web: add non-functional graphql.

web/src/graphql.rs

@@ -0,0 +1,35 @@
+use graphql_client::GraphQLQuery;
+use seed::{
+    fetch,
+    fetch::{Header, Method, Request},
+};
+use serde::{de::DeserializeOwned, Deserialize, Serialize};
+
+// The paths are relative to the directory where your `Cargo.toml` is located.
+// Both json and the GraphQL schema language are supported as sources for the schema
+#[derive(GraphQLQuery)]
+#[graphql(
+    schema_path = "graphql/schema.json",
+    query_path = "graphql/front_page.graphql",
+    response_derives = "Debug"
+)]
+pub struct FrontPageQuery;
+
+async fn send_graphql<Body, Resp>(body: Body) -> fetch::Result<graphql_client::Response<Resp>>
+where
+    Body: Serialize,
+    Resp: DeserializeOwned + 'static,
+{
+    use web_sys::RequestMode;
+
+    Request::new("/graphql")
+        .method(Method::Post)
+        .header(Header::content_type("application/json"))
+        .mode(RequestMode::Cors)
+        .json(&body)?
+        .fetch()
+        .await?
+        .check_status()?
+        .json()
+        .await
+}