From c9d9cfe5b7f6d0d3c986bad3dd1960dce46b0750 Mon Sep 17 00:00:00 2001
From: Volodymyr Kozieiev <vkjr.sp@gmail.com>
Date: Sat, 23 Dec 2017 15:51:31 +0200
Subject: [PATCH] Added randomBytes() function

---
 rnrandombytesdesktop.cpp | 32 +++++++++++++++++++++++++++-----
 rnrandombytesdesktop.h   |  8 +++++---
 2 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/rnrandombytesdesktop.cpp b/rnrandombytesdesktop.cpp
index 1227d59..f8a8616 100644
--- a/rnrandombytesdesktop.cpp
+++ b/rnrandombytesdesktop.cpp
@@ -16,13 +16,13 @@
 #include "rnrandombytesdesktop.h"
 #include <QCryptographicHash>
 #include <QDateTime>
+#include <QDebug>
 #include <QMap>
 #include <QNetworkDiskCache>
 #include <QNetworkReply>
 #include <QNetworkRequest>
 #include <QQuickImageProvider>
 
-
 namespace {
 struct RegisterQMLMetaType {
     RegisterQMLMetaType() {
@@ -35,18 +35,35 @@ class RNRandomBytesPrivate {
 
 public:
     RNRandomBytesPrivate() {
-        qsrand(QDateTime::currentDateTime().currentMSecsSinceEpoch());
-        while (seed.size() < 4096) {
-            seed.append(QChar(qrand()));
-        }
+        seed = generateRandomBytes(4096);
     }
+
+    QString generateRandomBytes(int size);
+
     QString seed;
+    Bridge* bridge = nullptr;
 };
 
 RNRandomBytes::RNRandomBytes(QObject* parent) : QObject(parent), d_ptr(new RNRandomBytesPrivate) {}
 
 RNRandomBytes::~RNRandomBytes() {}
 
+QString RNRandomBytesPrivate::generateRandomBytes(int size) {
+    QString randomString;
+    qsrand(QDateTime::currentDateTime().currentMSecsSinceEpoch());
+    while (randomString.size() < size) {
+        randomString.append(QChar(qrand()));
+    }
+    return randomString;
+}
+
+void RNRandomBytes::randomBytes(int length, double funcId) {
+    Q_D(RNRandomBytes);
+    if (d->bridge) {
+        d->bridge->invokePromiseCallback(funcId, QVariantList{"", d->generateRandomBytes(length)});
+    }
+}
+
 QString RNRandomBytes::moduleName() {
     return "RNRandomBytes";
 }
@@ -58,3 +75,8 @@ QList<ModuleMethod*> RNRandomBytes::methodsToExport() {
 QVariantMap RNRandomBytes::constantsToExport() {
     return QVariantMap{{"seed", d_ptr->seed}};
 }
+
+void RNRandomBytes::setBridge(Bridge* bridge) {
+    Q_D(RNRandomBytes);
+    d->bridge = bridge;
+}
diff --git a/rnrandombytesdesktop.h b/rnrandombytesdesktop.h
index f86fc5c..4eea244 100644
--- a/rnrandombytesdesktop.h
+++ b/rnrandombytesdesktop.h
@@ -34,9 +34,11 @@ public:
     Q_INVOKABLE RNRandomBytes(QObject* parent = 0);
     ~RNRandomBytes();
 
-    QString moduleName() override;
-    QList<ModuleMethod*> methodsToExport() override;
-    QVariantMap constantsToExport() override;
+    Q_INVOKABLE void randomBytes(int length, double funcId);
+    virtual QString moduleName() override;
+    virtual QList<ModuleMethod*> methodsToExport() override;
+    virtual QVariantMap constantsToExport() override;
+    virtual void setBridge(Bridge* bridge) override;
 
 private:
     QScopedPointer<RNRandomBytesPrivate> d_ptr;