初始化项目

config/config.go

@@ -0,0 +1,50 @@
+package config
+
+import (
+	"log"
+	"os"
+	"strconv"
+)
+
+type Config struct {
+	DatabasePath string
+}
+
+// LoadConfig loads configuration from environment variables
+func LoadConfig() *Config {
+	cfg := &Config{
+		DatabasePath: getEnv("DATABASE_PATH", "./butterfliu.db"),
+	}
+
+	return cfg
+}
+
+// getEnv gets an environment variable with a default value
+func getEnv(key, defaultValue string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return defaultValue
+}
+
+// getEnvAsInt gets an environment variable as integer
+func getEnvAsInt(key string, defaultValue int) int {
+	if value := os.Getenv(key); value != "" {
+		if intValue, err := strconv.Atoi(value); err == nil {
+			return intValue
+		}
+		log.Printf("Warning: Invalid integer value for %s: %s, using default: %d", key, value, defaultValue)
+	}
+	return defaultValue
+}
+
+// getEnvAsInt64 gets an environment variable as int64
+func getEnvAsInt64(key string, defaultValue int64) int64 {
+	if value := os.Getenv(key); value != "" {
+		if intValue, err := strconv.ParseInt(value, 10, 64); err == nil {
+			return intValue
+		}
+		log.Printf("Warning: Invalid int64 value for %s: %s, using default: %d", key, value, defaultValue)
+	}
+	return defaultValue
+}