Media: Ensure subType isn't null

src/Media.cpp

@@ -571,7 +571,9 @@ void Media::createTable( sqlite::Connection* connection )
     std::string req = "CREATE TABLE IF NOT EXISTS " + policy::MediaTable::Name + "("
             "id_media INTEGER PRIMARY KEY AUTOINCREMENT,"
             "type INTEGER,"
-            "subtype INTEGER,"
+            "subtype INTEGER NOT NULL DEFAULT " +
+                std::to_string( static_cast<typename std::underlying_type<IMedia::SubType>::type>(
+                                    IMedia::SubType::Unknown ) ) + ","
             "duration INTEGER DEFAULT -1,"
             "play_count UNSIGNED INTEGER,"
             "last_played_date UNSIGNED INTEGER,"

src/database/migrations/migration13-14.sql

@@ -27,7 +27,9 @@
 "CREATE TABLE " + MediaTable::Name + "("
     "id_media INTEGER PRIMARY KEY AUTOINCREMENT,"
     "type INTEGER,"
-    "subtype INTEGER,"
+    "subtype INTEGER NOT NULL DEFAULT " +
+        std::to_string( static_cast<typename std::underlying_type<IMedia::SubType>::type>(
+                            IMedia::SubType::Unknown ) ) + ","
     "duration INTEGER DEFAULT -1,"
     "play_count UNSIGNED INTEGER,"
     "last_played_date UNSIGNED INTEGER,"
@@ -47,7 +49,10 @@
     "id_media, type, subtype, duration, play_count, last_played_date, insertion_date,"
     "release_date, thumbnail_id, thumbnail_generated, title, filename, is_favorite,"
     "is_present) "
-"SELECT id_media, type, subtype, duration, play_count, last_played_date,"
+"SELECT id_media, type, ifnull(subtype, " +
+        std::to_string( static_cast<typename std::underlying_type<IMedia::SubType>::type>(
+                    IMedia::SubType::Unknown ) )
+    + "), duration, play_count, last_played_date,"
     "insertion_date, release_date, "
     "CASE thumbnail WHEN NULL THEN 0 WHEN '' THEN 0 ELSE id_media END,"
     "CASE thumbnail WHEN NULL THEN 0 WHEN '' THEN 0 ELSE 1 END,"