use generated::hello::{
    FILE_DESCRIPTOR_SET, HelloReply, HelloRequest,
    greeter_server::{Greeter, GreeterServer},
};

mod generated {
    pub mod hello {
        include!("generated/hello/hello.rs");
    }
}

#[derive(Debug, Default)]
struct GreeterService;

#[tonic::async_trait]
impl Greeter for GreeterService {
    async fn say_hello(
        &self,
        request: tonic::Request<HelloRequest>,
    ) -> Result<tonic::Response<HelloReply>, tonic::Status> {
        let name = request.into_inner().name;
        let reply = HelloReply {
            message: format!("Hello, {}!", name),
        };
        Ok(tonic::Response::new(reply))
    }
}

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

    let reflection = tonic_reflection::server::Builder::configure()
        .register_encoded_file_descriptor_set(FILE_DESCRIPTOR_SET)
        .build_v1()?;

    tonic::transport::Server::builder()
        .add_service(reflection)
        .add_service(GreeterServer::new(GreeterService::default()))
        .serve(addr)
        .await?;

    return Ok(());
}