chore(home-assistant): streamline Python conversion for LightState

home-assistant/src/light/state.rs

@@ -1,54 +1,13 @@
-use std::str::FromStr;
-
-use pyo3::{
-    exceptions::{PyException, PyValueError},
-    prelude::*,
-};
-use snafu::{ResultExt, Snafu};
+use python_utils::{FromPyFromStr, ToStrToPy};
 use strum::EnumString;
 
-#[derive(Debug, Clone, EnumString, strum::Display)]
+#[derive(Debug, Clone, EnumString, strum::Display, FromPyFromStr, ToStrToPy)]
 #[strum(serialize_all = "snake_case")]
 pub enum LightState {
     On,
     Off,
 }
 
-#[derive(Debug, Snafu)]
-pub enum ExtractLightStateError {
-    /// couldn't extract the object as a string
-    ExtractStringError { source: PyErr },
-
-    /// couldn't parse the string as a [`LightState`]
-    ParseError {
-        source: <LightState as FromStr>::Err,
-    },
-}
-
-impl From<ExtractLightStateError> for PyErr {
-    fn from(error: ExtractLightStateError) -> Self {
-        match &error {
-            ExtractLightStateError::ExtractStringError { .. } => {
-                PyException::new_err(error.to_string())
-            }
-            ExtractLightStateError::ParseError { .. } => PyValueError::new_err(error.to_string()),
-        }
-    }
-}
-
-// TODO: replace with a derive(PyFromStr) (analogous to serde_with::DeserializeFromStr) once I make one
-impl<'a, 'py> FromPyObject<'a, 'py> for LightState {
-    type Error = ExtractLightStateError;
-
-    fn extract(ob: Borrowed<'a, 'py, PyAny>) -> Result<Self, Self::Error> {
-        let s = ob.extract::<&str>().context(ExtractStringSnafu)?;
-
-        let state = LightState::from_str(&s).context(ParseSnafu)?;
-
-        Ok(state)
-    }
-}
-
 impl From<LightState> for protocol::light::State {
     fn from(light_state: LightState) -> Self {
         match light_state {