#include "tfarmcontroller.h"

#include "tfarmexecutor.h"

#include "tfarmserver.h"

#include "tsystem.h"

#include "tconvert.h"

#include "tfilepath_io.h"

#include "service.h"

#include "tcli.h"

#include "tversion.h"

using namespace TVER;

#include "tthreadmessage.h"

#include "tthread.h"

#include "tstream.h"

#include "tlog.h"

#include <qobject></qobject>

#include <qcoreapplication></qcoreapplication>

#include <qeventloop></qeventloop>

#include "tthread.h"

#include <sstream></sstream>

#include <string></string>

using namespace std;

#ifndef _WIN32

#include <sys param.h=""></sys>

#include <unistd.h></unistd.h>

#endif

int inline STRICMP(const QString &a, const QString &b) {

  return a.compare(b, Qt::CaseSensitive);

}

int inline STRICMP(const char *a, const char *b) {

  QString str(a);

  return str.compare(QString(b), Qt::CaseSensitive);

}

/*

#ifdef _WIN32

#define STRICMP stricmp

#else

#define STRICMP strcasecmp

#endif

*/

#ifndef _WIN32

#define NO_ERROR 0

#endif

//==============================================================================

namespace {

TFilePath getGlobalRoot() {

  TVER::ToonzVersion tver;

  TFilePath rootDir;

#ifdef _WIN32

  std::string regpath = "SOFTWARE\\" + tver.getAppName() + "\\" +

                        tver.getAppName() + "\\" + tver.getAppVersionString() +

                        "\\FARMROOT";

  TFilePath name(regpath);

  rootDir = TFilePath(TSystem::getSystemValue(name).toStdString());

#else

// Leggo la globalRoot da File txt

#ifdef MACOSX

  // If MACOSX, change to MACOSX path

  std::string unixpath = "./" + tver.getAppName() +

                         ".app/Contents/Resources/configfarmroot.txt";

#else

  // set path to something suitable for most linux (Unix?) systems

  std::string unixpath = "/etc/" + tver.getAppName() + "/opentoonz.conf";

#endif

  TFilePath name(unixpath);

  Tifstream is(name);

  if (is) {

    char line[1024];

    is.getline(line, 80);

    char *s = line;

    while (*s == ' ' || *s == '\t' || *s == '\n' || *s == '\"') s++;

    if (*s != '\0') {

      char *t = s;

      while (*t) t++;

      string pathName(s, t - 1);

      rootDir = TFilePath(pathName);

    }

  }

#endif

  return rootDir;

}

//--------------------------------------------------------------------

TFilePath getLocalRoot() {

  TVER::ToonzVersion tver;

  TFilePath lroot;

#ifdef _WIN32

  std::string regpath = "SOFTWARE\\" + tver.getAppName() + "\\" + tver.getAppName() +

                   "\\" + tver.getAppVersionString() + "\\FARMROOT";

  TFilePath name(regpath);

  lroot = TFilePath(TSystem::getSystemValue(name).toStdString()) +

          TFilePath("toonzfarm");

#else

// Leggo la localRoot da File txt

#ifdef MACOSX

  // If MACOSX, change to MACOSX path

  std::string unixpath = "./" + tver.getAppName() +

                         ".app/Contents/Resources/configfarmroot.txt";

#else

  // set path to something suitable for most linux (Unix?) systems

#ifdef FREEBSD

  std::string unixpath = "/usr/local/etc/" + tver.getAppName() + "/opentoonz.conf";

#else

  std::string unixpath = "/etc/" + tver.getAppName() + "/opentoonz.conf";

#endif

#endif

  TFilePath name(unixpath);

  Tifstream is(name);

  if (is) {

    char line[1024];

    is.getline(line, 80);

    char *s = line;

    while (*s == ' ' || *s == '\t' || *s == '\n' || *s == '\"') s++;

    if (*s != '\0') {

      char *t = s;

      while (*t) t++;

      string pathName(s, t - 1);

      lroot = TFilePath(pathName);

    }

  }

#endif

  return lroot;

}

//--------------------------------------------------------------------

bool myDoesExists(const TFilePath &fp) {

  bool exists = false;

#ifdef _WIN32

  TFileStatus fs(fp);

  exists = fs.doesExist();

#else

  int acc = access(::to_string(fp).c_str(), 00);  // 00 == solo esistenza

  exists  = acc != -1;

#endif

  return exists;

}

//--------------------------------------------------------------------

bool dirExists(const TFilePath &dirFp) {

  bool exists = false;

#ifdef _WIN32

  TFileStatus fs(dirFp);

  exists = fs.isDirectory();

#else

  int acc = access(::to_string(dirFp).c_str(), 00);  // 00 == solo esistenza

  exists  = acc != -1;

#endif

  return exists;

}

//-------------------------------------------------------------------

bool loadControllerData(QString &hostName, QString &addr, int &port) {

  TFilePath groot = getGlobalRoot();

  TFilePath fp    = groot + "config" + "controller.txt";

  ControllerData controllerData;

  ::loadControllerData(fp, controllerData);

  hostName = controllerData.m_hostName;

  addr     = controllerData.m_ipAddress;

  port     = controllerData.m_port;

  return true;

}

//-------------------------------------------------------------------

bool isAScript(TFarmTask *task) {

  return false;  // todo per gli script

}

}  // anonymous namespace

//==============================================================================

class CtrlFarmTask final : public TFarmTask {

public:

  CtrlFarmTask() : m_toBeDeleted(false), m_failureCount(0) {}

  CtrlFarmTask(const QString &id, const QString &name, const QString &cmdline,

               const QString &user, const QString &host, int stepCount,

               int priority)

      : TFarmTask(id, name, cmdline, user, host, stepCount, priority)

      , m_toBeDeleted(false)

      , m_failureCount(0) {

    m_id     = id;

    m_status = Waiting;

  }

  CtrlFarmTask(const CtrlFarmTask &rhs) : TFarmTask(rhs) {

    m_serverId    = rhs.m_serverId;

    m_subTasks    = rhs.m_subTasks;

    m_toBeDeleted = rhs.m_toBeDeleted;

  }

  // TPersist implementation

  void loadData(TIStream &is) override;

  void saveData(TOStream &os) override;

  const TPersistDeclaration *getDeclaration() const override;

  QString m_serverId;

  vector<qstring> m_subTasks;</qstring>

  bool m_toBeDeleted;

  int m_failureCount;

  vector<qstring> m_failedOnServers;</qstring>

};

namespace {

class TFarmTaskDeclaration final : public TPersistDeclaration {

public:

  TFarmTaskDeclaration(const std::string &id) : TPersistDeclaration(id) {}

  TPersist *create() const override { return new CtrlFarmTask; }

} Declaration("tfarmtask");

}  // namespace

//------------------------------------------------------------------------------

void CtrlFarmTask::loadData(TIStream &is) {

  is >> m_name;

  QString cmdline;

  is >> cmdline;

  parseCommandLine(cmdline);

  is >> m_priority;

  is >> m_user;

  is >> m_hostName;

  is >> m_id;

  is >> m_parentId;

  int status;

  is >> status;

  m_status = (TaskState)status;

  is >> m_server;

  QString dateStr;

  is >> dateStr;

  m_submissionDate = QDateTime::fromString(dateStr);

  is >> dateStr;

  m_startDate = QDateTime::fromString(dateStr);

  is >> dateStr;

  m_completionDate = QDateTime::fromString(dateStr);

  is >> m_successfullSteps;

  is >> m_failedSteps;

  is >> m_stepCount;

  is >> m_serverId;

  string tagName;

  while (is.openChild(tagName)) {

    if (tagName == "platform") {

      int plat;

      is >> plat;

      switch (plat) {

      case NoPlatform:

        m_platform = NoPlatform;

        break;

      case Windows:

        m_platform = Windows;

        break;

      case Irix:

        m_platform = Irix;

        break;

      case Linux:

        m_platform = Linux;

        break;

      }

    } else if (tagName == "dependencies") {

      int depCount = 0;

      is >> depCount;

      if (depCount > 0) m_dependencies = new Dependencies();

      while (depCount > 0) {

        TFarmTask::Id id;

        is >> id;

        m_dependencies->add(id);

        depCount--;

      }

    }

    is.closeChild();

  }

}

//------------------------------------------------------------------------------

void CtrlFarmTask::saveData(TOStream &os) {

  os << m_name;

  os << getCommandLine();

  os << m_priority;

  os << m_user;

  os << m_hostName;

  os << m_id;

  os << m_parentId;

  os << (int)m_status;

  os << m_server;

  os << m_submissionDate.toString();

  os << m_startDate.toString();

  os << m_completionDate.toString();

  os << m_successfullSteps;

  os << m_failedSteps;

  os << m_stepCount;

  os << m_serverId;

  os.openChild("platform");

  os << m_platform;

  os.closeChild();

  os.openChild("dependencies");

  if (m_dependencies) {

    int depCount = m_dependencies->getTaskCount();

    os << depCount;

    int i = 0;

    while (i < depCount) {

      TFarmTask::Id id = m_dependencies->getTaskId(i++);

      os << id;

    }

  } else

    os << 0;

  os.closeChild();

}

//------------------------------------------------------------------------------

const TPersistDeclaration *CtrlFarmTask::getDeclaration() const {

  return &Declaration;

}

//==============================================================================

class FarmServerProxy {

public:

  FarmServerProxy(const QString &hostName, const QString &addr, int port,

                  int maxTaskCount = 1)

      : m_hostName(hostName)

      , m_addr(addr)

      , m_port(port)

      , m_offline(false)

      , m_attached(false)

      , m_maxTaskCount(maxTaskCount)

      , m_platform(NoPlatform) {

    TFarmServerFactory serverFactory;

    serverFactory.create(m_hostName, m_addr, m_port, &m_server);

  }

  ~FarmServerProxy() {}

  QString getId() const { return getIpAddress(); }

  QString getHostName() const { return m_hostName; }

  QString getIpAddress() const { return m_addr; }

  int getPort() const { return m_port; }

  const vector<qstring> &getTasks() const { return m_tasks; }</qstring>

  int addTask(const CtrlFarmTask *task);

  void terminateTask(const QString &taskId);

  // e' possibile rimuovere un task solo se non running

  void removeTask(const QString &taskId);

  bool testConnection(int timeout);

  void queryHwInfo(TFarmServer::HwInfo &hwInfo) {

    m_server->queryHwInfo(hwInfo);

  }

  void attachController(const QString &name, const QString &addr, int port) {

    m_server->attachController(name, addr, port);

  }

  void detachController(const QString &name, const QString &addr, int port) {

    m_server->detachController(name, addr, port);

  }

  QString m_hostName;

  QString m_addr;

  int m_port;

  bool m_offline;

  bool m_attached;

  int m_maxTaskCount;

  TFarmPlatform m_platform;

  // vettore dei taskId assegnato al server

  vector<qstring> m_tasks;</qstring>

  TFarmServer *m_server;

};

//------------------------------------------------------------------------------

int FarmServerProxy::addTask(const CtrlFarmTask *task) {

  int rc = m_server->addTask(task->m_id, task->getCommandLine());

  if (rc == 0) m_tasks.push_back(task->m_id);

  return rc;

}

//------------------------------------------------------------------------------

void FarmServerProxy::terminateTask(const QString &taskId) {

  m_server->terminateTask(taskId);

}

//------------------------------------------------------------------------------

void FarmServerProxy::removeTask(const QString &taskId) {

  vector<qstring>::iterator it = find(m_tasks.begin(), m_tasks.end(), taskId);</qstring>

  if (it != m_tasks.end()) {

    m_tasks.erase(it);

  }

}

//------------------------------------------------------------------------------

static bool doTestConnection(const QString &hostName, const QString &addr,

                             int port) {

  TTcpIpClient client;

  int sock;

  int ret = client.connect(hostName, addr, port, sock);

  if (ret == OK) {

#ifdef _WIN32

    closesocket(sock);

#else

    close(sock);

#endif

    return true;

  }

  return false;

}

//------------------------------------------------------------------------------

#ifdef _WIN32

class ConnectionTest final : public TThread::Runnable {

public:

  ConnectionTest(const FarmServerProxy *server, HANDLE hEvent)

      : m_server(server), m_hEvent(hEvent) {}

  void run() override;

  const FarmServerProxy *m_server;

  HANDLE m_hEvent;

};

void ConnectionTest::run() {

  bool res = doTestConnection(m_server->m_hostName, m_server->m_addr,

                              m_server->m_port);

  SetEvent(m_hEvent);

}

#endif

//------------------------------------------------------------------------------

bool FarmServerProxy::testConnection(int timeout) {

#ifdef _WIN32

  HANDLE hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);

  if (!hEvent) {

    // se fallisce la creazione dell'evento ci provo comunque

    // senza timeout

    return doTestConnection(m_hostName, m_addr, m_port);

  }

  TThread::Executor executor;

  executor.addTask(new ConnectionTest(this, hEvent));

  DWORD rr = WaitForSingleObject(hEvent, timeout);

  CloseHandle(hEvent);

  if (rr == WAIT_TIMEOUT)

    return false;

  else

    return true;

#else

  return doTestConnection(m_hostName, m_addr, m_port);

#endif

  TTcpIpClient client;

  int sock;

  int ret = client.connect(m_hostName, m_addr, m_port, sock);

  if (ret == OK) {

#ifdef _WIN32

    closesocket(sock);

#else

    close(sock);

#endif

    return true;

  }

  return false;

}

//==============================================================================

class TaskId {

  int m_id;

  int m_subId;

public:

  TaskId(int id, int subId = -1) : m_id(id), m_subId(subId){};

  TaskId(const QString &id) {

    int pos = id.indexOf(".");

    if (pos != -1) {

      m_id    = id.left(pos).toInt();

      m_subId = id.mid(pos + 1, id.length() - pos).toInt();

    } else {

      m_id    = id.toInt();

      m_subId = -1;

    }

  }

  inline bool operator==(const TaskId &f) const {

    return f.m_id == m_id && f.m_subId == m_subId;

  };

  inline bool operator!=(const TaskId &f) const {

    return (m_id != f.m_id || m_subId != f.m_subId);

  };

  inline bool operator<(const TaskId &f) const {

    return (m_id < f.m_id || (m_id == f.m_id && m_subId < f.m_subId));

  };

  inline bool operator>(const TaskId &f) const { return f < *this; }

  inline bool operator>=(const TaskId &f) const { return !operator<(f); }

  inline bool operator<=(const TaskId &f) const { return !operator>(f); }

  TaskId &operator=(const TaskId &f) {

    m_id    = f.m_id;

    m_subId = f.m_subId;

    return *this;

  }

  // operator string() const;

  QString toString() const {

    QString id(QString::number(m_id));

    if (m_subId >= 0) id += "." + ::QString::number(m_subId);

    return id;

  }

};

//==============================================================================

class FarmController final : public TFarmExecutor, public TFarmController {

public:

  FarmController(const QString &hostName, const QString &addr, int port,

                 TUserLog *log);

  void loadServersData(const TFilePath &globalRoot);

  // TFarmExecutor interface implementation

  QString execute(const vector<qstring> &argv) override;</qstring>

  // TFarmController interface methods implementation

  QString addTask(const QString &name, const QString &cmdline,

                  const QString &user, const QString &host, bool suspended,

                  int priority, TFarmPlatform platform);

  QString addTask(const TFarmTask &task, bool suspended) override;

  void removeTask(const QString &id) override;

  void suspendTask(const QString &id) override;

  void activateTask(const QString &id) override;

  void restartTask(const QString &id) override;

  void getTasks(vector<qstring> &tasks) override;</qstring>

  void getTasks(const QString &parentId, vector<qstring> &tasks) override;</qstring>

  void getTasks(const QString &parentId, vector<taskshortinfo> &tasks) override;</taskshortinfo>

  void queryTaskInfo(const QString &id, TFarmTask &task) override;

  void queryTaskShortInfo(const QString &id, QString &parentId, QString &name,

                          TaskState &status) override;

  // used (by a server) to notify a server start

  void attachServer(const QString &name, const QString &addr,

                    int port) override;

  // used (by a server) to notify a server stop

  void detachServer(const QString &name, const QString &addr,

                    int port) override;

  // used (by a server) to notify a task submission error

  void taskSubmissionError(const QString &taskId, int errCode) override;

  // used by a server to notify a task progress

  void taskProgress(const QString &taskId, int step, int stepCount,

                    int frameNumber, FrameState state) override;

  // used (by a server) to notify a task completion

  void taskCompleted(const QString &taskId, int exitCode) override;

  // fills the servers vector with the names of the servers

  void getServers(vector<serveridentity> &servers) override;</serveridentity>

  // returns the state of the server whose id has been specified

  ServerState queryServerState2(const QString &id) override;

  // fills info with the infoes about the server whose id is specified

  void queryServerInfo(const QString &id, ServerInfo &info) override;

  // activates the server whose id has been specified

  void activateServer(const QString &id) override;

  // deactivates the server whose id has been specified

  // once deactivated, a server is not available for task rendering

  void deactivateServer(const QString &id, bool completeRunningTasks) override;

  // FarmController specific methods

  CtrlFarmTask *doAddTask(const QString &id, const QString &parentId,

                          const QString &name, const QString &cmdline,

                          const QString &user, const QString &host,

                          bool suspended, int stepCount, int priority,

                          TFarmPlatform platform);

  void startTask(CtrlFarmTask *task, FarmServerProxy *server);

  CtrlFarmTask *getTaskToStart(FarmServerProxy *server = 0);

  CtrlFarmTask *getNextTaskToStart(CtrlFarmTask *task, FarmServerProxy *server);

  // looks for a ready server to which to assign the task

  // returns true iff the task has been started

  bool tryToStartTask(CtrlFarmTask *task);

  ServerState getServerState(FarmServerProxy *server, QString &taskId);

  void initServer(FarmServerProxy *server);

  void load(const TFilePath &fp);

  void save(const TFilePath &fp) const;

  void doRestartTask(const QString &id, bool fromClient,

                     FarmServerProxy *server);

  void activateReadyServers();

  // controller name, address and port

  QString m_hostName;

  QString m_addr;

  int m_port;

  TUserLog *m_userLog;

  map<taskid, *="" ctrlfarmtask=""> m_tasks;</taskid,>

  map<qstring, *="" farmserverproxy=""> m_servers;</qstring,>

  TThread::Mutex m_mutex;

  static int NextTaskId;

};

int FarmController::NextTaskId = 0;

//------------------------------------------------------------------------------

FarmController::FarmController(const QString &hostName, const QString &addr,

                               int port, TUserLog *log)

    : TFarmExecutor(port)

    , m_hostName(hostName)

    , m_addr(addr)

    , m_port(port)

    , m_userLog(log) {

  TFilePath rootDir            = getGlobalRoot();

  TFilePath lastUsedIdFilePath = rootDir + "config" + "id.txt";

  Tifstream is(lastUsedIdFilePath);

  if (is.good()) is >> NextTaskId;

}

//------------------------------------------------------------------------------

void FarmController::loadServersData(const TFilePath &globalRoot) {

  TFilePath fp = globalRoot + "config" + "servers.txt";

  Tifstream is(fp);

  while (!is.eof()) {

    char line[80];

    is.getline(line, 80);

    if (line[0] != '#' && QString(line) != "") {

      stringstream iss(line);

      char hostName[512];

      char ipAddr[80];

      int port;

      iss >> hostName >> ipAddr >> port;

      FarmServerProxy *server = new FarmServerProxy(hostName, ipAddr, port);

      m_servers.insert(make_pair(QString(ipAddr), server));

      if (server->testConnection(500)) {

        initServer(server);

        try {

          server->attachController(m_hostName, m_addr, m_port);

        } catch (TException &) {

        }

      }

    }

  }

}

//------------------------------------------------------------------------------

namespace {

inline QString toString(const TFarmTask &task, int ver) {

  QString ss = task.m_name + ",";

  ss += task.getCommandLine() + ",";

  ss += QString::number((int)(task.m_priority)) + ",";

  ss += task.m_user + ",";

  ss += task.m_hostName + ",";

  ss += task.m_id + ",";

  ss += task.m_parentId + ",";

  ss += QString::number((int)(task.m_status)) + ",";

  ss += task.m_server + ",";

  ss += task.m_submissionDate.toString() + ",";

  ss += task.m_startDate.toString() + ",";

  ss += task.m_completionDate.toString() + ",";

  ss += QString::number(task.m_successfullSteps) + ",";

  ss += QString::number(task.m_failedSteps) + ",";

  ss += QString::number(task.m_stepCount);

  if (ver == 2) {

    ss += ",";

    ss += QString::number(task.m_platform) + ",";

    int depCount = 0;

    if (task.m_dependencies) depCount= task.m_dependencies->getTaskCount();

    ss += QString::number(depCount);

    for (int i = 0; i < depCount; ++i) {

      TFarmTask::Id id = task.m_dependencies->getTaskId(i);

      ss += "," + id;

    }

  }

  ss += '\0';

  return ss;

}

inline QString toString(const ServerInfo &info) {

  QString ss = info.m_name + ",";

  ss += info.m_ipAddress + ",";

  ss += info.m_portNumber + ",";

  ss += QString::number((int)(info.m_state)) + ",";

  ss += info.m_platform + ",";

  ss += QString::number((int)info.m_cpuCount) + ",";

  ss += QString::number((int)info.m_totPhysMem) + ",";

  ss += QString::number((int)info.m_totVirtMem) + ",";

  ss += QString::number((int)info.m_availPhysMem) + ",";

  ss += QString::number((int)info.m_availVirtMem) + ",";

  ss += info.m_currentTaskId + '\0';

  return ss;

}

}  // anonymous namespace

//------------------------------------------------------------------------------

QString FarmController::execute(const vector<qstring> &argv) {</qstring>

  QMutexLocker sl(&m_mutex);

  if (argv.size() > 0) {

#ifdef TRACE

    for (int i = 0; i < argv.size(); i++) {

      m_userLog->info(argv[i]);

    }

    m_userLog->info('\n');

#endif

    if (argv[0] == "addTask@string@string" && argv.size() > 5) {

      // ordine degli argomenti:

      // name, cmdline, user, host, suspended, priority, platform

      bool suspended;

      fromStr((int &)suspended, argv[5]);

      int priority;

      fromStr(priority, argv[6]);

      TFarmPlatform platform;

      fromStr((int &)platform, argv[7]);

      return addTask(argv[1], argv[2], argv[3], argv[4], suspended, priority,

                     platform);

    } else if (argv[0] == "addTask@TFarmTask" && argv.size() > 5) {

      // ordine degli argomenti:

      // name, cmdline, user, host, suspended, priority,

      bool suspended;

      fromStr((int &)suspended, argv[5]);

      int priority;

      fromStr(priority, argv[6]);

      TFarmTaskGroup task("", argv[1], argv[2], argv[3], argv[4], priority, 50);

      for (int i = 7; i < (int)argv.size(); i += 5) {

        // ordine degli argomenti:

        // name, cmdline, user, host, priority,

        int subTaskPriority;

        fromStr(subTaskPriority, argv[i + 4]);

        TFarmTask *subTask =

            new TFarmTask("", argv[i], argv[i + 1], argv[i + 2], argv[i + 3],

                          subTaskPriority, 50);

        task.addTask(subTask);

      }

      return addTask(task, suspended);

    } else if (argv[0] == "addTask@TFarmTask_2" && argv.size() > 7) {

      // ordine degli argomenti:

      // name, cmdline, user, host, suspended, stepCount, priority, platform

      int suspended;

      fromStr(suspended, argv[5]);

      int stepCount;

      fromStr(stepCount, argv[6]);

      int priority;

      fromStr(priority, argv[7]);

      TFarmPlatform platform;

      fromStr((int &)platform, argv[8]);