From 12f4214e6a3614bd787fc6027fb9025b15df34b1 Mon Sep 17 00:00:00 2001
From: Keshav Bhatt <keshavnrj@gmail.com>
Date: Mon, 31 May 2021 00:25:27 +0530
Subject: Added support for Opening whatsapp deeplinks

---
 src/main.cpp       |  6 +++---
 src/mainwindow.cpp | 34 ++++++++++++++++++++++++++++++++--
 2 files changed, 35 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/main.cpp b/src/main.cpp
index ebb0623..679b18e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -51,9 +51,9 @@ int main(int argc, char *argv[])
     QStringList argsList = app.arguments();
     qWarning()<<"Launching with argument"<<argsList;
     foreach (QString argStr, argsList) {
-        if(argStr.contains("http")){
-            qWarning()<<"Link passed as argument";
-            window.loadAppWithArgument(argsList.last());
+        if(argStr.contains("whatsapp://")){
+            qWarning()<<"Link passed as argument"<<argStr;
+            window.loadAppWithArgument(argStr);
         }
     }
     window.show();
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 9219d6f..93ba706 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -3,6 +3,7 @@
 #include <QInputDialog>
 #include <QRegularExpression>
 #include <QStyleHints>
+#include <QUrlQuery>
 #include <QWebEngineNotification>
 
 extern QString defaultUserAgentStr;
@@ -75,8 +76,37 @@ MainWindow::MainWindow(QWidget *parent)
 
 void MainWindow::loadAppWithArgument(const QString arg)
 {
-    qWarning()<<"Opening"<<arg;
-    this->webEngine->page()->load(QUrl(arg));
+    //https://faq.whatsapp.com/iphone/how-to-link-to-whatsapp-from-a-different-app/?lang=en
+
+    //The WhatsApp Messenger application
+    if(arg.contains("://app")){
+        qWarning()<<"WhatsApp Messenger application";
+        this->show(); //restore app
+        return;
+    }
+    //PASSED SCHEME whatsapp://send?text=Hello%2C%20World!&phone=919568388397"
+    //CONVERTED URI https://web.whatsapp.com/send?phone=919568388397&text=Hello%2C%20World
+    //New chat composer
+    if(arg.contains("send?") || arg.contains("send/?"))
+    {
+        QString newArg =  arg;
+        qWarning()<<"New chat composer";
+        newArg = newArg.replace("?","&");
+        QUrlQuery query(newArg);
+        qWarning()<<query.hasQueryItem("phone");
+        QString phone, phoneStr, text, textStr, urlStr;
+        //create send url equivalent
+        phone   = query.queryItemValue("phone");
+        text    = query.queryItemValue("text");
+
+        phoneStr = phone.isEmpty() ? "" : "phone="+phone;
+        textStr  = text.isEmpty() ? "" : "text="+text;
+
+        urlStr  = "https://web.whatsapp.com/send?"+phoneStr+"&"+textStr;
+        qWarning()<<"Loading"<<urlStr;
+        this->webEngine->page()->load(QUrl(urlStr));
+        return;
+    }
 }
 
 void MainWindow::updatePageTheme()
-- 
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