package notify

import (
	"fmt"
	"net"
	"time"
)

func (c *ClientCommon) dispatchFileEnvelope(env Envelope, now time.Time) {
	event := FileEvent{
		NetType:    NET_CLIENT,
		ServerConn: c,
		Kind:       env.Kind,
		Packet:     env.File,
		Time:       now,
	}
	pool := c.getFileReceivePool()
	switch env.Kind {
	case EnvelopeAck:
		event.Packet.Stage = env.File.Stage
		event.Packet.Error = env.File.Error
		event.Received = env.File.Offset
		if c.getFileAckPool().deliver(clientFileScope(), event) {
			return
		}
	case EnvelopeFileMeta:
		session, err := pool.onMeta(clientFileScope(), env.File, now)
		if session != nil {
			event.Path = session.tmpPath
			event.Received = session.received
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	case EnvelopeFileChunk:
		session, err := pool.onChunk(clientFileScope(), env.File, now)
		if session != nil {
			event.Path = session.tmpPath
			event.Received = session.received
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	case EnvelopeFileEnd:
		finalPath, session, err := pool.onEnd(clientFileScope(), env.File, now)
		if session != nil {
			event.Path = finalPath
			event.Received = session.received
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	case EnvelopeFileAbort:
		session, err := pool.onAbort(clientFileScope(), env.File, now)
		event.Received = env.File.Offset
		if session != nil {
			event.Path = session.tmpPath
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	default:
	}
	if env.Kind == EnvelopeFileMeta || env.Kind == EnvelopeFileChunk || env.Kind == EnvelopeFileEnd || env.Kind == EnvelopeFileAbort {
		if ackErr := c.sendFileAck(env, event.Err); ackErr != nil && event.Err == nil {
			event.Err = ackErr
		}
	}
	fillFileEventProgress(&event)
	c.publishReceivedFileEvent(event)
}

func (s *ServerCommon) dispatchFileEnvelope(logical *LogicalConn, transport *TransportConn, conn net.Conn, env Envelope, now time.Time) {
	if transport == nil && logical != nil {
		transport = logical.CurrentTransportConn()
	}
	event := FileEvent{
		LogicalConn:   logical,
		NetType:       NET_SERVER,
		TransportConn: transport,
		Kind:          env.Kind,
		Packet:        env.File,
		Time:          now,
	}
	pool := s.getFileReceivePool()
	switch env.Kind {
	case EnvelopeAck:
		event.Packet.Stage = env.File.Stage
		event.Packet.Error = env.File.Error
		event.Received = env.File.Offset
		scopes := serverTransportDeliveryScopes(logical)
		if transport := fileEventTransportConnSnapshot(event); transport != nil {
			scopes = serverTransportDeliveryScopesForTransport(transport)
		}
		if s.getFileAckPool().deliverAny(scopes, event) {
			return
		}
	case EnvelopeFileMeta:
		session, err := pool.onMeta(serverFileScope(logical), env.File, now)
		if session != nil {
			event.Path = session.tmpPath
			event.Received = session.received
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	case EnvelopeFileChunk:
		session, err := pool.onChunk(serverFileScope(logical), env.File, now)
		if session != nil {
			event.Path = session.tmpPath
			event.Received = session.received
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	case EnvelopeFileEnd:
		finalPath, session, err := pool.onEnd(serverFileScope(logical), env.File, now)
		if session != nil {
			event.Path = finalPath
			event.Received = session.received
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	case EnvelopeFileAbort:
		session, err := pool.onAbort(serverFileScope(logical), env.File, now)
		event.Received = env.File.Offset
		if session != nil {
			event.Path = session.tmpPath
			fillFileEventTiming(&event, session)
		}
		event.Err = err
	default:
	}
	if env.Kind == EnvelopeFileMeta || env.Kind == EnvelopeFileChunk || env.Kind == EnvelopeFileEnd || env.Kind == EnvelopeFileAbort {
		if ackErr := s.sendFileAckInbound(logical, transport, conn, env, event.Err); ackErr != nil && event.Err == nil {
			event.Err = ackErr
		}
	}
	fillFileEventProgress(&event)
	s.publishReceivedFileEvent(event)
}

func (c *ClientCommon) emitFileEvent(event FileEvent) {
	c.mu.Lock()
	handler := c.onFileEvent
	c.mu.Unlock()
	if handler == nil {
		return
	}
	handler(event)
}

func (s *ServerCommon) emitFileEvent(event FileEvent) {
	s.mu.Lock()
	handler := s.onFileEvent
	s.mu.Unlock()
	if handler == nil {
		return
	}
	handler(event)
}

func (c *ClientCommon) logFileEvent(role string, event FileEvent) {
	if !(c.debugMode || event.Err != nil) {
		return
	}
	fmt.Printf("%s file event kind=%d file_id=%s received=%d path=%s err=%v\n",
		role, event.Kind, event.Packet.FileID, event.Received, event.Path, event.Err)
}

func (s *ServerCommon) logFileEvent(role string, event FileEvent) {
	if !(s.debugMode || event.Err != nil) {
		return
	}
	fmt.Printf("%s file event kind=%d file_id=%s received=%d path=%s err=%v\n",
		role, event.Kind, event.Packet.FileID, event.Received, event.Path, event.Err)
}