/* 
 * Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.
 *
 * This program 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; version 2 of the
 * License.
 * 
 * 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., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301  USA
 */

#include "grt_message_list.h"
#include "grt_manager.h"
#include "validation_manager.h"
#include "base/string_utilities.h"

using namespace bec;

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

MessageListStorage::MessageListStorage(GRTManager *grtm)
: _grtm(grtm)
{
  _error_icon= IconManager::get_instance()->get_icon_id("mini_error.png");
  _warning_icon= IconManager::get_instance()->get_icon_id("mini_warning.png");
  _info_icon= IconManager::get_instance()->get_icon_id("mini_notice.png");
  
  scoped_connect(ValidationManager::signal_notify(),boost::bind(&MessageListStorage::validation_notify, this, _1, _2, _3, _4));
}

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

MessageListBE *MessageListStorage::create_list(const std::string &filter_to_source)
{
  MessageListBE *list= new MessageListBE(this);
  
  return list;
}

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

void MessageListStorage::clear_all()
{
  _entries.clear();
}

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

void MessageListStorage::handle_message(const grt::Message &msg)
{
  if (msg.type == grt::OutputMsg)
  {
    if (_output_handler)
      _grtm->run_once_when_idle(boost::bind(_output_handler,msg.text));
    return;
  }
  
  MessageEntryRef entry(new MessageEntry());
  
  switch (msg.type)
  {
    case grt::ErrorMsg:
      entry->icon= _error_icon; 
      break;
    case grt::WarningMsg:
      entry->icon= _warning_icon;
      break;
    case grt::InfoMsg: 
      entry->icon= _info_icon;
      break;
    case grt::ControlMsg:
      entry->icon = -1; // hack
      break;
    case grt::ProgressMsg:
      // ignore
      return;

    default: entry->icon= 0; break;
  }
  entry->type = msg.type;
  entry->timestamp= msg.timestamp;
  entry->message= msg.text;
  std::string::size_type end= entry->message.size();
  while (end > 0 && entry->message[end-1] == '\n') --end;
  entry->message= entry->message.substr(0, end);
  entry->detail= msg.detail;
  if (entry->icon >= 0)
    _entries.push_back(entry);
  _new_message(entry);
}

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

void MessageListStorage::set_output_handler(const boost::function<void(std::string)> &handler)
{
  _output_handler = handler;
}

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

void MessageListStorage::validation_notify(const grt::Validator::Tag&, const grt::ObjectRef& o, const std::string& m, const int level)
{
  if (level != grt::NoErrorMsg)
  {
    grt::Message msg;
    
    msg.type = (grt::MessageType)level;
    msg.timestamp = time(NULL);
    msg.text = m;
    msg.progress = 0.0;
    
    handle_message(msg);
  }
}

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

MessageListBE::MessageListBE(MessageListStorage *owner)
: _owner(owner)
{
  _notified= false;

  _conn = _owner->signal_new_message()->connect(boost::bind(&MessageListBE::add_message, this, _1));
}

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

void MessageListBE::add_message(MessageListStorage::MessageEntryRef message)
{
  if (message->icon == -1)
    return; // Ignore control messages.

  if (!_owner->_grtm->in_main_thread())
  {
    _owner->_grtm->run_once_when_idle(boost::bind(&MessageListBE::add_message, this, message));
    return;
  }
  if (_wanted_sources.empty() || _wanted_sources.find(message->source) != _wanted_sources.end())
  {
    _entries.push_back(message);
    (*signal_row_added())();
  }
}

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

void MessageListBE::add_source(const std::string &source)
{
  _wanted_sources.insert(source);
}

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

void MessageListBE::remove_source(const std::string &source)
{
  _wanted_sources.erase(source);
}

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

void MessageListBE::clear()
{
  _entries.clear();
}

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

size_t MessageListBE::count_children(const NodeId &node)
{
  if (node.depth() == 0)
    return (int)_entries.size();
  return 0;
}

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

bool MessageListBE::get_field(const NodeId &node, ColumnId column, std::string &value)
{
  switch ((Column)column)
  {
  case Time:
    if (node[0] < _entries.size())
    {
      char buffer[100];
      const struct tm *tm= localtime(&_entries[node[0]]->timestamp);
      
      strftime(buffer, sizeof(buffer), "%H:%M:%S", tm);
      value= buffer;
      return true;
    }
    break;

  case Message:
    if (node[0] < _entries.size())
    {
      value= _entries[node[0]]->message;
      return true;
    }
    break;
  case Detail:
    if (node[0] < _entries.size())
    {
      value= _entries[node[0]]->detail;
      return true;
    }
  }
  return false;
}

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

IconId MessageListBE::get_field_icon(const NodeId &node, ColumnId column, IconSize size)
{
  if (node[0] < _entries.size())
    return _entries[node[0]]->icon;

  return 0;
}

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

/**
 *  Returns the type of the message in the list. Since only error, info and warning messages
 *  are handled here only these 3 types are returned.
 */
grt::MessageType bec::MessageListBE::get_message_type( const NodeId &node )
{
  if (node[0] < _entries.size())
    return _entries[node[0]]->type;

  return grt::InfoMsg;
}

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

size_t MessageListBE::count()
{
  _notified= false;
  return _entries.size();
}

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

MenuItemList MessageListBE::get_popup_items_for_nodes(const std::vector<NodeId> &nodes)
{
  MenuItemList menu;
  MenuItem item;

  item.type= bec::MenuAction;
  item.name= "clear_messages";
  item.caption= _("Clear");
  item.enabled= true;
  menu.push_back(item);

  return menu;
}

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

bool MessageListBE::activate_popup_item_for_nodes(const std::string &name, const std::vector<NodeId> &nodes)
{
  if (name == "clear_messages")
  {
    clear();
    do_ui_refresh();
  }
  else
    return false;
  
  return true;
}

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