Use correct db for reading

src/data.rs

@@ -189,7 +189,7 @@ mod test {
 
         price_list.push(("tibber hourly (optimal)", tibber_hourly_prices_optimal));
 
-        let db = DataBase::new("data.db").await?;
+        let db = DataBase::new("home_server.db").await?;
         let devices = Devices::read("devices.conf").await?;
 
         for plug in devices.plugs {

src/db.rs

@@ -47,14 +47,10 @@ impl DataBase {
     pub fn read(&self, device: &str) -> Result<Vec<(u64, f32)>> {
         self.sql
             .prepare(&format!(
-                // "
-                //     SELECT time, watts
-                //     FROM  data
-                //     WHERE device={device}
-                // "
                 "
                     SELECT time, watts
-                    FROM  data
+                    FROM data
+                    WHERE device=\"{device}\"
                 "
             ))?
             .query_map([], |row| Ok((row.get(0)?, row.get(1)?)))?

src/main.rs

@@ -41,6 +41,8 @@ async fn main() -> Result<()> {
                     .lock()
                     .unwrap()
                     .write(plug.name(), since_epoch()?, usage)?;
+
+                println!("{} uses {usage} W", plug.name());
             }
 
             Ok::<(), anyhow::Error>(())