优化结构

internal/server/gin.go

@@ -2,10 +2,7 @@ package server
 
 import (
 	"log/slog"
-	"mime"
 	"net/http"
-	"os"
-	"path"
 	"strings"
 	"time"
 
@@ -14,6 +11,7 @@ import (
 	"kra/internal/server/handler"
 	"kra/internal/server/middleware"
 	"kra/internal/server/router"
+	"kra/internal/server/staticfiles"
 	"kra/internal/service"
 	"kra/pkg/httpx"
 	platformmodule "kra/pkg/module"
@@ -70,7 +68,7 @@ func NewGinEngineWithRuntime(runtime *conf.Runtime, access *service.AccessContro
 		engine.GET(ws.Path(), handleWebSocket)
 	}
 	registerSwagger(engine, prefix, version, logger)
-	registerLocalStorage(engine, runtime)
+	staticfiles.Register(engine, runtime)
 	if logger != nil {
 		for _, route := range engine.Routes() {
 			logger.Info("router registered", "method", route.Method, "path", route.Path)
@@ -83,7 +81,7 @@ func NewGinEngineWithRuntime(runtime *conf.Runtime, access *service.AccessContro
 			handleWebSocket(c)
 			return
 		}
-		if serveLocalStorage(c, runtime) {
+		if staticfiles.Serve(c, runtime) {
 			return
 		}
 		httpx.Fail(c, "请求的接口不存在")
@@ -114,102 +112,3 @@ func NewGinServer(c *conf.Server, engine *gin.Engine) *kratoshttp.Server {
 	server.Server.MaxHeaderBytes = 1 << 20
 	return server
 }
-
-// serveLocalStorage resolves the local path for every request so a config
-// reload takes effect without rebuilding the Gin engine.
-func serveLocalStorage(c *gin.Context, runtime *conf.Runtime) bool {
-	config := runtime.Admin()
-	if config == nil || config.Local == nil || config.Local.StorePath == "" {
-		return false
-	}
-	prefix := "/" + strings.Trim(config.Local.PathPrefix, "/")
-	return serveLocalStorageAt(c, runtime, prefix)
-}
-
-func registerLocalStorage(engine *gin.Engine, runtime *conf.Runtime) {
-	config := runtime.Admin()
-	if config == nil || config.Local == nil || config.Local.StorePath == "" || strings.Trim(config.Local.PathPrefix, "/") == "" {
-		return
-	}
-	if config.Storage != nil && config.Storage.Type != "" && config.Storage.Type != "local" {
-		return
-	}
-	prefix := "/" + strings.Trim(config.Local.PathPrefix, "/")
-	if localStorageRouteConflicts(engine.Routes(), prefix) {
-		return
-	}
-	handler := func(c *gin.Context) {
-		if !serveLocalStorageAt(c, runtime, prefix) {
-			c.Status(http.StatusNotFound)
-		}
-	}
-	engine.GET(prefix+"/*filepath", handler)
-	engine.HEAD(prefix+"/*filepath", handler)
-}
-
-func localStorageRouteConflicts(routes []gin.RouteInfo, prefix string) bool {
-	staticRoot := strings.Split(strings.TrimPrefix(prefix, "/"), "/")[0]
-	for _, route := range routes {
-		if route.Method != http.MethodGet && route.Method != http.MethodHead {
-			continue
-		}
-		routeRoot := strings.Split(strings.TrimPrefix(route.Path, "/"), "/")[0]
-		if routeRoot == staticRoot {
-			return true
-		}
-	}
-	return false
-}
-
-func serveLocalStorageAt(c *gin.Context, runtime *conf.Runtime, prefix string) bool {
-	config := runtime.Admin()
-	if config == nil || config.Local == nil || config.Local.StorePath == "" {
-		return false
-	}
-	if config.Storage != nil && config.Storage.Type != "" && config.Storage.Type != "local" {
-		return false
-	}
-	if currentPrefix := "/" + strings.Trim(config.Local.PathPrefix, "/"); currentPrefix != prefix {
-		return false
-	}
-	if prefix == "/" || (c.Request.URL.Path != prefix && !strings.HasPrefix(c.Request.URL.Path, prefix+"/")) {
-		return false
-	}
-	c.Header("X-Content-Type-Options", "nosniff")
-	filename := path.Base(c.Request.URL.Path)
-	if !canServeUploadInline(filename) {
-		c.Header("Content-Disposition", mime.FormatMediaType("attachment", map[string]string{"filename": filename}))
-	}
-	http.StripPrefix(prefix, http.FileServer(filesOnly{FileSystem: http.Dir(config.Local.StorePath)})).ServeHTTP(c.Writer, c.Request)
-	return true
-}
-
-func canServeUploadInline(filename string) bool {
-	switch strings.ToLower(path.Ext(filename)) {
-	case ".jpg", ".jpeg", ".png", ".gif", ".webp", ".bmp", ".ico", ".avif",
-		".mp3", ".wav", ".ogg", ".m4a", ".flac", ".aac",
-		".mp4", ".webm", ".mov", ".avi", ".mkv":
-		return true
-	default:
-		return false
-	}
-}
-
-type filesOnly struct{ http.FileSystem }
-
-func (f filesOnly) Open(name string) (http.File, error) {
-	file, err := f.FileSystem.Open(name)
-	if err != nil {
-		return nil, err
-	}
-	info, statErr := file.Stat()
-	if statErr != nil {
-		_ = file.Close()
-		return nil, statErr
-	}
-	if info.IsDir() {
-		_ = file.Close()
-		return nil, os.ErrPermission
-	}
-	return file, nil
-}