Reintegrate GraphQL (#23)

* Use GraphQL for site metadata incl version

* Explicit props for passthrough components

1 files changed, 19 insertions, 0 deletions

diff --git a/src/hooks/SiteVersion.ts b/src/hooks/SiteVersion.ts
new file mode 100644
index 0000000..6726a3c
--- /dev/null
+++ b/src/hooks/SiteVersion.ts
@@ -0,0 +1,19 @@
+import { useStaticQuery, graphql } from "gatsby";
+
+type SiteVersion = NonNullable<
+  NonNullable<Queries.getSiteVersionQuery["site"]>["siteMetadata"]
+>["version"];
+
+export const useSiteVersion = (): SiteVersion => {
+  const { site } = useStaticQuery<Queries.getSiteVersionQuery>(graphql`
+    query getSiteVersion {
+      site {
+        siteMetadata {
+          version
+        }
+      }
+    }
+  `);
+
+  return site?.siteMetadata?.version ?? "0";
+};