refactor streamer to use stream providers (e.g. to plugin web torrent)

src/Streamer/ReadStreamProvider/read-stream-creatable.provider.ts

@@ -0,0 +1,21 @@
+import { ReadStreamCreatable } from '../Interface/read-stream-creatable.interface';
+import { FileEntity } from '../../VideoFiles/Entity/file.entity';
+import { Inject, Injectable } from '@nestjs/common';
+import { ReadStreamCreatableProviderInterface } from './read-stream-creatable-provider.interface';
+
+export const ReadStreamCreatableProviders = 'ReadStreamCreatableProviders';
+
+@Injectable()
+export class ReadStreamCreatableProvider {
+  constructor(
+    @Inject(ReadStreamCreatableProviders)
+    private providers: Array<ReadStreamCreatableProviderInterface>,
+  ) {}
+  getReadStreamCreatable(fileEntity: FileEntity): Promise<ReadStreamCreatable> {
+    for (const provider of this.providers) {
+      if (provider.supports(fileEntity)) {
+        return provider.getReadStreamCreatable(fileEntity);
+      }
+    }
+  }
+}