Revert "Refactor"

This reverts commit 54f4eba561.

Signed-off-by: sblausten <sam@roadie.io>

plugins/tech-insights-node/src/facts.ts

@@ -21,7 +21,6 @@ import {
   TokenManager,
 } from '@backstage/backend-common';
 import { Logger } from 'winston';
-import { FactRetriever } from '@backstage/plugin-tech-insights-common';
 
 /**
  * A container for facts. The shape of the fact records needs to correspond to the FactSchema with same `ref` value.
@@ -154,6 +153,63 @@ export type FactRetrieverContext = {
     | Record<string, string | symbol | (string | symbol)[]>;
 };
 
+/**
+ * FactRetriever interface
+ *
+ * @public
+ */
+export interface FactRetriever {
+  /**
+   * A unique identifier of the retriever.
+   * Used to identify and store individual facts returned from this retriever
+   * and schemas defined by this retriever.
+   */
+  id: string;
+
+  /**
+   * Semver string indicating the version of this fact retriever
+   * This version is used to determine if the schema this fact retriever matches the data this fact retriever provides.
+   *
+   * Should be incremented on changes to returned data from the handler or if the schema changes.
+   */
+  version: string;
+
+  /**
+   * A short display title for the fact retriever to be used in the interface
+   */
+  title: string;
+
+  /**
+   * A short display description for the fact retriever to be used in the interface.
+   */
+  description: string;
+
+  /**
+   * Handler function that needs to be implemented to retrieve fact values for entities.
+   *
+   * @param ctx - FactRetrieverContext which can be used to retrieve config and contact integrations
+   * @returns - A collection of TechInsightFacts grouped by entities.
+   */
+  handler: (ctx: FactRetrieverContext) => Promise<TechInsightFact[]>;
+
+  /**
+   * A fact schema defining the shape of data returned from the handler method for each entity
+   */
+  schema: FactSchema;
+
+  /**
+   * An optional object/array of objects of entity filters to indicate if this fact retriever is valid for an entity type.
+   * If omitted, the retriever should apply to all entities.
+   *
+   * Should be defined for example:
+   *   \{ field: 'kind', values: \['component'\] \}
+   *   \{ field: 'metadata.name', values: \['component-1', 'component-2'\] \}
+   */
+  entityFilter?:
+    | Record<string, string | symbol | (string | symbol)[]>[]
+    | Record<string, string | symbol | (string | symbol)[]>;
+}
+
 /**
  * A Luxon duration like object for time to live value
  *