refactor: http-axum split into api/html/federation modules, router.rs, templates per page group

crates/adapters/http-axum/src/html/templates/common.rs

@@ -0,0 +1,36 @@
+pub struct PageItem {
+    pub number: u32,
+    pub is_current: bool,
+    pub is_ellipsis: bool,
+}
+
+pub fn build_page_items(total_pages: u32, current_page: u32) -> Vec<PageItem> {
+    if total_pages <= 1 {
+        return vec![];
+    }
+    let mut set = std::collections::BTreeSet::new();
+    set.insert(0u32);
+    set.insert(total_pages - 1);
+    let start = current_page.saturating_sub(2);
+    let end = (current_page + 2).min(total_pages - 1);
+    for p in start..=end {
+        set.insert(p);
+    }
+    let pages: Vec<u32> = set.into_iter().collect();
+    let mut items = Vec::new();
+    for (i, &p) in pages.iter().enumerate() {
+        if i > 0 && p > pages[i - 1] + 1 {
+            items.push(PageItem {
+                number: 0,
+                is_current: false,
+                is_ellipsis: true,
+            });
+        }
+        items.push(PageItem {
+            number: p,
+            is_current: p == current_page,
+            is_ellipsis: false,
+        });
+    }
+    items
+}