feat(scan): optionally open a bag when scanning coffee

Add "Open a bag of this coffee" checkbox (default: checked) to the
scan form with a configurable amount field (default: 250g). When
enabled, creates a bag and timeline event alongside the roaster/roast.

src/application/routes/scan.rs

@@ -9,9 +9,11 @@ use crate::application::errors::{ApiError, AppError};
 use crate::application::routes::roasts::TastingNotesInput;
 use crate::application::routes::support::{FlexiblePayload, is_datastar_request};
 use crate::application::server::AppState;
+use crate::domain::bags::NewBag;
 use crate::domain::errors::RepositoryError;
 use crate::domain::roasters::NewRoaster;
 use crate::domain::roasts::NewRoast;
+use crate::domain::timeline::{NewTimelineEvent, TimelineEventDetail};
 use crate::infrastructure::ai::{self, ExtractionInput};
 
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
@@ -115,6 +117,10 @@ pub(crate) struct BagScanSubmission {
     process: String,
     #[serde(default = "default_tasting_notes")]
     tasting_notes: TastingNotesInput,
+    #[serde(default)]
+    open_bag: Option<String>,
+    #[serde(default)]
+    bag_amount: Option<f64>,
 }
 
 #[derive(Debug, Serialize)]
@@ -175,6 +181,7 @@ async fn extract_into_submission(
     Ok(())
 }
 
+#[allow(clippy::too_many_lines)]
 #[tracing::instrument(skip(state, _auth_user, headers, payload))]
 pub(crate) async fn submit_scan(
     State(state): State<AppState>,
@@ -262,6 +269,48 @@ pub(crate) async fn submit_scan(
         .await
         .map_err(AppError::from)?;
 
+    // Optionally create a bag
+    let wants_bag = submission
+        .open_bag
+        .as_deref()
+        .is_some_and(|v| v == "true" || v == "on");
+    if wants_bag {
+        let amount = submission.bag_amount.unwrap_or(250.0);
+        let new_bag = NewBag {
+            roast_id: roast.id,
+            roast_date: None,
+            amount,
+        };
+        let bag = state
+            .bag_repo
+            .insert(new_bag)
+            .await
+            .map_err(AppError::from)?;
+
+        let event = NewTimelineEvent {
+            entity_type: "bag".to_string(),
+            entity_id: bag.id.into_inner(),
+            action: "added".to_string(),
+            occurred_at: chrono::Utc::now(),
+            title: roast.name.clone(),
+            details: vec![
+                TimelineEventDetail {
+                    label: "Roaster".to_string(),
+                    value: roaster.name.clone(),
+                },
+                TimelineEventDetail {
+                    label: "Amount".to_string(),
+                    value: format!("{}g", bag.amount),
+                },
+            ],
+            tasting_notes: vec![],
+            slug: Some(roast.slug.clone()),
+            roaster_slug: Some(roaster.slug.clone()),
+            brew_data: None,
+        };
+        let _ = state.timeline_repo.insert(event).await;
+    }
+
     let redirect = format!("/roasters/{}/roasts/{}", roaster.slug, roast.slug);
     let roast_id = roast.id.into_inner();
 

templates/home.html

@@ -46,6 +46,8 @@
   data-signals:_producer="''"
   data-signals:_process="''"
   data-signals:_tasting-notes="''"
+  data-signals:_open-bag="true"
+  data-signals:_bag-amount="250"
 >
   <h2 class="text-lg font-semibold text-amber-700 mb-3">Scan Bag</h2>
 
@@ -89,7 +91,7 @@
     <form
       class="rounded-lg border border-amber-300 bg-amber-100/80 p-5 shadow-sm flex flex-col gap-6"
       data-on:submit="$_scanSubmitting = true; $_scanError = ''; @post('/api/v1/scan', {contentType: 'form'})"
-      data-on:datastar-fetch="if (!$_scanSubmitting) return; if (evt.detail.type === 'finished') { $_scanSubmitting = false; $_scanExtracted = false; $_roasterName = ''; $_roasterCountry = ''; $_roasterCity = ''; $_roasterHomepage = ''; $_roastName = ''; $_origin = ''; $_region = ''; $_producer = ''; $_process = ''; $_tastingNotes = ''; window.location.reload() } else if (evt.detail.type === 'error') { $_scanSubmitting = false; $_scanError = 'Save failed. Please try again.' }"
+      data-on:datastar-fetch="if (!$_scanSubmitting) return; if (evt.detail.type === 'finished') { $_scanSubmitting = false; $_scanExtracted = false; $_roasterName = ''; $_roasterCountry = ''; $_roasterCity = ''; $_roasterHomepage = ''; $_roastName = ''; $_origin = ''; $_region = ''; $_producer = ''; $_process = ''; $_tastingNotes = ''; $_openBag = true; $_bagAmount = 250; window.location.reload() } else if (evt.detail.type === 'error') { $_scanSubmitting = false; $_scanError = 'Save failed. Please try again.' }"
     >
       <div>
         <h3 class="text-base font-semibold text-amber-700">Roaster</h3>
@@ -143,6 +145,18 @@
           </label>
         </div>
       </div>
+      <div>
+        <label class="inline-flex items-center gap-2 text-sm cursor-pointer">
+          <input type="checkbox" name="open_bag" value="true" class="accent-amber-600" data-bind:_open-bag />
+          <span class="font-semibold text-amber-700">Open a bag of this coffee</span>
+        </label>
+        <div data-show="$_openBag" class="mt-3 grid gap-4 sm:grid-cols-2">
+          <label class="flex flex-col gap-1 text-sm">
+            <span class="text-stone-700">Amount (grams)</span>
+            <input type="number" name="bag_amount" min="1" step="any" class="input-field" placeholder="250" data-bind:_bag-amount />
+          </label>
+        </div>
+      </div>
       <p data-show="$_scanError" data-text="$_scanError" style="display:none" class="text-sm text-red-600"></p>
       <div data-show="$_scanSubmitting" style="display:none" class="flex items-center gap-3 text-sm text-amber-700">
         {% call icons::spinner("h-5 w-5") %}