Update routes.rs

Author: murphsicles

src/graphql/routes.rs

@@ -3,13 +3,17 @@ use async_graphql_actix_web::{GraphQLRequest, GraphQLResponse};
 use async_graphql::http::{playground_source, GraphQLPlaygroundConfig};
 use super::AppState;
 
+// Handles POST /graphql requests for executing GraphQL queries and mutations
 #[post("/graphql")]
 pub async fn graphql(state: web::Data<AppState>, request: GraphQLRequest) -> GraphQLResponse {
+    // Execute the GraphQL request using the schema stored in the application state
     state.schema.execute(request.into_inner()).await.into()
 }
 
+// Handles GET /graphql requests to serve the GraphiQL UI
 #[get("/graphql")]
 pub async fn graphiql() -> HttpResponse {
+    // Return an HTML response with the GraphiQL interface, configured to query the /graphql endpoint
     HttpResponse::Ok()
         .content_type("text/html; charset=utf-8")
         .body(playground_source(GraphQLPlaygroundConfig::new("/graphql")))