package stratum

import (
	"context"
	"net"
	"testing"
	"time"

	"forge-mesh/internal/config"
)

func TestProxyAcceptsConnection(t *testing.T) {
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatal(err)
	}
	defer ln.Close()

	accepted := make(chan net.Conn, 1)
	go func() {
		conn, err := ln.Accept()
		if err == nil {
			accepted <- conn
		}
	}()

	conn, err := net.Dial("tcp", ln.Addr().String())
	if err != nil {
		t.Fatal(err)
	}
	defer conn.Close()

	select {
	case c := <-accepted:
		_, _ = conn.Write([]byte(`{"id":1,"method":"mining.subscribe","params":[]}` + "\n"))
		buf := make([]byte, 256)
		n, _ := c.Read(buf)
		if n == 0 {
			t.Fatal("expected bytes from miner")
		}
		c.Close()
	case <-time.After(2 * time.Second):
		t.Fatal("accept timeout")
	}
}

func TestProxyStartNoUpstream(t *testing.T) {
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatal(err)
	}
	addr := ln.Addr().String()
	ln.Close()

	p := New(config.StratumConfig{XMRListen: addr})
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	if err := p.StartContext(ctx); err != nil {
		t.Fatal(err)
	}
	defer p.Stop()

	conn, err := net.DialTimeout("tcp", addr, time.Second)
	if err != nil {
		t.Fatal(err)
	}
	defer conn.Close()

	_, err = conn.Write([]byte(`{"id":1,"method":"mining.subscribe","params":[]}` + "\n"))
	if err != nil {
		t.Fatal(err)
	}
}