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watch/WristCode/Views/Loading.swift

@@ -0,0 +1,53 @@
+// How every screen that loads data shows it: a static "Loading" before the first answer, the error
+// and Try again when there is nothing to show, and once content is on screen, a small dim line under
+// it when a refresh fails. Content is never replaced by an error.
+
+import SwiftUI
+
+/// The placeholder before a screen's first answer, the same as the feed's. Static, with no spinner.
+struct LoadingText: View {
+    var body: some View {
+        Text("Loading")
+            .font(.system(size: 15, weight: .semibold))
+            .foregroundStyle(Theme.secondaryText)
+            .frame(maxWidth: .infinity, alignment: .leading)
+            .padding(.horizontal, 8)
+            .padding(.top, 4)
+    }
+}
+
+/// What a screen shows under its content about loading. `loaded` is true once content is on screen.
+/// Before then: Loading, or the error with Try again when `retry` is set. After: only a failed
+/// refresh's error, small and dim.
+struct LoadStatus: View {
+    var loaded: Bool
+    var error: String?
+    var retry: (() async -> Void)?
+
+    var body: some View {
+        if let error {
+            if loaded {
+                Text(error)
+                    .font(.system(size: 11))
+                    .foregroundStyle(Theme.done)
+                    .lineLimit(3)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+                    .padding(.horizontal, 8)
+            } else {
+                VStack(alignment: .leading, spacing: 8) {
+                    Text(error)
+                        .font(.system(size: 12))
+                        .foregroundStyle(Theme.secondaryText)
+                        .padding(.horizontal, 8)
+                    if let retry {
+                        Button("Try again") { Task { await retry() } }
+                            .buttonStyle(PillButtonStyle(fill: Theme.control, foreground: .white))
+                    }
+                }
+                .frame(maxWidth: .infinity, alignment: .leading)
+            }
+        } else if !loaded {
+            LoadingText()
+        }
+    }
+}