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/*
* Copyright 2005-2013 Fabrice Colin
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <iostream>
#include <cstdlib>
#include "Url.h"
#include "ViewHistory.h"
using std::clog;
using std::endl;
using std::string;
ViewHistory::ViewHistory(const string &database) :
SQLiteBase(database)
{
}
ViewHistory::~ViewHistory()
{
}
/// Creates the ViewHistory table in the database.
bool ViewHistory::create(const string &database)
{
bool createTable = false;
// The specified path must be a file
if (SQLiteBase::check(database) == false)
{
return false;
}
SQLiteBase db(database);
// Does ViewHistory exist ?
if (db.executeSimpleStatement("SELECT * FROM ViewHistory LIMIT 1;") == false)
{
#ifdef DEBUG
clog << "ViewHistory::create: ViewHistory doesn't exist" << endl;
#endif
createTable = true;
}
else
{
// Previous versions didn't include a Date field, so check for it
if (db.executeSimpleStatement("SELECT Date FROM ViewHistory LIMIT 1;") == false)
{
#ifdef DEBUG
clog << "ViewHistory::create: ViewHistory needs updating" << endl;
#endif
// Ideally, we would use ALTER TABLE but it's not supported by SQLite
if (db.executeSimpleStatement("DROP TABLE ViewHistory; VACUUM;") == true)
{
createTable = true;
}
}
}
// Create the table ?
if (createTable == true)
{
if (db.executeSimpleStatement("CREATE TABLE ViewHistory (Url VARCHAR(255) \
PRIMARY KEY, Status INTEGER, DATE INTEGER);") == false)
{
return false;
}
}
return true;
}
/// Inserts an URL.
bool ViewHistory::insertItem(const string &url)
{
bool success = false;
SQLResults *results = executeStatement("INSERT INTO ViewHistory \
VALUES('%q', '1', '%d');", Url::escapeUrl(url).c_str(), time(NULL));
if (results != NULL)
{
success = true;
delete results;
}
return success;
}
/// Checks if an URL is in the history.
bool ViewHistory::hasItem(const string &url)
{
bool success = false;
SQLResults *results = executeStatement("SELECT Url FROM ViewHistory \
WHERE Url='%q';", Url::escapeUrl(url).c_str());
if (results != NULL)
{
SQLRow *row = results->nextRow();
if (row != NULL)
{
// If this returns anything, it's the URL we are looking for
#ifdef DEBUG
clog << "ViewHistory::hasItem: URL " << row->getColumn(0) << endl;
#endif
success = true;
delete row;
}
delete results;
}
return success;
}
/// Returns the number of items.
unsigned int ViewHistory::getItemsCount(void)
{
unsigned int count = 0;
SQLResults *results = executeStatement("SELECT COUNT(*) FROM ViewHistory;");
if (results != NULL)
{
count = (unsigned int)results->getIntCount();
delete results;
}
return count;
}
/// Deletes an URL.
bool ViewHistory::deleteItem(const string &url)
{
bool success = false;
SQLResults *results = executeStatement("DELETE FROM ViewHistory \
WHERE Url='%q';", Url::escapeUrl(url).c_str());
if (results != NULL)
{
success = true;
delete results;
}
return success;
}
/// Expires items older than the given date.
bool ViewHistory::expireItems(time_t expiryDate)
{
bool success = false;
SQLResults *results = executeStatement("DELETE FROM ViewHistory \
WHERE Date<'%d';", expiryDate);
if (results != NULL)
{
success = true;
delete results;
}
return success;
}
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