record meals that were added to list, allow delete with ingredients

src/services.rs

@@ -1,10 +1,10 @@
 use std::sync::Arc;
 
 use crate::domain::{
-    DomainError, DomainResult, GroceryList, Item, Meal, MealCategory, SessionUser, User,
+    DomainError, DomainResult, GroceryList, Item, ListMeal, Meal, MealCategory, SessionUser, User,
 };
 use crate::ports::{
-    CategoryRepository, InvitationRepository, ItemRepository, ListRepository,
+    CategoryRepository, InvitationRepository, ItemRepository, ListMealRepository, ListRepository,
     MealCategoryRepository, MealIngredientRepository, MealRepository, NewItem, PasswordHasher,
     RealtimeNotifier, SessionRepository, TokenGenerator, UserRepository,
 };
@@ -318,6 +318,7 @@ pub struct MealService {
     meal_categories: Arc<dyn MealCategoryRepository>,
     lists: Arc<dyn ListRepository>,
     items: Arc<dyn ItemRepository>,
+    list_meals: Arc<dyn ListMealRepository>,
     realtime: Arc<dyn RealtimeNotifier>,
 }
 
@@ -329,6 +330,7 @@ impl MealService {
         meal_categories: Arc<dyn MealCategoryRepository>,
         lists: Arc<dyn ListRepository>,
         items: Arc<dyn ItemRepository>,
+        list_meals: Arc<dyn ListMealRepository>,
         realtime: Arc<dyn RealtimeNotifier>,
     ) -> Self {
         Self {
@@ -338,6 +340,7 @@ impl MealService {
             meal_categories,
             lists,
             items,
+            list_meals,
             realtime,
         }
     }
@@ -488,11 +491,12 @@ impl MealService {
     }
 
     /// Expands a meal's ingredients into items on a list in one unit of work,
-    /// bumping the list revision exactly once.
+    /// recording the meal on the list and bumping the list revision exactly once.
     pub async fn add_meal_to_list(&self, meal_id: i64, list_id: i64) -> DomainResult<i64> {
         let meals = Arc::clone(&self.meals);
         let lists = Arc::clone(&self.lists);
         let items = Arc::clone(&self.items);
+        let list_meals = Arc::clone(&self.list_meals);
         let revision = self
             .db
             .run(move |txn| {
@@ -504,6 +508,9 @@ impl MealService {
                     if lists.get_list(txn, list_id).await?.is_none() {
                         return Err(DomainError::NotFound);
                     }
+                    let list_meal_id = list_meals
+                        .add_meal(txn, list_id, meal.id, meal.name.clone())
+                        .await?;
                     let new_items = meal
                         .ingredients
                         .into_iter()
@@ -512,6 +519,7 @@ impl MealService {
                             quantity: ingredient.quantity,
                             note: ingredient.note,
                             category_id: ingredient.category_id,
+                            list_meal_id: Some(list_meal_id),
                         })
                         .collect();
                     items.add_items_bulk(txn, list_id, new_items).await
@@ -521,6 +529,32 @@ impl MealService {
         self.realtime.publish_list_changed(list_id, revision).await;
         Ok(revision)
     }
+
+    /// Lists the meals that have been added to a list, most recent first.
+    pub async fn list_meals_on_list(&self, list_id: i64) -> DomainResult<Vec<ListMeal>> {
+        let list_meals = Arc::clone(&self.list_meals);
+        self.db
+            .run(move |txn| Box::pin(async move { list_meals.list_meals(txn, list_id).await }))
+            .await
+    }
+
+    /// Removes a meal instance from a list, deleting the items that came from it
+    /// and bumping the list revision exactly once.
+    pub async fn remove_meal_from_list(
+        &self,
+        list_id: i64,
+        list_meal_id: i64,
+    ) -> DomainResult<i64> {
+        let list_meals = Arc::clone(&self.list_meals);
+        let revision = self
+            .db
+            .run(move |txn| {
+                Box::pin(async move { list_meals.remove_meal(txn, list_id, list_meal_id).await })
+            })
+            .await?;
+        self.realtime.publish_list_changed(list_id, revision).await;
+        Ok(revision)
+    }
 }
 
 pub struct InvitationService {