feat: create date api and dynamo context

The DynamoClient context should be used across the entire application - there are some significant performance improvements when under real load.

src/lib.rs

@@ -2,7 +2,7 @@ pub mod app;
 mod common;
 mod components;
 mod pages;
-mod utils;
+pub mod utils;
 
 #[cfg(feature = "hydrate")]
 #[wasm_bindgen::prelude::wasm_bindgen]

src/main.rs

@@ -6,6 +6,11 @@ async fn main() {
     use leptos::prelude::*;
     use leptos_axum::{LeptosRoutes, generate_route_list};
     use scholarships_rs::app::*;
+    use scholarships_rs::utils::server::create_dynamo_client;
+    use std::sync::Arc;
+
+    let dynamo_client = create_dynamo_client().await;
+    let shared_client = Arc::new(dynamo_client);
     
     let conf = get_configuration(None).unwrap();
     let addr = conf.leptos_options.site_addr;
@@ -14,10 +19,20 @@ async fn main() {
     let routes = generate_route_list(App);
 
     let app = Router::new()
-        .leptos_routes(&leptos_options, routes, {
+        .leptos_routes_with_context(
+            &leptos_options,
+            routes,
+            {
+                let shared_client = Arc::clone(&shared_client);
+                move || {
+                    provide_context(Arc::clone(&shared_client));
+                }
+            },
+            {
                 let leptos_options = leptos_options.clone();
                 move || shell(leptos_options.clone())
-        })
+            }
+        )
         .fallback(leptos_axum::file_and_error_handler(shell))
         .with_state(leptos_options);
 

src/pages/api/dates.rs

@@ -0,0 +1,75 @@
+use std::collections::HashMap;
+use leptos::logging::log;
+use leptos::prelude::*;
+use crate::common::DateInfo;
+
+#[cfg(feature = "ssr")]
+static DATES_TABLE: &str = "leptos-dates";
+
+#[cfg(feature = "ssr")]
+use aws_sdk_dynamodb::{
+    types::{WriteRequest, PutRequest},
+    Client as DynamoClient
+};
+
+#[cfg(feature = "ssr")]
+use std::sync::Arc;
+
+#[server]
+pub async fn create_dates(dates: Vec<DateInfo>) -> Result<(), ServerFnError> {
+    // Serialize and put dates into the database.
+    let client = expect_context::<Arc<DynamoClient>>();
+    
+    log!("Creating dates: {:?}", dates);
+    
+    let requests = dates
+        .into_iter()
+        .map(|date| {
+            let item = serde_dynamo::to_item(&date)
+                .unwrap_or_default();
+            
+            let put_request = PutRequest::builder()
+                .set_item(Some(item))
+                .build()
+                .expect("Couldn't build request, item is not present");
+            
+            WriteRequest::builder().put_request(put_request).build()
+        })
+        .collect::<Vec<WriteRequest>>();
+    
+    let mut request_map = HashMap::new();
+    request_map.insert(DATES_TABLE.to_string(), requests);
+    
+    client
+        .batch_write_item()
+        .set_request_items(Some(request_map))
+        .send()
+        .await
+        .map(|_| ())
+        .map_err(ServerFnError::from)
+}
+
+#[server]
+pub async fn get_important_dates() -> Result<Vec<DateInfo>, ServerFnError> {
+    let client = expect_context::<Arc<DynamoClient>>();
+    
+    client
+        .scan()
+        .table_name(DATES_TABLE)
+        .send()
+        .await
+        .map(|output| {
+            if let Some(items) = output.items {
+                items
+                    .into_iter()
+                    .filter_map(|item| {
+                        serde_dynamo::from_item::<_, DateInfo>(item)
+                            .ok()
+                    })
+                    .collect::<Vec<DateInfo>>()
+            } else {
+                Vec::new()
+            }
+        })
+        .map_err(ServerFnError::from)
+}