feat(ios): extend swipe actions to milestones

crates/gitea/src/milestones.rs

@@ -208,18 +208,68 @@ impl Client {
             .map_err(Into::into)
     }
 
+    pub async fn set_milestone_closed(
+        &self,
+        repository: &RepositoryId,
+        id: i64,
+        closed: bool,
+    ) -> Result<models::Milestone> {
+        if id < 1 {
+            return Err(Error::InvalidInput(
+                "milestone id must be a positive integer".into(),
+            ));
+        }
+        self.edit_milestone(
+            repository,
+            &id.to_string(),
+            models::EditMilestoneOption {
+                state: Some(if closed { "closed" } else { "open" }.into()),
+                ..Default::default()
+            },
+        )
+        .await
+    }
+
     pub async fn delete_milestone(&self, repository: &RepositoryId, id: &str) -> Result<()> {
+        let id = id
+            .parse()
+            .map_err(|_| Error::InvalidInput("milestone id must be a positive integer".into()))?;
+        let milestone = self.milestone(repository, id).await?;
+        let title = milestone
+            .title
+            .ok_or_else(|| Error::Generated("The milestone has no title.".into()))?;
+        if !self
+            .issues(repository, &assigned_items_query(title))
+            .await?
+            .items
+            .is_empty()
+        {
+            return Err(Error::InvalidInput(
+                "Remove all assigned issues and pull requests before deleting this milestone."
+                    .into(),
+            ));
+        }
         apis::issue_api::issue_delete_milestone(
             &self.configuration(),
             &repository.owner,
             &repository.repository,
-            id,
+            &id.to_string(),
         )
         .await
         .map_err(Error::generated)
     }
 }
 
+fn assigned_items_query(title: String) -> IssueQuery {
+    IssueQuery {
+        state: "all".into(),
+        kind: "all".into(),
+        milestones: Some(title),
+        limit: 1,
+        ..Default::default()
+    }
+}
+
 #[derive(Serialize)]
 struct MilestoneRequest {
     title: String,
@@ -244,4 +294,13 @@ mod tests {
         assert!(value.get("due_on").unwrap().is_null());
         assert_eq!(value["state"], "closed");
     }
+
+    #[test]
+    fn assigned_item_check_includes_issues_and_pull_requests() {
+        let query = assigned_items_query("Release".into());
+        assert_eq!(query.state, "all");
+        assert_eq!(query.kind, "all");
+        assert_eq!(query.milestones.as_deref(), Some("Release"));
+        assert_eq!(query.limit, 1);
+    }
 }