添加歌曲封面接口

config/config.go

@@ -3,22 +3,32 @@ package config
 import (
 	"log"
 	"os"
+	"path"
 	"strconv"
 )
 
 type Config struct {
 	DatabasePath string
+	CachePath    string
 }
 
 // LoadConfig loads configuration from environment variables
 func LoadConfig() *Config {
 	cfg := &Config{
 		DatabasePath: getEnv("DATABASE_PATH", "./butterfliu.db"),
+		CachePath:    getEnv("CACHE_PATH", "./cache"),
 	}
+	os.MkdirAll(cfg.CachePath, os.ModeAppend)
 
 	return cfg
 }
 
+func (self *Config) GetCachePath(cacheType string) string {
+	path := path.Join(self.CachePath, cacheType)
+	os.MkdirAll(path, os.ModeAppend)
+	return path
+}
+
 // getEnv gets an environment variable with a default value
 func getEnv(key, defaultValue string) string {
 	if value := os.Getenv(key); value != "" {