/*
Copyright (C) 2004 by Intra2net AG

The software in this package is distributed under the GNU General
Public License version 2 (with a special exception described below).

A copy of GNU General Public License (GPL) is included in this distribution,
in the file COPYING.GPL.

As a special exception, if other files instantiate templates or use macros
or inline functions from this file, or you compile this file and link it
with other works to produce a work based on this file, this file
does not by itself cause the resulting work to be covered
by the GNU General Public License.

However the source code for this file must still be made available
in accordance with section (3) of the GNU General Public License.

This exception does not invalidate any other reasons why a work based
on this file might be covered by the GNU General Public License.
*/
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>

#include <iostream>
#include <string>
#include <sstream>
#include <stdexcept>

#include <cppunit/extensions/TestFactoryRegistry.h>
#include <cppunit/ui/text/TestRunner.h>
#include <cppunit/extensions/HelperMacros.h>

#include <boost/archive/binary_oarchive.hpp>
#include <boost/archive/binary_iarchive.hpp>
#include <boost/archive/xml_oarchive.hpp>
#include <boost/archive/xml_iarchive.hpp>
#include <boost/serialization/serialization.hpp>

#include <container.hxx>
#include <socket_client.hxx>
#include <socket_server.hxx>
#include <command_client.hxx>
#include <command_server.hxx>

using namespace std;
using namespace CppUnit;

string testfunc(const string& str)
{
    string ret;
    if (str=="throw")
        throw libt2n::t2n_runtime_error("throw me around");
    if (str=="big")
        ret.insert(0,100*1024,'x');
    else
        ret=str+", testfunc() was here";
    return ret;
}

class testfunc_res : public libt2n::result
{
    private:
        string res;

        friend class boost::serialization::access;
        template<class Archive>
        void serialize(Archive & ar, const unsigned int version)
        {
            ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(libt2n::result);
            ar & BOOST_SERIALIZATION_NVP(res);
        }

    public:
        testfunc_res()
            { }

        testfunc_res(const string& str)
        {
            res=str;
        }

        string get_data()
        {
            return res;
        }
};


class testfunc_cmd : public libt2n::command
{
    private:
        string param;

        friend class boost::serialization::access;
        template<class Archive>
        void serialize(Archive & ar, const unsigned int version)
        {
            ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(libt2n::command);
            ar & BOOST_SERIALIZATION_NVP(param);
        }

    public:
        testfunc_cmd()
            { }

        testfunc_cmd(const string& str)
        {
            param=str;
        }

        libt2n::result* operator()()
        {
            return new testfunc_res(testfunc(param));
        }
};

#include <boost/serialization/export.hpp>

BOOST_CLASS_EXPORT(testfunc_cmd)
BOOST_CLASS_EXPORT(testfunc_res)

using namespace libt2n;

class test_simplecmd : public TestFixture
{
    CPPUNIT_TEST_SUITE(test_simplecmd);

    CPPUNIT_TEST(SimpleCmd);
    CPPUNIT_TEST(SimpleException);
    CPPUNIT_TEST(BigReturn);
    CPPUNIT_TEST(BigParameter);

    CPPUNIT_TEST_SUITE_END();

    pid_t child_pid;

    public:

    void setUp()
    { }

    void tearDown()
    {
        // make sure the server-child is dead before the next test runs
        kill(child_pid,SIGKILL);
        sleep(1);
    }

    void SimpleCmd()
    {
        switch(child_pid=fork())
        {
            case -1:
            {
                CPPUNIT_FAIL("fork error");
                break;
            }
            case 0:
            // child
            {
                try
                {
                    socket_server ss("./socket");
                    command_server cs(ss);

                    // max 10 sec
                    for (int i=0; i < 10; i++)
                        cs.handle(1000000);
                } catch(...)
                {
                    std::cerr << "exception in child. ignoring\n";
                }

                // don't call atexit and stuff
                _exit(0);
            }

            default:
            // parent
            {
                // wait till server is up
                sleep(1);
                socket_client_connection sc("./socket");
                sc.set_logging(&cerr,debug);
                command_client cc(&sc);

                result_container rc;
                cc.send_command(new testfunc_cmd("hello"),rc);

                string ret=dynamic_cast<testfunc_res*>(rc.get_result())->get_data();

                CPPUNIT_ASSERT_EQUAL(string("hello, testfunc() was here"),ret);
            }
        }
    }

    void SimpleException()
    {
        switch(child_pid=fork())
        {
            case -1:
            {
                CPPUNIT_FAIL("fork error");
                break;
            }
            case 0:
            // child
            {
                try
                {
                    socket_server ss("./socket");
                    command_server cs(ss);

                    // max 10 sec
                    for (int i=0; i < 10; i++)
                        cs.handle(1000000);
                } catch(...)
                {
                    std::cerr << "exception in child. ignoring\n";
                }

                // don't call atexit and stuff
                _exit(0);
            }

            default:
            // parent
            {
                // wait till server is up
                sleep(1);
                socket_client_connection sc("./socket");
                sc.set_logging(&cerr,debug);
                command_client cc(&sc);

                result_container rc;
                cc.send_command(new testfunc_cmd("throw"),rc);

                string ret;

                try
                {
                    ret=dynamic_cast<testfunc_res*>(rc.get_result())->get_data();
                }
                catch(t2n_runtime_error &e)
                    { ret=e.what(); }
                catch(...)
                    { throw; }

                CPPUNIT_ASSERT_EQUAL(string("throw me around"),ret);
            }
        }
    }

    void BigReturn()
    {
        switch(child_pid=fork())
        {
            case -1:
            {
                CPPUNIT_FAIL("fork error");
                break;
            }
            case 0:
            // child
            {
                try
                {
                    socket_server ss("./socket");
                    command_server cs(ss);

                    // max 10 sec
                    for (int i=0; i < 10; i++)
                        cs.handle(1000000);
                } catch(...)
                {
                    std::cerr << "exception in child. ignoring\n";
                }

                // don't call atexit and stuff
                _exit(0);
            }

            default:
            // parent
            {
                // wait till server is up
                sleep(1);
                socket_client_connection sc("./socket");
                command_client cc(&sc);

                result_container rc;
                cc.send_command(new testfunc_cmd("big"),rc);

                string ret=dynamic_cast<testfunc_res*>(rc.get_result())->get_data();

                CPPUNIT_ASSERT_EQUAL(string().insert(0,100*1024,'x'),ret);
            }
        }
    }

    void BigParameter()
    {
        switch(child_pid=fork())
        {
            case -1:
            {
                CPPUNIT_FAIL("fork error");
                break;
            }
            case 0:
            // child
            {
                try
                {
                    socket_server ss("./socket");
                    command_server cs(ss);

                    // max 60 sec - we need atleast 28 handle calls to transfer the buffer
                    for (int i=0; i < 60; i++) {
                        cs.handle(1000000);
                }
                } catch(...)
                {
                    std::cerr << "exception in child. ignoring\n";
                }

                // don't call atexit and stuff
                _exit(0);
            }

            default:
            // parent
            {
                // wait till server is up
                sleep(1);
                socket_client_connection sc("./socket");
                command_client cc(&sc);

                result_container rc;
                cc.send_command(new testfunc_cmd(string().insert(0,100*1024,'y')),rc);

                string ret=dynamic_cast<testfunc_res*>(rc.get_result())->get_data();

                CPPUNIT_ASSERT_EQUAL(string().insert(0,100*1024,'y')+", testfunc() was here",ret);
            }
        }
    }

};

CPPUNIT_TEST_SUITE_REGISTRATION(test_simplecmd);