#pragma once

#define TIMING_START(_name) \
struct { \
	struct entry { \
		std::string name; \
		std::chrono::system_clock::time_point ts; \
	}; \
	 \
	std::string name; \
	std::chrono::system_clock::time_point begin; \
	std::chrono::system_clock::time_point end; \
	std::deque<entry> timings; \
} _name ##_timings; \
_name ##_timings.begin = std::chrono::system_clock::now(); \

#define TIMING_STEP(name, step) \
name ##_timings.timings.push_back({step, std::chrono::system_clock::now()});

#define TIMING_FINISH(_name) \
([&](){ \
	_name ##_timings.end = std::chrono::system_clock::now(); \
	std::string result; \
	result = "timings for " + _name ##_timings.name + ": "; \
	result += std::to_string(std::chrono::duration_cast<std::chrono::milliseconds>(_name ##_timings.end - _name ##_timings.begin).count()) + "ms"; \
	 \
	auto tp = _name ##_timings.begin; \
	for(const auto& entry : _name ##_timings.timings) { \
		result += "\n  "; \
		result += "- " + entry.name + ": "; \
		result += "@" + std::to_string(std::chrono::duration_cast<std::chrono::milliseconds>(entry.ts - _name ##_timings.begin).count()) + "ms"; \
		result += ": " + std::to_string(std::chrono::duration_cast<std::chrono::milliseconds>(entry.ts - tp).count()) + "ms"; \
		tp = entry.ts; \
	} \
	return result; \
})()