From 9e82210463aed66743ae7ae9cccc260e69596b25 Mon Sep 17 00:00:00 2001
From: arcan1s <darkarcanis@mail.ru>
Date: Sat, 11 Oct 2014 03:38:19 +0400
Subject: [PATCH] implement autoupdate function to aw (see #32)

---
 sources/awesome-widget/awesome-widget.cpp | 55 +++++++++++++++++++++--
 sources/awesome-widget/awesome-widget.h   |  8 +++-
 sources/version.h.in                      |  1 +
 3 files changed, 59 insertions(+), 5 deletions(-)

diff --git a/sources/awesome-widget/awesome-widget.cpp b/sources/awesome-widget/awesome-widget.cpp
index 9408a2e..bd4f59d 100644
--- a/sources/awesome-widget/awesome-widget.cpp
+++ b/sources/awesome-widget/awesome-widget.cpp
@@ -25,7 +25,11 @@
 #include <QGraphicsProxyWidget>
 #include <QGraphicsScene>
 #include <QGraphicsView>
+#include <QMessageBox>
+#include <QNetworkAccessManager>
 #include <QNetworkInterface>
+#include <QNetworkRequest>
+#include <QNetworkReply>
 #include <QProcessEnvironment>
 #include <QTextCodec>
 #include <QTimer>
@@ -63,13 +67,13 @@ AwesomeWidget::~AwesomeWidget()
 }
 
 
-bool AwesomeWidget::checkUpdates()
+void AwesomeWidget::checkUpdates()
 {
     if (debug) qDebug() << PDEBUG;
 
-    bool needUpdate = false;
-
-    return needUpdate;
+    QNetworkAccessManager *manager = new QNetworkAccessManager(this);
+    connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(replyRecieved(QNetworkReply *)));
+    manager->get(QNetworkRequest(QUrl(VERSION_API)));
 }
 
 
@@ -97,6 +101,9 @@ void AwesomeWidget::createActions()
     connect(contextMenu[2], SIGNAL(triggered(bool)), this, SLOT(updateNetworkDevice()));
     connect(contextMenu[2], SIGNAL(triggered(bool)), extsysmonEngine, SLOT(updateAllSources()));
     connect(contextMenu[2], SIGNAL(triggered(bool)), sysmonEngine, SLOT(updateAllSources()));
+    contextMenu.append(new QAction(QIcon::fromTheme(QString("system-software-update")),
+                                   i18n("Check for updates"), this));
+    connect(contextMenu[3], SIGNAL(triggered(bool)), this, SLOT(checkUpdates()));
 }
 
 
@@ -225,6 +232,29 @@ void AwesomeWidget::init()
     connect(timer, SIGNAL(timeout()), this, SLOT(updateText()));
     connect(timer, SIGNAL(timeout()), this, SLOT(updateTooltip()));
     timer->start();
+    // check for updates
+    connect(this, SIGNAL(thereIsUpdates(QString)), this, SLOT(showUpdates(QString)));
+    checkUpdates();
+}
+
+
+void AwesomeWidget::replyRecieved(QNetworkReply *reply)
+{
+    if (debug) qDebug() << PDEBUG;
+
+    QString answer = reply->readAll();
+    if (!answer.contains(QString("tag_name"))) return;
+    QString version = QString(VERSION);
+    if (debug) qDebug() << PDEBUG << answer;
+    for (int i=0; i<answer.split(QString("tag_name")).count(); i++) {
+        version = answer.split(QString("tag_name"))[1].split(QChar(','))[0];
+        version.remove(QChar('"'));
+        version.remove(QChar(':'));
+        version.remove(QString("V."));
+        break;
+    }
+    if (version != QString(VERSION))
+        emit(thereIsUpdates(version));
 }
 
 
@@ -381,4 +411,21 @@ void AwesomeWidget::showReadme()
 }
 
 
+void AwesomeWidget::showUpdates(QString version)
+{
+    if (debug) qDebug() << PDEBUG;
+
+    QString text;
+    text += i18n("Current version : %1", QString(VERSION)) + QString("\n");
+    text += i18n("New version : %2", version) + QString("\n");
+    text += i18n("Click \"Ok\" to download");
+    int select = QMessageBox::information(0, i18n("There are updates"), text, QMessageBox::Ok | QMessageBox::Cancel);
+    switch(select) {
+    case QMessageBox::Ok:
+        QDesktopServices::openUrl(QString(RELEASES) + version);
+        break;
+    }
+}
+
+
 K_EXPORT_PLASMA_APPLET(awesome-widget, AwesomeWidget)
diff --git a/sources/awesome-widget/awesome-widget.h b/sources/awesome-widget/awesome-widget.h
index f82d610..ad4ab8e 100644
--- a/sources/awesome-widget/awesome-widget.h
+++ b/sources/awesome-widget/awesome-widget.h
@@ -33,6 +33,7 @@
 class CustomLabel;
 class QGraphicsGridLayout;
 class QGraphicsScene;
+class QNetworkReply;
 
 class AwesomeWidget : public Plasma::Applet
 {
@@ -55,6 +56,7 @@ public slots:
     // contextual actions
     void showKsysguard();
     void showReadme();
+    void showUpdates(QString version);
     // dataengine
     void addDiskDevice(const QString source);
     void connectToEngine();
@@ -70,8 +72,9 @@ public slots:
     void updateTooltip();
 
 private slots:
-    bool checkUpdates();
+    void checkUpdates();
     void reinit();
+    void replyRecieved(QNetworkReply *reply);
     // configuration interface
     void addNewCustomCommand(QTableWidgetItem *item);
     void addNewPkgCommand(QTableWidgetItem *item);
@@ -85,6 +88,9 @@ private slots:
     void setFontFormating();
     void setFormating();
 
+signals:
+    void thereIsUpdates(QString version);
+
 protected:
     QList<QAction *> contextualActions();
     void createConfigurationInterface(KConfigDialog *parent);
diff --git a/sources/version.h.in b/sources/version.h.in
index 5886127..05705bb 100644
--- a/sources/version.h.in
+++ b/sources/version.h.in
@@ -13,6 +13,7 @@
 // links
 #define HOMEPAGE "http://arcanis.name/projects/awesome-widgets/"
 #define REPOSITORY "https://github.com/arcan1s/awesome-widgets"
+#define RELEASES "https://github.com/arcan1s/awesome-widgets/releases/tag/V."
 #define VERSION_API "https://api.github.com/repos/arcan1s/awesome-widgets/releases"
 #define BUGTRACKER "https://github.com/arcan1s/awesome-widgets/issues"
 #define TRANSLATION "https://github.com/arcan1s/awesome-widgets/issues/14"