feat: configurable parser and refactor config

common/cache/ristretto.go

@@ -16,8 +16,8 @@ func Init() {
 		panic("cache already initialized")
 	}
 	c, err := ristretto.NewCache(&ristretto.Config[string, any]{
-		NumCounters: config.Cfg.Cache.NumCounters,
-		MaxCost:     config.Cfg.Cache.MaxCost,
+		NumCounters: config.C().Cache.NumCounters,
+		MaxCost:     config.C().Cache.MaxCost,
 		BufferItems: 64,
 		OnReject: func(item *ristretto.Item[any]) {
 			log.Warnf("Cache item rejected: key=%d, value=%v", item.Key, item.Value)
@@ -30,7 +30,7 @@ func Init() {
 }
 
 func Set(key string, value any) error {
-	ok := cache.SetWithTTL(key, value, 0, time.Duration(config.Cfg.Cache.TTL)*time.Second)
+	ok := cache.SetWithTTL(key, value, 0, time.Duration(config.C().Cache.TTL)*time.Second)
 	if !ok {
 		return fmt.Errorf("failed to set value in cache")
 	}

common/utils/netutil/proxy.go

@@ -1,6 +1,10 @@
 package netutil
 
 import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
 	"net/url"
 
 	"golang.org/x/net/proxy"
@@ -13,3 +17,38 @@ func NewProxyDialer(proxyUrl string) (proxy.Dialer, error) {
 	}
 	return proxy.FromURL(url, proxy.Direct)
 }
+
+func NewProxyHTTPClient(proxyUrl string) (*http.Client, error) {
+	if proxyUrl == "" {
+		return http.DefaultClient, nil
+	}
+
+	u, err := url.Parse(proxyUrl)
+	if err != nil {
+		return nil, err
+	}
+
+	switch u.Scheme {
+	case "http", "https":
+		return &http.Client{
+			Transport: &http.Transport{
+				Proxy: http.ProxyURL(u),
+			},
+		}, nil
+	case "socks5":
+		dialer, err := proxy.SOCKS5("tcp", u.Host, nil, proxy.Direct)
+		if err != nil {
+			return nil, err
+		}
+
+		return &http.Client{
+			Transport: &http.Transport{
+				DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
+					return dialer.Dial(network, addr)
+				},
+			},
+		}, nil
+	default:
+		return nil, fmt.Errorf("unsupported proxy scheme: %s", u.Scheme)
+	}
+}

common/utils/tphutil/tph.go

@@ -13,8 +13,8 @@ func DefaultClient() *telegraph.Client {
 	if tphClient != nil {
 		return tphClient
 	}
-	if config.Cfg.Telegram.Proxy.Enable && config.Cfg.Telegram.Proxy.URL != "" {
-		proxyUrl := config.Cfg.Telegram.Proxy.URL
+	if config.C().Telegram.Proxy.Enable && config.C().Telegram.Proxy.URL != "" {
+		proxyUrl := config.C().Telegram.Proxy.URL
 		var err error
 		tphClient, err = telegraph.NewClientWithProxy(proxyUrl)
 		if err != nil {