finish upload avatar

backend/api/file.go

@@ -0,0 +1,27 @@
+package api
+
+import (
+	"net/http"
+
+	"github.com/fumiama/paper-manager/backend/global"
+	"github.com/fumiama/paper-manager/backend/utils"
+	"github.com/sirupsen/logrus"
+)
+
+// FileHandler serves contents in global.FileFolder
+func FileHandler(w http.ResponseWriter, r *http.Request) {
+	if !utils.IsMethod("GET", w, r) {
+		return
+	}
+	if r.URL.Path[0] != '/' {
+		r.URL.Path = "/" + r.URL.Path
+	}
+	fn := r.URL.Path[6:]
+	if fn == "" {
+		http.Error(w, "400 Bad Request: empty path", http.StatusBadRequest)
+		return
+	}
+	name := global.FileFolder + fn
+	logrus.Infoln("[file.FileHandler] serve", name)
+	http.ServeFile(w, r, name)
+}