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/*
Copyright (c) 2006-2009, Tom Thielicke IT Solutions
SPDX-License-Identifier: GPL-2.0-only
*/
/****************************************************************
**
** File name: connection.h
**
****************************************************************/
#ifndef CONNECTION_H
#define CONNECTION_H
#include <QCoreApplication>
#include <QDir>
#include <QFile>
#include <QList>
#include <QMessageBox>
#include <QSettings>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QStandardPaths>
#include <QString>
#include <QStringList>
#include <QTextStream>
#include "def/defines.h"
#include "sql/startsql.h"
#include "widget/errormessage.h"
// Database connection to SQLite
static bool createConnection()
{
// Path do the database
QString dbPath;
// Filename of the template database
QString dbNameTemplate = t10::app_db;
// Filename of the user database
QString dbNameUser = t10::app_user_db;
// Connection to SQLite
QSqlDatabase db;
QList<QString> lessonId;
QList<QString> lessonLesson;
QList<QString> lessonTime;
QList<QString> lessonToken;
QList<QString> lessonStrokes;
QList<QString> lessonErrors;
QList<QString> lessonStamp;
QList<QString> charUnicode;
QList<QString> charTarget;
QList<QString> charMistake;
QList<QString> charOccur;
#if APP_PORTABLE
auto dbDir = QCoreApplication::applicationDirPath() + "/portable/";
dbPath = dbDir + dbNameUser;
#else
QSettings settings;
settings.beginGroup("database");
QString oldDbPath = settings.value("pathpro", "").toString();
settings.endGroup();
auto dbDir
= QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
dbPath = dbDir + "/" + dbNameUser;
if (QFile::exists(oldDbPath)) {
QDir().mkpath(dbDir);
QFile(oldDbPath).rename(dbPath);
settings.beginGroup("database");
settings.remove("pathpro");
settings.endGroup();
}
#endif
// User path specified
if (!QFile::exists(dbPath)) {
// Try to create new databae in user path
// Exist a database in the program dir?
QString dbTemplatePath = t10::getDataDir() + dbNameTemplate;
if (QFile::exists(dbTemplatePath)) {
// A database exist in the program dir
// -> copy database to appdata location
QFile file(dbTemplatePath);
QDir().mkpath(dbDir);
if (file.copy(dbPath)) {
QFile::setPermissions(
dbPath, QFile::permissions(dbPath) | QFile::WriteUser);
} else {
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::sql_db_user_copy,
ErrorMessage::Type::Warning, ErrorMessage::Cancel::No,
QObject::tr("Affected directory:\n") + dbPath);
return false;
}
} else {
// No database found in program dir
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::sql_db_app_exist,
ErrorMessage::Type::Critical, ErrorMessage::Cancel::Program,
QObject::tr("Affected directory:\n") + dbPath);
return false;
}
}
if (QSqlDatabase::contains()) {
db = QSqlDatabase::database();
db.close();
} else {
db = QSqlDatabase::addDatabase("QSQLITE");
}
// Set database
db.setDatabaseName(dbPath);
// Open the database
if (!db.open()) {
// Error message
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::sql_connection,
ErrorMessage::Type::Critical, ErrorMessage::Cancel::Program,
QObject::tr("Affected directory:\n") + dbPath);
return false;
}
QSqlQuery queryUpdate;
if (!queryUpdate.exec("SELECT * FROM db_version ORDER BY version DESC;")) {
// Error message
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::db_version_readable,
ErrorMessage::Type::Critical, ErrorMessage::Cancel::Update);
} else {
if (!queryUpdate.first()) {
// Error message
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::db_version_readable,
ErrorMessage::Type::Critical, ErrorMessage::Cancel::Update);
} else {
// Server DB version is 0
// -> software is too old to update
if (queryUpdate.value(0).toInt() < t10::compiled_update_version) {
// Update the database
QStringList updateFileName = t10::update_url_sql.split("/");
QFile sqlFile(
":/update/" + updateFileName[updateFileName.count() - 1]);
if (!sqlFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
// Error message
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::temp_file_creation,
ErrorMessage::Type::Critical,
ErrorMessage::Cancel::Update);
}
// Go to the beginning of the version file
sqlFile.seek(0);
QTextStream in(&sqlFile);
QString line;
// Execute all sql command of the downloaded file
while (!in.atEnd()) {
line = in.readLine();
line = line.trimmed();
// Exclude comments and empty lines
if (line != ""
&& !line.startsWith("//", Qt::CaseSensitive)) {
// Without error handling, because DROP-Statements are
// allowed to be invalid (there exist also a IF EXISTS
// statement in the SQLite library which suppresses an
// error, but it didn't work when I try it)
if (!queryUpdate.exec(line)
&& !line.startsWith("drop", Qt::CaseInsensitive)) {
// Error message + failed sql string
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(
Error::update_sql_execution,
ErrorMessage::Type::Critical,
ErrorMessage::Cancel::Update, line);
break;
}
}
}
StartSql* lessonSql = new StartSql();
if (!lessonSql->analyzeLessons("lesson")) {
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::analyze_table_fill,
ErrorMessage::Type::Critical,
ErrorMessage::Cancel::Update, line);
}
if (!lessonSql->analyzeLessons("open")) {
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::analyze_table_fill,
ErrorMessage::Type::Critical,
ErrorMessage::Cancel::Update, line);
}
if (!lessonSql->analyzeLessons("own")) {
ErrorMessage* errorMessage = new ErrorMessage();
errorMessage->showMessage(Error::analyze_table_fill,
ErrorMessage::Type::Critical,
ErrorMessage::Cancel::Update, line);
}
}
}
}
return true;
}
#endif // CONNECTION_H
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