// Copyright 2024 RisingWave Labs
//
// Licensed 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 risingwave_pb::stream_plan::LocalApproxPercentileNode;

use crate::executor::LocalApproxPercentileExecutor;
use crate::from_proto::*;

pub struct LocalApproxPercentileExecutorBuilder;

impl_stream_node_body!(LocalApproxPercentile(LocalApproxPercentileNode) => LocalApproxPercentileExecutorBuilder);

impl ExecutorBuilder for LocalApproxPercentileExecutorBuilder {
    type Node = LocalApproxPercentileNode;

    async fn new_boxed_executor(
        params: ExecutorParams,
        node: &Self::Node,
        _store: impl StateStore,
    ) -> StreamResult<Executor> {
        let [input]: [_; 1] = params.input.try_into().unwrap();
        let exec = LocalApproxPercentileExecutor::new(
            params.actor_context,
            input,
            node.base,
            node.percentile_index as usize,
            params.config.developer.chunk_size,
        )
        .boxed();
        Ok(Executor::new(params.info, exec))
    }
}
