Can request consumption history

central_backend/src/energy/consumption_history_file.rs

@@ -97,6 +97,30 @@ impl ConsumptionHistoryFile {
         )?;
         Ok(())
     }
+
+    /// Get the total runtime of a relay during a given time window
+    pub fn get_history(
+        r#type: ConsumptionHistoryType,
+        from: u64,
+        to: u64,
+        interval: u64,
+    ) -> anyhow::Result<Vec<EnergyConsumption>> {
+        let mut res = Vec::with_capacity(((to - from) / interval) as usize);
+        let mut file = Self::open(from, r#type)?;
+        let mut curr_time = from;
+
+        while curr_time < to {
+            if !file.contains_time(curr_time) {
+                file = Self::open(curr_time, r#type)?;
+            }
+
+            res.push(file.get_consumption(curr_time)?);
+
+            curr_time += interval;
+        }
+
+        Ok(res)
+    }
 }
 
 #[cfg(test)]