#ifndef REQUEST_H
#define REQUEST_H

#include "core/containers/vector.h"
#include "core/string.h"

#include <map>
#include <mutex>

#include "core/object.h"
#include "core/reference.h"

#include "handler_instance.h"

#include "http_enums.h"

class WebApplication;
class Cookie;
class HTTPSession;

class Request {
public:
	WebApplication *application;

	uint32_t current_middleware_index;
	HandlerInstance handler_instance;
	std::vector<HandlerInstance> *middleware_stack;

	String head;
	String body;
	String footer;
	String compiled_body;

	String file_path;
	long file_size;
	long current_file_progress;
	long file_chunk_size;
	bool file_next;

	bool connection_closed;

	HTTPSession *session;
	std::map<String, Object *> data;
	std::map<String, Ref<Reference> > reference_data;

	HTTPSession *get_or_create_session();

	virtual const String get_cookie(const String &key);
	virtual void add_cookie(const ::Cookie &cookie);
	virtual void remove_cookie(const String &key);

	virtual HTTPMethod get_method() const;

	virtual const String get_parameter(const String &key) const;

	virtual void send_redirect(const String &location, const HTTPStatusCode status_code = HTTP_STATUS_CODE_302_FOUND);
	virtual void compile_body();
	virtual void compile_and_send_body();
	virtual void next_stage();
	virtual void send();
	virtual void send_file(const String &p_file_path);
	virtual void send_error(int error_code);
	virtual void reset();
	virtual String parser_get_path();
	virtual String get_host() const;

	void setup_url_stack();
	String get_path() const;
	virtual const String &get_path_full() const;
	const String &get_path_segment(const uint32_t i) const;
	const String &get_current_path_segment() const;
	const String &get_next_path_segment() const;
	uint32_t get_path_segment_count() const;
	uint32_t get_current_segment_index() const;
	uint32_t get_remaining_segment_count() const;
	void pop_path();
	void push_path();

	String get_url_root_parent(const int parent = 1) const;
	String get_url_root() const;
	String get_url_root_current() const;
	String get_url_site() const;

	String get_url_root_parent(const String &add) const;
	String get_url_root(const String &add) const;
	String get_url_site(const String &add) const;
	
	virtual void update();
	virtual void pool();

	Request();
	virtual ~Request();

protected:
	String _full_path;
	Vector<String> _path_stack;
	uint32_t _path_stack_pointer;
};

template <class T>
class RequestPool {
public:
	T *get_request();
	void return_request(T *request);

	RequestPool();
	~RequestPool();

protected:
	std::mutex _mutex;
	std::vector<T *> _requests;
};

template <class T>
T *RequestPool<T>::get_request() {
	_mutex.lock();

	T *request;

	if (_requests.size() == 0) {
		_mutex.unlock();

		request = new T();

		return request;
	}

	request = _requests[_requests.size() - 1];
	_requests.pop_back();

	_mutex.unlock();

	request->reset();

	return request;
}

template <class T>
void RequestPool<T>::return_request(T *request) {
	_mutex.lock();
	_requests.push_back(request);
	_mutex.unlock();
}

template <class T>
RequestPool<T>::RequestPool() {
}

template <class T>
RequestPool<T>::~RequestPool() {
	for (uint32_t i = 0; i < _requests.size(); ++i) {
		delete _requests[i];
	}

	_requests.clear();
}

#endif