feat(middleware): update context definition

- add changable property File
- add changable property Item

Author: marjune163

src/middleware/context.go

@@ -3,6 +3,7 @@ package middleware
 import (
 	"mjpclab.dev/ghfs/src/serverLog"
 	"mjpclab.dev/ghfs/src/user"
+	"os"
 )
 
 type Context struct {
@@ -28,6 +29,9 @@ type Context struct {
 
 	Status *int
 
+	File     **os.File
+	FileInfo *os.FileInfo
+
 	Users  *user.List
 	Logger *serverLog.Logger
 }

src/serverHandler/aliasHandler.go

@@ -105,9 +105,10 @@ func (h *aliasHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	// data
 	data, fsPath := h.getResponseData(r)
 	h.logErrors(data.errors)
-	file := data.File
-	if file != nil {
-		defer file.Close()
+	if data.File != nil {
+		defer func() {
+			data.File.Close()
+		}()
 	}
 
 	if h.applyMiddlewares(h.inMiddlewares, w, r, data, fsPath) {
@@ -168,10 +169,9 @@ func (h *aliasHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// final process
-	item := data.Item
 	if data.wantJson {
 		h.json(w, r, data)
-	} else if shouldServeAsContent(file, item) {
+	} else if shouldServeAsContent(data.File, data.Item) {
 		h.content(w, r, data)
 	} else {
 		h.page(w, r, data)

src/serverHandler/middleware.go

@@ -37,6 +37,13 @@ func (h *aliasHandler) applyMiddlewares(mids []middleware.Middleware, w http.Res
 		Logger: h.logger,
 	}
 
+	if data.File != nil {
+		context.File = &data.File
+	}
+	if data.Item != nil {
+		context.FileInfo = &data.Item
+	}
+
 	for i := range mids {
 		result := mids[i](w, r, context)
 		if result == middleware.Outputted {