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// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements. See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership. The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// with the License. You may obtain a copy of the License at

//

// http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied. See the License for the

// specific language governing permissions and limitations

// under the License.

use std::fmt::{self, Display, Formatter};

use std::sync::Arc;

use datafusion::logical_expr::DropFunction;

use pyo3::IntoPyObjectExt;

use pyo3::prelude::*;

use super::logical_node::LogicalNode;

use crate::common::df_schema::PyDFSchema;

use crate::sql::logical::PyLogicalPlan;

#[pyclass(frozen, name = "DropFunction", module = "datafusion.expr", subclass)]

#[derive(Clone)]

pub struct PyDropFunction {

drop: DropFunction,

}

impl From<PyDropFunction> for DropFunction {

fn from(drop: PyDropFunction) -> Self {

drop.drop

}

}

impl From<DropFunction> for PyDropFunction {

fn from(drop: DropFunction) -> PyDropFunction {

PyDropFunction { drop }

}

}

impl Display for PyDropFunction {

fn fmt(&self, f: &mut Formatter) -> fmt::Result {

write!(f, "DropFunction")

}

}

#[pymethods]

impl PyDropFunction {

#[new]

fn new(name: String, schema: PyDFSchema, if_exists: bool) -> PyResult<Self> {

Ok(PyDropFunction {

drop: DropFunction {

name,

schema: Arc::new(schema.into()),

if_exists,

},

})

}

fn name(&self) -> PyResult<String> {

Ok(self.drop.name.clone())

}

fn schema(&self) -> PyDFSchema {

(*self.drop.schema).clone().into()

}

fn if_exists(&self) -> PyResult<bool> {

Ok(self.drop.if_exists)

}

fn __repr__(&self) -> PyResult<String> {

Ok(format!("DropFunction({self})"))

}

fn __name__(&self) -> PyResult<String> {

Ok("DropFunction".to_string())

}

}

impl LogicalNode for PyDropFunction {

fn inputs(&self) -> Vec<PyLogicalPlan> {

vec![]

}

fn to_variant<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyAny>> {

self.clone().into_bound_py_any(py)

}

}