#include <list>
#include <vector>
#include <mutex>
#include <atomic>
#include <memory>
#include <thread>

#include <ev++.h>

#include "log.h"
#include "worker.h"
#include "message.h"
#include "card.h"
#include "zloop.h"

struct worker_thread: zloop<task*>
{
	std::unique_ptr<std::thread> m_thread;

	worker_thread ()
	{
		m_thread.reset(new std::thread(std::bind(&worker_thread::run,this)));
	}

	void run()
	{
		ev::dynamic_loop::run(0);
		log_info("worker_thread exit....");
	}

	virtual void on_async(const std::list<task*>&task_list)
	{
		for(task*t:task_list)
		{
			do_task(*t);
			free(t);
		}
	}

	void do_task(const task&t)
	{
		switch(t.m_cmd_code)
		{
			case 0x843b://tof
			case 0x863b://tdoa
				log_info("card loc message%04X",t.m_cmd_code);

				card_list::instance()->on_message(this,t.body<message_locinfo>(),false);
				//card_message::on_loc_message(this,t.m_param1);
			break;
			case 0x853b://tof his
			case 0x873b://tdoa his
				log_info("site history message%04X",t.m_cmd_code);
				card_list::instance()->on_message(this,t.body<message_locinfo>(),true);
				//site_message::on_sync(this,t.m_param1);
			break;

			case 0x804c://ctrl site message
				log_info("ctrl site message%04X",t.m_cmd_code);
			break;
		}
	}

	void join()
	{
		m_thread->join();
	}

	void stop()
	{
		async_stop();
	}
};

struct worker_impl:worker
{
	std::vector<std::shared_ptr<worker_thread>> m_threads;
	std::atomic<int> m_init_flag{-2};
	virtual void stop()
	{
		int exp=0;
		if(!m_init_flag.compare_exchange_strong (exp,1))
			return;

		for(auto&thr:m_threads)
			thr->stop();

		for(auto&thr:m_threads)
			thr->join();
	}

	worker_thread& hash(uint64_t i)
	{
		return *m_threads[i*2003%m_threads.size()].get();
	}

	virtual void request(task*t)
	{
		hash(t->m_hash_id).async_request(t);
	}

	void init(int num_thread)
	{
		int exp=-2;
		if(m_init_flag.compare_exchange_strong (exp,-1))
		{
			m_threads.resize(num_thread);
			for(int i=0;i<num_thread;i++)
			{
				m_threads[i].reset(new worker_thread());
			}
			m_init_flag.store(0);
		}

		while(0!=m_init_flag.load())
			std::this_thread::yield();
	}
};

worker_impl _worker_impl;
worker*worker::instance()
{
	_worker_impl.init(1);
	return &_worker_impl;
}