From f438b94577093fd43c6013bcde51c680b200752d Mon Sep 17 00:00:00 2001
From: Jonas Carlsen <jonas.carlsen@knowit.no>
Date: Fri, 13 Mar 2026 09:59:56 +0100
Subject: [PATCH] feat: article revision history

---
 package.json                      |  2 +-
 src/api/articleApi.ts             | 12 +++++++++++-
 src/resolvers/articleResolvers.ts | 11 ++++++++++-
 src/schema.ts                     |  5 +++++
 src/types/schema.d.ts             | 19 +++++++++++++++++++
 yarn.lock                         | 10 +++++-----
 6 files changed, 51 insertions(+), 8 deletions(-)

diff --git a/package.json b/package.json
index 66a91447..1720bb54 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "@graphql-codegen/typescript-resolvers": "^5.1.7",
     "@graphql-eslint/eslint-plugin": "^4.4.0",
     "@graphql-tools/mock": "^9.1.5",
-    "@ndla/types-backend": "^1.0.106",
+    "@ndla/types-backend": "^1.0.107",
     "@ndla/types-embed": "^5.0.21-alpha.0",
     "@ndla/types-taxonomy": "^1.0.50",
     "@types/compression": "^1.8.1",
diff --git a/src/api/articleApi.ts b/src/api/articleApi.ts
index 75561748..ce5f07b5 100644
--- a/src/api/articleApi.ts
+++ b/src/api/articleApi.ts
@@ -6,7 +6,7 @@
  *
  */
 
-import { paths, ArticleV2DTO } from "@ndla/types-backend/article-api";
+import { paths, ArticleV2DTO, ArticleRevisionHistoryDTO } from "@ndla/types-backend/article-api";
 import { ndlaUrl } from "../config";
 import {
   GQLArticleTransformedContentArgs,
@@ -212,3 +212,13 @@ export async function fetchRevisions(articleId: number, _: Context): Promise<num
     })
     .then(resolveJsonOATS);
 }
+
+export async function fetchRevisionHistory(articleId: number, _: Context): Promise<ArticleRevisionHistoryDTO> {
+  return await client
+    .GET("/article-api/v2/articles/{article_id}/revision-history", {
+      params: {
+        path: { article_id: articleId },
+      },
+    })
+    .then(resolveJsonOATS);
+}
diff --git a/src/resolvers/articleResolvers.ts b/src/resolvers/articleResolvers.ts
index 5e96143a..452a1d17 100644
--- a/src/resolvers/articleResolvers.ts
+++ b/src/resolvers/articleResolvers.ts
@@ -6,7 +6,7 @@
  *
  */
 
-import { ArticleV2DTO } from "@ndla/types-backend/article-api";
+import { ArticleV2DTO, ArticleRevisionHistoryDTO } from "@ndla/types-backend/article-api";
 import { ConceptSummaryDTO } from "@ndla/types-backend/concept-api";
 import { fetchSubjectTopics, searchConcepts } from "../api";
 import {
@@ -16,6 +16,7 @@ import {
   fetchVisualElementEmbed,
   fetchRevisions,
   fetchArticle,
+  fetchRevisionHistory,
 } from "../api/articleApi";
 import { coreElements, fetchCrossSubjectTopicsByCode, grepSearch } from "../api/searchApi";
 import { ndlaUrl } from "../config";
@@ -26,6 +27,7 @@ import {
   GQLCrossSubjectElement,
   GQLImageMetaInformationV3,
   GQLQueryArticleArgs,
+  GQLQueryRevisionHistoryArgs,
   GQLQueryRevisionsArgs,
   GQLRelatedContent,
   GQLResourceEmbed,
@@ -39,6 +41,13 @@ export const Query = {
   async revisions(_: any, { articleId }: GQLQueryRevisionsArgs, context: ContextWithLoaders): Promise<number[]> {
     return fetchRevisions(articleId, context);
   },
+  async revisionHistory(
+    _: any,
+    { id }: GQLQueryRevisionHistoryArgs,
+    context: ContextWithLoaders,
+  ): Promise<ArticleRevisionHistoryDTO> {
+    return fetchRevisionHistory(id, context);
+  },
 };
 
 export const resolvers = {
diff --git a/src/schema.ts b/src/schema.ts
index ab419b5f..34ac26eb 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -708,6 +708,10 @@ export const typeDefs = gql`
     url: String!
   }
 
+  type ArticleRevisionHistory {
+    revision: [Article!]!
+  }
+
   type Article {
     id: Int!
     revision: Int!
@@ -1549,6 +1553,7 @@ export const typeDefs = gql`
     allMyNdlaResources(size: Int): [MyNdlaResource!]!
     recentlyFavoritedResources(size: Int): [MyNdlaResource!]!
     revisions(articleId: Int!): [Int!]!
+    revisionHistory(id: Int!): ArticleRevisionHistory
     personalData: MyNdlaPersonalData
     image(id: String!): ImageMetaInformationV3
     examLockStatus: ConfigMetaBoolean!
diff --git a/src/types/schema.d.ts b/src/types/schema.d.ts
index 4c181a48..95084052 100644
--- a/src/types/schema.d.ts
+++ b/src/types/schema.d.ts
@@ -105,6 +105,11 @@ export type GQLArticleRequiredLibrary = {
   url: Scalars['String']['output'];
 };
 
+export type GQLArticleRevisionHistory = {
+  __typename?: 'ArticleRevisionHistory';
+  revision: Array<GQLArticle>;
+};
+
 export type GQLArticleSearchResult = GQLSearchResult & {
   __typename?: 'ArticleSearchResult';
   context?: Maybe<GQLSearchContext>;
@@ -1449,6 +1454,7 @@ export type GQLQuery = {
   resourceEmbed: GQLResourceEmbed;
   resourceEmbeds: GQLResourceEmbed;
   resourceTypes?: Maybe<Array<GQLResourceTypeDefinition>>;
+  revisionHistory?: Maybe<GQLArticleRevisionHistory>;
   revisions: Array<Scalars['Int']['output']>;
   search?: Maybe<GQLSearch>;
   searchWithoutPagination?: Maybe<GQLSearchWithoutPagination>;
@@ -1674,6 +1680,11 @@ export type GQLQueryResourceEmbedsArgs = {
 };
 
 
+export type GQLQueryRevisionHistoryArgs = {
+  id: Scalars['Int']['input'];
+};
+
+
 export type GQLQueryRevisionsArgs = {
   articleId: Scalars['Int']['input'];
 };
@@ -2300,6 +2311,7 @@ export type GQLResolversTypes = {
   Article: ResolverTypeWrapper<GQLArticle>;
   ArticleMetaData: ResolverTypeWrapper<GQLArticleMetaData>;
   ArticleRequiredLibrary: ResolverTypeWrapper<GQLArticleRequiredLibrary>;
+  ArticleRevisionHistory: ResolverTypeWrapper<GQLArticleRevisionHistory>;
   ArticleSearchResult: ResolverTypeWrapper<GQLArticleSearchResult>;
   Audio: ResolverTypeWrapper<GQLAudio>;
   AudioFile: ResolverTypeWrapper<GQLAudioFile>;
@@ -2467,6 +2479,7 @@ export type GQLResolversParentTypes = {
   Article: GQLArticle;
   ArticleMetaData: GQLArticleMetaData;
   ArticleRequiredLibrary: GQLArticleRequiredLibrary;
+  ArticleRevisionHistory: GQLArticleRevisionHistory;
   ArticleSearchResult: GQLArticleSearchResult;
   Audio: GQLAudio;
   AudioFile: GQLAudioFile;
@@ -2691,6 +2704,10 @@ export type GQLArticleRequiredLibraryResolvers<ContextType = any, ParentType ext
   url?: Resolver<GQLResolversTypes['String'], ParentType, ContextType>;
 };
 
+export type GQLArticleRevisionHistoryResolvers<ContextType = any, ParentType extends GQLResolversParentTypes['ArticleRevisionHistory'] = GQLResolversParentTypes['ArticleRevisionHistory']> = {
+  revision?: Resolver<Array<GQLResolversTypes['Article']>, ParentType, ContextType>;
+};
+
 export type GQLArticleSearchResultResolvers<ContextType = any, ParentType extends GQLResolversParentTypes['ArticleSearchResult'] = GQLResolversParentTypes['ArticleSearchResult']> = {
   context?: Resolver<Maybe<GQLResolversTypes['SearchContext']>, ParentType, ContextType>;
   contexts?: Resolver<Array<GQLResolversTypes['SearchContext']>, ParentType, ContextType>;
@@ -3644,6 +3661,7 @@ export type GQLQueryResolvers<ContextType = any, ParentType extends GQLResolvers
   resourceEmbed?: Resolver<GQLResolversTypes['ResourceEmbed'], ParentType, ContextType, RequireFields<GQLQueryResourceEmbedArgs, 'id' | 'type'>>;
   resourceEmbeds?: Resolver<GQLResolversTypes['ResourceEmbed'], ParentType, ContextType, RequireFields<GQLQueryResourceEmbedsArgs, 'resources'>>;
   resourceTypes?: Resolver<Maybe<Array<GQLResolversTypes['ResourceTypeDefinition']>>, ParentType, ContextType>;
+  revisionHistory?: Resolver<Maybe<GQLResolversTypes['ArticleRevisionHistory']>, ParentType, ContextType, RequireFields<GQLQueryRevisionHistoryArgs, 'id'>>;
   revisions?: Resolver<Array<GQLResolversTypes['Int']>, ParentType, ContextType, RequireFields<GQLQueryRevisionsArgs, 'articleId'>>;
   search?: Resolver<Maybe<GQLResolversTypes['Search']>, ParentType, ContextType, Partial<GQLQuerySearchArgs>>;
   searchWithoutPagination?: Resolver<Maybe<GQLResolversTypes['SearchWithoutPagination']>, ParentType, ContextType, Partial<GQLQuerySearchWithoutPaginationArgs>>;
@@ -4001,6 +4019,7 @@ export type GQLResolvers<ContextType = any> = {
   Article?: GQLArticleResolvers<ContextType>;
   ArticleMetaData?: GQLArticleMetaDataResolvers<ContextType>;
   ArticleRequiredLibrary?: GQLArticleRequiredLibraryResolvers<ContextType>;
+  ArticleRevisionHistory?: GQLArticleRevisionHistoryResolvers<ContextType>;
   ArticleSearchResult?: GQLArticleSearchResultResolvers<ContextType>;
   Audio?: GQLAudioResolvers<ContextType>;
   AudioFile?: GQLAudioFileResolvers<ContextType>;
diff --git a/yarn.lock b/yarn.lock
index e6d466e2..74e5e03f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1781,10 +1781,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@ndla/types-backend@npm:^1.0.106":
-  version: 1.0.106
-  resolution: "@ndla/types-backend@npm:1.0.106"
-  checksum: 10c0/c951aa4743611e148e1a413f475bce1347cdc89585cdb6cc77c2d0fc4bb1f952c96642207039007e8d4d3a9a6c7f7582bddc16670a0ea03dbc4580578cb664f3
+"@ndla/types-backend@npm:^1.0.107":
+  version: 1.0.107
+  resolution: "@ndla/types-backend@npm:1.0.107"
+  checksum: 10c0/9c24f97311e319eef76d46d18127734228df7b42bffa531d024f1fe6fec72fa38394e1b9f890bcc82fa709b5d4d0ec12b8008ebb909b274935d991d6cfcbdb98
   languageName: node
   linkType: hard
 
@@ -6472,7 +6472,7 @@ __metadata:
     "@graphql-tools/mock": "npm:^9.1.5"
     "@graphql-tools/schema": "npm:^10.0.31"
     "@ndla/licenses": "npm:^9.0.3"
-    "@ndla/types-backend": "npm:^1.0.106"
+    "@ndla/types-backend": "npm:^1.0.107"
     "@ndla/types-embed": "npm:^5.0.21-alpha.0"
     "@ndla/types-taxonomy": "npm:^1.0.50"
     "@types/compression": "npm:^1.8.1"