dbhub: Show list of commits in Remote dock

When opening a clone of a remote database show a list of all branches,
releases, and tags in the Remote dock and show the commit list when
selecting one of them.

CMakeLists.txt

@@ -172,6 +172,7 @@ set(SQLB_MOC_HDR
 	src/TableBrowser.h
 	src/ImageViewer.h
 	src/RemoteLocalFilesModel.h
+	src/RemoteCommitsModel.h
 )
 
 set(SQLB_SRC
@@ -232,6 +233,7 @@ set(SQLB_SRC
 	src/sql/parser/sqlite3_parser.cpp
 	src/ImageViewer.cpp
 	src/RemoteLocalFilesModel.cpp
+	src/RemoteCommitsModel.cpp
 )
 
 set(SQLB_FORMS

src/RemoteCommitsModel.cpp

@@ -0,0 +1,140 @@
+#include <QTreeWidgetItem>
+
+#include "RemoteCommitsModel.h"
+#include "Settings.h"
+
+using json = nlohmann::json;
+
+RemoteCommitsModel::RemoteCommitsModel(QObject* parent) :
+    QAbstractItemModel(parent)
+{
+    QStringList header;
+    header << tr("Commit ID") << tr("Message") << tr("Date") << tr("Author");
+    rootItem = new QTreeWidgetItem(header);
+}
+
+RemoteCommitsModel::~RemoteCommitsModel()
+{
+    delete rootItem;
+}
+
+void RemoteCommitsModel::clear()
+{
+    beginResetModel();
+
+    // Remove all data except for the root item
+    while(rootItem->childCount())
+        delete rootItem->child(0);
+
+    endResetModel();
+}
+
+void RemoteCommitsModel::refresh(const std::string& json_data, const std::string& last_commit_id)
+{
+    // Clear previous items
+    clear();
+    beginResetModel();
+
+    // Read in all commits
+    json j = json::parse(json_data, nullptr, false);
+    std::unordered_map<std::string, json::iterator> commit_to_iterator;
+    for(auto it=j.begin();it!=j.end();++it)
+        commit_to_iterator.insert({it.value()["id"], it});
+
+    // Starting from the last commit add follow the chain up to the first commit
+    std::string parent_id = last_commit_id;
+    while(true)
+    {
+        if(commit_to_iterator.find(parent_id) == commit_to_iterator.end())
+            break;
+
+        json commit = commit_to_iterator[parent_id].value();
+
+        QTreeWidgetItem* item = new QTreeWidgetItem(rootItem);
+        item->setText(ColumnCommitId, QString::fromStdString(commit["id"]));
+        item->setText(ColumnMessage, QString::fromStdString(commit["message"]));
+        item->setText(ColumnDate, QString::fromStdString(commit["timestamp"]));
+        item->setText(ColumnAuthor, QString::fromStdString(commit["author_name"]) + " <" + QString::fromStdString(commit["author_email"]) + ">");
+
+        parent_id = commit["parent"];
+    }
+
+    // Refresh the view
+    endResetModel();
+}
+
+QModelIndex RemoteCommitsModel::index(int row, int column, const QModelIndex& parent) const
+{
+    if(!hasIndex(row, column, parent))
+        return QModelIndex();
+
+    QTreeWidgetItem *parentItem;
+    if(!parent.isValid())
+        parentItem = rootItem;
+    else
+        parentItem = static_cast<QTreeWidgetItem*>(parent.internalPointer());
+
+    QTreeWidgetItem* childItem = parentItem->child(row);
+    if(childItem)
+        return createIndex(row, column, childItem);
+    else
+        return QModelIndex();
+}
+
+QModelIndex RemoteCommitsModel::parent(const QModelIndex& index) const
+{
+    if(!index.isValid())
+        return QModelIndex();
+
+    QTreeWidgetItem* childItem = static_cast<QTreeWidgetItem*>(index.internalPointer());
+    QTreeWidgetItem* parentItem = childItem->parent();
+
+    if(parentItem == rootItem)
+        return QModelIndex();
+    else
+        return createIndex(0, 0, parentItem);
+}
+
+QVariant RemoteCommitsModel::data(const QModelIndex& index, int role) const
+{
+    if(!index.isValid())
+        return QVariant();
+
+    // Get the item the index points at
+    QTreeWidgetItem* item = static_cast<QTreeWidgetItem*>(index.internalPointer());
+
+    // Return data depending on the role
+    switch(role)
+    {
+    case Qt::DisplayRole:
+    case Qt::EditRole:
+        return item->text(index.column());
+    default:
+        return QVariant();
+    }
+}
+
+QVariant RemoteCommitsModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    // Get the header string from the root item
+    if(orientation == Qt::Horizontal && role == Qt::DisplayRole)
+        return rootItem->data(section, role);
+
+    return QVariant();
+}
+
+int RemoteCommitsModel::rowCount(const QModelIndex& parent) const
+{
+    if(parent.column() > 0)
+        return 0;
+
+    if(!parent.isValid())
+        return rootItem->childCount();
+    else
+        return static_cast<QTreeWidgetItem*>(parent.internalPointer())->childCount();
+}
+
+int RemoteCommitsModel::columnCount(const QModelIndex& /*parent*/) const
+{
+    return rootItem->columnCount();
+}

src/RemoteCommitsModel.h

@@ -0,0 +1,43 @@
+#ifndef REMOTECOMMITSMODEL_H
+#define REMOTECOMMITSMODEL_H
+
+#include <QAbstractItemModel>
+
+#include <json.hpp>
+
+class QTreeWidgetItem;
+
+class RemoteCommitsModel : public QAbstractItemModel
+{
+    Q_OBJECT
+
+public:
+    explicit RemoteCommitsModel(QObject* parent);
+    ~RemoteCommitsModel() override;
+
+    void clear();
+    void refresh(const std::string& json_data, const std::string& last_commit_id);
+
+    QModelIndex index(int row, int column,const QModelIndex& parent = QModelIndex()) const override;
+    QModelIndex parent(const QModelIndex& index) const override;
+
+    QVariant data(const QModelIndex& index, int role) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+
+    int rowCount(const QModelIndex& parent = QModelIndex()) const override;
+    int columnCount(const QModelIndex& parent = QModelIndex()) const override;
+
+    enum Columns
+    {
+        ColumnCommitId,
+        ColumnMessage,
+        ColumnDate,
+        ColumnAuthor,
+    };
+
+private:
+    // Pointer to the root item. This contains all the actual item data.
+    QTreeWidgetItem* rootItem;
+};
+
+#endif

src/RemoteDatabase.cpp

@@ -309,6 +309,41 @@ void RemoteDatabase::gotReply(QNetworkReply* reply)
             emit uploadFinished(obj["url"]);
             break;
         }
+    case RequestTypeMetadata:
+        {
+            // Read and check results
+            json obj = json::parse(reply->readAll(), nullptr, false);
+            if(obj.is_discarded() || !obj.is_object())
+                break;
+
+            // Extract and convert data
+            json obj_branches = obj["branches"];
+            json obj_commits = obj["commits"];
+            json obj_releases = obj["releases"];
+            json obj_tags = obj["tags"];
+            std::string default_branch = (obj.contains("default_branch") && !obj["default_branch"].empty()) ? obj["default_branch"] : "master";
+            std::vector<RemoteMetadataBranchInfo> branches;
+            for(auto it=obj_branches.cbegin();it!=obj_branches.cend();++it)
+                branches.emplace_back(it.key(), it.value()["commit"], it.value()["description"], it.value()["commit_count"]);
+            std::vector<RemoteMetadataReleaseInfo> releases;
+            for(auto it=obj_releases.cbegin();it!=obj_releases.cend();++it)
+            {
+                releases.emplace_back(it.key(), it.value()["commit"], it.value()["date"],
+                        it.value()["description"], it.value()["email"],
+                        it.value()["name"], it.value()["size"]);
+            }
+            std::vector<RemoteMetadataReleaseInfo> tags;
+            for(auto it=obj_tags.cbegin();it!=obj_tags.cend();++it)
+            {
+                tags.emplace_back(it.key(), it.value()["commit"], it.value()["date"],
+                        it.value()["description"], it.value()["email"],
+                        it.value()["name"], 0);
+            }
+
+            // Send data list to anyone who is interested
+            emit gotMetadata(branches, obj_commits.dump(), releases, tags, default_branch);
+            break;
+        }
     }
 
     // Delete reply later, i.e. after returning from this slot function

src/RemoteDatabase.h

@@ -15,6 +15,52 @@ class QHttpMultiPart;
 class QFile;
 struct sqlite3;
 
+class RemoteMetadataBranchInfo
+{
+public:
+    RemoteMetadataBranchInfo(const std::string& _name, const std::string& _commit_id, const std::string& _description, unsigned int _commit_count) :
+        name(_name),
+        commit_id(_commit_id),
+        description(_description),
+        commit_count(_commit_count)
+    {}
+    RemoteMetadataBranchInfo() :
+        commit_count(0)
+    {}
+
+    std::string name;
+    std::string commit_id;
+    std::string description;
+    unsigned int commit_count;
+};
+
+class RemoteMetadataReleaseInfo
+{
+public:
+    RemoteMetadataReleaseInfo(const std::string& _name, const std::string& _commit_id, const std::string& _date,
+                              const std::string& _description, const std::string& _email,
+                              const std::string& _user_name, unsigned int _size) :
+        name(_name),
+        commit_id(_commit_id),
+        date(_date),
+        description(_description),
+        email(_email),
+        user_name(_user_name),
+        size(_size)
+    {}
+    RemoteMetadataReleaseInfo() :
+        size(0)
+    {}
+
+    std::string name;
+    std::string commit_id;
+    std::string date;
+    std::string description;
+    std::string email;
+    std::string user_name;
+    unsigned long size;
+};
+
 class RemoteDatabase : public QObject
 {
     Q_OBJECT
@@ -43,6 +89,7 @@ public:
         RequestTypePush,
         RequestTypeLicenceList,
         RequestTypeBranchList,
+        RequestTypeMetadata,
     };
 
     void fetch(const QString& url, RequestType type, const QString& clientCert = QString(), QVariant userdata = QVariant());
@@ -98,6 +145,9 @@ signals:
     void gotCurrentVersion(QString version, QString url);
     void gotLicenceList(std::vector<std::pair<std::string, std::string>> licences);
     void gotBranchList(std::vector<std::string> branches, std::string default_branch);
+    void gotMetadata(std::vector<RemoteMetadataBranchInfo> branches, std::string commits,
+                     std::vector<RemoteMetadataReleaseInfo> releases, std::vector<RemoteMetadataReleaseInfo> tags,
+                     std::string default_branch);
 
     // The uploadFinished() signal is emitted when a push() call is finished, i.e. a database upload has completed.
     void uploadFinished(std::string url);

src/RemoteDock.cpp

@@ -1,10 +1,12 @@
 #include <QDesktopServices>
 #include <QFileInfo>
 #include <QUrl>
+#include <QUrlQuery>
 
 #include "RemoteDock.h"
 #include "ui_RemoteDock.h"
 #include "Settings.h"
+#include "RemoteCommitsModel.h"
 #include "RemoteDatabase.h"
 #include "RemoteLocalFilesModel.h"
 #include "RemoteModel.h"
@@ -18,13 +20,15 @@ RemoteDock::RemoteDock(MainWindow* parent)
       mainWindow(parent),
       remoteDatabase(parent->getRemote()),
       remoteModel(new RemoteModel(this, parent->getRemote())),
-      remoteLocalFilesModel(new RemoteLocalFilesModel(this, parent->getRemote()))
+      remoteLocalFilesModel(new RemoteLocalFilesModel(this, parent->getRemote())),
+      remoteCommitsModel(new RemoteCommitsModel(this))
 {
     ui->setupUi(this);
 
     // Set models
     ui->treeRemote->setModel(remoteModel);
     ui->treeLocal->setModel(remoteLocalFilesModel);
+    ui->treeDatabaseCommits->setModel(remoteCommitsModel);
 
     // When a database has been downloaded and must be opened, notify users of this class
     connect(&remoteDatabase, &RemoteDatabase::openFile, this, &RemoteDock::openFile);
@@ -37,6 +41,9 @@ RemoteDock::RemoteDock(MainWindow* parent)
     // Whenever a new directory listing has been parsed, check if it was a new root dir and, if so, open the user's directory
     connect(remoteModel, &RemoteModel::directoryListingParsed, this, &RemoteDock::newDirectoryNode);
 
+    // Show metadata for a database when we get it
+    connect(&remoteDatabase, &RemoteDatabase::gotMetadata, this, &RemoteDock::showMetadata);
+
     // When the Preferences link is clicked in the no-certificates-label, open the preferences dialog. For other links than the ones we know,
     // just open them in a web browser
     connect(ui->labelNoCert, &QLabel::linkActivated, [this](const QString& link) {
@@ -50,6 +57,12 @@ RemoteDock::RemoteDock(MainWindow* parent)
         }
     });
 
+    // When changing the current branch in the branches combo box, update the tree view accordingly
+    connect(ui->comboDatabaseBranch, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged), [this](int /*index*/) {
+        remoteCommitsModel->refresh(current_commit_json, ui->comboDatabaseBranch->currentData().toString().toStdString());
+        ui->treeDatabaseCommits->expandAll();
+    });
+
     // Initial setup
     reloadSettings();
 }
@@ -227,6 +240,7 @@ void RemoteDock::fileOpened(const QString& filename)
         info = remoteDatabase.localGetLocalFileInfo(filename);
 
     // Copy information to view
+    remoteCommitsModel->clear();
     ui->labelDatabaseUser->setText(info.user_name());
     ui->labelDatabaseFile->setText(QString::fromStdString(info.name));
     ui->labelDatabaseBranch->setText(QString::fromStdString(info.branch));
@@ -239,7 +253,33 @@ void RemoteDock::fileOpened(const QString& filename)
         if(QString::fromStdString(info.identity) != QFileInfo(remoteModel->currentClientCertificate()).fileName())
             ui->comboUser->setCurrentIndex(ui->comboUser->findData("/" + QString::fromStdString(info.identity), Qt::UserRole, Qt::MatchEndsWith));
 
+        // Query more information on database from server
+        QUrl url(remoteDatabase.getInfoFromClientCert(remoteModel->currentClientCertificate(), RemoteDatabase::CertInfoServer) + "/metadata/get");
+        QUrlQuery query;
+        query.addQueryItem("username", info.user_name());
+        query.addQueryItem("folder", "/");
+        query.addQueryItem("dbname", QString::fromStdString(info.name));
+        url.setQuery(query);
+        remoteDatabase.fetch(url.toString(), RemoteDatabase::RequestTypeMetadata, remoteModel->currentClientCertificate());
+
         // Switch to "Current Database" tab
         ui->tabs->setCurrentIndex(2);
     }
 }
+
+void RemoteDock::showMetadata(const std::vector<RemoteMetadataBranchInfo>& branches, const std::string& commits,
+                              const std::vector<RemoteMetadataReleaseInfo>& releases, const std::vector<RemoteMetadataReleaseInfo>& tags,
+                              const std::string& /*default_branch*/)
+{
+    current_commit_json = commits;
+
+    // Fill branches combo box
+    ui->comboDatabaseBranch->clear();
+    for(const auto& branch : branches)
+        ui->comboDatabaseBranch->addItem(QString::fromStdString(branch.name), QString::fromStdString(branch.commit_id));
+    for(const auto& release : releases)
+        ui->comboDatabaseBranch->addItem(QString::fromStdString(release.name) + " (" + tr("release") + ")", QString::fromStdString(release.commit_id));
+    for(const auto& tag : tags)
+        ui->comboDatabaseBranch->addItem(QString::fromStdString(tag.name) + " (" + tr("tag") + ")", QString::fromStdString(tag.commit_id));
+    ui->comboDatabaseBranch->setCurrentIndex(ui->comboDatabaseBranch->findText(ui->labelDatabaseBranch->text()));
+}

src/RemoteDock.h

@@ -3,7 +3,10 @@
 
 #include <QDialog>
 
+class RemoteCommitsModel;
 class RemoteDatabase;
+class RemoteMetadataBranchInfo;
+class RemoteMetadataReleaseInfo;
 class RemoteLocalFilesModel;
 class RemoteModel;
 class MainWindow;
@@ -39,6 +42,9 @@ private slots:
     void newDirectoryNode(const QModelIndex& parent);
     void switchToMainView();
     void openLocalFile(const QModelIndex& idx);
+    void showMetadata(const std::vector<RemoteMetadataBranchInfo>& branches, const std::string& commits,
+                      const std::vector<RemoteMetadataReleaseInfo>& releases, const std::vector<RemoteMetadataReleaseInfo>& tags,
+                      const std::string& default_branch);
 
 signals:
     void openFile(QString file);
@@ -51,6 +57,9 @@ private:
     RemoteDatabase& remoteDatabase;
     RemoteModel* remoteModel;
     RemoteLocalFilesModel* remoteLocalFilesModel;
+    RemoteCommitsModel* remoteCommitsModel;
+
+    std::string current_commit_json;
 
     void refreshLocalFileList();
 };

src/RemoteDock.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>534</width>
-    <height>298</height>
+    <height>357</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -129,56 +129,91 @@
           <attribute name="title">
            <string>Current Database</string>
           </attribute>
-          <layout class="QFormLayout" name="formLayout">
-           <item row="0" column="0">
-            <widget class="QLabel" name="label">
-             <property name="text">
-              <string>User</string>
+          <layout class="QVBoxLayout" name="verticalLayout_7">
+           <item>
+            <widget class="QGroupBox" name="groupBox">
+             <property name="title">
+              <string>Clone</string>
              </property>
+             <layout class="QFormLayout" name="formLayout">
+              <item row="0" column="0">
+               <widget class="QLabel" name="label">
+                <property name="text">
+                 <string>User</string>
+                </property>
+               </widget>
+              </item>
+              <item row="0" column="1">
+               <widget class="QLabel" name="labelDatabaseUser">
+                <property name="text">
+                 <string/>
+                </property>
+                <property name="textInteractionFlags">
+                 <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+                </property>
+               </widget>
+              </item>
+              <item row="1" column="0">
+               <widget class="QLabel" name="label_4">
+                <property name="text">
+                 <string>Database</string>
+                </property>
+               </widget>
+              </item>
+              <item row="1" column="1">
+               <widget class="QLabel" name="labelDatabaseFile">
+                <property name="text">
+                 <string/>
+                </property>
+                <property name="textInteractionFlags">
+                 <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+                </property>
+               </widget>
+              </item>
+              <item row="2" column="0">
+               <widget class="QLabel" name="label_6">
+                <property name="text">
+                 <string>Branch</string>
+                </property>
+               </widget>
+              </item>
+              <item row="2" column="1">
+               <widget class="QLabel" name="labelDatabaseBranch">
+                <property name="text">
+                 <string/>
+                </property>
+                <property name="textInteractionFlags">
+                 <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+                </property>
+               </widget>
+              </item>
+             </layout>
             </widget>
            </item>
-           <item row="0" column="1">
-            <widget class="QLabel" name="labelDatabaseUser">
-             <property name="text">
-              <string/>
-             </property>
-             <property name="textInteractionFlags">
-              <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="0">
-            <widget class="QLabel" name="label_4">
-             <property name="text">
-              <string>Database</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="1">
-            <widget class="QLabel" name="labelDatabaseFile">
-             <property name="text">
-              <string/>
-             </property>
-             <property name="textInteractionFlags">
-              <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
-             </property>
-            </widget>
-           </item>
-           <item row="2" column="0">
-            <widget class="QLabel" name="label_6">
-             <property name="text">
-              <string>Branch</string>
-             </property>
-            </widget>
-           </item>
-           <item row="2" column="1">
-            <widget class="QLabel" name="labelDatabaseBranch">
-             <property name="text">
-              <string/>
-             </property>
-             <property name="textInteractionFlags">
-              <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+           <item>
+            <widget class="QGroupBox" name="groupBox_2">
+             <property name="title">
+              <string>Commits</string>
              </property>
+             <layout class="QVBoxLayout" name="verticalLayout_6">
+              <item>
+               <layout class="QHBoxLayout" name="horizontalLayout_4">
+                <item>
+                 <widget class="QLabel" name="label_3">
+                  <property name="text">
+                   <string>Commits for</string>
+                  </property>
+                 </widget>
+                </item>
+                <item>
+                 <widget class="QComboBox" name="comboDatabaseBranch"/>
+                </item>
+               </layout>
+              </item>
+              <item>
+               <widget class="QTreeView" name="treeDatabaseCommits"/>
+              </item>
+             </layout>
             </widget>
            </item>
           </layout>

src/src.pro

@@ -22,6 +22,7 @@ CONFIG(unittest) {
 
 HEADERS += \
     ImageViewer.h \
+    RemoteCommitsModel.h \
     RemoteLocalFilesModel.h \
     sqlitedb.h \
     MainWindow.h \
@@ -84,6 +85,7 @@ HEADERS += \
 
 SOURCES += \
     ImageViewer.cpp \
+    RemoteCommitsModel.cpp \
     RemoteLocalFilesModel.cpp \
     sqlitedb.cpp \
     MainWindow.cpp \