v0.14.4

src/home_assistant.rs

@@ -26,11 +26,7 @@ pub fn resolve_entity_id(
 ) -> Option<String> {
     let requested = entity_override
         .filter(|value| !value.trim().is_empty())
-        .map(str::trim)
-        .unwrap_or_else(|| settings.default_entity_id.trim());
-    if requested.is_empty() {
-        return None;
-    }
+        .map(str::trim)?;
 
     // Aliases are presentation-only. Accepting an alias here is a defensive
     // compatibility path for settings saved by older UI revisions or manual edits;
@@ -48,6 +44,39 @@ pub fn resolve_entity_id(
     Some(requested.to_string())
 }
 
+pub async fn test_connection(
+    default_client: &reqwest::Client,
+    settings: &HomeAssistantSettings,
+) -> Result<()> {
+    if settings.url.trim().is_empty() {
+        bail!("Home Assistant URL is not configured")
+    }
+    if settings.token.trim().is_empty() {
+        bail!("Home Assistant token is not configured")
+    }
+    let mut base = Url::parse(settings.url.trim()).context("invalid Home Assistant URL")?;
+    if !matches!(base.scheme(), "http" | "https") {
+        bail!("Home Assistant URL must use http or https")
+    }
+    base = base.join("api/").context("cannot build Home Assistant API URL")?;
+    let response = request_client(default_client, settings)?
+        .get(base)
+        .bearer_auth(settings.token.trim())
+        .header("Accept", "application/json")
+        .send()
+        .await
+        .context("Home Assistant request failed")?;
+    if !response.status().is_success() {
+        let status = response.status();
+        let body = response.text().await.unwrap_or_default();
+        bail!(
+            "Home Assistant returned {status}: {}",
+            body.chars().take(200).collect::<String>()
+        )
+    }
+    Ok(())
+}
+
 pub async fn read_temperature(
     default_client: &reqwest::Client,
     settings: &HomeAssistantSettings,
@@ -136,7 +165,6 @@ mod tests {
         HomeAssistantSettings {
             url: "http://homeassistant.local:8123".into(),
             token: "token".into(),
-            default_entity_id: "sensor.salon_temperature".into(),
             outdoor_entity_id: "sensor.zewnatrz_temperature".into(),
             sensor_stale_after_seconds: 300,
             allow_invalid_tls: false,
@@ -156,10 +184,7 @@ mod tests {
             resolve_entity_id(&settings, Some("Gabinet")).as_deref(),
             Some("sensor.gabinet_temperature")
         );
-        assert_eq!(
-            resolve_entity_id(&settings, None).as_deref(),
-            Some("sensor.salon_temperature")
-        );
+        assert_eq!(resolve_entity_id(&settings, None), None);
     }
 }