Cache images and correctly save relative image paths

src/entryListModel.cpp

@@ -72,3 +72,8 @@ void EntryListModel::fetch()
 {
     Fetcher::instance().fetch(QUrl(m_feed));
 }
+
+QString EntryListModel::image(QString url)
+{
+    return Fetcher::instance().image(url);
+}

src/entryListModel.h

@@ -42,6 +42,7 @@ public:
     QHash<int, QByteArray> roleNames() const override;
 
     Q_INVOKABLE void fetch();
+    Q_INVOKABLE QString image(QString url);
 
     QString feed() const;
     void setFeed(QString feed);

src/feedListModel.cpp

@@ -20,7 +20,6 @@
 
 #include <QDebug>
 #include <QModelIndex>
-#include <QSqlError>
 #include <QSqlRecord>
 #include <QUrl>
 
@@ -35,6 +34,10 @@ FeedListModel::FeedListModel(QObject *parent)
     setSort(0, Qt::AscendingOrder);
     setEditStrategy(OnFieldChange);
     select();
+
+    connect(&Fetcher::instance(), &Fetcher::updated, this, [this]() {
+        select();
+    });
 }
 
 QHash<int, QByteArray> FeedListModel::roleNames() const
@@ -62,11 +65,6 @@ void FeedListModel::addFeed(QString url)
 
     insertRecord(-1, rec);
 
-    connect(&Fetcher::instance(), &Fetcher::updated, this, [this]() {
-        select();
-
-        disconnect(&Fetcher::instance(), &Fetcher::updated, nullptr, nullptr);
-    });
     Fetcher::instance().fetch(QUrl(url));
 }
 
@@ -102,3 +100,8 @@ void FeedListModel::removeFeed(int index)
     Database::instance().execute(query);
     select();
 }
+
+QString FeedListModel::image(QString url)
+{
+    return Fetcher::instance().image(url);
+}

src/feedListModel.h

@@ -43,6 +43,7 @@ public:
 
     Q_INVOKABLE void addFeed(QString url);
     Q_INVOKABLE void removeFeed(int index);
+    Q_INVOKABLE QString image(QString url);
 
 private:
     bool feedExists(QString url);

src/fetcher.cpp

@@ -20,6 +20,9 @@
 
 #include <QNetworkAccessManager>
 #include <QNetworkReply>
+#include <QFile>
+#include <QStandardPaths>
+#include <QFileInfo>
 
 #include <Syndication/Syndication>
 
@@ -28,17 +31,17 @@
 
 Fetcher::Fetcher()
 {
+    manager = new QNetworkAccessManager(this);
+    manager->setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
+    manager->setStrictTransportSecurityEnabled(true);
+    manager->enableStrictTransportSecurityStore(true);
 }
 
 void Fetcher::fetch(QUrl url)
 {
     qDebug() << "Starting to fetch" << url.toString();
-    QNetworkAccessManager *manager = new QNetworkAccessManager(this);
-    manager->setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
-    manager->setStrictTransportSecurityEnabled(true);
-    manager->enableStrictTransportSecurityStore(true);
 
-    QNetworkRequest request = QNetworkRequest(QUrl(url));
+    QNetworkRequest request(url);
     QNetworkReply *reply = manager->get(request);
     connect(reply, &QNetworkReply::finished, this, [this, url, reply]() {
         QByteArray data = reply->readAll();
@@ -53,7 +56,11 @@ void Fetcher::fetch(QUrl url)
         query.prepare(QStringLiteral("UPDATE Feeds SET name=:name, image=:image WHERE url=:url;"));
         query.bindValue(QStringLiteral(":name"), feed->title());
         query.bindValue(QStringLiteral(":url"), url.toString());
-        query.bindValue(QStringLiteral(":image"), feed->image()->url());
+        if(feed->image()->url().startsWith(QStringLiteral("/"))) {
+            QString absolute = url.adjusted(QUrl::RemovePath).toString() + feed->image()->url();
+            query.bindValue(QStringLiteral(":image"), absolute);
+        } else
+            query.bindValue(QStringLiteral(":image"), feed->image()->url());
         Database::instance().execute(query);
         qDebug() << "Updated feed title:" << feed->title();
 
@@ -91,3 +98,27 @@ void Fetcher::fetch(QUrl url)
         delete reply;
     });
 }
+
+QString Fetcher::image(QString url)
+{
+    QString path = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation) + QStringLiteral("/") + QString::fromStdString(QCryptographicHash::hash(url.toUtf8(), QCryptographicHash::Md5).toHex().toStdString());
+
+    if(QFileInfo(path).exists()) {
+        return path;
+    }
+
+    QNetworkRequest request((QUrl(url)));
+    QNetworkReply *reply = manager->get(request);
+    connect(reply, &QNetworkReply::finished, this, [this, url, reply, path]() {
+        QByteArray data = reply->readAll();
+        QFile file(path);
+        file.open(QIODevice::WriteOnly);
+        file.write(data);
+        file.close();
+
+        emit updated();
+        delete reply;
+    });
+
+    return QStringLiteral("");
+}

src/fetcher.h

@@ -22,6 +22,7 @@
 
 #include <QObject>
 #include <QUrl>
+#include <QNetworkAccessManager>
 
 class Fetcher : public QObject
 {
@@ -33,11 +34,14 @@ public:
         return _instance;
     }
     void fetch(QUrl);
+    QString image(QString);
 
 private:
     Fetcher();
     Fetcher(const Fetcher &);
 
+    QNetworkAccessManager *manager;
+
 Q_SIGNALS:
     void updated();
 };

src/main.cpp

@@ -35,8 +35,8 @@
 #include "alligatorsettings.h"
 #include "database.h"
 #include "entryListModel.h"
-#include "feed.h"
 #include "feedListModel.h"
+#include "fetcher.h"
 
 #ifdef Q_OS_ANDROID
 Q_DECL_EXPORT

src/qml/EntryListPage.qml

@@ -29,9 +29,11 @@ import org.kde.alligator 1.0
 Kirigami.ScrollablePage {
     id: page
 
-    property var data
+    property var name
+    property var url
+    property var image
 
-    property var all: page.data.url === "all"
+    property var all: page.feedData.url === "all"
 
     contextualActions: [
         Kirigami.Action {
@@ -59,21 +61,21 @@ Kirigami.ScrollablePage {
         visible: count !== 0
         model: EntryListModel {
             id: entryListModel
-            feed: page.data.url
+            feed: page.url
         }
 
         header: RowLayout {
             width: parent.width
-            height: page.height * 0.2
+            height: root.height * 0.2
             visible: !all
-            Image {
-                source: page.data.image
-                fillMode: Image.PreserveAspectFit
-                sourceSize.width: 0
-                sourceSize.height: parent.height
+            Kirigami.Icon {
+                source: entryListModel.image(page.image)
+                width: height
+                height: parent.height
+                Component.onCompleted: console.log("Height: " + page.height)
             }
             Kirigami.Heading {
-                text: page.data.name
+                text: page.name
             }
         }
 

src/qml/FeedListPage.qml

@@ -101,7 +101,7 @@ Kirigami.ScrollablePage {
                 Item {
                     Kirigami.Icon {
                         id: icon
-                        source: model.image
+                        source: feedListModel.image(model.image)
                         width: height
                         height: parent.height
                     }
@@ -128,7 +128,7 @@ Kirigami.ScrollablePage {
 
                 onClicked: {
                     lastFeed = model.url
-                    pageStack.push("qrc:/EntryListPage.qml", {"data": model})
+                    pageStack.push("qrc:/EntryListPage.qml", {"name": name, "url": url, "image": image})
                 }
             }
         }