Introduce a save state message

web/src/api.rs

@@ -58,11 +58,10 @@ fn filter_recipes(
 }
 
 pub async fn init_app_state<'ctx>(
-    cx: Scope<'ctx>,
+    store: &HttpStore,
     h: &'ctx Handler<'ctx, StateMachine, AppState, Message>,
 ) {
     info!("Synchronizing Recipes");
-    let store = HttpStore::get_from_context(cx);
     // TODO(jwall): Make our caching logic using storage more robust.
     let recipe_entries = match store.get_recipes().await {
         Ok(recipe_entries) => {
@@ -270,7 +269,7 @@ pub struct HttpStore {
 }
 
 impl HttpStore {
-    fn new(root: String) -> Self {
+    pub fn new(root: String) -> Self {
         Self { root }
     }
 
@@ -493,6 +492,27 @@ impl HttpStore {
         }
     }
 
+    #[instrument(skip_all)]
+    pub async fn save_app_state(&self, state: AppState) -> Result<(), Error> {
+        let mut plan = Vec::new();
+        for (key, count) in state.recipe_counts.iter() {
+            plan.push((key.clone(), *count as i32));
+        }
+        debug!("Saving plan data");
+        self.save_plan(plan).await?;
+        debug!("Saving inventory data");
+        self.save_inventory_data(
+            state.filtered_ingredients,
+            state.modified_amts,
+            state
+                .extras
+                .iter()
+                .cloned()
+                .collect::<Vec<(String, String)>>(),
+        )
+        .await
+    }
+
     #[instrument]
     pub async fn save_state(&self, state: std::rc::Rc<app_state::State>) -> Result<(), Error> {
         let mut plan = Vec::new();

web/src/app_state.rs

@@ -13,14 +13,16 @@
 // limitations under the License.
 use std::collections::{BTreeMap, BTreeSet};
 
-use sycamore::prelude::*;
-use tracing::{debug, instrument, warn};
+use sycamore::{futures::spawn_local, prelude::*};
+use tracing::{debug, error, instrument, warn};
 
 use client_api::UserData;
 use recipes::{Ingredient, IngredientAccumulator, IngredientKey, Recipe};
 
 use sycamore_state::{Handler, MessageMapper};
 
+use crate::api::HttpStore;
+
 #[derive(Debug, Clone, PartialEq)]
 pub struct AppState {
     pub recipe_counts: BTreeMap<String, usize>,
@@ -48,6 +50,7 @@ impl AppState {
     }
 }
 
+#[derive(Debug)]
 pub enum Message {
     InitRecipeCounts(BTreeMap<String, usize>),
     UpdateRecipeCount(String, usize),
@@ -66,12 +69,13 @@ pub enum Message {
     UpdateAmt(IngredientKey, String),
     SetUserData(UserData),
     UnsetUserData,
+    SaveState,
 }
 
-// TODO(jwall): Add HttpStore here and do the proper things for each event.
-pub struct StateMachine();
+pub struct StateMachine(HttpStore);
 
 impl MessageMapper<Message, AppState> for StateMachine {
+    #[instrument(skip_all, fields(?msg))]
     fn map(&self, msg: Message, original: &ReadSignal<AppState>) -> AppState {
         let mut original_copy = original.get().as_ref().clone();
         match msg {
@@ -126,6 +130,15 @@ impl MessageMapper<Message, AppState> for StateMachine {
             Message::UnsetUserData => {
                 original_copy.auth = None;
             }
+            Message::SaveState => {
+                let store = self.0.clone();
+                let original_copy = original_copy.clone();
+                spawn_local(async move {
+                    if let Err(e) = store.save_app_state(original_copy).await {
+                        error!(err=?e, "Error saving app state")
+                    };
+                });
+            }
         }
         original_copy
     }
@@ -133,9 +146,14 @@ impl MessageMapper<Message, AppState> for StateMachine {
 
 pub type StateHandler<'ctx> = &'ctx Handler<'ctx, StateMachine, AppState, Message>;
 
-pub fn get_state_handler<'ctx>(cx: Scope<'ctx>, initial: AppState) -> StateHandler<'ctx> {
-    Handler::new(cx, initial, StateMachine())
+pub fn get_state_handler<'ctx>(
+    cx: Scope<'ctx>,
+    initial: AppState,
+    store: HttpStore,
+) -> StateHandler<'ctx> {
+    Handler::new(cx, initial, StateMachine(store))
 }
+
 #[derive(Debug)]
 pub struct State {
     pub recipe_counts: RcSignal<BTreeMap<String, RcSignal<usize>>>,

web/src/components/recipe_plan.rs

@@ -13,21 +13,20 @@
 // limitations under the License.
 use recipes::Recipe;
 use sycamore::{futures::spawn_local_scoped, prelude::*};
-use tracing::{error, instrument};
+use tracing::instrument;
 
+use crate::app_state::{Message, StateHandler};
 use crate::components::recipe_selection::*;
 use crate::{api::*, app_state};
 
 #[allow(non_snake_case)]
-#[instrument]
-pub fn RecipePlan<G: Html>(cx: Scope) -> View<G> {
-    let rows = create_memo(cx, move || {
-        let state = app_state::State::get_from_context(cx);
+#[instrument(skip_all)]
+pub fn RecipePlan<'ctx, G: Html>(cx: Scope<'ctx>, sh: StateHandler<'ctx>) -> View<G> {
+    let rows = sh.get_selector(cx, move |state| {
         let mut rows = Vec::new();
         for row in state
-            .recipes
             .get()
-            .as_ref()
+            .recipes
             .iter()
             .map(|(k, v)| create_signal(cx, (k.clone(), v.clone())))
             .collect::<Vec<&Signal<(String, Recipe)>>>()
@@ -39,27 +38,15 @@ pub fn RecipePlan<G: Html>(cx: Scope) -> View<G> {
     });
     let refresh_click = create_signal(cx, false);
     let save_click = create_signal(cx, false);
+    // FIXME(jwall): We should probably make this a dispatch method instead.
     create_effect(cx, move || {
         refresh_click.track();
         let store = HttpStore::get_from_context(cx);
-        let state = app_state::State::get_from_context(cx);
-        spawn_local_scoped(cx, {
-            async move {
-                if let Err(err) = init_page_state(store.as_ref(), state.as_ref()).await {
-                    error!(?err);
-                };
-            }
-        });
+        spawn_local_scoped(cx, async move { init_app_state(store.as_ref(), sh).await });
     });
     create_effect(cx, move || {
         save_click.track();
-        let store = HttpStore::get_from_context(cx);
-        let state = app_state::State::get_from_context(cx);
-        spawn_local_scoped(cx, {
-            async move {
-                store.save_state(state).await.expect("Failed to save plan");
-            }
-        })
+        sh.dispatch(Message::SaveState);
     });
     view! {cx,
         table(class="recipe_selector no-print") {

web/src/pages/planning/plan.rs

@@ -21,6 +21,6 @@ pub fn PlanPage<'ctx, G: Html>(cx: Scope<'ctx>, sh: StateHandler<'ctx>) -> View<
     view! {cx,
         PlanningPage(
             selected=Some("Plan".to_owned()),
-        ) { RecipePlan() }
+        ) { RecipePlan(sh) }
     }
 }

web/src/web.rs

@@ -21,15 +21,18 @@ use crate::{api, routing::Handler as RouteHandler};
 #[component]
 pub fn UI<G: Html>(cx: Scope) -> View<G> {
     api::HttpStore::provide_context(cx, "/api".to_owned());
+    // FIXME(jwall): We shouldn't need to get the store from a context anymore.
+    let store = api::HttpStore::get_from_context(cx).as_ref().clone();
     info!("Starting UI");
     let app_state = crate::app_state::AppState::new();
-    let handler = crate::app_state::get_state_handler(cx, app_state);
+    let handler = crate::app_state::get_state_handler(cx, app_state, store);
     let view = create_signal(cx, View::empty());
     // FIXME(jwall): We need a way to trigger refreshes when required. Turn this
     // into a create_effect with a refresh signal stored as a context.
     spawn_local_scoped(cx, {
+        let store = api::HttpStore::get_from_context(cx);
         async move {
-            api::init_app_state(cx, handler).await;
+            api::init_app_state(store.as_ref(), handler).await;
             // TODO(jwall): This needs to be moved into the RouteHandler
             view.set(view! { cx,
                 div(class="app") {