From 10a7765c7b6a1d62cb9ca2406145fd3799f5197c Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sun, 10 Sep 2017 18:21:25 +0200
Subject: Config should now automatically update when changed

---
 src/settings.cpp | 62 ++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 45 insertions(+), 17 deletions(-)

(limited to 'src/settings.cpp')

diff --git a/src/settings.cpp b/src/settings.cpp
index a0fad7f..638e3bd 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -25,31 +25,54 @@
 #include <QDir>
 #include <QFile>
 #include <QFileInfo>
+#include <QFileSystemWatcher>
 
 Settings::Settings(const QString &configFile, const QString &defaultsFile)
 {
-    values = parse(configFile);
-    defaults = parse(defaultsFile);
-
     m_configurationPath = configFile;
     m_defaultsPath = defaultsFile;
 
+    // homeLocation is the user's home folder
     homeLocation = QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
-    settingsLocation = QFileInfo(configFile).dir().absolutePath();
+
+    // 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("- values: [%s]", qUtf8Printable(configFile));
-    qDebug("- defaults: [%s]", qUtf8Printable(defaultsFile));
-    qDebug("- $home     | '%s'", qUtf8Printable(homeLocation));
-    qDebug("- $settings | '%s'", qUtf8Printable(settingsLocation));
-    qDebug("- $cache    | '%s'", qUtf8Printable(cacheLocation));
+    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
@@ -64,13 +87,15 @@ QString Settings::defaultsPath() const
 
 bool Settings::isEmpty() const
 {
-    return values.empty();
+    return userValues.empty();
 }
 
 bool Settings::contains(const QString &key)
 {
-    const toml::Value *x = values.find(key.toStdString());
-    if(x) {
+    const toml::Value *x = userValues.find(key.toStdString());
+    const toml::Value *y = defaultValues.find(key.toStdString());
+
+    if(x || y) {
         return true;
     } else {
         return false;
@@ -79,15 +104,15 @@ bool Settings::contains(const QString &key)
 
 QVariant Settings::value(const QString &key) const
 {
-    const toml::Value *cValue = values.find(key.toStdString());
-    const toml::Value *dValue = defaults.find(key.toStdString());
+    const toml::Value *cValue = userValues.find(key.toStdString());
+    const toml::Value *dValue = defaultValues.find(key.toStdString());
 
     QVariant r;
 
-    if(values.has(key.toStdString())) {
+    if(userValues.has(key.toStdString())) {
         r = valueToVariant(cValue);
     } else {
-        if(defaults.has(key.toStdString())) {
+        if(defaultValues.has(key.toStdString())) {
             r = valueToVariant(dValue);
         }
     }
@@ -110,7 +135,10 @@ toml::Value Settings::parse(const QString &filename)
 {
     toml::Value r;
 
-    if(!filename.isEmpty()) {
+    if(filename.isEmpty()) {
+        qWarning("Empty configuration path.");
+
+    } else {
         QFile file(filename);
         if(file.open(QIODevice::ReadOnly)) {
             std::stringstream d(file.readAll().toStdString());
-- 
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