/*********************************************************************
*
* Software License Agreement (BSD License)
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*  Copyright (c) 2009, Willow Garage, Inc.
*                2018, Locus Robotics
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* Author: Dave Hershberger
*         David V. Lu!! (nav_2d_utils version)
*********************************************************************/
#include <gtest/gtest.h>
#include <ros/ros.h>
#include <nav_2d_utils/polygons.h>

using nav_2d_utils::polygonFromParams;
using nav_2d_msgs::Polygon2D;

TEST(Polygon2D, unpadded_footprint_from_string_param)
{
  ros::NodeHandle nh("~unpadded");
  Polygon2D footprint = polygonFromParams(nh, "footprint");
  ASSERT_EQ(3U, footprint.points.size());

  EXPECT_EQ(1.0f, footprint.points[ 0 ].x);
  EXPECT_EQ(1.0f, footprint.points[ 0 ].y);

  EXPECT_EQ(-1.0f, footprint.points[ 1 ].x);
  EXPECT_EQ(1.0f, footprint.points[ 1 ].y);

  EXPECT_EQ(-1.0f, footprint.points[ 2 ].x);
  EXPECT_EQ(-1.0f, footprint.points[ 2 ].y);
}

TEST(Polygon2D, check_search_capabilities)
{
  ros::NodeHandle nh("~unpadded/unneccessarily/long_namespace");
  Polygon2D footprint = polygonFromParams(nh, "footprint");
  ASSERT_EQ(3U, footprint.points.size());
  EXPECT_THROW(polygonFromParams(nh, "footprint", false), nav_2d_utils::PolygonParseException);
}

TEST(Polygon2D, footprint_from_xmlrpc_param)
{
  ros::NodeHandle nh("~xmlrpc");
  Polygon2D footprint = polygonFromParams(nh, "footprint");
  ASSERT_EQ(4U, footprint.points.size());

  EXPECT_FLOAT_EQ(0.1f, footprint.points[ 0 ].x);
  EXPECT_FLOAT_EQ(0.1f, footprint.points[ 0 ].y);

  EXPECT_FLOAT_EQ(-0.1f, footprint.points[ 1 ].x);
  EXPECT_FLOAT_EQ(0.1f, footprint.points[ 1 ].y);

  EXPECT_FLOAT_EQ(-0.1f, footprint.points[ 2 ].x);
  EXPECT_FLOAT_EQ(-0.1f, footprint.points[ 2 ].y);

  EXPECT_FLOAT_EQ(0.1f, footprint.points[ 3 ].x);
  EXPECT_FLOAT_EQ(-0.1f, footprint.points[ 3 ].y);

  Polygon2D footprint2 = polygonFromParams(nh, "footprint2");
  ASSERT_TRUE(nav_2d_utils::equals(footprint, footprint2));
}

TEST(Polygon2D, footprint_from_same_level_param)
{
  ros::NodeHandle nh("~same_level");
  Polygon2D footprint = polygonFromParams(nh, "footprint");
  ASSERT_EQ(3U, footprint.points.size());

  EXPECT_EQ(1.0f, footprint.points[ 0 ].x);
  EXPECT_EQ(2.0f, footprint.points[ 0 ].y);

  EXPECT_EQ(3.0f, footprint.points[ 1 ].x);
  EXPECT_EQ(4.0f, footprint.points[ 1 ].y);

  EXPECT_EQ(5.0f, footprint.points[ 2 ].x);
  EXPECT_EQ(6.0f, footprint.points[ 2 ].y);
}

TEST(Polygon2D, footprint_from_xmlrpc_param_failure)
{
  ros::NodeHandle nh("~xmlrpc_fail");
  EXPECT_THROW(polygonFromParams(nh, "footprint"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint2"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint3"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint4"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint5"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint6"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint7"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint8"), nav_2d_utils::PolygonParseException);
  EXPECT_THROW(polygonFromParams(nh, "footprint9"), nav_2d_utils::PolygonParseException);
}

TEST(Polygon2D, footprint_empty)
{
  ros::NodeHandle nh("~empty");
  EXPECT_THROW(polygonFromParams(nh, "footprint"), nav_2d_utils::PolygonParseException);
}

TEST(Polygon2D, test_write)
{
  ros::NodeHandle nh("~unpadded");
  Polygon2D footprint = polygonFromParams(nh, "footprint");
  nh.setParam("another_footprint", nav_2d_utils::polygonToXMLRPC(footprint));
  Polygon2D another_footprint = polygonFromParams(nh, "another_footprint");
  EXPECT_TRUE(nav_2d_utils::equals(footprint, another_footprint));

  nh.setParam("third_footprint", nav_2d_utils::polygonToXMLRPC(footprint, false));
  another_footprint = polygonFromParams(nh, "third_footprint");
  EXPECT_TRUE(nav_2d_utils::equals(footprint, another_footprint));
}

int main(int argc, char** argv)
{
  ros::init(argc, argv, "param_tests");
  testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}