From e3cea8582f1f860ba2a25bbfb174fbcbcd306c9a Mon Sep 17 00:00:00 2001
From: Ilya Kitaev <mbg033@gmail.com>
Date: Sat, 8 Oct 2016 01:22:45 +0300
Subject: [PATCH] TransactionHistory: firstDateTime and lastDateTime properties

---
 src/libwalletqt/TransactionHistory.cpp | 35 ++++++++++++++++++++++++--
 src/libwalletqt/TransactionHistory.h   |  9 +++++++
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/src/libwalletqt/TransactionHistory.cpp b/src/libwalletqt/TransactionHistory.cpp
index e94816f2..7fd7c7bc 100644
--- a/src/libwalletqt/TransactionHistory.cpp
+++ b/src/libwalletqt/TransactionHistory.cpp
@@ -28,13 +28,33 @@ QList<TransactionInfo *> TransactionHistory::getAll() const
     emit refreshStarted();
     qDeleteAll(m_tinfo);
     m_tinfo.clear();
+
+    QDateTime firstDateTime = QDateTime::currentDateTime();
+    QDateTime lastDateTime  = QDateTime(QDate(1970, 1, 1));
+
     TransactionHistory * parent = const_cast<TransactionHistory*>(this);
     for (const auto i : m_pimpl->getAll()) {
         TransactionInfo * ti = new TransactionInfo(i, parent);
-        qDebug() << ti->hash();
         m_tinfo.append(ti);
+        // looking for transactions timestamp scope
+        if (ti->timestamp() >= lastDateTime) {
+            lastDateTime = ti->timestamp();
+        }
+        if (ti->timestamp() <= firstDateTime) {
+            firstDateTime = ti->timestamp();
+        }
     }
     emit refreshFinished();
+
+    if (m_firstDateTime != firstDateTime) {
+        m_firstDateTime = firstDateTime;
+        emit firstDateTimeChanged();
+    }
+    if (m_lastDateTime != lastDateTime) {
+        m_lastDateTime = lastDateTime;
+        emit lastDateTimeChanged();
+    }
+
     return m_tinfo;
 }
 
@@ -51,9 +71,20 @@ quint64 TransactionHistory::count() const
     return m_tinfo.count();
 }
 
+QDateTime TransactionHistory::firstDateTime() const
+{
+    return m_firstDateTime;
+}
+
+QDateTime TransactionHistory::lastDateTime() const
+{
+    return m_lastDateTime;
+}
+
 
 TransactionHistory::TransactionHistory(Bitmonero::TransactionHistory *pimpl, QObject *parent)
     : QObject(parent), m_pimpl(pimpl)
 {
-    // this->refresh();
+    m_firstDateTime = QDateTime(QDate(1970, 1, 1));
+    m_lastDateTime  = QDateTime::currentDateTime();
 }
diff --git a/src/libwalletqt/TransactionHistory.h b/src/libwalletqt/TransactionHistory.h
index d7a7278e..ee05787a 100644
--- a/src/libwalletqt/TransactionHistory.h
+++ b/src/libwalletqt/TransactionHistory.h
@@ -3,6 +3,7 @@
 
 #include <QObject>
 #include <QList>
+#include <QDateTime>
 
 namespace Bitmonero {
 class TransactionHistory;
@@ -14,6 +15,8 @@ class TransactionHistory : public QObject
 {
     Q_OBJECT
     Q_PROPERTY(int count READ count)
+    Q_PROPERTY(QDateTime firstDateTime READ firstDateTime NOTIFY firstDateTimeChanged)
+    Q_PROPERTY(QDateTime lastDateTime READ lastDateTime NOTIFY lastDateTimeChanged)
 
 public:
     Q_INVOKABLE TransactionInfo *transaction(int index);
@@ -21,10 +24,14 @@ public:
     Q_INVOKABLE QList<TransactionInfo*> getAll() const;
     Q_INVOKABLE void refresh();
     quint64 count() const;
+    QDateTime firstDateTime() const;
+    QDateTime lastDateTime() const;
 
 signals:
     void refreshStarted() const;
     void refreshFinished() const;
+    void firstDateTimeChanged() const;
+    void lastDateTimeChanged() const;
 
 public slots:
 
@@ -37,6 +44,8 @@ private:
 
     Bitmonero::TransactionHistory * m_pimpl;
     mutable QList<TransactionInfo*> m_tinfo;
+    mutable QDateTime   m_firstDateTime;
+    mutable QDateTime   m_lastDateTime;
 
 };