package testsupport

import "context"

type InmemoryConnection struct {
	ctx         context.Context
	frontToBack chan ([]byte)
	backToFront chan ([]byte)
	addr        string
}

func NewInmemoryConnection(ctx context.Context, addr string) *InmemoryConnection {
	pipe := InmemoryConnection{
		ctx: ctx,
		// TODO: somehow does not work with unbuffered channel and yamux
		frontToBack: make(chan []byte, 0),
		backToFront: make(chan []byte, 0),
		addr:        addr,
	}
	return &pipe
}

func (bitpipe *InmemoryConnection) Front() *ChannelReadWriter {
	return pipe(bitpipe.ctx, bitpipe.backToFront, bitpipe.frontToBack, bitpipe.addr)
}

func (bitpipe *InmemoryConnection) Back() *ChannelReadWriter {
	return pipe(bitpipe.ctx, bitpipe.frontToBack, bitpipe.backToFront, bitpipe.addr)
}

func pipe(ctx context.Context, receiveBuffer <-chan []byte, sendBuffer chan<- []byte, remoteAddr string) *ChannelReadWriter {
	return NewChannelReadWriter(ctx, receiveBuffer, sendBuffer)
}