MediaLibrary: Use a specific type for external media

In order not to confuse them with media we failed to parse

include/medialibrary/IMedia.h

@@ -52,6 +52,7 @@ class IMedia
             Unknown,
             Video,
             Audio,
+            External,
         };
         enum class SubType : uint8_t
         {

src/MediaLibrary.cpp

@@ -377,7 +377,7 @@ MediaPtr MediaLibrary::addMedia( const std::string& mrl )
     {
         return sqlite::Tools::withRetries( 3, [this, &mrl]() -> MediaPtr {
             auto t = m_dbConnection->newTransaction();
-            auto media = Media::create( this, IMedia::Type::Unknown, utils::file::fileName( mrl ) );
+            auto media = Media::create( this, IMedia::Type::External, utils::file::fileName( mrl ) );
             if ( media == nullptr )
                 return nullptr;
             if ( media->addExternalMrl( mrl, IFile::Type::Main ) == nullptr )

test/unittest/MediaTests.cpp

@@ -429,7 +429,7 @@ TEST_F( Medias, SortByFileSize )
 TEST_F( Medias, SetType )
 {
     auto m1 = std::static_pointer_cast<Media>( ml->addMedia( "media1.mp3" ) );
-    ASSERT_EQ( IMedia::Type::Unknown, m1->type() );
+    ASSERT_EQ( IMedia::Type::External, m1->type() );
 
     m1->setType( IMedia::Type::Video );
     m1->save();