/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2012 University of California, Los Angeles
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
 *	   Zhenkai Zhu <zhenkai@cs.ucla.edu>
 */

#include "logging.h"
#include "fetch-task-db.h"

#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
#include <boost/function.hpp>
#include <boost/bind.hpp>

#include <boost/test/unit_test.hpp>
#include <unistd.h>
#include <boost/make_shared.hpp>
#include <iostream>
#include <iterator>
#include <map>
#include <utility>

INIT_LOGGER ("Test.FetchTaskDb");

using namespace Ccnx;
using namespace std;
using namespace boost;
namespace fs = boost::filesystem;

BOOST_AUTO_TEST_SUITE(TestFetchTaskDb)

class Checker
{
public:
  Checker(const Name &deviceName, const Name &baseName, uint64_t minSeqNo, uint64_t maxSeqNo, int priority)
        : m_deviceName(deviceName), m_baseName(baseName), m_minSeqNo(minSeqNo), m_maxSeqNo(maxSeqNo), m_priority(priority)
  {}

  Checker(const Checker &other)
        : m_deviceName(other.m_deviceName), m_baseName(other.m_baseName), m_minSeqNo(other.m_minSeqNo), m_maxSeqNo(other.m_maxSeqNo), m_priority(other.m_priority)
  {}

  bool
  operator==(const Checker &other) { return m_deviceName == other.m_deviceName && m_baseName == other.m_baseName && m_minSeqNo == other.m_minSeqNo && m_maxSeqNo == other.m_maxSeqNo && m_priority == other.m_priority; }

  void show()
  {
    cout << m_deviceName  <<", " << m_baseName << ", " << m_minSeqNo << ", " << m_maxSeqNo << ", " << m_priority << endl;
  }

  Name m_deviceName;
  Name m_baseName;
  uint64_t m_minSeqNo;
  uint64_t m_maxSeqNo;
  int m_priority;
};

map<Name, Checker> checkers;
int g_counter = 0;

void
getChecker(const Name &deviceName, const Name &baseName, uint64_t minSeqNo, uint64_t maxSeqNo, int priority)
{
  Checker checker(deviceName, baseName, minSeqNo, maxSeqNo, priority);
  g_counter ++;
  if (checkers.find(checker.m_deviceName + checker.m_baseName) != checkers.end())
  {
    BOOST_FAIL("duplicated checkers");
  }
  checkers.insert(make_pair(checker.m_deviceName + checker.m_baseName, checker));
}

BOOST_AUTO_TEST_CASE (FetchTaskDbTest)
{
  INIT_LOGGERS ();
  fs::path folder("TaskDbTest");
  fs::create_directories(folder / ".chronoshare");

  FetchTaskDbPtr db = make_shared<FetchTaskDb>(folder, "test");

  map<Name, Checker> m1;
  g_counter = 0;

  checkers.clear();

  Name deviceNamePrefix("/device");
  Name baseNamePrefix("/device/base");

  // add 10 tasks
  for (uint64_t i = 0; i < 10; i++)
  {
    Name d = deviceNamePrefix;
    Name b = baseNamePrefix;
    Checker c(d.appendComp(i), b.appendComp(i), i, 11, 1);
    m1.insert(make_pair(d + b, c));
    db->addTask(c.m_deviceName, c.m_baseName, c.m_minSeqNo, c.m_maxSeqNo, c.m_priority);
  }

  // delete the latter 5
  for (uint64_t i = 5; i < 10; i++)
  {
    Name d = deviceNamePrefix;
    Name b = baseNamePrefix;
    d.appendComp(i);
    b.appendComp(i);
    db->deleteTask(d, b);
  }

  // add back 3 to 7, 3 and 4 should not be added twice

  for (uint64_t i = 3; i < 8; i++)
  {
    Name d = deviceNamePrefix;
    Name b = baseNamePrefix;
    Checker c(d.appendComp(i), b.appendComp(i), i, 11, 1);
    db->addTask(c.m_deviceName, c.m_baseName, c.m_minSeqNo, c.m_maxSeqNo, c.m_priority);
  }

  db->foreachTask(bind(getChecker, _1, _2, _3, _4, _5));

  BOOST_CHECK_EQUAL(g_counter, 8);

  map<Name, Checker>::iterator it = checkers.begin();
  while (it != checkers.end())
  {
    map<Name, Checker>::iterator mt = m1.find(it->first);
    if (mt == m1.end())
    {
      BOOST_FAIL("unknown task found");
    }
    else
    {
      Checker c1 = it->second;
      Checker c2 = mt->second;
      BOOST_CHECK(c1 == c2);
      if (! (c1 == c2))
      {
        cout << "C1: " << endl;
        c1.show();
        cout << "C2: " << endl;
        c2.show();
      }
    }
    ++it;
  }
  fs::remove_all(folder);
}


BOOST_AUTO_TEST_SUITE_END()