/* Common code and junk
 *
 * Copyright (C) 2011-2018 Mark Watkins <mark@jedimark.net>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file COPYING in the main directory of the source code
 * for more details. */

#ifndef COMMON_H
#define COMMON_H

#include <QString>
#include <QColor>
#include <QObject>
#include <QThread>

#define DEBUG_EFFICIENCY 1

#include <QLocale>
#include "Graphs/glcommon.h"

enum GFXEngine { GFX_OpenGL=0, GFX_ANGLE, GFX_Software, MaxGFXEngine=GFX_Software};
const QString GFXEngineSetting = "GFXEngine";
extern QString GFXEngineNames[MaxGFXEngine+1]; // Set by initializeStrings()

const QString CSTR_GFX_ANGLE = "ANGLE";
const QString CSTR_GFX_OpenGL = "OpenGL";
const QString CSTR_GFX_BrokenGL = "LegacyGFX";

extern QString MedDateFormat;
extern bool dayFirst;

//! \brief Gets the first day of week from the system locale, to show in the calendars.
Qt::DayOfWeek firstDayOfWeekFromLocale();

QString getGFXEngine();

bool gfxEgnineIsSupported(GFXEngine e);
GFXEngine currentGFXEngine();
void setCurrentGFXEngine(GFXEngine e);

QString appResourcePath();
QString getGraphicsEngine();
QString getOpenGLVersionString();
float getOpenGLVersion();

QStringList makeBuildInfo(QString forcedEngine);
QStringList getBuildInfo();
QStringList addBuildInfo (QString value);

void SetDateFormat ();

QByteArray gCompress(const QByteArray& data);
QByteArray gUncompress(const QByteArray &data);

const quint16 filetype_summary = 0;
const quint16 filetype_data = 1;
const quint16 filetype_sessenabled = 5;

enum UnitSystem { US_Undefined, US_Metric, US_English };

typedef float EventDataType;

struct ValueCount {
    ValueCount() { value = 0; count = 0; p = 0; }
    ValueCount( EventDataType val, qint64 cnt, double pp)
        :value(val), count(cnt), p(pp) {}

    ValueCount(const ValueCount &copy) = default;
    EventDataType value;
    qint64 count;
    double p;
};

extern int idealThreads();

void copyPath(QString src, QString dst, bool overwrite=false);


// Primarily sort by value
bool operator <(const ValueCount &a, const ValueCount &b);

const float ounce_convert = 28.3495231F; // grams
const float pound_convert = ounce_convert * 16;

QString weightString(float kg, UnitSystem us = US_Undefined);

//! \brief Format pressure relief by placing a space before cmH2O if not already there
QString formatRelief (QString relief);

//! \brief Mercilessly trash a directory
bool removeDir(const QString &path);

///Represents the exception for taking the median of an empty list
class median_of_empty_list_exception:public std::exception{
  virtual const char* what() const throw() {
    return "Attempt to take the median of an empty list of numbers.  "
      "The median of an empty list is undefined.";
  }
};

///Return the median of a sequence of numbers defined by the random
///access iterators begin and end.  The sequence must not be empty
///(median is undefined for an empty set).
///
///The numbers must be convertible to double.
template<class RandAccessIter>
float median(RandAccessIter begin, RandAccessIter end)
//  throw (median_of_empty_list_exception)
{
  if (begin == end) { throw median_of_empty_list_exception(); }
  int size = end - begin;
  int middleIdx = size/2;
  RandAccessIter target = begin + middleIdx;
  std::nth_element(begin, target, end);

  if (size % 2 != 0) { //Odd number of elements
    return *target;
  } else {            //Even number of elements
    double a = *target;
    RandAccessIter targetNeighbor= target-1;
    std::nth_element(begin, targetNeighbor, end);
    return (a+*targetNeighbor)/2.0;
  }
}


const QString getAppName();
const QString getDeveloperName();
const QString getDeveloperDomain();
const QString getModifiedAppData();

void validateAllFonts ();
void validateFont (QString which, int size, bool bold, bool italic);
void setApplicationFont ();

void initializeStrings();


enum OverlayDisplayType { ODT_Bars, ODT_TopAndBottom };

///////////////////////////////////////////////////////////////////////////////////////////////
// Preference Name Strings
///////////////////////////////////////////////////////////////////////////////////////////////

const QString STR_GEN_Profile = "Profile";
const QString STR_GEN_SkipLogin = "SkipLoginScreen";
const QString STR_GEN_DataFolder = "DataFolder";

const QString STR_PREF_ReimportBackup = "ReimportBackup";
const QString STR_PREF_LastCPAPPath = "LastCPAPPath";
const QString STR_PREF_LastOximetryPath = "LastOximetryPath";

const QString STR_MACH_ResMed = "ResMed";
const QString STR_MACH_PRS1 = "PRS1";
const QString STR_MACH_Journal = "Journal";
const QString STR_MACH_Intellipap = "Intellipap";
const QString STR_MACH_Weinmann= "Weinmann";
const QString STR_MACH_FPIcon = "FPIcon";
const QString STR_MACH_SleepStyle = "SleepStyle";
const QString STR_MACH_MSeries = "MSeries";
const QString STR_MACH_CMS50 = "CMS50";
const QString STR_MACH_ZEO = "Zeo";

const QString STR_PREF_Language = "Language";

const QString STR_AppName = "OSCAR";
const QString STR_DeveloperName = "OSCAR_Team";
const QString STR_DeveloperDomain = "oscar-team.org";
const QString STR_AppData = "OSCAR_Data";

///////////////////////////////////////////////////////////////////////////////////////////////
// Commonly used translatable text strings
///////////////////////////////////////////////////////////////////////////////////////////////

extern QString STR_UNIT_M;
extern QString STR_UNIT_CM;
extern QString STR_UNIT_INCH;
extern QString STR_UNIT_FOOT;
extern QString STR_UNIT_POUND;
extern QString STR_UNIT_OUNCE;
extern QString STR_UNIT_KG;
extern QString STR_UNIT_CMH2O;
extern QString STR_UNIT_Hours;
extern QString STR_UNIT_Minutes;
extern QString STR_UNIT_Seconds;
extern QString STR_UNIT_h; // (h)ours, (m)inutes, (s)econds
extern QString STR_UNIT_m;
extern QString STR_UNIT_s;
extern QString STR_UNIT_ms;
extern QString STR_UNIT_BPM;       // Beats per Minute
extern QString STR_UNIT_LPM;       // Litres per Minute
extern QString STR_UNIT_ml;        // millilitres
extern QString STR_UNIT_Litres;
extern QString STR_UNIT_Hz;
extern QString STR_UNIT_EventsPerHour;
extern QString STR_UNIT_Percentage;
extern QString STR_UNIT_BreathsPerMinute;
extern QString STR_UNIT_Unknown;
extern QString STR_UNIT_Ratio;
extern QString STR_UNIT_Severity;
extern QString STR_UNIT_Degrees;

extern QString STR_MessageBox_Question;
extern QString STR_MessageBox_Information;
extern QString STR_MessageBox_Error;
extern QString STR_MessageBox_Warning;
extern QString STR_MessageBox_Busy;
extern QString STR_MessageBox_PleaseNote;

extern QString STR_MessageBox_Yes;
extern QString STR_MessageBox_No;
extern QString STR_MessageBox_Cancel;
extern QString STR_MessageBox_Destroy;
extern QString STR_MessageBox_Save;

extern QString STR_Empty_NoData;
extern QString STR_Empty_NoSessions;
extern QString STR_Empty_Brick;
extern QString STR_Empty_NoGraphs;
extern QString STR_Empty_SummaryOnly;

extern QString STR_TR_Default;


extern QString STR_TR_BMI;         // Short form of Body Mass Index
extern QString STR_TR_Weight;
extern QString STR_TR_Zombie;
extern QString STR_TR_PulseRate;   // Pulse / Heart rate
extern QString STR_TR_SpO2;
extern QString STR_TR_Plethy;      // Plethysomogram
extern QString STR_TR_Pressure;

extern QString STR_TR_Daily;
extern QString STR_TR_Profile;
extern QString STR_TR_Overview;
extern QString STR_TR_Oximetry;

extern QString STR_TR_Oximeter;
extern QString STR_TR_EventFlags;

extern QString STR_TR_Inclination;
extern QString STR_TR_Orientation;
extern QString STR_TR_Motion;

// Machine type names.
extern QString STR_TR_CPAP;    // Constant Positive Airway Pressure
extern QString STR_TR_BIPAP;   // Bi-Level Positive Airway Pressure
extern QString STR_TR_BiLevel; // Another name for BiPAP
extern QString STR_TR_EPAP;    // Expiratory Positive Airway Pressure
extern QString STR_TR_EPAPLo;  // Expiratory Positive Airway Pressure, Low
extern QString STR_TR_EPAPHi;  // Expiratory Positive Airway Pressure, High
extern QString STR_TR_IPAP;    // Inspiratory Positive Airway Pressure
extern QString STR_TR_IPAPLo;  // Inspiratory Positive Airway Pressure, Low
extern QString STR_TR_IPAPHi;  // Inspiratory Positive Airway Pressure, High
extern QString STR_TR_APAP;    // Automatic Positive Airway Pressure
extern QString STR_TR_ASV;     // Assisted Servo Ventilator
extern QString STR_TR_AVAPS;   // Average Volume Assured Pressure Support
extern QString STR_TR_STASV;

extern QString STR_TR_Humidifier;

extern QString STR_TR_H;       // Short form of Hypopnea
extern QString STR_TR_OA;      // Short form of Obstructive Apnea
extern QString STR_TR_A;       // Short form of Apnea
extern QString STR_TR_UA;      // Short form of Unspecified Apnea
extern QString STR_TR_CA;      // Short form of Clear Airway Apnea
extern QString STR_TR_FL;      // Short form of Flow Limitation
extern QString STR_TR_SA;      // Short form of SensAwake
extern QString STR_TR_LE;      // Short form of Leak Event
extern QString STR_TR_EP;      // Short form of Expiratory Puff
extern QString STR_TR_VS;      // Short form of Vibratory Snore
extern QString
STR_TR_VS2;     // Short form of Secondary Vibratory Snore (Some Philips Respironics Machines have two sources)
extern QString STR_TR_RERA;    // Acronym for Respiratory Effort Related Arousal
extern QString STR_TR_PP;      // Short form for Pressure Pulse
extern QString STR_TR_P;       // Short form for Pressure Event
extern QString STR_TR_RE;      // Short form of Respiratory Effort Related Arousal
extern QString STR_TR_NR;      // Short form of Non Responding event? (forgot sorry)
extern QString STR_TR_NRI;     // Sorry I Forgot.. it's a flag on Intellipap machines
extern QString STR_TR_O2;      // SpO2 Desaturation
extern QString STR_TR_PC;      // Short form for Pulse Change
extern QString STR_TR_UF1;     // Short form for User Flag 1
extern QString STR_TR_UF2;     // Short form for User Flag 2
extern QString STR_TR_UF3;     // Short form for User Flag 3



extern QString STR_TR_PS;     // Short form of Pressure Support
extern QString STR_TR_AHI;    // Short form of Apnea Hypopnea Index
extern QString STR_TR_RDI;    // Short form of Respiratory Distress Index
extern QString STR_TR_AI;     // Short form of Apnea Index
extern QString STR_TR_HI;     // Short form of Hypopnea Index
extern QString STR_TR_UAI;    // Short form of Uncatagorized Apnea Index
extern QString STR_TR_CAI;    // Short form of Clear Airway Index
extern QString STR_TR_FLI;    // Short form of Flow Limitation Index
extern QString STR_TR_REI;    // Short form of RERA Index
extern QString STR_TR_EPI;    // Short form of Expiratory Puff Index
extern QString STR_TR_CSR;    // Short form of Cheyne Stokes Respiration
extern QString STR_TR_PB;     // Short form of Periodic Breathing


// Graph Titles
extern QString STR_TR_IE;              // Inspiratory Expiratory Ratio
extern QString STR_TR_InspTime;        // Inspiratory Time
extern QString STR_TR_ExpTime;         // Expiratory Time
extern QString STR_TR_RespEvent;       // Respiratory Event
extern QString STR_TR_FlowLimitation;
extern QString STR_TR_FlowLimit;
extern QString STR_TR_PatTrigBreath;   // Patient Triggered Breath
extern QString STR_TR_TgtMinVent;      // Target Minute Ventilation
extern QString STR_TR_TargetVent;      // Target Ventilation
extern QString STR_TR_MinuteVent;      // Minute Ventilation
extern QString STR_TR_TidalVolume;
extern QString STR_TR_RespRate;        // Respiratory Rate
extern QString STR_TR_Snore;
extern QString STR_TR_Leak;
extern QString STR_TR_LargeLeak;
extern QString STR_TR_LL;
extern QString STR_TR_Leaks;
extern QString STR_TR_TotalLeaks;
extern QString STR_TR_UnintentionalLeaks;
extern QString STR_TR_MaskPressure;
extern QString STR_TR_FlowRate;
extern QString STR_TR_SleepStage;
extern QString STR_TR_Usage;
extern QString STR_TR_Sessions;
extern QString STR_TR_PrRelief; // Pressure Relief
extern QString STR_TR_SensAwake;

extern QString STR_TR_Bookmarks;
extern QString STR_TR_OSCAR;
extern QString STR_TR_AppVersion;

extern QString STR_TR_Mode;
extern QString STR_TR_Model;
extern QString STR_TR_Brand;
extern QString STR_TR_Series;
extern QString STR_TR_Serial;
extern QString STR_TR_Machine;
extern QString STR_TR_Channel;
extern QString STR_TR_Settings;

extern QString STR_TR_Name;
extern QString STR_TR_DOB;    // Date of Birth
extern QString STR_TR_Phone;
extern QString STR_TR_Address;
extern QString STR_TR_Email;
extern QString STR_TR_PatientID;
extern QString STR_TR_Date;

extern QString STR_TR_BedTime;
extern QString STR_TR_WakeUp;
extern QString STR_TR_MaskTime;
extern QString STR_TR_Unknown;
extern QString STR_TR_None;
extern QString STR_TR_Ready;

extern QString STR_TR_First;
extern QString STR_TR_Last;
extern QString STR_TR_Start;
extern QString STR_TR_End;
extern QString STR_TR_On;
extern QString STR_TR_Off;
extern QString STR_TR_Auto;
extern QString STR_TR_Yes;
extern QString STR_TR_No;


extern QString STR_TR_Min;    // Minimum
extern QString STR_TR_Max;    // Maximum
extern QString STR_TR_Med;    // Median

extern QString STR_TR_Average;
extern QString STR_TR_Median;
extern QString STR_TR_Avg;    // Short form of Average
extern QString STR_TR_WAvg;   // Short form of Weighted Average

#endif // COMMON_H
