Add configurable iPhone widgets

crates/app/src/core/widgets.rs

@@ -0,0 +1,55 @@
+use crate::*;
+
+const MAX_WIDGET_ROWS: u32 = 10;
+
+#[uniffi::export(async_runtime = "tokio")]
+impl GotchaCore {
+    pub async fn widget_activity(
+        &self,
+        server_id: String,
+        limit: u32,
+    ) -> Result<WidgetActivityPage, GotchaError> {
+        let server = self.server_by_id(&server_id)?;
+        let mut rows = activity_rows(&load_activities(&server, 1).await?.items);
+        rows.truncate(widget_limit(limit)?);
+        Ok(WidgetActivityPage {
+            server_name: server.name,
+            rows,
+        })
+    }
+
+    pub async fn widget_pulls(
+        &self,
+        server_id: String,
+        limit: u32,
+    ) -> Result<WidgetPullPage, GotchaError> {
+        let server = self.server_by_id(&server_id)?;
+        let pulls = load_pulls(&server, "open", "", "", 1).await?;
+        let mut rows = pull_rows(&pulls.items);
+        rows.truncate(widget_limit(limit)?);
+        Ok(WidgetPullPage {
+            server_name: server.name,
+            rows,
+        })
+    }
+}
+
+fn widget_limit(limit: u32) -> Result<usize, GotchaError> {
+    (1..=MAX_WIDGET_ROWS)
+        .contains(&limit)
+        .then_some(limit as usize)
+        .ok_or_else(|| "Widget row count must be between 1 and 10.".into())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn validates_widget_row_limits() {
+        assert_eq!(widget_limit(1).unwrap(), 1);
+        assert_eq!(widget_limit(10).unwrap(), 10);
+        assert!(widget_limit(0).is_err());
+        assert!(widget_limit(11).is_err());
+    }
+}