denki 0.1.2

CLI for controlling TP-Link smart home devices — denki (電気) means electricity in Japanese
Documentation 
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//! Python utilities.

use pyo3::types::{PyDict, PyDictMethods, PyList, PyListMethods};
use pyo3::{IntoPyObjectExt, Py, PyResult, Python};
use serde_json::Value;

/// Implements `to_dict` for a `#[pyclass]` struct, converting it to a Python dictionary via serde.
#[macro_export]
macro_rules! impl_to_dict {
    ($ty:ty) => {
        #[pyo3::pymethods]
        impl $ty {
            /// Gets all the properties of this result as a dictionary.
            pub fn to_dict(
                &self,
                py: pyo3::Python,
            ) -> pyo3::PyResult<pyo3::Py<pyo3::types::PyDict>> {
                let value = serde_json::to_value(self)
                    .map_err(|e| pyo3::exceptions::PyException::new_err(e.to_string()))?;

                $crate::tapo_vendor::python::serde_object_to_py_dict(py, &value)
            }
        }
    };
}

/// Converts a serde object to a Python dictionary.
pub fn serde_object_to_py_dict(py: Python, value: &Value) -> PyResult<Py<PyDict>> {
    let dict = PyDict::new(py);

    if let Some(object) = value.as_object() {
        for (key, value) in object {
            let value_mapped = map_value(py, value)?;
            dict.set_item(key, value_mapped)?;
        }
    }

    Ok(dict.into())
}

fn map_value<'py>(py: Python<'py>, value: &'py Value) -> PyResult<impl IntoPyObjectExt<'py>> {
    let mapped_value = match value {
        Value::Object(_) => serde_object_to_py_dict(py, value)?.into_py_any(py)?,
        Value::Array(value) => {
            let array = PyList::empty(py);

            for item in value {
                let mapped_item = map_value(py, item)?;
                array.append(mapped_item)?;
            }

            array.into_py_any(py)?
        }
        Value::String(value) => IntoPyObjectExt::into_py_any(value, py)?,
        Value::Bool(value) => IntoPyObjectExt::into_py_any(value, py)?,
        Value::Number(value) => {
            if let Some(ref value) = value.as_i64() {
                IntoPyObjectExt::into_py_any(value, py)?
            } else if let Some(ref value) = value.as_u64() {
                IntoPyObjectExt::into_py_any(value, py)?
            } else if let Some(ref value) = value.as_f64() {
                IntoPyObjectExt::into_py_any(value, py)?
            } else {
                todo!()
            }
        }
        Value::Null => py.None(),
    };

    Ok(mapped_value)
}