chore: extract python_utils and home-assistant to their own crates

home-assistant/src/event/event.rs

@@ -0,0 +1,27 @@
+use chrono::{DateTime, Utc};
+use pyo3::prelude::*;
+
+use super::event_origin::EventOrigin;
+
+/// Representation of an event within the bus.
+#[derive(Debug, FromPyObject)]
+pub struct Event<Type, Data, Context> {
+    pub event_type: Type,
+    pub data: Data,
+    pub origin: EventOrigin,
+    /// In order to prevent cycles, the user must decide to pass [`Py<PyAny>`] for the `Context` type here
+    /// or for the `Event` type in [`Context`]
+    pub context: Context,
+    time_fired_timestamp: f64,
+}
+
+impl<Type, Data, Context> Event<Type, Data, Context> {
+    pub fn time_fired(&self) -> Option<DateTime<Utc>> {
+        const NANOS_PER_SEC: i32 = 1_000_000_000;
+
+        let secs = self.time_fired_timestamp as i64;
+        let nsecs = (self.time_fired_timestamp.fract() * (NANOS_PER_SEC as f64)) as u32;
+
+        DateTime::from_timestamp(secs, nsecs)
+    }
+}