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use log::{info};

use crate::fs_event_emitter::FsEventEmitter;
use crate::fs_completion_handler::{FsCompletionHandler, FsCompletionHandlerActor};
use crate::fs_notify_consumer::{FsNotifyConsumerHandler, FsNotifyConsumerHandlerActor};
use crate::event_processor::{EventProcessorActor, EventProcessor};
use crate::fs_event_retriever::FsRetriever;
use crate::event_handler::{EventHandler, OutputEvent};
use crate::completion_event_serializer::CompletionEventSerializer;
use crate::event_decoder::PayloadDecoder;
use crate::event_handler;
use std::fmt::Debug;

pub async fn local_service<
    Err,
    EventEncoderT,
    CompletedEventT,
    EventDecoderT,
    EventT,
    EventHandlerT,
>(
    input_directory: impl AsRef<str>,
    output_directory: impl AsRef<str>,
    event_encoder: EventEncoderT,
    event_decoder: EventDecoderT,
    event_handler: EventHandlerT,
) -> Result<(), Box<dyn std::error::Error>>
    where
        Err: Debug + Clone + Send + Sync + 'static,
        CompletedEventT: Clone + Send + Sync + 'static,
        EventT: Clone + Send + Sync + 'static,
        EventEncoderT: CompletionEventSerializer<CompletedEvent=CompletedEventT, Output=Vec<u8>, Error=crate::error::Error<Err>> + Clone + Send + Sync + 'static,
        EventDecoderT: PayloadDecoder<EventT> + Clone + Send + Sync + 'static,
        EventHandlerT: EventHandler<InputEvent=EventT, OutputEvent=CompletedEventT, Error=crate::error::Error<Err>> + Clone + Send + Sync + 'static
{
    let input_directory = input_directory.as_ref();
    let output_directory = output_directory.as_ref();

    let fs_event_emitter = FsEventEmitter::new(output_directory);

    let (fs_completion_handler, fs_completion_handle) = FsCompletionHandlerActor::new(
        FsCompletionHandler::new(
            event_encoder,
            fs_event_emitter,
        )
    ).await;

    let (fs_notify_consumer, fs_notify_handle) = FsNotifyConsumerHandlerActor::new(
        FsNotifyConsumerHandler::new(
            input_directory,
            fs_completion_handler.clone(),
        )
    ).await;


    let event_processors: Vec<_> = (0..40)
        .into_iter()
        .map(|_| {
            EventProcessorActor::new(EventProcessor::new(
                fs_notify_consumer.clone(),
                fs_completion_handler.clone(),
                event_handler.clone(),
                FsRetriever::new(event_decoder.clone()),
            ))
        })
        .collect();

    futures::future::join_all(event_processors.iter().map(|ep| ep.0.start_processing())).await;
    info!("started processors");


    // futures::future::join_all(event_processors.into_iter().map(|ep| ep.0.release())).await;
    futures::future::join_all(event_processors.into_iter().map(|ep| ep.1)).await;


    fs_notify_handle.await;
    fs_completion_handle.await;
    // fs_notify_handle.await;
    // info!("fs_notify_handle");
    // info!("fs_completion_handle");
    // info!("event_processors.await");

    info!("Complete");
    Ok(())
}