/*
  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(const char* filename);

    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