feat: ✨ better env variable handling

internal/api/env.go

@@ -6,16 +6,8 @@ type EnvConfig struct {
 	Environment string
 }
 
-var envVarMappings = util.EnvMapping{
-	"ENVIRONMENT": &env.Environment,
-}
-
-var env = &EnvConfig{}
-
-func InitEnv() *EnvConfig {
-	for key, goVar := range envVarMappings {
-		*goVar = util.GetEnvOrPanic(key)
+func InitEnv() EnvConfig {
+	return EnvConfig{
+		Environment: util.GetEnvOrDefault("ENVIRONMENT", "dev"),
 	}
-
-	return env
 }

internal/api/init.go

@@ -22,7 +22,7 @@ func InitService() http.Handler {
 	router.Use(middleware.Recoverer)
 	router.Use(httpcore.LoggerMiddleware)
 
-	// env := api.InitEnv() // get typed environment
+	// env := InitEnv() // get typed environment
 
 	controller := handlers.NewApiController()
 	applyRoutes(router, controller)

pkg/util/env.go

@@ -2,12 +2,21 @@ package util
 
 import "os"
 
-type EnvMapping map[string]*string
-
+// GetEnvOrPanic returns the value of the environment variable with the given key.
 func GetEnvOrPanic(key string) string {
 	value := os.Getenv(key)
 	if value == "" {
 		panic(key + " environment variable is not set")
 	}
 	return value
 }
+
+// GetEnvOrDefault returns the value of the environment variable with the given key,
+// or a default value if the environment variable is not set.
+func GetEnvOrDefault(key, defaultValue string) string {
+	value := os.Getenv(key)
+	if value == "" {
+		return defaultValue
+	}
+	return value
+}