// 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::pin::Pin;

use futures::Stream;
use tonic::transport::Server;
use tonic::{Request, Response, Status, Streaming};

use flight::{
    flight_service_server::FlightService, flight_service_server::FlightServiceServer,
    Action, ActionType, Criteria, Empty, FlightData, FlightDescriptor, FlightInfo,
    HandshakeRequest, HandshakeResponse, PutResult, SchemaResult, Ticket,
};

#[derive(Clone)]
pub struct FlightServiceImpl {}

#[tonic::async_trait]
impl FlightService for FlightServiceImpl {
    type HandshakeStream = Pin<
        Box<dyn Stream<Item = Result<HandshakeResponse, Status>> + Send + Sync + 'static>,
    >;
    type ListFlightsStream =
        Pin<Box<dyn Stream<Item = Result<FlightInfo, Status>> + Send + Sync + 'static>>;
    type DoGetStream =
        Pin<Box<dyn Stream<Item = Result<FlightData, Status>> + Send + Sync + 'static>>;
    type DoPutStream =
        Pin<Box<dyn Stream<Item = Result<PutResult, Status>> + Send + Sync + 'static>>;
    type DoActionStream = Pin<
        Box<dyn Stream<Item = Result<flight::Result, Status>> + Send + Sync + 'static>,
    >;
    type ListActionsStream =
        Pin<Box<dyn Stream<Item = Result<ActionType, Status>> + Send + Sync + 'static>>;
    type DoExchangeStream =
        Pin<Box<dyn Stream<Item = Result<FlightData, Status>> + Send + Sync + 'static>>;

    async fn handshake(
        &self,
        _request: Request<Streaming<HandshakeRequest>>,
    ) -> Result<Response<Self::HandshakeStream>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn list_flights(
        &self,
        _request: Request<Criteria>,
    ) -> Result<Response<Self::ListFlightsStream>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn get_flight_info(
        &self,
        _request: Request<FlightDescriptor>,
    ) -> Result<Response<FlightInfo>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn get_schema(
        &self,
        _request: Request<FlightDescriptor>,
    ) -> Result<Response<SchemaResult>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn do_get(
        &self,
        _request: Request<Ticket>,
    ) -> Result<Response<Self::DoGetStream>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn do_put(
        &self,
        _request: Request<Streaming<FlightData>>,
    ) -> Result<Response<Self::DoPutStream>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn do_action(
        &self,
        _request: Request<Action>,
    ) -> Result<Response<Self::DoActionStream>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn list_actions(
        &self,
        _request: Request<Empty>,
    ) -> Result<Response<Self::ListActionsStream>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }

    async fn do_exchange(
        &self,
        _request: Request<Streaming<FlightData>>,
    ) -> Result<Response<Self::DoExchangeStream>, Status> {
        Err(Status::unimplemented("Not yet implemented"))
    }
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let addr = "[::1]:50051".parse()?;
    let service = FlightServiceImpl {};

    let svc = FlightServiceServer::new(service);

    Server::builder().add_service(svc).serve(addr).await?;

    Ok(())
}