Stop tasks and show task progress (#181)

* Add job status to tasks page

* Add support for stopping task

* Show progress of some tasks

graphql/documents/queries/settings/metadata.graphql

@@ -16,4 +16,16 @@ query MetadataGenerate($input: GenerateMetadataInput!) {
 
 query MetadataClean {
   metadataClean
+}
+
+query JobStatus {
+  jobStatus {
+    progress
+    status
+    message
+  }
+}
+
+query StopJob {
+  stopJob
 }

graphql/documents/subscriptions.graphql

@@ -1,5 +1,9 @@
 subscription MetadataUpdate {
-  metadataUpdate
+  metadataUpdate {
+    progress
+    status
+    message
+  }
 }
 
 subscription LoggingSubscribe {

graphql/schema/schema.graphql

@@ -67,6 +67,9 @@ type Query {
   """Clean metadata. Returns the job ID"""
   metadataClean: String!
 
+  jobStatus: MetadataUpdateStatus!
+  stopJob: Boolean!
+
   # Get everything
 
   allPerformers: [Performer!]!
@@ -106,7 +109,7 @@ type Mutation {
 
 type Subscription {
   """Update from the metadata manager"""
-  metadataUpdate: String!
+  metadataUpdate: MetadataUpdateStatus!
 
   loggingSubscribe: [LogEntry!]!
 }

graphql/schema/types/metadata.graphql

@@ -7,4 +7,10 @@ input GenerateMetadataInput {
 
 input ScanMetadataInput {
   nameFromMetadata: Boolean!
+}
+
+type MetadataUpdateStatus {
+  progress: Float!
+	status: String!
+  message: String!
 }