fix(proxy): reject configs without enabled pools

Co-Authored-By: Virgil <virgil@lethean.io>

api/router.go

@@ -21,6 +21,8 @@ type RouteRegistrar interface {
 
 // mux := http.NewServeMux()
 // api.RegisterRoutes(mux, p)
+// _ = mux
+//
 // The mounted routes are GET /1/summary, /1/workers, and /1/miners.
 func RegisterRoutes(router RouteRegistrar, p *proxy.Proxy) {
 	if router == nil || p == nil {

config_test.go

@@ -39,3 +39,19 @@ func TestConfig_Validate_Ugly(t *testing.T) {
 		t.Fatalf("expected invalid workers and empty pool url to fail validation")
 	}
 }
+
+func TestConfig_Validate_NoEnabledPool_Ugly(t *testing.T) {
+	cfg := &Config{
+		Mode:    "simple",
+		Workers: WorkersByRigID,
+		Bind:    []BindAddr{{Host: "0.0.0.0", Port: 3333}},
+		Pools: []PoolConfig{
+			{URL: "pool-a.example:3333", Enabled: false},
+			{URL: "pool-b.example:4444", Enabled: false},
+		},
+	}
+
+	if result := cfg.Validate(); result.OK {
+		t.Fatalf("expected config with no enabled pools to fail validation")
+	}
+}

core_impl.go

@@ -91,10 +91,17 @@ func (c *Config) Validate() Result {
 	if len(c.Pools) == 0 {
 		return newErrorResult(errors.New("pool list is empty"))
 	}
+	enabledPools := 0
 	for _, pool := range c.Pools {
 		if pool.Enabled && strings.TrimSpace(pool.URL) == "" {
 			return newErrorResult(errors.New("enabled pool url is empty"))
 		}
+		if pool.Enabled {
+			enabledPools++
+		}
+	}
+	if enabledPools == 0 {
+		return newErrorResult(errors.New("pool list has no enabled entries"))
 	}
 	return newSuccessResult()
 }

stats.go

@@ -11,6 +11,7 @@ import (
 //	stats := proxy.NewStats()
 //	bus.Subscribe(proxy.EventAccept, stats.OnAccept)
 //	bus.Subscribe(proxy.EventReject, stats.OnReject)
+//	_ = stats.Summary()
 type Stats struct {
 	accepted    atomic.Uint64
 	rejected    atomic.Uint64

worker.go

@@ -9,6 +9,7 @@ import (
 //
 //	workers := proxy.NewWorkers(proxy.WorkersByRigID, bus)
 //	workers.OnLogin(proxy.Event{Miner: &proxy.Miner{rigID: "rig-alpha", user: "WALLET", ip: "10.0.0.1"}})
+//	_ = workers.List()
 type Workers struct {
 	mode       WorkersMode
 	entries    []WorkerRecord // ordered by first-seen (stable)