1 files changed, 34 insertions, 0 deletions
diff --git a/src/services/graphql/thematics.ts b/src/services/graphql/thematics.ts
new file mode 100644
index 0000000..7003e08
--- /dev/null
+++ b/src/services/graphql/thematics.ts
@@ -0,0 +1,34 @@
+import { RawThematicPreview, TotalItems } from '@ts/types/raw-data';
+import { EdgesResponse, EdgesVars, fetchAPI, getAPIUrl } from './api';
+import { thematicsListQuery, totalThematicsQuery } from './thematics.query';
+
+/**
+ * Retrieve the total number of thematics.
+ *
+ * @returns {Promise<number>} - The thematics total number.
+ */
+export const getTotalThematics = async (): Promise<number> => {
+  const response = await fetchAPI<TotalItems, typeof totalThematicsQuery>({
+    api: getAPIUrl(),
+    query: totalThematicsQuery,
+  });
+
+  return response.thematics.pageInfo.total;
+};
+
+/**
+ * Retrieve the given number of thematics from API.
+ *
+ * @param {EdgesVars} props - An object of GraphQL variables.
+ * @returns {Promise<EdgesResponse<RawThematicPreview>>} The thematics data.
+ */
+export const getThematicsPreview = async (
+  props: EdgesVars
+): Promise<EdgesResponse<RawThematicPreview>> => {
+  const response = await fetchAPI<
+    RawThematicPreview,
+    typeof thematicsListQuery
+  >({ api: getAPIUrl(), query: thematicsListQuery, variables: props });
+
+  return response.thematics;
+};