/* 
 * Copyright (c) 2009, 2013, 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 "stdafx.h"

#include "mforms/textbox.h"
#include "mforms/checkbox.h"
#include "mforms/label.h"
#include "mforms/splitter.h"

#include "grtui/grt_wizard_plugin.h"
#include "grtui/wizard_progress_page.h"
#include "grtui/wizard_schema_filter_page.h"
#include "grtui/wizard_object_filter_page.h"
#include "grtui/wizard_finished_page.h"
#include "grtui/wizard_view_text_page.h"
#include "grtui/grtdb_connect_panel.h"

#include "base/log.h"
DEFAULT_LOG_DOMAIN("Synchronize")

#include "diff_tree.h"
#include "db_mysql_sql_script_sync.h"

#include "db_mysql_sql_sync.h"

#include "mforms/checkbox.h"

using namespace grtui;
using namespace mforms;


class ConnectionPage;
class FetchSchemaNamesProgressPage;
class SchemaMatchingPage;
class FetchSchemaContentsProgressPage;
class ObjectSelectionPage;
class ReviewScriptPage;
class DBSynchronizeProgressPage;
class FinishPage;


#include "grtui/connection_page.h"

#include "fetch_schema_names_page.h"

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

#include "schema_matching_page.h"

class ModelSchemaMatchingPage : public SchemaMatchingPage
{
  DbMySQLSync *_db_be;
public:
  ModelSchemaMatchingPage(grtui::WizardForm *form, DbMySQLSync *be, const char *name= "selectSchemata",
                          const std::string &left_name = "Model",
                          const std::string &right_name = "Database")
  : SchemaMatchingPage(form, name, left_name, right_name), _db_be(be)
  {
  }

  virtual void enter(bool advancing)
  {
    if (advancing)
    {
      values().set("targetSchemata", values().get("schemata"));

      grt::StringListRef schema_list(wizard()->grtm()->get_grt());
      grt::ListRef<db_Schema> schemas = _db_be->model_catalog()->schemata();
      for (size_t i = 0; i < schemas.count(); i++)
        schema_list.insert(schemas[i]->name());
      values().set("schemata", schema_list);
    }

    SchemaMatchingPage::enter(advancing);
  }

  virtual void leave(bool advancing)
  {
    SchemaMatchingPage::leave(advancing);
    if (advancing)
    {
      // rename the schemas in the model so we can properly compare schemas with a different name
      // once the snc is done, the original name should be restored
      std::map<std::string, std::string> mapping = get_mapping();
      grt::ListRef<db_Schema> schemas = _db_be->model_catalog()->schemata();
      for (size_t i = 0; i < schemas.count(); i++)
      {
        db_SchemaRef schema(schemas[i]);
        if (mapping.find(schema->name()) != mapping.end())
        {
          // save the original name before proceeding so it can be retored before the wizard is closed
          schema->customData().set("db.mysql.synchronize:originalName", schema->name());
          schema->customData().set("db.mysql.synchronize:originalOldName", schema->oldName());

          std::string sname = mapping[schema->name()];
          schema->name(sname);
          schema->oldName(sname);
        }
        else
        {
          // make sure to delete any dangling values
          schema->customData().remove("db.mysql.synchronize:originalName");
          schema->customData().remove("db.mysql.synchronize:originalOldName");
        }
      }
    }
  }
};

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

#include "fetch_schema_contents_page.h"

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

#include "synchronize_differences_page.h"

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

namespace DBSynchronize
{
class WbPluginDbSynchronize : public WizardPlugin
{
  DbMySQLScriptSync _be;
  DbMySQLSync _db_be;

  
  std::vector<std::string> load_schemas()
  {
    std::vector<std::string> schema_names;
    _db_be.load_schemata(schema_names);
    _be.set_db_options(_db_be.load_db_options());
    _be.set_sync_profile_name(_db_be.db_conn()->get_connection()->hostIdentifier());
    return schema_names;
  }

public:
  WbPluginDbSynchronize(grt::Module *module);
  virtual ~WbPluginDbSynchronize()
  {
    _be.restore_overriden_names();
  }
  
  DbMySQLScriptSync *get_be() { return &_be; }

  DbMySQLSync *get_db_be() { return &_db_be; }
};


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

class PreviewScriptPage : public ViewTextPage
{
  ::mforms::CheckBox _model_only;
public:
  PreviewScriptPage(WizardForm *form)
  : ViewTextPage(form, "preview", (ViewTextPage::Buttons)(ViewTextPage::CopyButton|ViewTextPage::SaveButton), "SQL Scripts (*.sql)|*.sql")
  {
    set_title(_("Preview Database Changes to be Applied"));
    set_short_title(_("Review DB Changes"));
    
    set_editable(true);

    _model_only.set_text("Skip DB changes and update model only");
    _button_box.add(&_model_only, true, true);
    
    scoped_connect(signal_leave(),boost::bind(&PreviewScriptPage::apply_changes, this, _1));
  }


  virtual void enter(bool advancing)
  {
    if (advancing)
      set_text(((WbPluginDbSynchronize*)_form)->get_be()->generate_diff_tree_script());
  }
  
  virtual bool advance()
  {
    // check if there is anything to be DROPPED and warn user
    //TODO XXX

    return ViewTextPage::advance();
  }

  void apply_changes(bool advancing)
  {
    values().gset("UpdateModelOnly", _model_only.get_active()?1:0);
    ((WbPluginDbSynchronize*)_form)->get_db_be()->set_option("ScriptToApply", get_text());//TODO: does this seves any purpose any more?
    ((WbPluginDbSynchronize*)_form)->get_db_be()->sql_script(get_text());
  }
  
  virtual std::string next_button_caption() { return execute_caption(); }
};


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

class DBSynchronizeProgressPage : public WizardProgressPage
{
  TaskRow *db_task;
  TaskRow *read_back_task;
  
public:
  DBSynchronizeProgressPage(WbPluginDbSynchronize *form)
    : WizardProgressPage(form, "importProgress", true)
  {    
    set_title(_("Progress of Model and Database Synchronization"));
    set_short_title(_("Synchronize Progress"));

    db_task = add_async_task(_("Apply Changes to Database"),
                   boost::bind(&DBSynchronizeProgressPage::perform_sync_db, this),
                   _("Applying selected changes from model to the database..."));

    read_back_task = add_async_task(_("Read Back Changes Made by Server"),
                   boost::bind(&DBSynchronizeProgressPage::back_sync, this),
                   _("Fetching back object definitions reformatted by server..."));

    add_task(_("Apply Changes to Model"),
             boost::bind(&DBSynchronizeProgressPage::perform_sync_model, this),
             _("Applying selected changes from database to the model..."));

    end_adding_tasks(_("Synchronization Completed Successfully"));

    set_status_text("");
  }


  virtual void enter(bool advancing)
  {    
    if (values().get_int("UpdateModelOnly"))
    {
      db_task->set_enabled(false);
      read_back_task->set_enabled(false);
    }
    else
    {
      db_task->set_enabled(true);
      read_back_task->set_enabled(true);
    }
    WizardProgressPage::enter(advancing);
  }

  bool perform_sync_db()
  {
    _form->grtm()->get_grt()->send_info("Applying synchronization scripts to server...");
    
    execute_grt_task(boost::bind(&Db_plugin::apply_script_to_db, ((WbPluginDbSynchronize*)_form)->get_db_be(), _1), false);
    
    return true;
  }

  bool back_sync()
  {
    execute_grt_task(boost::bind(&DBSynchronizeProgressPage::back_sync_, this), false);
    return true;
  }

  grt::IntegerRef back_sync_()
  {
    ((WbPluginDbSynchronize*)_form)->get_db_be()->read_back_view_ddl();
    return grt::IntegerRef(0);
  }

  bool perform_sync_model()
  {
    _form->grtm()->get_grt()->send_info("Updating model...");
    if (!_got_error_messages)
    {
      ((WbPluginDbSynchronize*)_form)->get_be()->save_sync_profile();
    }
    ((WbPluginDbSynchronize*)_form)->get_be()->apply_changes_to_model();

    return true;
  }  
  
  virtual bool allow_back() { return false; }
  virtual bool allow_cancel() { return false; }

  virtual bool next_closes_wizard() { return true; }
};


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


WbPluginDbSynchronize::WbPluginDbSynchronize(grt::Module *module)
  : WizardPlugin(module), _be(grtm()), _db_be(grtm())
{  
  // add validation here
  
  ConnectionPage *connection_page= new ConnectionPage(this);
  connection_page->set_db_connection(_db_be.db_conn());
  add_page(mforms::manage(connection_page));

  FetchSchemaNamesProgressPage *fetch_progress_page= new FetchSchemaNamesProgressPage(this);
  fetch_progress_page->set_db_connection(_db_be.db_conn());
  fetch_progress_page->set_load_schemas_slot(boost::bind(&WbPluginDbSynchronize::load_schemas, this));
  add_page(mforms::manage(fetch_progress_page));

  SchemaMatchingPage *schema_selection_page= new ModelSchemaMatchingPage(this, &_db_be, "pickSchemata", "Model Schema", "RDBMS Schema");
  add_page(mforms::manage(schema_selection_page));

  FetchSchemaContentsProgressPage *fetch_contents_page= new FetchSchemaContentsProgressPage(this);
  fetch_contents_page->set_db_plugin(&_db_be);
  add_page(mforms::manage(fetch_contents_page));

  SynchronizeDifferencesPage *diffs_page= new SynchronizeDifferencesPage(this, &_be);
  diffs_page->set_title(_("Model and Database Differences"));
  diffs_page->set_catalog_getter_slot(boost::bind(&Db_plugin::model_catalog, &_db_be),
                                      boost::bind(&Db_plugin::db_catalog, &_db_be));
  add_page(mforms::manage(diffs_page));
  
  add_page(mforms::manage(new PreviewScriptPage(this)));
  add_page(mforms::manage(new DBSynchronizeProgressPage(this)));

  set_title("Synchronize Model with Database");
}


}; // namespace DBSynchronize

grtui::WizardPlugin *createDbSynchronizeWizard(grt::Module *module, db_CatalogRef catalog)
{
  grt::LeakDetector::reset();
  grt::LeakDetector::enable();
  return new DBSynchronize::WbPluginDbSynchronize(module);
}

void deleteDbSynchronizeWizard(grtui::WizardPlugin *plugin)
{
  delete plugin;
  //grt::LeakDetector::disable();
  grt::LeakDetector::update_objects_data();
  grt::LeakDetector::print_leaks();
}
