1 files changed, 34 insertions, 0 deletions
diff --git a/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.ts b/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.ts
new file mode 100644
index 0000000..eab4a7c
--- /dev/null
+++ b/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.ts
@@ -0,0 +1,34 @@
+import type { GraphQLNodes, Nullable, SlugNode } from '../../../../types';
+import { fetchGraphQL, getGraphQLUrl } from '../../../../utils/helpers';
+import { fetchTopicsCount } from './fetch-topics-count';
+
+type TopicsSlugsResponse = {
+  topics: Nullable<GraphQLNodes<SlugNode>>;
+};
+
+const topicsSlugsQuery = `query TopicsSlugs($first: Int) {
+  topics(first: $first) {
+    nodes {
+      slug
+    }
+  }
+}`;
+
+/**
+ * Retrieve the WordPress topics slugs.
+ *
+ * @returns {Promise<string[]>} The topics slugs.
+ */
+export const fetchAllTopicsSlugs = async (): Promise<string[]> => {
+  const topicsCount = await fetchTopicsCount();
+  const response = await fetchGraphQL<TopicsSlugsResponse>({
+    query: topicsSlugsQuery,
+    url: getGraphQLUrl(),
+    variables: { first: topicsCount },
+  });
+
+  if (!response.topics)
+    return Promise.reject(new Error('Unable to find the topics slugs.'));
+
+  return response.topics.nodes.map((node) => node.slug);
+};