/*
 *  Copyright (C) 2004-2024 Edward F. Valeev
 *
 *  This file is part of Libint compiler.
 *
 *  Libint compiler is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Libint compiler 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 Libint compiler.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <task.h>

#include <stdexcept>

using namespace std;
using namespace libint2;

LibraryTaskManager::LibraryTaskManager() : current_(-1) {}

LibraryTaskManager LibraryTaskManager::LTM_obj_;

LibraryTaskManager& LibraryTaskManager::Instance() { return LTM_obj_; }

void LibraryTaskManager::add(const std::string& task_label) {
  tasks_citer end = tasks_.end();
  for (tasks_citer t = tasks_.begin(); t != end; ++t) {
    if (t->label() == task_label) return;
  }
  tasks_.push_back(LibraryTask(
      task_label, std::shared_ptr<TaskParameters>(new TaskParameters),
      std::shared_ptr<TaskExternSymbols>(new TaskExternSymbols)));
  // make the first added task current
  if (tasks_.size() == 1) current_ = 0;
}

bool LibraryTaskManager::exists(const std::string& task_label) const {
  tasks_citer end = tasks_.end();
  for (tasks_citer t = tasks_.begin(); t != end; ++t) {
    if (t->label() == task_label) return true;
  }
  return false;
}

LibraryTaskManager::TasksCIter LibraryTaskManager::find(
    const std::string& task_label) const {
  tasks_citer end = tasks_.end();
  for (tasks_citer t = tasks_.begin(); t != end; ++t) {
    if (t->label() == task_label) return t;
  }
  throw ProgrammingError("LibraryTaskManager::find() -- the task not found");
}

void LibraryTaskManager::current(const std::string& task_label) {
  tasks_citer end = tasks_.end();
  for (tasks_citer t = tasks_.begin(); t != end; ++t) {
    if (t->label() == task_label) {
      current_ = t - tasks_.begin();
      return;
    }
  }
  throw std::runtime_error("LibraryTaskManager::current -- unknown task");
}

LibraryTask& LibraryTaskManager::current() {
  if (current_ >= 0)
    return tasks_.at(current_);
  else
    throw std::runtime_error(
        "LibraryTaskManager::current -- current task has not been assigned");
}

////

void TaskExternSymbols::add(const SymbolList& symbols) {
  typedef SymbolList::const_iterator citer;
  citer end = symbols.end();
  for (citer s = symbols.begin(); s != end; ++s) {
    symbols_[*s] = true;
  }
}

void TaskExternSymbols::add(const RRList& rrlist) {
  typedef RRList::const_iterator citer;
  citer end = rrlist.end();
  for (citer rr = rrlist.begin(); rr != end; ++rr) {
    rrmap_[*rr] = true;
  }
}

const TaskExternSymbols::SymbolList& TaskExternSymbols::symbols() const {
  symbollist_.clear();
  typedef Symbols::const_iterator citer;
  citer end = symbols_.end();

  for (citer s = symbols_.begin(); s != end; ++s) {
    symbollist_.push_back(s->first);
  }
  return symbollist_;
}

bool TaskExternSymbols::find(const RRid& rrid) const {
  typedef RRmap::const_iterator citer;
  citer found = rrmap_.find(rrid);
  return (found != rrmap_.end());
}

TaskExternSymbols::RRList TaskExternSymbols::rrlist() const {
  RRList result;
  typedef RRmap::const_iterator citer;
  citer end = rrmap_.end();
  for (citer rr = rrmap_.begin(); rr != end; ++rr) {
    result.push_back(rr->first);
  }
  return result;
}
