/*************************************************************************/
/*  export.cpp                                                           */
/*************************************************************************/
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/*                           PANDEMONIUM ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
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#include "web_server_simple.h"

#include "core/os/os.h"
#include "http_server_simple.h"

int WebServerSimple::get_bind_port() {
	return _bind_port;
}
void WebServerSimple::set_bind_port(const int val) {
	ERR_FAIL_COND(_running);

	_bind_port = val;
}

String WebServerSimple::get_bind_host() {
	return _bind_host;
}
void WebServerSimple::set_bind_host(const String &val) {
	ERR_FAIL_COND(_running);

	_bind_host = val;
}

bool WebServerSimple::get_use_ssl() {
	return _use_ssl;
}
void WebServerSimple::set_use_ssl(const bool val) {
	ERR_FAIL_COND(_running);

	_use_ssl = val;
}

String WebServerSimple::get_ssl_key() {
	return _ssl_key;
}
void WebServerSimple::set_ssl_key(const String &val) {
	ERR_FAIL_COND(_running);

	_ssl_key = val;
}

String WebServerSimple::get_ssl_cert() {
	return _ssl_cert;
}
void WebServerSimple::set_ssl_cert(const String &val) {
	ERR_FAIL_COND(_running);

	_ssl_cert = val;
}

bool WebServerSimple::get_use_poll_thread() {
	return _use_poll_thread;
}
void WebServerSimple::set_use_poll_thread(const bool val) {
	ERR_FAIL_COND(_running);

	_use_poll_thread = val;
}

bool WebServerSimple::get_use_worker_threads() {
	return _use_worker_threads;
}
void WebServerSimple::set_use_worker_threads(const bool val) {
	ERR_FAIL_COND(_running);

	_use_worker_threads = val;
}

int WebServerSimple::get_worker_thread_count() {
	return _worker_thread_count;
}
void WebServerSimple::set_worker_thread_count(const int val) {
	ERR_FAIL_COND(_running);

	_worker_thread_count = val;
}

bool WebServerSimple::is_running() const {
	return _is_running;
}

void WebServerSimple::_start() {
	ERR_FAIL_COND(_running);

	WebServer::_start();

	if (!OS::get_singleton()->can_use_threads()) {
		server->_use_worker_threads = false;
	} else {
		server->_use_worker_threads = _use_worker_threads;
	}

	if (_worker_thread_count <= 0) {
		server->_thread_count = OS::get_singleton()->get_processor_count();
	} else {
		server->_thread_count = _worker_thread_count;
	}

	const uint16_t bind_port = _bind_port;
	// Resolve host if needed.
	const String bind_host = _bind_host;
	IP_Address bind_ip;

	if (bind_host.is_valid_ip_address()) {
		bind_ip = bind_host;
	} else {
		bind_ip = IP::get_singleton()->resolve_hostname(bind_host);
	}

	ERR_FAIL_COND(!bind_ip.is_valid());

	const bool use_ssl = _use_ssl;
	const String ssl_key = _ssl_key;
	const String ssl_cert = _ssl_cert;

	Error err;

	// Restart server.
	server_lock.lock();

	server->stop();
	err = server->listen(bind_port, bind_ip, use_ssl, ssl_key, ssl_cert);

	server_lock.unlock();

	ERR_FAIL_COND_MSG(err != OK, "Error starting HTTP server:\n" + itos(err));

	_running = true;

	if (!_use_poll_thread || !OS::get_singleton()->can_use_threads()) {
		set_process_internal(true);

		_single_threaded_poll = true;
	} else {
		_poll_thread = memnew(Thread);
		_poll_thread->start(_server_thread_poll, this);

		_single_threaded_poll = false;
	}
}

void WebServerSimple::_stop() {
	ERR_FAIL_COND(!_running);

	WebServer::_stop();

	server_lock.lock();

	server->stop();

	if (_poll_thread) {
		_poll_thread->wait_to_finish();
		memdelete(_poll_thread);
		_poll_thread = nullptr;
	}

	set_process_internal(false);

	_running = false;
	server_lock.unlock();
}

WebServerSimple::WebServerSimple() {
	_bind_port = 8080;
	_bind_host = "127.0.0.1";

	_use_ssl = false;

	_use_worker_threads = true;
	_use_poll_thread = true;
	_poll_thread = nullptr;
	_worker_thread_count = 4;

	_running = false;

	server_quit = false;

	server.instance();
	server->_web_server = this;
}

WebServerSimple::~WebServerSimple() {
	server->stop();
	server_quit = true;

	if (_poll_thread) {
		_poll_thread->wait_to_finish();
		memdelete(_poll_thread);
	}
}

void WebServerSimple::_notification(int p_what) {
	if (p_what == NOTIFICATION_INTERNAL_PROCESS) {
		if (_single_threaded_poll) {
			server_lock.lock();
			server->poll();
			server_lock.unlock();
		}
	}
}

void WebServerSimple::_bind_methods() {
	ClassDB::bind_method(D_METHOD("get_bind_port"), &WebServerSimple::get_bind_port);
	ClassDB::bind_method(D_METHOD("set_bind_port", "val"), &WebServerSimple::set_bind_port);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "bind_port"), "set_bind_port", "get_bind_port");

	ClassDB::bind_method(D_METHOD("get_bind_host"), &WebServerSimple::get_bind_host);
	ClassDB::bind_method(D_METHOD("set_bind_host", "val"), &WebServerSimple::set_bind_host);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "bind_host"), "set_bind_host", "get_bind_host");

	ClassDB::bind_method(D_METHOD("get_use_ssl"), &WebServerSimple::get_use_ssl);
	ClassDB::bind_method(D_METHOD("set_use_ssl", "val"), &WebServerSimple::set_use_ssl);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_ssl"), "set_use_ssl", "get_use_ssl");

	ClassDB::bind_method(D_METHOD("get_ssl_key"), &WebServerSimple::get_ssl_key);
	ClassDB::bind_method(D_METHOD("set_ssl_key", "val"), &WebServerSimple::set_ssl_key);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "ssl_key"), "set_ssl_key", "get_ssl_key");

	ClassDB::bind_method(D_METHOD("get_ssl_cert"), &WebServerSimple::get_ssl_cert);
	ClassDB::bind_method(D_METHOD("set_ssl_cert", "val"), &WebServerSimple::set_ssl_cert);
	ADD_PROPERTY(PropertyInfo(Variant::STRING, "ssl_cert"), "set_ssl_cert", "get_ssl_cert");

	ClassDB::bind_method(D_METHOD("get_use_poll_thread"), &WebServerSimple::get_use_poll_thread);
	ClassDB::bind_method(D_METHOD("set_use_poll_thread", "val"), &WebServerSimple::set_use_poll_thread);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_poll_thread"), "set_use_poll_thread", "get_use_poll_thread");

	ClassDB::bind_method(D_METHOD("get_use_worker_threads"), &WebServerSimple::get_use_worker_threads);
	ClassDB::bind_method(D_METHOD("set_use_worker_threads", "val"), &WebServerSimple::set_use_worker_threads);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_worker_threads"), "set_use_worker_threads", "get_use_worker_threads");

	ClassDB::bind_method(D_METHOD("get_worker_thread_count"), &WebServerSimple::get_worker_thread_count);
	ClassDB::bind_method(D_METHOD("set_worker_thread_count", "val"), &WebServerSimple::set_worker_thread_count);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "worker_thread_count"), "set_worker_thread_count", "get_worker_thread_count");

	ClassDB::bind_method(D_METHOD("is_running"), &WebServerSimple::is_running);
}

void WebServerSimple::_server_thread_poll(void *data) {
	WebServerSimple *ej = (WebServerSimple *)data;
	while (!ej->server_quit) {
		OS::get_singleton()->delay_usec(1000);

		ej->server_lock.lock();
		ej->server->poll();
		ej->server_lock.unlock();
	}
}