add a IpfsGet API access to actually write files on disk

Will not work, ipfs/kubo#1210

src/Arbore-qt.pro

@@ -22,7 +22,8 @@ SOURCES += main.cpp\
     downloadmodel.cpp \
     downloaddelegate.cpp \
     ipfs/ipfsid.cpp \
-    ipfs/ipfspeer.cpp
+    ipfs/ipfspeer.cpp \
+    ipfs/ipfsget.cpp
 
 HEADERS  += mainwindow.h \
     ipfs/ipfs.h \
@@ -35,6 +36,7 @@ HEADERS  += mainwindow.h \
     downloadmodel.h \
     downloaddelegate.h \
     ipfs/ipfsid.h \
-    ipfs/abstractipfscommand.h
+    ipfs/abstractipfscommand.h \
+    ipfs/ipfsget.h
 
 FORMS    += mainwindow.ui

src/ipfs/abstractipfscommand.h

@@ -17,7 +17,6 @@ class AbstractIpfsCommand : public QObject
     explicit AbstractIpfsCommand(QObject *parent = 0) : QObject(parent) {}
     virtual void init() = 0;
     virtual void on_reply(const QJsonObject *json) = 0;
-    virtual bool valid_data() const { return true; }
 
 protected:
     virtual ~AbstractIpfsCommand() {}

src/ipfs/ipfs.cpp

@@ -64,6 +64,7 @@ void Ipfs::init()
 
 void Ipfs::init_commands()
 {
+    get.init();
     id.init();
     pin.init();
     swarm.init();

src/ipfs/ipfs.h

@@ -4,6 +4,7 @@
 #include <QObject>
 #include <QProcess>
 #include <QTimer>
+#include "ipfs/ipfsget.h"
 #include "ipfs/ipfsid.h"
 #include "ipfs/ipfspin.h"
 #include "ipfs/ipfsswarm.h"
@@ -20,6 +21,7 @@ class Ipfs : public QObject
     static Ipfs& instance();
 
     // IPFS API access
+    IpfsGet get;
     IpfsId id;
     IpfsPin pin;
     IpfsSwarm swarm;

src/ipfs/ipfsget.cpp

@@ -0,0 +1,33 @@
+#include "ipfsget.h"
+#include "ipfs/ipfs.h"
+
+#include <QUrl>
+#include <QUrlQuery>
+
+const QString API_COMMAND = "get";
+
+IpfsGet::IpfsGet(QObject *parent)
+    : AbstractIpfsCommand(parent)
+{
+
+}
+
+void IpfsGet::write_on_disk(const IpfsHash &hash, const QString &path)
+{
+    QUrl url = Ipfs::instance().api_url(API_COMMAND);
+    QUrlQuery query;
+
+    query.addQueryItem("arg", hash.ToString());
+    query.addQueryItem("o", path);
+
+    url.setQuery(query);
+    Ipfs::instance().query(url, this);
+}
+
+void IpfsGet::init() {}
+
+void IpfsGet::on_reply(const QJsonObject *json)
+{
+    Q_UNUSED(json);
+}
+

src/ipfs/ipfsget.h

@@ -0,0 +1,24 @@
+#ifndef IPFSGET_H
+#define IPFSGET_H
+
+#include "ipfs/abstractipfscommand.h"
+#include "ipfs/ipfshash.h"
+#include <QObject>
+
+class IpfsGet : public AbstractIpfsCommand
+{
+    Q_OBJECT
+public:
+    explicit IpfsGet(QObject *parent = 0);
+    virtual ~IpfsGet() {}
+
+    /* Will not work, https://github.com/ipfs/go-ipfs/issues/1210 */
+    void write_on_disk(const IpfsHash &hash, const QString &path);
+
+    // AbstractIpfsCommand interface
+public:
+    void init();
+    void on_reply(const QJsonObject *json);
+};
+
+#endif // IPFSGET_H

src/ipfs/ipfspin.cpp

@@ -13,7 +13,7 @@ IpfsPin::IpfsPin(QObject *parent)
 
 void IpfsPin::init() { }
 
-void IpfsPin::add_pin(IpfsHash &hash, bool recursive)
+void IpfsPin::add_pin(const IpfsHash &hash, bool recursive)
 {
     QUrl url = Ipfs::instance().api_url(API_COMMAND + "/add");
     QUrlQuery query;

src/ipfs/ipfspin.h

@@ -14,7 +14,7 @@ class IpfsPin : public AbstractIpfsCommand
     explicit IpfsPin(QObject *parent = 0);
     virtual ~IpfsPin() {}
 
-    void add_pin(IpfsHash &hash, bool recursive = false);
+    void add_pin(const IpfsHash &hash, bool recursive = false);
     void ls_pin(IpfsPinType pin_type = DIRECT);
 
     // AbstractIpfsCommand interface