Rewrite to rust

src/views/pagination.rs

@@ -0,0 +1,49 @@
+use serde::{Deserialize, Serialize};
+
+
+#[derive(Deserialize)]
+pub struct Pagination {
+    #[serde(default = "default_page")]
+    pub page: usize,
+    #[serde(default = "default_size")]
+    pub size: usize
+}
+
+fn default_page() -> usize { 1 }
+fn default_size() -> usize { 50 }
+
+impl Pagination {
+    pub fn skip(&self) -> i64 {
+        ((self.page - 1) * self.size).try_into().unwrap()
+    }
+
+    pub fn take(&self) -> i64 {
+        self.size.try_into().unwrap()
+    }
+}
+
+
+#[derive(Serialize)]
+pub struct Page<T> where T: Serialize {
+    pub items: Vec<T>,
+    pub total: usize,
+    pub page: usize,
+    pub size: usize,
+    pub pages: usize
+}
+
+impl<T> Page<T> where T: Serialize {
+    pub fn create(
+        items: Vec<T>,
+        items_count: i64,
+        pagination: Pagination
+    ) -> Self {
+        Self {
+            items,
+            total: items_count.try_into().unwrap(),
+            page: pagination.page,
+            size: pagination.size,
+            pages: (items_count as f64 / pagination.size as f64).ceil() as usize
+        }
+    }
+}