clear

cmd/evening_detective/main.go

@@ -50,6 +50,7 @@ func main() {
 
 	linkService := link.NewLinkService()
 
+	clientHost := config.GetHost()
 	proto.RegisterEveningDetectiveServer(
 		s,
 		app.NewServer(
@@ -57,6 +58,7 @@ func main() {
 				repository,
 				storyService,
 				linkService,
+				clientHost,
 			),
 		),
 	)
@@ -112,9 +114,9 @@ func main() {
 	muxUser.Handle("/", fileServerUser)
 
 	// Serve user web server
-	log.Println("Serving user web on http://0.0.0.0:8100")
+	log.Println("Serving user web on http://0.0.0.0" + config.ClientPort)
 	go func() {
-		log.Fatalln(http.ListenAndServe(":8100", muxUser))
+		log.Fatalln(http.ListenAndServe(config.ClientPort, muxUser))
 	}()
 
 	muxAdmin := http.NewServeMux()

internal/config/config.go

@@ -1,10 +1,15 @@
 package config
 
 import (
+	"net"
 	"os"
 	"path/filepath"
 )
 
+const (
+	ClientPort = ":8100"
+)
+
 func GetStoryFilepath() string {
 	return getFilepath("STORY_FILENAME", "data/story/story.json")
 }
@@ -13,6 +18,18 @@ func GetDBFilepath() string {
 	return getFilepath("DB_FILENAME", "data/db/store.db")
 }
 
+func GetHost() string {
+	host := os.Getenv("HOST")
+	if host != "" {
+		return host
+	}
+	ips, err := getLocalIPs()
+	if err != nil || len(ips) == 0 {
+		return "127.0.0.1" + ClientPort
+	}
+	return ips[0] + ClientPort
+}
+
 func getFilepath(env string, defaultFilepath string) string {
 	filepath := selectFilepath(env, defaultFilepath)
 	ensureDirExists(filepath)
@@ -34,3 +51,29 @@ func ensureDirExists(filePath string) error {
 	}
 	return os.MkdirAll(dir, 0755)
 }
+
+func getLocalIPs() ([]string, error) {
+	var ips []string
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, addr := range addrs {
+		ipNet, ok := addr.(*net.IPNet)
+		if !ok {
+			continue
+		}
+
+		ip := ipNet.IP
+		if ip.IsLoopback() || ip.IsLinkLocalMulticast() || ip.IsLinkLocalUnicast() {
+			continue
+		}
+
+		if ipv4 := ip.To4(); ipv4 != nil {
+			ips = append(ips, ipv4.String())
+		}
+	}
+
+	return ips, nil
+}

internal/modules/link/interface.go

@@ -1,5 +1,5 @@
 package link
 
 type ILinkService interface {
-	GetTeamClientLink(name string, password string) (string, error)
+	GetTeamClientLink(host string, name string, password string) string
 }

internal/modules/link/service.go

@@ -2,7 +2,6 @@ package link
 
 import (
 	"fmt"
-	"net"
 	"net/url"
 )
 
@@ -12,42 +11,6 @@ func NewLinkService() ILinkService {
 	return &service{}
 }
 
-func (s *service) GetTeamClientLink(name string, password string) (string, error) {
-	ip := selectIP()
-	u := fmt.Sprintf("http://%s:8100?name=%s&password=%s", ip, url.PathEscape(name), password)
-	return u, nil
-}
-
-func selectIP() string {
-	ips, err := getLocalIPs()
-	if err != nil || len(ips) == 0 {
-		return "127.0.0.1"
-	}
-	return ips[0]
-}
-
-func getLocalIPs() ([]string, error) {
-	var ips []string
-	addrs, err := net.InterfaceAddrs()
-	if err != nil {
-		return nil, err
-	}
-
-	for _, addr := range addrs {
-		ipNet, ok := addr.(*net.IPNet)
-		if !ok {
-			continue
-		}
-
-		ip := ipNet.IP
-		if ip.IsLoopback() || ip.IsLinkLocalMulticast() || ip.IsLinkLocalUnicast() {
-			continue
-		}
-
-		if ipv4 := ip.To4(); ipv4 != nil {
-			ips = append(ips, ipv4.String())
-		}
-	}
-
-	return ips, nil
+func (s *service) GetTeamClientLink(host string, name string, password string) string {
+	return fmt.Sprintf("http://%s?name=%s&password=%s", host, url.PathEscape(name), password)
 }

internal/services/services.go

@@ -22,17 +22,20 @@ type Services struct {
 	repository   *Repository
 	storyService *story_service.StoryService
 	linkService  link.ILinkService
+	clientHost   string
 }
 
 func NewServices(
 	repository *Repository,
 	storyService *story_service.StoryService,
 	linkService link.ILinkService,
+	clientHost string,
 ) *Services {
 	return &Services{
 		repository:   repository,
 		storyService: storyService,
 		linkService:  linkService,
+		clientHost:   clientHost,
 	}
 }
 
@@ -157,10 +160,7 @@ func (s *Services) GetTeams(ctx context.Context, _ *proto.GetTeamsReq) (*proto.G
 		if err != nil {
 			return nil, err
 		}
-		newTeam.Url, err = s.linkService.GetTeamClientLink(team.Name, team.Password)
-		if err != nil {
-			return nil, err
-		}
+		newTeam.Url = s.linkService.GetTeamClientLink(s.clientHost, team.Name, team.Password)
 		newTeam.SpendTime = int64(len(actions))
 		currentApplications, err := s.repository.GetApplicationsByState(ctx, team.ID, "NEW")
 		if err != nil {
@@ -198,10 +198,7 @@ func (s *Services) DownloadTeamsQrCodesFile(ctx context.Context, req *proto.Down
 		return nil, err
 	}
 	for _, team := range teams {
-		team.Link, err = s.linkService.GetTeamClientLink(team.Name, team.Password)
-		if err != nil {
-			return nil, err
-		}
+		team.Link = s.linkService.GetTeamClientLink(s.clientHost, team.Name, team.Password)
 	}
 	b, err := pdf_service.CreateTeamsPdf(teams)
 	if err != nil {