#include <iostream>
#include <fstream>
#include <ctime>
#include <cstring>
#include <cstdlib>

#include "Logger.hpp"
#include "ostream_helpers.h"
#include "defines.hpp"
#include "AwesomeAttractorConfig.h"

#include "Attractor.hpp"
#include "Canvas.hpp"
#include "Image.hpp"
#include "Tonemapper.hpp"

#include <boost/program_options.hpp>
namespace po = boost::program_options;

int verbose = 3;

std::string generate_filename(){
	char filename[64];
	time_t t = time(0);
	struct tm* lt = localtime(&t);
	sprintf(filename, "attractor_%04d-%02d-%02d_%02d-%02d-%02d", lt->tm_year + 1900, lt->tm_mon + 1, lt->tm_mday, lt->tm_hour, lt->tm_min, lt->tm_sec);
	
	return std::string(filename);
}

void render(Attractor & myAttractor, Canvas2D & canvas, unsigned int iterations){
	Progressbar progress(std::cout, "rendering");
	for(unsigned int j = 1; j <= iterations; ++j) {
		for(unsigned int i = 0; i < 1000000; ++i) {
			myAttractor.iterate();
			canvas.plot(myAttractor.projector->projectedPoint);
		}
		progress.show(j, iterations);
	}
}

int main(int argc, char* argv[]) {
	LogInfo("Awesome Attractor, version %s\n", __DATE__);

	verbose = 0;
	std::string attractorFile;
	std::string output_path;
	bool generate_random = false;
	unsigned int iterations, width, height;
	srand(time(0));
	
	po::options_description desc("Usage");
	desc.add_options()
		("help,h", "produce help message")
		("iterations,I", po::value<unsigned int>(&iterations)->default_value(DEFAULT_ITERATIONS), "set number of iterations (in milions)")
		("width,W", po::value<unsigned int>(&width)->default_value(DEFAULT_WIDTH), "width of output image")
		("height,H", po::value<unsigned int>(&height)->default_value(DEFAULT_HEIGHT), "height of output image")
		("input-file,f", po::value<std::string>(&attractorFile)->default_value(""), "attractor file to read")
		("output-path,P", po::value<std::string>(&output_path)->default_value("render/"), "path to output image")
		("random,R", "use random parameters")
	;
	
	po::variables_map vm;
	try {
		po::store(po::parse_command_line(argc, argv, desc), vm);
		po::notify(vm);
	} catch(std::exception & e) {
		std::cout << "Failed to read commandline: " << e.what() << std::endl;
		std::cout << desc << std::endl;
		return 1;
	}
	
	if (vm.count("help") || argc <= 1) {
		std::cout << desc << std::endl;
		return 1;
	}
	
	if(vm.count("random"))	generate_random = true;
	
	std::string filename = output_path + generate_filename();
	
	Logger logger(std::cout);
	Canvas2D canvas(width, height);
	{
		Attractor* my_attractor_ptr = 0;
		if(attractorFile != "")
			my_attractor_ptr = new Attractor(attractorFile);
		else if(generate_random)
			my_attractor_ptr = new Attractor();
		
		if(my_attractor_ptr == 0){
			LogError("Nothing todo\n");
			exit(0);
		}

		my_attractor_ptr->init_range();
		
		logger.start("rendering");
		render(*my_attractor_ptr, canvas, iterations);
		logger.stop();
		
		{
			std::string path(filename + ".stf");
			std::ofstream file(path.c_str());
			file << my_attractor_ptr->stf_output() << std::endl;
		}
		
		delete my_attractor_ptr;
	}

	{
		Tonemappers::GammaCorrector tonemapper;
		tonemapper.analyse(canvas);
	
		logger.start("saving image");
		ImageFormats::png::png_stream image(canvas.size<0>(), canvas.size<1>(), filename + ".png");
		tonemapper.process(canvas, image);
		logger.stop();
	}
}