Add hasMovie method to Plex service

api/plex/src/IpcClient.ts

@@ -24,4 +24,15 @@ export class IpcClient<M extends Microservice = Microservice> extends IpcClientS
         }
         return <{ [tmdbId: string]: string|null }>results.data;
     }
+
+    /**
+     * Check if the given movie is already on Plex
+     */
+    public async hasMovie(tmdbId: number|string) {
+        let results = await this.request("has_movie", tmdbId);
+        if (results.error) {
+            throw new Error("Failed to check if Plex has a movie");
+        }
+        return results.data;
+    }
 }

services/plex/src/services/IpcInterface.ts

@@ -20,6 +20,7 @@ export default class IpcInterface extends IpcServerService
 	 */
 	protected override installMessageHandlers() {
 		this.addMessageHandler("movie_links", this.movieLinks);
+		this.addMessageHandler("has_movie",   this.hasMovie);
 	}
 
 	/**
@@ -34,4 +35,11 @@ export default class IpcInterface extends IpcServerService
 			[k]: (plexKeys[i] !== null ? plexMediaUrl(plexKeys[i]!) : null)
 		}), {});
 	}
+
+	/**
+	 * Check if the given movie is currently on Plex
+	 */
+	protected async hasMovie(tmdbId: string) {
+		return await PlexMovie.exists(tmdbId);
+	}
 }