server with basic hot reload

internal/config/config.go

@@ -1,26 +1,43 @@
 package config
 
 import (
+	"sync/atomic"
+
 	"github.com/akyaiy/GSfass/core/config"
 )
 
 type ServerConfig struct {
-	Port int `mapstructure:"port"`
-	Addr string `mapstructure:"address"`
+	Port            int    `mapstructure:"port"`
+	Addr            string `mapstructure:"address"`
+	StaticFilesPath string `mapstructure:"static_dir"`
+	LogPath         string `mapstructure:"log_path"`
 }
 
 type Config struct {
 	Server ServerConfig `mapstructure:"server"`
 }
 
+var configPath atomic.Value // string
+var defaults = map[string]any{
+	"server.port":       8080,
+	"server.address":    "127.0.0.0",
+	"server.static_dir": "./static",
+}
+
+func read(cfg *Config) error {
+	return config.Read().Config().FilePath(configPath.Load().(string)).SetBy(cfg).SetDefaults(defaults).End()
+}
+
 func LoadConfig(path string) (*Config, error) {
+	configPath.Store(path)
 	var cfg Config
-	err := config.Read().Config().FilePath(path).SetBy(&cfg).SetDefaults(map[string]any{
-		"server.port": 8080,
-		"server.address": "127.0.0.0",
-	}).End()
+	err := read(&cfg)
 	if err != nil {
 		return nil, err
 	}
 	return &cfg, nil
 }
+
+func ReloadConfig(cfg *Config) error {
+	return read(cfg)
+}