/**
 * @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 <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);

int main(void) {
  Preference::Preferences(true);

  cout << "Unit Test for IdealCamera..." << endl;
  /*
   *  IdealCamera unit test tests two images instead of the typical one. Increased tolerances
   *  for line/samp->lat/lon->line/samp
   */
  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[2] = {22.79610724064016, -82.44364258830991};
    double knownLon[2] = {225.0055144115362, 75.87598490596933};
    char files[2][1024] = { "$base/testData/ab102401_ideal.cub", "$base/testData/f319b18_ideal.cub" };
    Camera *cam;

    for(unsigned int i = 0; i < sizeof(knownLat) / sizeof(double); i++) {
      Cube cube(files[i], "r");
      cam = CameraFactory::Create(cube);
      cout << "FileName: " << FileName(files[i]).name() << endl;
      cout << "CK Frame: " << cam->instrumentRotation()->Frame() << 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;
      
      cout.setf(std::ios::fixed);
      cout << setprecision(9);

      // 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(), 1.0);

      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(abs(cam->UniversalLatitude() - knownLat[i]) < 1E-10) {
        cout << "Latitude OK" << endl;
      }
      else {
        cout << setprecision(16) << "Latitude off by: " << cam->UniversalLatitude() - knownLat[i] << endl;
      }

      if(abs(cam->UniversalLongitude() - knownLon[i]) < 1E-10) {
        cout << "Longitude OK" << endl;
      }
      else {
        cout << setprecision(16) << "Longitude off by: " << cam->UniversalLongitude() - knownLon[i] << endl;
      }
      cout << endl << "--------------------------------------------" << endl;
    }

    // Test kernel ID messages
    cout << "Kernel ID error messages: " << endl;
    try{ cam->CkFrameId(); }
    catch (IException e){ e.print(); }
    try{ cam->CkReferenceId(); }
    catch (IException e){ e.print(); }
    try{ cam->SpkTargetId(); }
    catch (IException e){ e.print(); }
    try{ cam->SpkReferenceId(); }
    catch (IException e){ e.print(); }
    delete cam;
  }
  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) < 0.013) deltaSamp = 0;
    if(fabs(deltaLine) < 0.0016) deltaLine = 0;
    cout << "DeltaSample = " << deltaSamp << endl;
    cout << "DeltaLine = " << deltaLine << endl << endl;
  }
  else {
    cout << "DeltaSample = ERROR" << endl;
    cout << "DeltaLine = ERROR" << endl << endl;
  }
}
