fix: export configuration for port

internal/chronicle/adapter/http/http.go

@@ -17,12 +17,12 @@ type Parser interface {
 }
 
 type HttpServer struct {
-	app common.Service
+	app common.RestService
 }
 
 // TODO: Does it make more sense that we pass in the core interfaces here
 // and keep the route logic internal to this package, instead of passing it in?
-func NewHttpServer(application common.Service) HttpServer {
+func NewHttpServer(application common.RestService) HttpServer {
 	return HttpServer{
 		app: application,
 	}
@@ -40,7 +40,7 @@ func (h HttpServer) Start() error {
 	r.Mount("/characters", h.app.Routes()["Characters"][0])
 	r.Mount("/worlds", h.app.Routes()["Worlds"][0])
 
-	return http.ListenAndServe(":3000", r)
+	return http.ListenAndServe(":"+h.app.Port(), r)
 }
 
 func DefaultDecoder(r *http.Request, v interface{}) error {

internal/chronicle/service/application.go

@@ -19,7 +19,12 @@ import (
 
 func NewService() error {
 	// TODO: This shold probably come from the adapter instead
-	psqlConnStr := os.Getenv("DATABASE_URL")
+	psqlConnStr := os.Getenv("CHRONICLE_DATABASE_URL")
+	httpPort, httpPortFound := os.LookupEnv("CHRONICLE_HTTP_PORT")
+	if !httpPortFound {
+		httpPort = "3000"
+	}
+
 	db, err := pgxpool.New(context.Background(), psqlConnStr)
 	if err != nil {
 		return fmt.Errorf("Unable to connect to database: %v\n", err)
@@ -37,6 +42,9 @@ func NewService() error {
 
 	service := ChronicleService{
 		ChronicleApplication: app,
+		Config: ChronicleServiceConfig{
+			Port: httpPort,
+		},
 	}
 
 	httpServer := http.NewHttpServer(service)
@@ -46,6 +54,7 @@ func NewService() error {
 
 type ChronicleService struct {
 	ChronicleApplication port.ChronicleApplication
+	Config               ChronicleServiceConfig
 }
 
 func (c ChronicleService) Routes() map[string][]chi.Router {
@@ -65,3 +74,11 @@ func (c ChronicleService) Routes() map[string][]chi.Router {
 		"Worlds":     {worldRoutes},
 	}
 }
+
+func (c ChronicleService) Port() string {
+	return c.Config.Port
+}
+
+type ChronicleServiceConfig struct {
+	Port string
+}

internal/common/service.go

@@ -2,7 +2,8 @@ package common
 
 import "github.com/go-chi/chi/v5"
 
-// This should represent an overall service application
-type Service interface {
+// Represents an overall rest http based service
+type RestService interface {
 	Routes() map[string][]chi.Router
+	Port() string
 }