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#include <gtest/gtest.h>
#include <dwb_plugins/simple_goal_checker.h>
#include <dwb_plugins/stopped_goal_checker.h>

using dwb_plugins::SimpleGoalChecker;
using dwb_plugins::StoppedGoalChecker;

void checkMacro(dwb_local_planner::GoalChecker& gc,
                double x0, double y0, double theta0,
                double x1, double y1, double theta1,
                double xv, double yv, double thetav,
                bool expected_result)
{
  gc.reset();
  geometry_msgs::Pose2D pose0, pose1;
  pose0.x = x0;
  pose0.y = y0;
  pose0.theta = theta0;
  pose1.x = x1;
  pose1.y = y1;
  pose1.theta = theta1;
  nav_2d_msgs::Twist2D v;
  v.x = xv;
  v.y = yv;
  v.theta = thetav;
  if (expected_result)
    EXPECT_TRUE(gc.isGoalReached(pose0, pose1, v));
  else
    EXPECT_FALSE(gc.isGoalReached(pose0, pose1, v));
}

void sameResult(dwb_local_planner::GoalChecker& gc0, dwb_local_planner::GoalChecker& gc1,
                double x0, double y0, double theta0,
                double x1, double y1, double theta1,
                double xv, double yv, double thetav,
                bool expected_result)
{
  checkMacro(gc0, x0, y0, theta0, x1, y1, theta1, xv, yv, thetav, expected_result);
  checkMacro(gc1, x0, y0, theta0, x1, y1, theta1, xv, yv, thetav, expected_result);
}

void trueFalse(dwb_local_planner::GoalChecker& gc0, dwb_local_planner::GoalChecker& gc1,
               double x0, double y0, double theta0,
               double x1, double y1, double theta1,
               double xv, double yv, double thetav)
{
  checkMacro(gc0, x0, y0, theta0, x1, y1, theta1, xv, yv, thetav, true);
  checkMacro(gc1, x0, y0, theta0, x1, y1, theta1, xv, yv, thetav, false);
}

TEST(VelocityIterator, two_checks)
{
  ros::NodeHandle x;
  SimpleGoalChecker gc;
  StoppedGoalChecker sgc;
  gc.initialize(x);
  sgc.initialize(x);
  sameResult(gc, sgc, 0, 0, 0, 0, 0, 0, 0, 0, 0, true);
  sameResult(gc, sgc, 0, 0, 0, 1, 0, 0, 0, 0, 0, false);
  sameResult(gc, sgc, 0, 0, 0, 0, 1, 0, 0, 0, 0, false);
  sameResult(gc, sgc, 0, 0, 0, 0, 0, 1, 0, 0, 0, false);
  sameResult(gc, sgc, 0, 0, 3.14, 0, 0, -3.14, 0, 0, 0, true);
  trueFalse(gc, sgc, 0, 0, 3.14, 0, 0, -3.14, 1, 0, 0);
  trueFalse(gc, sgc, 0, 0, 0, 0, 0, 0, 1, 0, 0);
  trueFalse(gc, sgc, 0, 0, 0, 0, 0, 0, 0, 1, 0);
  trueFalse(gc, sgc, 0, 0, 0, 0, 0, 0, 0, 0, 1);
}

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