Implement prototype Qml path function

src/utils/paths.cpp

@@ -1,6 +1,7 @@
 #include "paths.h"
 #include <QStandardPaths>
 #include <QString>
+#include <QFileInfo>
 #include <easylogging++.h>
 
 namespace paths
@@ -9,7 +10,6 @@ optional<string> binaryDirectory()
 {
     const auto path
         = QStandardPaths::writableLocation( QStandardPaths::AppDataLocation );
-
     if ( path == "" )
     {
         LOG( ERROR ) << "Could not find binary directory.";
@@ -23,7 +23,6 @@ optional<string> binaryDirectoryFindFile( const string fileName )
 {
     const auto path = QStandardPaths::locate(
         QStandardPaths::AppDataLocation, QString::fromStdString( fileName ) );
-
     if ( path == "" )
     {
         LOG( ERROR ) << "Could not find file '" << fileName.c_str()
@@ -34,4 +33,36 @@ optional<string> binaryDirectoryFindFile( const string fileName )
     return path.toStdString();
 }
 
+optional<string> qmlDirectory()
+{
+    const auto path
+        = QStandardPaths::locate( QStandardPaths::AppDataLocation, "res/qml/" );
+    if ( path == "" )
+    {
+        LOG( ERROR ) << "Unable to find QML directory.";
+        return std::nullopt;
+    }
+
+    return path.toStdString();
+}
+
+optional<string> qmlDirectoryFindFile( string fileName )
+{
+    const auto qmlPath = qmlDirectory();
+    if ( !qmlPath.has_value() )
+    {
+        return std::nullopt;
+    }
+
+    const auto path = ( *qmlPath ) + fileName;
+    QFileInfo filePath( QString::fromStdString( path ) );
+    if ( !filePath.exists() )
+    {
+        LOG( ERROR ) << "File: '" << path << "' not found.";
+        return std::nullopt;
+    }
+
+    return std::move( path );
+}
+
 } // namespace paths