refactor(pages): refine Thematic pages

* add a table of contents (however posts heading are
not included)
* rename posts list section title
* add a useThematic hook to refresh thematic contents
* add a useThematicLists hook to refresh thematics list
* add a `notIn` filter in thematics list fetcher to directly
remove unwanted thematics
* add Cypress tests

1 files changed, 50 insertions, 0 deletions

diff --git a/src/utils/hooks/use-thematics-list/use-thematics-list.ts b/src/utils/hooks/use-thematics-list/use-thematics-list.ts
new file mode 100644
index 0000000..f63815a
--- /dev/null
+++ b/src/utils/hooks/use-thematics-list/use-thematics-list.ts
@@ -0,0 +1,50 @@
+import useSWR from 'swr';
+import {
+  type FetchThematicsListInput,
+  fetchThematicsList,
+} from '../../../services/graphql';
+import type {
+  GraphQLConnection,
+  Maybe,
+  WPThematicPreview,
+} from '../../../types';
+
+export type UseThematicsListReturn<
+  T extends Maybe<GraphQLConnection<WPThematicPreview>>,
+> = {
+  isError: boolean;
+  isLoading: boolean;
+  isValidating: boolean;
+  thematics: T extends undefined
+    ? Maybe<GraphQLConnection<WPThematicPreview>>
+    : GraphQLConnection<WPThematicPreview>;
+};
+
+export type UseThematicsListConfig<
+  T extends Maybe<GraphQLConnection<WPThematicPreview>>,
+> = {
+  input?: FetchThematicsListInput;
+  fallback?: T;
+};
+
+export const useThematicsList = <
+  T extends Maybe<GraphQLConnection<WPThematicPreview>>,
+>(
+  config?: UseThematicsListConfig<T>
+): UseThematicsListReturn<T> => {
+  const { fallback, input } = config ?? {};
+  const { data, error, isLoading, isValidating } = useSWR(
+    input ?? {},
+    fetchThematicsList,
+    { fallbackData: fallback }
+  );
+
+  if (error) console.error(error);
+
+  return {
+    isError: !!error,
+    isLoading,
+    isValidating,
+    thematics: data,
+  } as UseThematicsListReturn<T>;
+};