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/*
* This file is part of smolbote. It's copyrighted by the contributors recorded
* in the version control history of the file, available from its original
* location: git://neueland.iserlohn-fortress.net/smolbote.git
*
* SPDX-License-Identifier: GPL-3.0
*/
#include "settings.h"
#include <QStandardPaths>
#include <fstream>
#include <cstdio>
#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QFileSystemWatcher>
Settings::Settings(const QString &configFile, const QString &defaultsFile)
{
m_configurationPath = configFile;
m_defaultsPath = defaultsFile;
// homeLocation is the user's home folder
homeLocation = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
// settingsLocation is the location of the configFile
if(QFile::exists(configFile)) {
settingsLocation = QFileInfo(configFile).dir().absolutePath();
} else {
// if file doesn't exist, use the generic location
settingsLocation = QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation);
}
// cacheLocation
cacheLocation = QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
userValues = parse(m_configurationPath);
defaultValues = parse(m_defaultsPath);
m_watcher = new QFileSystemWatcher();
m_watcher->addPath(configFile);
QObject::connect(m_watcher, &QFileSystemWatcher::fileChanged, [this](const QString &path) {
if(path == m_configurationPath) {
#ifdef QT_DEBUG
qDebug("Reloading user configuration");
#endif
userValues = parse(m_configurationPath);
}
});
#ifdef QT_DEBUG
qDebug(">> Configuration");
qDebug("- userconf: [%s]", qUtf8Printable(m_configurationPath));
qDebug("- defaults: [%s]", qUtf8Printable(m_defaultsPath));
qDebug("- $home [%s]", qUtf8Printable(homeLocation));
qDebug("- $settings [%s]", qUtf8Printable(settingsLocation));
qDebug("- $cache [%s]", qUtf8Printable(cacheLocation));
#endif
}
Settings::~Settings()
{
m_watcher->deleteLater();
}
QString Settings::configurationPath() const
{
return m_configurationPath;
}
QString Settings::defaultsPath() const
{
return m_defaultsPath;
}
bool Settings::isEmpty() const
{
return userValues.empty();
}
QVariant Settings::value(const QString &key) const
{
const toml::Value *cValue = userValues.find(key.toStdString());
const toml::Value *dValue = defaultValues.find(key.toStdString());
QVariant r;
if(userValues.has(key.toStdString())) {
r = valueToVariant(cValue);
} else {
if(defaultValues.has(key.toStdString())) {
r = valueToVariant(dValue);
}
}
// check if key is a path, in which case replace '~' with the home location
if(key.endsWith(QLatin1String("path"), Qt::CaseInsensitive)) {
QString value = r.toString();
while(value.contains('$')) {
value.replace("$settings", settingsLocation);
value.replace("$cache", cacheLocation);
value.replace("$home", homeLocation);
}
r = QVariant(value);
}
return r;
}
toml::Value Settings::parse(const QString &filename)
{
toml::Value r;
if(filename.isEmpty()) {
qWarning("Empty configuration path.");
} else {
QFile file(filename);
if(file.open(QIODevice::ReadOnly)) {
std::stringstream d(file.readAll().toStdString());
file.close();
toml::ParseResult result = toml::parse(d);
if(!result.valid()) {
qWarning("Invalid configuration: %s", result.errorReason.c_str());
}
r = result.value;
} else {
qWarning("Cannot open configuration: %s", qUtf8Printable(filename));
}
}
return r;
}
QVariant Settings::fromList(const toml::Value *list) const
{
QStringList l;
for(const toml::Value &v : list->as<toml::Array>()) {
// TODO check value type
l.append(QString::fromStdString(v.as<std::string>()));
}
return QVariant(l);
}
QVariant Settings::valueToVariant(const toml::Value *value) const
{
QVariant r;
switch (value->type()) {
case toml::Value::NULL_TYPE:
break;
case toml::Value::BOOL_TYPE:
r = QVariant(value->as<bool>());
break;
case toml::Value::INT_TYPE:
r = QVariant(value->as<int>());
break;
case toml::Value::DOUBLE_TYPE:
r = QVariant(value->as<double>());
break;
case toml::Value::STRING_TYPE:
r = QVariant(QString::fromStdString(value->as<std::string>()));
break;
case toml::Value::ARRAY_TYPE:
r = fromList(value);
break;
default:
qWarning("Unhandled type in configuration");
break;
}
return r;
}
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