import os
import net.unix
import net

const (
	use_net   = net.no_timeout // ensure that `net` is used, i.e. no warnings
	tfolder   = os.join_path(os.vtmp_dir(), 'net_and_unix_together')
	test_port = os.join_path(tfolder, 'unix_domain_socket')
)

fn testsuite_begin() {
	os.mkdir_all(tfolder) or {}
}

fn testsuite_end() {
	os.rmdir_all(tfolder) or {}
}

fn test_that_net_and_net_unix_can_be_imported_together_without_conflicts() {
	mut l := unix.listen_stream(test_port) or { panic(err) }
	spawn echo_server(mut l)
	defer {
		l.close() or {}
	}
	//
	mut c := unix.connect_stream(test_port)!
	defer {
		c.close() or {}
	}
	//
	data := 'Hello from vlib/net!'
	c.write_string(data)!
	mut buf := []u8{len: 100}
	assert c.read(mut buf)! == data.len
	eprintln('< client read back buf: |${buf[0..data.len].bytestr()}|')
	assert buf[0..data.len] == data.bytes()
}

fn perror(s string) ! {
	println(s)
}

fn handle_conn(mut c unix.StreamConn) ! {
	for {
		mut buf := []u8{len: 100, init: 0}
		read := c.read(mut buf) or { return perror('Server: connection dropped') }
		eprintln('> server read ${read:3}, buf: |${buf.bytestr()}|')
		c.write(buf[..read]) or { return perror('Server: connection dropped') }
	}
}

fn echo_server(mut l unix.StreamListener) ! {
	for {
		mut new_conn := l.accept() or { continue }
		handle_conn(mut new_conn) or {}
	}
}
