/*
Copyright 2010 Grégory Soutadé

This file is part of KissCount.

KissCount 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.

KissCount 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 KissCount.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef DATABASE_H
#define DATABASE_H

#include <stdio.h>
#include <fstream>
#include <list>
#include <wx/wxsqlite3.h>
#include <wx/wx.h>
#include <sha1.h>

#include "model.h"

#define BDD_FILE "kc.bdd"
#define INIT_SCRIPT "init.sql"

class Database
{
 public:
  Database();

  std::list<wxString> GetUsers();
  bool IsValidUser(const wxString& user, const wxString& password);

  User* LoadUser(const wxString& name);
  void LoadYear(User* user, int year);

  void UpdateOperation(Operation& op);
  wxString AddOperation(User* user, Operation& op);
  void DeleteOperation(Operation& op);
  void DeleteOperations(User* user, int month, int year);
  double GetAccountAmount(const wxString& id, int month, int year);
  void SetAccountAmount(int month, int year, const wxString& accountId, double amount);

  wxString AddAccount(User* user, Account& ac);
  void UpdateAccount(Account& ac);
  void DeleteAccount(Account& ac);

  wxString AddCategory(User* user, Category& category);
  void UpdateCategory(Category& category);
  void DeleteCategory(User* user, Category& category);

  std::map<int, std::vector<int> > GetAllOperations(User* user);
  void GenerateMonth(User* user, int monthFrom, int yearFrom, int monthTo, int yearTo);

  void ChangePassword(User* user, const wxString& password);
  bool UserExists(const wxString& name);
  void ChangeName(User* user, const wxString& name);
  void NewUser(const wxString& name);

  void UpdatePreference(User* user, const wxString& preference);

  std::vector<Operation>* Search(User* user, wxString* description, wxDateTime* dateFrom, wxDateTime* dateTo,
				 wxString* amountFrom, wxString* amountTo,
				 std::vector<wxString> categories, std::vector<wxString> accounts);
  
  void GetStats(User* user, const wxString& monthFrom, const wxString& yearFrom, const wxString& monthTo, 
		const wxString& yearTo, std::map<wxString, std::map<int, std::map<int, double> > >* accountAmounts, 
		std::map<wxString, double>* categories);

  void KillMe(User* user);
  bool GetOperation(const wxString& id, Operation* op);
  std::map<wxString, double>* GetNotChecked(User* user, int month, int year);

 private:
  wxSQLite3Database _db;
    
  void CreateDatabase();
  wxString HashPassword(const wxString& password);
  void LinkOrUnlinkOperation(Operation& op);
};

#endif