From 790559896fe03d5c61a8594d7887394ca290d802 Mon Sep 17 00:00:00 2001
From: lkasso <laura@kassovic.com>
Date: Sun, 19 Jul 2026 20:55:20 -0700
Subject: [PATCH] Swipe-to-delete for saved sessions in Session History
MIME-Version: 1.0
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Owner request. Standard trailing swipe with a destructive Delete on
every session row — removal is optimistic for instant UI, the store
delete cascades the samples, and a failed delete resurrects the row
via reload plus an alert (a row must never vanish while its data
survives). Also surfaces loadError, which was recorded but never
presented.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 .../Sessions/SessionHistoryView.swift         | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/Apps/MetaWear/MetaWear/Features/Sessions/SessionHistoryView.swift b/Apps/MetaWear/MetaWear/Features/Sessions/SessionHistoryView.swift
index f2f774a..3cf2b18 100644
--- a/Apps/MetaWear/MetaWear/Features/Sessions/SessionHistoryView.swift
+++ b/Apps/MetaWear/MetaWear/Features/Sessions/SessionHistoryView.swift
@@ -26,6 +26,11 @@ struct SessionHistoryView: View {
                                     .foregroundStyle(.secondary)
                             }
                         }
+                        .swipeActions(edge: .trailing) {
+                            Button("Delete", systemImage: "trash", role: .destructive) {
+                                Task { await delete(snap) }
+                            }
+                        }
                     }
                 }
             }
@@ -42,6 +47,11 @@ struct SessionHistoryView: View {
         .refreshable {
             await reload()
         }
+        .alert(item: $loadError) { err in
+            Alert(title: Text("Session History"),
+                  message: Text(err.message),
+                  dismissButton: .default(Text("OK")))
+        }
     }
 
     /// Serial → MAC translation from the remembered-device records (which
@@ -66,6 +76,20 @@ struct SessionHistoryView: View {
             loadError = AppError(error: error)
         }
     }
+
+    /// Standard swipe-to-delete: remove optimistically for instant UI,
+    /// then delete from the store (samples cascade). On failure the reload
+    /// resurrects the row and the alert explains — the row must never
+    /// vanish while the data survives.
+    private func delete(_ snapshot: MWSessionSnapshot) async {
+        snapshots.removeAll { $0.id == snapshot.id }
+        do {
+            try await appStore.persistence.deleteSession(id: snapshot.id)
+        } catch {
+            loadError = AppError(error: error)
+            await reload()
+        }
+    }
 }
 
 // MARK: - Grouping