use eva_common::err_logger;
use eva_common::prelude::*;
use eva_sdk::prelude::*;
use serde::Deserialize;

err_logger!();

const AUTHOR: &str = "Bohemia Automation";
const VERSION: &str = env!("CARGO_PKG_VERSION");
const DESCRIPTION: &str = "Service";

#[cfg(not(feature = "std-alloc"))]
#[global_allocator]
static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;

struct Handlers {
    info: ServiceInfo,
}

#[async_trait::async_trait]
impl RpcHandlers for Handlers {
    async fn handle_call(&self, event: RpcEvent) -> RpcResult {
        svc_rpc_need_ready!();
        let method = event.parse_method()?;
        #[allow(clippy::single_match)]
        match method {
            _ => svc_handle_default_rpc(method, &self.info),
        }
    }
    async fn handle_frame(&self, _frame: Frame) {
        svc_need_ready!();
    }
}

#[derive(Deserialize)]
#[serde(deny_unknown_fields)]
struct Config {}

#[svc_main]
async fn main(mut initial: Initial) -> EResult<()> {
    let _config: Config = Config::deserialize(
        initial
            .take_config()
            .ok_or_else(|| Error::invalid_data("config not specified"))?,
    )?;
    let info = ServiceInfo::new(AUTHOR, VERSION, DESCRIPTION);
    let handlers = Handlers { info };
    eapi_bus::init(&initial, handlers).await?;
    initial.drop_privileges()?;
    eapi_bus::init_logs(&initial)?;
    svc_start_signal_handlers();
    eapi_bus::mark_ready().await?;
    info!("{} started ({})", DESCRIPTION, initial.id());
    eapi_bus::block().await;
    eapi_bus::mark_terminating().await?;
    Ok(())
}