Allowed custom release types + handle more MusicBrainz secondary types in UI. fixes #373

src/libs/database/impl/Migration.cpp

@@ -267,6 +267,31 @@ CREATE TABLE IF NOT EXISTS "track_backup" (
         session.getDboSession().execute("UPDATE scan_settings SET scan_version = scan_version + 1");
     }
 
+    void migrateFromV47(Session& session)
+    {
+        // release type, new way
+        session.getDboSession().execute("ALTER TABLE release DROP primary_type");
+        session.getDboSession().execute("ALTER TABLE release DROP secondary_types");
+
+        session.getDboSession().execute(R"(CREATE TABLE IF NOT EXISTS "release_type" (
+  "id" integer primary key autoincrement,
+  "version" integer not null,
+  "name" text not null))");
+
+        session.getDboSession().execute(R"(CREATE TABLE IF NOT EXISTS "release_release_type" (
+  "release_type_id" bigint,
+  "release_id" bigint,
+  primary key ("release_type_id", "release_id"),
+  constraint "fk_release_release_type_key1" foreign key ("release_type_id") references "release_type" ("id") on delete cascade deferrable initially deferred,
+  constraint "fk_release_release_type_key2" foreign key ("release_id") references "release" ("id") on delete cascade deferrable initially deferred
+))");
+        session.getDboSession().execute(R"(CREATE INDEX "release_release_type_release_type" on "release_release_type" ("release_type_id"))");
+        session.getDboSession().execute(R"(CREATE INDEX "release_release_type_release" on "release_release_type" ("release_id"))");
+
+        // Just increment the scan version of the settings to make the next scheduled scan rescan everything
+        session.getDboSession().execute("UPDATE scan_settings SET scan_version = scan_version + 1");
+    }
+
     void doDbMigration(Session& session)
     {
         static const std::string outdatedMsg{ "Outdated database, please rebuild it (delete the .db file and restart)" };
@@ -292,6 +317,7 @@ CREATE TABLE IF NOT EXISTS "track_backup" (
             {44, migrateFromV44},
             {45, migrateFromV45},
             {46, migrateFromV46},
+            {47, migrateFromV47},
         };
 
         {