package service

import (
	"encoding/json"
	"testing"

	"github.com/mhsanaei/3x-ui/v3/internal/util/json_util"
)

func TestEnsureAPIServices(t *testing.T) {
	// legacy template without RoutingService gets it injected
	out := ensureAPIServices(json_util.RawMessage(`{"services":["HandlerService","LoggerService","StatsService"],"tag":"api"}`))
	var parsed struct {
		Services []string `json:"services"`
		Tag      string   `json:"tag"`
	}
	if err := json.Unmarshal(out, &parsed); err != nil {
		t.Fatal(err)
	}
	want := map[string]bool{"HandlerService": true, "StatsService": true, "RoutingService": true, "LoggerService": true}
	if len(parsed.Services) != 4 {
		t.Fatalf("expected 4 services, got %v", parsed.Services)
	}
	for _, svc := range parsed.Services {
		if !want[svc] {
			t.Fatalf("unexpected service %q", svc)
		}
	}
	if parsed.Tag != "api" {
		t.Fatalf("tag must be preserved, got %q", parsed.Tag)
	}

	// complete api block is returned unchanged (no marshal churn)
	full := json_util.RawMessage(`{"services":["HandlerService","StatsService","RoutingService"],"tag":"api"}`)
	if got := ensureAPIServices(full); string(got) != string(full) {
		t.Fatalf("complete api block must pass through untouched, got %s", got)
	}

	// absent api block stays absent
	if got := ensureAPIServices(nil); got != nil {
		t.Fatalf("nil api block must stay nil, got %s", got)
	}
}