/**
 * @file
 *
 *   Unless noted otherwise, the portions of Isis written by the USGS are public
 *   domain. See individual third-party library and package descriptions for 
 *   intellectual property information,user agreements, and related information.
 *
 *   Although Isis has been used by the USGS, no warranty, expressed or implied,
 *   is made by the USGS as to the accuracy and functioning of such software 
 *   and related material nor shall the fact of distribution constitute any such 
 *   warranty, and no responsibility is assumed by the USGS in connection 
 *   therewith.
 *
 *   For additional information, launch
 *   $ISISROOT/doc//documents/Disclaimers/Disclaimers.html in a browser or see 
 *   the Privacy &amp; Disclaimers page on the Isis website,
 *   http://isis.astrogeology.usgs.gov, and the USGS privacy and disclaimers on
 *   http://www.usgs.gov/privacy.html.
 */
#include <cmath>
#include <iomanip>
#include <iostream>

#include "Camera.h"
#include "CameraFactory.h"
#include "FileName.h"
#include "IException.h"
#include "Preference.h"
#include "Pvl.h"

using namespace std;
using namespace Isis;

void TestLineSamp(Camera *cam, double samp, double line);
/**
 * @internal
 *   @history 2009-08-03 Jeannie Walldren - Changed known lat and lon.
 *   @history 2009-08-06 Jeannie Walldren - Added cmath include and changed calls to abs() 
 *                           to fabs() since the abs() function takes integer values while the
 *                           fabs() takes floats. Changed Center Lat tolerance 
 *                           from 4E-10 to 4.1E-10 since the difference on 
 *                           Darwin powerpc was 4.07E-10.
 *   @history 2011-05-03 Jeannie Walldren - Updated unitTest to test for new methods.
 *   @history 2016-10-27 Kristin Berry - Updated known latitude and longitude.  References #4476.
 */
int main(void) {
  Preference::Preferences(true);

  cout << "Unit Test for HrscCamera..." << endl;
  /** HRSC: Corner tests offset a little, longitude tolerance increased.
   *  DeltaSamp/Line tolerances also increased.
   */
  try {
    // These should be lat/lon at center of image. To obtain these numbers for a new cube/camera,
    // set both the known lat and known lon to zero and copy the unit test output "Latitude off by: "
    // and "Longitude off by: " values directly into these variables.
    double knownLat = -62.4809504564515166;
    double knownLon = 48.4111258061244243;

    Cube c("$mex/testData/h2254_0000_s12.cub", "r");
    Camera *cam = CameraFactory::Create(c);
    cout << "FileName: " << FileName(c.fileName()).name() << endl;
    cout << "CK Frame: " << cam->instrumentRotation()->Frame() << endl << endl;
    cout.setf(std::ios::fixed);
    cout << setprecision(9);

    // Test kernel IDs
    cout << "Kernel IDs: " << endl;
    cout << "CK Frame ID = " << cam->CkFrameId() << endl;
    cout << "CK Reference ID = " << cam->CkReferenceId() << endl;
    cout << "SPK Target ID = " << cam->SpkTargetId() << endl;
    cout << "SPK Reference ID = " << cam->SpkReferenceId() << endl << endl;
    
    // Test name methods
    cout << "Spacecraft Name Long: " << cam->spacecraftNameLong() << endl;
    cout << "Spacecraft Name Short: " << cam->spacecraftNameShort() << endl;
    cout << "Instrument Name Long: " << cam->instrumentNameLong() << endl;
    cout << "Instrument Name Short: " << cam->instrumentNameShort() << endl << endl;

    // Test all four corners to make sure the conversions are right
    cout << "For upper left corner ..." << endl;
    TestLineSamp(cam, 1.0, 1.0);

    cout << "For upper right corner ..." << endl;
    TestLineSamp(cam, cam->Samples(), 2.0);

    cout << "For lower left corner ..." << endl;
    TestLineSamp(cam, 1.0, cam->Lines());

    cout << "For lower right corner ..." << endl;
    TestLineSamp(cam, cam->Samples(), cam->Lines());

    double samp = cam->Samples() / 2;
    double line = cam->Lines() / 2;
    cout << "For center pixel position ..." << endl;

    if(!cam->SetImage(samp, line)) {
      cout << "ERROR" << endl;
      return 0;
    }

    if(fabs(cam->UniversalLatitude() - knownLat) < 1.81E-5) {
      cout << "Latitude OK" << endl;
    }
    else {
      cout << setprecision(16) << "Latitude off by: " << cam->UniversalLatitude() - knownLat << endl;
    }

    if(fabs(cam->UniversalLongitude() - knownLon) < 1.4E-6) {
      cout << "Longitude OK" << endl;
    }
    else {
      cout << setprecision(16) << "Longitude off by: " << cam->UniversalLongitude() - knownLon << endl;
    }
  }
  catch(IException &e) {
    e.print();
  }
}

void TestLineSamp(Camera *cam, double samp, double line) {
  bool success = cam->SetImage(samp, line);

  if(success) {
    success = cam->SetUniversalGround(cam->UniversalLatitude(), cam->UniversalLongitude());
  }

  if(success) {
    double deltaSamp = samp - cam->Sample();
    double deltaLine = line - cam->Line();
    if(fabs(deltaSamp) < 0.008) deltaSamp = 0;
    if(fabs(deltaLine) < 0.008) deltaLine = 0;
    cout << "DeltaSample = " << deltaSamp << endl;
    cout << "DeltaLine = " << deltaLine << endl << endl;
  }
  else {
    cout << "DeltaSample = ERROR" << endl;
    cout << "DeltaLine = ERROR" << endl << endl;
  }
}

