feat: enhance IssuesProcessor to return label creation date and events, add stale label event checks

__tests__/classes/issues-processor-mock.ts

@@ -4,6 +4,7 @@ import {IComment} from '../../src/interfaces/comment';
 import {IIssuesProcessorOptions} from '../../src/interfaces/issues-processor-options';
 import {IPullRequest} from '../../src/interfaces/pull-request';
 import {IState} from '../../src/interfaces/state/state';
+import {IIssueEvent} from '../../src/interfaces/issue-event';
 
 export class IssuesProcessorMock extends IssuesProcessor {
   constructor(
@@ -17,7 +18,15 @@ export class IssuesProcessorMock extends IssuesProcessor {
     getLabelCreationDate?: (
       issue: Issue,
       label: string
-    ) => Promise<string | undefined>,
+    ) =>
+      | Promise<string | undefined>
+      | Promise<{creationDate?: string; events: IIssueEvent[]}>,
+    hasOnlyStaleLabelingEventsSince?: (
+      issue: Issue,
+      sinceDate: string,
+      staleLabel: string,
+      events: IIssueEvent[]
+    ) => Promise<boolean>,
     getPullRequest?: (issue: Issue) => Promise<IPullRequest | undefined | void>
   ) {
     super(options, state);
@@ -31,7 +40,21 @@ export class IssuesProcessorMock extends IssuesProcessor {
     }
 
     if (getLabelCreationDate) {
-      this.getLabelCreationDate = getLabelCreationDate;
+      this.getLabelCreationDate = async (
+        issue: Issue,
+        label: string
+      ): Promise<{creationDate?: string; events: IIssueEvent[]}> => {
+        const result = await getLabelCreationDate(issue, label);
+        if (typeof result === 'string' || typeof result === 'undefined') {
+          return {creationDate: result, events: []};
+        }
+
+        return result;
+      };
+    }
+
+    if (hasOnlyStaleLabelingEventsSince) {
+      this.hasOnlyStaleLabelingEventsSince = hasOnlyStaleLabelingEventsSince;
     }
 
     if (getPullRequest) {