feat: implement feature-based action handling in file and text share drawers, enhancing user interaction with dynamic feature support

backend/internal/controllers/config.go

@@ -6,10 +6,17 @@ import (
 	"time"
 
 	"github.com/labstack/echo/v5"
+	"github.com/samber/lo"
 	"github.com/spf13/cast"
 )
 
 func GetConfig(c *echo.Context) error {
+	featureConfig := u.GetEnvMap("features")
+	features := lo.FilterMap(lo.Entries(featureConfig), func(e lo.Entry[string, any], _ int) (string, bool) {
+		node, ok := e.Value.(map[string]any)
+		return e.Key, ok && cast.ToBool(node["enabled"])
+	})
+
 	return utils.HTTPSuccessHandler(c, map[string]any{
 		"site_title":  u.GetEnvMap("site.title"),
 		"site_desc":   u.GetEnvMap("site.desc"),
@@ -18,5 +25,6 @@ func GetConfig(c *echo.Context) error {
 		"site_bg_url": u.GetEnvWithDefault("site.bg_url", "https://img.fudaoyuan.icu/api/1/random/?scale_min=1.5&webp=true&md=false&format=302"),
 		"version":     u.GetEnvWithDefault("VERSION", "dev"),
 		"build_time":  cast.ToInt(u.GetEnvWithDefault("BUILD_TIME", cast.ToString(time.Now().Unix()))),
+		"features":    features,
 	})
 }