Allow user control of threshold

src/node/consumer/src/lib/models/configuration/metadata_config.ts

@@ -1,4 +1,5 @@
 export const metadataConfig = {
     IMDB_CONCURRENT: parseInt(process.env.IMDB_CONCURRENT || "1", 10),
-    IMDB_INTERVAL_MS: parseInt(process.env.IMDB_INTERVAL_MS || "1000", 10)
+    IMDB_INTERVAL_MS: parseInt(process.env.IMDB_INTERVAL_MS || "1000", 10),
+    TITLE_MATCH_THRESHOLD: Number(process.env.TITLE_MATCH_THRESHOLD || 0.25),
 };

src/node/consumer/src/lib/mongo/mongo_repository.ts

@@ -13,7 +13,7 @@ import mongoose from 'mongoose';
 const fuseOptions : IFuseOptions<IImdbEntry> = {
     includeScore: true,
     keys: ['PrimaryTitle', 'OriginalTitle'],
-    threshold: 0.25,
+    threshold: configurationService.metadataConfig.TITLE_MATCH_THRESHOLD,
 };
 
 @injectable()