleVar::operator double() const {

  double v;

  fromString(getValue(), v);

  return v;

}

void DoubleVar::operator=(double v) { assignValue(std::to_string(v)); }

//-------------------------------------------------------------------

StringVar::StringVar(std::string name, const std::string &defValue)

    : Variable(name, defValue) {}

StringVar::StringVar(std::string name) : Variable(name) {}

StringVar::operator std::string() const {

  std::string v;

  fromString(getValue(), v);

  return v;

}

void StringVar::operator=(const std::string &v) { assignValue(v); }

//-------------------------------------------------------------------

FilePathVar::FilePathVar(std::string name, const TFilePath &defValue)

    : Variable(name, ::to_string(defValue)) {}

FilePathVar::FilePathVar(std::string name) : Variable(name) {}

FilePathVar::operator TFilePath() const {

  std::string v;

  fromString(getValue(), v);

  return TFilePath(v);

}

void FilePathVar::operator=(const TFilePath &v) { assignValue(::to_string(v)); }

//-------------------------------------------------------------------

RectVar::RectVar(std::string name, const TRect &defValue)

    : Variable(name, toString2(defValue)) {}

RectVar::RectVar(std::string name) : Variable(name) {}

RectVar::operator TRect() const {

  TRect v;

  fromString(getValue(), v);

  return v;

}

void RectVar::operator=(const TRect &v) { assignValue(toString2(v)); }

//=========================================================