/*
  Copyright 2010-2012 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/>.
*/

#include <algorithm>

#include <QString>

#include <view/view.hpp>
#include "User.hpp"

User::User(Database* db) : _db(db)
{}

User::~User()
{
    InvalidateOperations();
}

void User::InvalidateOperations()
{
    std::map<unsigned int, std::map<unsigned int, std::vector<Operation> >* >::iterator it;
    std::vector<Category>::iterator it2;
    int i;

    for (it = _operations.begin(); it != _operations.end(); it++)
    {
        if (_operations[it->first])
	{
            delete it->second;
	}
    }

    _operations.clear();

    std::sort(_accounts.begin(), _accounts.end(), Account());
    std::sort(_categories.begin(), _categories.end(), Category());

    for (i=0, it2=_categories.begin(); it2 !=_categories.end(); it2++, i++)
    {
	_categoriesFonts[i] = KissCount::ExtractFont(it2->font);
    }
}

Category User::GetCategory(int catId)
{
    Category cat;
    std::vector<Category>::iterator it = std::find(_categories.begin(), _categories.end(), catId);

    if (it !=_categories.end()) return *it;

    if (_db->LoadCategory(catId, "", cat))
	return cat;

    cat.id = 0;
    cat.parent = 0;
    cat.name = _("Unknown");
    cat.font = "";
    cat.backcolor = view::OWN_GREEN;
    cat.forecolor = Qt::black;

    return cat;
}

QString User::GetCategoryName(int catId)
{
    Category cat;
    std::vector<Category>::iterator it = std::find(_categories.begin(), _categories.end(), catId);

    if (it !=_categories.end()) return it->name;

    if (_db->LoadCategory(catId, "", cat))
	return cat.name;

    return _("Unknown") ;
}

int User::GetCategoryId(const QString& catName) throw (CategoryNotFound)
{
    std::vector<Category>::iterator it;
    Category cat;

    for (it=_categories.begin(); it !=_categories.end(); it++)
        if (_(it->name.toStdString().c_str()) == catName)
            return it->id;

    if ( _db->LoadCategory(0, catName, cat))
	return cat.id;

    throw CategoryNotFound();
}

const QFont User::GetCategoryFont(int catId)
{
    DEFAULT_FONT(f);
    Category cat;

    for (unsigned int i=0; i<_categories.size(); i++)
        if (_categories[i].id == catId)
            return _categoriesFonts[i];

    if (_db->LoadCategory(catId, "", cat))
	return KissCount::ExtractFont(cat.font);

    return f;
}

void User::AddCategory(const Category& cat)
{
    _categories.push_back(cat);
    _categoriesFonts.push_back(KissCount::ExtractFont(""));
}

void User::UpdateCategory(const Category& cat)
{
    std::vector<Category>::iterator it = std::find(_categories.begin(), _categories.end(), cat.id);

    if (it !=_categories.end())
    {
	*it = cat;
	_categoriesFonts[it-_categories.begin()] = KissCount::ExtractFont(cat.font);
    }
}

void User::DeleteCategory(const Category& cat)
{
    std::vector<Category>::iterator it = std::find(_categories.begin(), _categories.end(), cat.id);

    if (it !=_categories.end())
    {
	int pos = it - _categories.begin();
	_categories.erase(_categories.begin()+pos);
	_categoriesFonts.erase(_categoriesFonts.begin()+pos);
    }
}

Account User::GetAccount(int accountId) throw (AccountNotFound)
{
    std::vector<Account>::iterator it = std::find(_accounts.begin(), _accounts.end(), accountId);
    
    if (it != _accounts.end())
	return *it;
    
    throw AccountNotFound();
}

QString User::GetAccountName(int accountId)
{
    std::vector<Account>::iterator it = std::find(_accounts.begin(), _accounts.end(), accountId);

    if (it != _accounts.end()) return it->name;

    return _("Unknown") ;
}

int User::GetAccountId(const QString& accountName) throw (AccountNotFound)
{
    std::vector<Account>::iterator it;
    for (it=_accounts.begin(); it !=_accounts.end(); it++)
        if (it->name == accountName)
            return it->id;

    throw AccountNotFound();
}

int User::GetAccountIdFromAccountNumber(const QString& accountNumber) throw (AccountNotFound)
{
    std::vector<Account>::iterator it;
    for (it=_accounts.begin(); it !=_accounts.end(); it++)
        if (it->number == accountNumber)
            return it->id;

    throw AccountNotFound();
}

void User::AddAccount(Account& ac)
{
    _accounts.push_back(ac);
}

void User::UpdateAccount(Account& ac)
{
    std::vector<Account>::iterator it = std::find(_accounts.begin(), _accounts.end(), ac.id);

    if (it != _accounts.end())
	*it = ac;
}

void User::DeleteAccount(Account& ac)
{
    std::vector<Account>::iterator it = std::find(_accounts.begin(), _accounts.end(), ac.id);

    if (it != _accounts.end())
	_accounts.erase(it);
}

int User::GetCategoriesNumber()
{
    return _categories.size();
}

int User::GetAccountsNumber()
{
    return _accounts.size();
}

int User::GetOperationsNumber(int month, int year)
{
    return (*_operations[year])[month].size();
}

QString User::GetLanguage()
{
    return _preferences["language"];
    // long val;

    // if (!res.Length())
    //     return wxLANGUAGE_ENGLISH ;
  
    // res.ToLong(&val);
  
    // return (wxLanguage)val;
}

void User::LinkOrUnlinkOperation(Operation& op)
{
    std::vector<Operation>::iterator it;
    Account account, account2;

    if (!_operations[op.year])
	_db->LoadYear(this, op.year);

    if (!_operations[op.year])
	return;

    // Not Linked
    if (!op.transfert)
    {
        for (it = (*_operations[op.year])[op.month].begin(); it != (*_operations[op.year])[op.month].end(); it++)
	{
            if (it->id != op.id && it->transfert == op.id)
	    {
                it->transfert = 0;
		it->_virtual = false;
                return;
	    }
	}
    }
    // Linked
    else
    {
        for (it = (*_operations[op.year])[op.month].begin(); it != (*_operations[op.year])[op.month].end(); it++)
	{
            if (it->id != op.id && it->id == op.transfert)
	    {
		account = GetAccount(it->account);
		account2 = GetAccount(op.account);
                it->transfert = op.id;
		it->_virtual = account._virtual || account2._virtual;
		op._virtual = account._virtual || account2._virtual;
                return;
	    }
	}
        op.transfert = 0;
	op._virtual = false;
    }
}

bool User::Group(std::vector<Operation>* ops, const Operation& op)
{
    std::vector<Operation>::iterator it;
    std::vector<int>::iterator it2;

    for (it = ops->begin(); it != ops->end(); it++)
    {
        if (it->id == op.parent)
	{
	    it2 = std::find(it->childs.begin(), it->childs.end(), op.id);
            if (it2 == it->childs.end())
		it->childs.push_back(op.id);
	    return true;
	}
    }

    return false ;
}

void User::Group(const Operation& op)
{
    std::vector<Operation>::iterator it;

    if (!Group(&(*_operations[op.year])[op.month], op)
	&& _db->LoadOperation(this, op.parent))
    {
	it = std::find ((*_operations[op.year])[op.month].begin(), (*_operations[op.year])[op.month].end(), op.parent);
	if (it != (*_operations[op.year])[op.month].end())
	    it->childs.push_back(op.id);
    }
}

void User::UnGroup(const Operation& op)
{
    std::vector<Operation>::iterator it;
    std::vector<int>::iterator it2;

    for (it = (*_operations[op.year])[op.month].begin(); it != (*_operations[op.year])[op.month].end(); it++)
    {
        if (it->id == op.parent)
	{
	    for (it2 = it->childs.begin(); it2 != it->childs.end(); it2++)
		if (*it2 == op.id)
		{
		    it->childs.erase(it2);
		    return;
		}
	}
    }
}

void User::ResolveGroups(int year)
{
    unsigned int i;
    std::map<unsigned int, std::vector<Operation> >::iterator it;

    for (it = _operations[year]->begin(); it != _operations[year]->end(); it++)
    {
	for (i=0; i<it->second.size(); i++)
	    if (it->second[i].parent)
		Group(((*_operations[year])[it->first])[i]);
    }
}