implement recent bookmarks menu item

src/profile/bookmark.rs

@@ -11,8 +11,8 @@ use sqlite::{Connection, Transaction};
 use std::{rc::Rc, sync::RwLock};
 
 pub struct Bookmark {
-    database: Rc<Database>, // permanent storage
-    memory: Rc<Memory>,     // fast search index
+    pub database: Rc<Database>, // permanent storage
+    pub memory: Rc<Memory>,     // fast search index
 }
 
 impl Bookmark {

src/profile/bookmark/memory.rs

@@ -1,6 +1,7 @@
 mod error;
 use error::Error;
 
+use itertools::Itertools;
 use std::{cell::RefCell, collections::HashMap};
 
 /// Reduce disk usage by cache Bookmarks index in memory
@@ -54,4 +55,24 @@ impl Memory {
             None => Err(Error::Unexpected), // @TODO
         }
     }
+
+    /// Get recent requests vector sorted DESC by `ID`
+    pub fn recent(&self, limit: usize) -> Vec<String> {
+        let mut recent: Vec<String> = Vec::new();
+        for (request, _) in self
+            .index
+            .borrow()
+            .iter()
+            .sorted_by(|a, b| Ord::cmp(&b.1, &a.1))
+            .take(limit)
+        {
+            recent.push(request.to_string())
+        }
+        recent
+    }
+
+    /// Get total records in memory pool
+    pub fn total(&self) -> usize {
+        self.index.borrow().len()
+    }
 }