CodePaster: Add support for pastecode.xyz

Our users are running out of choices for code pasting: KDE has required
an account for quite a while now, and pastebin.ca appears to be offline,
leaving them only with the ad-heavy pastebin.com.
Therefore, we add support for a new site: pastecode.xyz seems
responsive enough, has a simple API and has been around for a bit.

[ChangeLog] Added support for the pastecode.xyz code pasting service

Change-Id: I9b622853df24c28d65c6e388f953c82fc5380fae
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

8 files changed, 219 insertions, 2 deletions

diff --git a/src/plugins/cpaster/cpaster.pro b/src/plugins/cpaster/cpaster.pro
index 20c85c596b3..6a060565307 100644
--- a/src/plugins/cpaster/cpaster.pro
+++ b/src/plugins/cpaster/cpaster.pro
@@ -7,6 +7,7 @@ HEADERS += cpasterplugin.h \
     cpasterconstants.h \
     pastebindotcomprotocol.h \
     pastebindotcaprotocol.h \
+    pastecodedotxyzprotocol.h \
     settings.h \
     pasteselectdialog.h \
     columnindicatortextedit.h \
@@ -23,6 +24,7 @@ SOURCES += cpasterplugin.cpp \
     pasteview.cpp \
     pastebindotcomprotocol.cpp \
     pastebindotcaprotocol.cpp \
+    pastecodedotxyzprotocol.cpp \
     settings.cpp \
     pasteselectdialog.cpp \
     columnindicatortextedit.cpp \
diff --git a/src/plugins/cpaster/cpaster.qbs b/src/plugins/cpaster/cpaster.qbs
index 694e495f43a..35bb876034f 100644
--- a/src/plugins/cpaster/cpaster.qbs
+++ b/src/plugins/cpaster/cpaster.qbs
@@ -31,6 +31,8 @@ QtcPlugin {
         "pastebindotcomprotocol.cpp",
         "pastebindotcomprotocol.h",
         "pastebindotcomsettings.ui",
+        "pastecodedotxyzprotocol.cpp",
+        "pastecodedotxyzprotocol.h",
         "pasteselect.ui",
         "pasteselectdialog.cpp",
         "pasteselectdialog.h",
diff --git a/src/plugins/cpaster/cpasterplugin.cpp b/src/plugins/cpaster/cpasterplugin.cpp
index ef3d4cae5a7..4a512c2edf0 100644
--- a/src/plugins/cpaster/cpasterplugin.cpp
+++ b/src/plugins/cpaster/cpasterplugin.cpp
@@ -29,6 +29,7 @@
 #include "kdepasteprotocol.h"
 #include "pastebindotcomprotocol.h"
 #include "pastebindotcaprotocol.h"
+#include "pastecodedotxyzprotocol.h"
 #include "fileshareprotocol.h"
 #include "pasteselectdialog.h"
 #include "settingspage.h"
@@ -122,7 +123,8 @@ bool CodepasterPlugin::initialize(const QStringList &arguments, QString *errorMe
     Protocol *protos[] =  {new PasteBinDotComProtocol,
                            new PasteBinDotCaProtocol,
                            new KdePasteProtocol,
-                           new FileShareProtocol
+                           new FileShareProtocol,
+                           new PasteCodeDotXyzProtocol,
                           };
     const int count = sizeof(protos) / sizeof(Protocol *);
     for (int i = 0; i < count; ++i) {
diff --git a/src/plugins/cpaster/frontend/frontend.pro b/src/plugins/cpaster/frontend/frontend.pro
index d414abce9bc..70d2e4339de 100644
--- a/src/plugins/cpaster/frontend/frontend.pro
+++ b/src/plugins/cpaster/frontend/frontend.pro
@@ -14,6 +14,7 @@ HEADERS = ../protocol.h \
     ../cpasterconstants.h \
     ../pastebindotcomprotocol.h \
     ../pastebindotcaprotocol.h \
+    ../pastecodedotxyzprotocol.h \
     ../kdepasteprotocol.h \
     ../urlopenprotocol.h \
     argumentscollector.h
@@ -21,6 +22,7 @@ HEADERS = ../protocol.h \
 SOURCES += ../protocol.cpp \
     ../pastebindotcomprotocol.cpp \
     ../pastebindotcaprotocol.cpp \
+    ../pastecodedotxyzprotocol.cpp \
     ../kdepasteprotocol.cpp \
     ../urlopenprotocol.cpp \
     argumentscollector.cpp \
diff --git a/src/plugins/cpaster/frontend/frontend.qbs b/src/plugins/cpaster/frontend/frontend.qbs
index 552ac573751..385c2121a1e 100644
--- a/src/plugins/cpaster/frontend/frontend.qbs
+++ b/src/plugins/cpaster/frontend/frontend.qbs
@@ -26,6 +26,7 @@ QtcTool {
             "kdepasteprotocol.h", "kdepasteprotocol.cpp",
             "pastebindotcaprotocol.h", "pastebindotcaprotocol.cpp",
             "pastebindotcomprotocol.h", "pastebindotcomprotocol.cpp",
+            "pastecodedotxyzprotocol.h", "pastecodedotxyzprotocol.cpp",
             "protocol.h", "protocol.cpp",
             "urlopenprotocol.h", "urlopenprotocol.cpp",
         ]
diff --git a/src/plugins/cpaster/frontend/main.cpp b/src/plugins/cpaster/frontend/main.cpp
index 2789ebdb510..05faa188455 100644
--- a/src/plugins/cpaster/frontend/main.cpp
+++ b/src/plugins/cpaster/frontend/main.cpp
@@ -27,6 +27,7 @@
 #include "../kdepasteprotocol.h"
 #include "../pastebindotcaprotocol.h"
 #include "../pastebindotcomprotocol.h"
+#include "../pastecodedotxyzprotocol.h"
 
 #include <QFile>
 #include <QObject>
@@ -52,6 +53,8 @@ public:
             m_protocol.reset(new PasteBinDotCaProtocol);
         else if (protocol == PasteBinDotComProtocol::protocolName().toLower())
             m_protocol.reset(new PasteBinDotComProtocol);
+        else if (protocol == PasteCodeDotXyzProtocol::protocolName().toLower())
+            m_protocol.reset(new PasteCodeDotXyzProtocol);
         else
             qFatal("Internal error: Invalid protocol.");
     }
@@ -93,7 +96,8 @@ int main(int argc, char *argv[])
 
     const QStringList protocols = {KdePasteProtocol::protocolName().toLower(),
                                    PasteBinDotCaProtocol::protocolName().toLower(),
-                                   PasteBinDotComProtocol::protocolName().toLower()};
+                                   PasteBinDotComProtocol::protocolName().toLower(),
+                                   PasteCodeDotXyzProtocol::protocolName().toLower()};
     ArgumentsCollector argsCollector(protocols);
     QStringList arguments = QCoreApplication::arguments();
     arguments.removeFirst();
diff --git a/src/plugins/cpaster/pastecodedotxyzprotocol.cpp b/src/plugins/cpaster/pastecodedotxyzprotocol.cpp
new file mode 100644
index 00000000000..e2ed3a1b048
--- /dev/null
+++ b/src/plugins/cpaster/pastecodedotxyzprotocol.cpp
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "pastecodedotxyzprotocol.h"
+
+#include <coreplugin/messagemanager.h>
+
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonParseError>
+#include <QJsonValue>
+#include <QNetworkReply>
+#include <QUrl>
+
+namespace CodePaster {
+
+static QString baseUrl() { return "https://pastecode.xyz"; }
+static QString apiUrl() { return baseUrl() + "/api"; }
+
+QString PasteCodeDotXyzProtocol::protocolName() { return "Pastecode.Xyz"; }
+
+unsigned PasteCodeDotXyzProtocol::capabilities() const
+{
+    return ListCapability | PostDescriptionCapability | PostUserNameCapability;
+}
+
+void PasteCodeDotXyzProtocol::fetch(const QString &id)
+{
+    QNetworkReply * const reply = httpGet(baseUrl() + "/view/raw/" + id);
+    connect(reply, &QNetworkReply::finished, this, [this, id, reply] {
+        QString title;
+        QString content;
+        const bool error = reply->error();
+        if (error) {
+            content = reply->errorString();
+        } else {
+            title = name() + ": " + id;
+            content = QString::fromUtf8(reply->readAll());
+        }
+        reply->deleteLater();
+        emit fetchDone(title, content, error);
+    });
+}
+
+void PasteCodeDotXyzProtocol::paste(const QString &text, Protocol::ContentType ct, int expiryDays,
+                                    const QString &username, const QString &comment,
+                                    const QString &description)
+{
+    QByteArray data;
+    data += "text=" + QUrl::toPercentEncoding(fixNewLines(text));
+    data += "&expire=" + QUrl::toPercentEncoding(QString::number(expiryDays * 24 * 60));
+    data += "&title=" + QUrl::toPercentEncoding(description);
+    data += "&name=" + QUrl::toPercentEncoding(username);
+    static const auto langValue = [](Protocol::ContentType type) -> QByteArray {
+        switch (type) {
+        case Protocol::Text: return "text";
+        case Protocol::C: return "c";
+        case Protocol::Cpp: return "cpp";
+        case Protocol::JavaScript: return "javascript";
+        case Protocol::Diff: return "diff";
+        case Protocol::Xml: return "xml";
+        }
+        return QByteArray(); // Crutch for compiler.
+    };
+    data += "&lang=" + langValue(ct);
+    Q_UNUSED(comment);
+
+    QNetworkReply * const reply = httpPost(apiUrl() + "/create", data);
+    connect(reply, &QNetworkReply::finished, this, [this, reply] {
+        QString data;
+        if (reply->error()) {
+            reportError(reply->errorString()); // FIXME: Why can't we properly emit an error here?
+        } else {
+            data = QString::fromUtf8(reply->readAll());
+            if (!data.startsWith(baseUrl())) {
+                reportError(data);
+                data.clear();
+            }
+        }
+        reply->deleteLater();
+        emit pasteDone(data);
+    });
+}
+
+void PasteCodeDotXyzProtocol::list()
+{
+    QNetworkReply * const reply = httpGet(apiUrl() + "/recent");
+    connect(reply, &QNetworkReply::finished, this, [this, reply] {
+        QStringList ids;
+        if (reply->error()) {
+            reportError(reply->errorString());
+        } else {
+            QJsonParseError parseError;
+            const QJsonDocument jsonData = QJsonDocument::fromJson(reply->readAll(), &parseError);
+            if (parseError.error != QJsonParseError::NoError) {
+                reportError(parseError.errorString());
+            } else {
+                const QJsonArray jsonList = jsonData.array();
+                for (auto it = jsonList.constBegin(); it != jsonList.constEnd(); ++it) {
+                    const QString id = it->toObject().value("pid").toString();
+                    if (!id.isEmpty())
+                        ids << id;
+                }
+            }
+        }
+        emit listDone(name(), ids);
+        reply->deleteLater();
+    });
+}
+
+bool PasteCodeDotXyzProtocol::checkConfiguration(QString *errorMessage)
+{
+    if (!m_hostKnownOk)
+        m_hostKnownOk = httpStatus(apiUrl(), errorMessage);
+    return m_hostKnownOk;
+}
+
+void PasteCodeDotXyzProtocol::reportError(const QString &message)
+{
+    const QString fullMessage = tr("%1: %2").arg(protocolName(), message);
+    Core::MessageManager::write(fullMessage, Core::MessageManager::ModeSwitch);
+}
+
+} // namespace CodePaster
diff --git a/src/plugins/cpaster/pastecodedotxyzprotocol.h b/src/plugins/cpaster/pastecodedotxyzprotocol.h
new file mode 100644
index 00000000000..7988ad9dc8e
--- /dev/null
+++ b/src/plugins/cpaster/pastecodedotxyzprotocol.h
@@ -0,0 +1,57 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include "protocol.h"
+
+namespace CodePaster {
+
+class PasteCodeDotXyzProtocol : public NetworkProtocol
+{
+    Q_OBJECT
+public:
+    static QString protocolName();
+
+private:
+    QString name() const override { return protocolName(); }
+    bool hasSettings() const override { return false; }
+    unsigned capabilities() const override;
+    void fetch(const QString &id) override;
+    void paste(const QString &text,
+               ContentType ct = Text,
+               int expiryDays = 1,
+               const QString &username = QString(),
+               const QString &comment = QString(),
+               const QString &description = QString()) override;
+    void list() override;
+    bool checkConfiguration(QString *errorMessage) override;
+
+    static void reportError(const QString &message);
+
+    bool m_hostKnownOk = false;
+};
+
+} // namespace CodePaster