looqs/shared/common.cpp

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#include <QProcessEnvironment>
#include <QSettings>
#include <QStandardPaths>
#include <QDir>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QSqlError>
#include <QTextStream>
#include <QDebug>
#include "qssgeneralexception.h"
#include "common.h"
#define SETTINGS_KEY_DBPATH "dbpath"
#define SETTINGS_KEY_FIRSTRUN "firstrun"
inline void initResources()
{
Q_INIT_RESOURCE(create);
}
bool Common::initSqliteDatabase(QString path)
{
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(path);
if(!db.open())
{
qDebug() << "failed to open database: " << path;
return false;
}
initResources();
QFile file(":./create.sql");
if(!file.open(QIODevice::ReadOnly))
{
qDebug() << "Failed to load SQL creation script from embedded resource";
return false;
}
QTextStream stream(&file);
db.transaction();
while(!stream.atEnd())
{
QString sql = stream.readLine();
qDebug() << sql;
QSqlQuery sqlQuery;
if(!sqlQuery.exec(sql))
{
qDebug() << "Failed to execute sql statement while initializing database: " << sqlQuery.lastError();
db.rollback();
return false;
}
}
db.commit();
db.close();
file.close();
return true;
}
void Common::ensureConfigured()
{
QSettings settings;
QVariant firstRun = settings.value(SETTINGS_KEY_FIRSTRUN);
if(!firstRun.isValid())
{
QString dbpath = QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation);
QDir dir;
if(!dir.exists(dbpath))
{
if(!dir.mkpath(dbpath))
{
throw QSSGeneralException("Failed to create dbpath directory");
}
}
dbpath += "/qss.sqlite";
if(!initSqliteDatabase(dbpath))
{
throw QSSGeneralException("Failed to initialize sqlite database");
}
settings.setValue(SETTINGS_KEY_FIRSTRUN, false);
settings.setValue(SETTINGS_KEY_DBPATH, dbpath);
}
else
{
QString dbpath = databasePath();
if(!QFile::exists(dbpath))
{
throw QSSGeneralException("Database " + dbpath + " was not found");
}
}
}
void Common::setupAppInfo()
{
QCoreApplication::setOrganizationName("quitesimple.org");
QCoreApplication::setOrganizationDomain("quitesimple.org");
QCoreApplication::setApplicationName("qss");
}
QString Common::databasePath()
{
QString env = QProcessEnvironment::systemEnvironment().value("QSS_DB_OVERRIDE");
if(env == "")
{
QSettings settings;
return settings.value(SETTINGS_KEY_DBPATH).toString();
}
return env;
}