first commit

internal/config/config.go

@@ -0,0 +1,48 @@
+package config
+
+import (
+	"log"
+	"os"
+	"strings"
+
+	"github.com/joho/godotenv"
+)
+
+type Config struct {
+	DBHost     string
+	DBPort     string
+	DBUser     string
+	DBPassword string
+	DBName     string
+	DBSSLMode  string
+	Topics     []string
+	LogDebug   bool
+}
+
+func Load() *Config {
+	_ = godotenv.Load()
+
+	return &Config{
+		DBHost:     getEnv("DB_HOST", "localhost"),
+		DBPort:     getEnv("DB_PORT", "5432"),
+		DBUser:     getEnv("DB_USER", "postgres"),
+		DBPassword: getEnv("DB_PASSWORD", "postgres"),
+		DBName:     getEnv("DB_NAME", "middleware"),
+		DBSSLMode:  getEnv("DB_SSLMODE", "disable"),
+		Topics:     strings.Split(getEnv("WATERMILL_TOPICS", "example_topic"), ","),
+		LogDebug:   getEnv("LOG_DEBUG", "false") == "true",
+	}
+}
+
+func getEnv(key, def string) string {
+	if val, ok := os.LookupEnv(key); ok {
+		return val
+	}
+	return def
+}
+
+func Must(err error) {
+	if err != nil {
+		log.Fatalf("❌ %v", err)
+	}
+}