caching

src/util/cache.rs

@@ -0,0 +1,34 @@
+use std::time::SystemTime;
+
+use std::sync::{Arc, Mutex};
+use crate::videos::Video_Item;
+
+#[derive(Clone)]
+pub struct VideoCache{
+    cache: Arc<Mutex<std::collections::HashMap<String, (SystemTime, Vec<Video_Item>)>>>,    // url -> time+Items
+}
+impl VideoCache {
+    pub fn new() -> Self {
+        VideoCache {
+            cache: Arc::new(Mutex::new(std::collections::HashMap::new())),
+        }
+    }
+
+    pub fn get(&self, key: &str) -> Option<(SystemTime, Vec<Video_Item>)> {
+        let cache = self.cache.lock().ok()?;
+        cache.get(key).cloned()
+    }
+
+    pub fn insert(&self, key: String, value: Vec<Video_Item>) {
+        if let Ok(mut cache) = self.cache.lock() {
+            cache.insert(key.clone(), (SystemTime::now(), value.clone()));
+        }
+    }
+
+    pub fn remove(&self, key: &str) {
+        if let Ok(mut cache) = self.cache.lock() {
+            cache.remove(key);
+        }
+    }
+    
+}