From a04adf7fa13a283b8c14ae386769f76695cc1f44 Mon Sep 17 00:00:00 2001
From: "Alexander \"Arav\" Andreev" <me@arav.su>
Date: Wed, 24 May 2023 23:20:21 +0400
Subject: [PATCH] Replaced http.Error with 50x errors with web.Error50x().

---
 internal/http/handlers.go | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/internal/http/handlers.go b/internal/http/handlers.go
index fa8570c..68f70dc 100644
--- a/internal/http/handlers.go
+++ b/internal/http/handlers.go
@@ -75,7 +75,8 @@ func (h *UploadHandlers) Upload(w http.ResponseWriter, r *http.Request) {
 	if err != nil {
 		log.Println("failed to open incoming file:", err)
 		w.WriteHeader(http.StatusInternalServerError)
-		http.Error(w, "Error reading an incoming file.", http.StatusInternalServerError)
+		web.Error50x(utils.MainSite(r.Host), http.StatusInternalServerError,
+			"Error reading an incoming file.", w)
 		return
 	}
 	defer func() {
@@ -94,7 +95,8 @@ func (h *UploadHandlers) Upload(w http.ResponseWriter, r *http.Request) {
 	s256 := sha256.New()
 	if _, err := io.Copy(s256, f); err != nil {
 		log.Println("failed to compute a SHA-256 hash:", err)
-		http.Error(w, "A hash for the file cannot be computed.", http.StatusInternalServerError)
+		web.Error50x(utils.MainSite(r.Host), http.StatusInternalServerError,
+			"A hash for the file cannot be computed.", w)
 		return
 	}
 
@@ -111,7 +113,8 @@ func (h *UploadHandlers) Upload(w http.ResponseWriter, r *http.Request) {
 		fDst, err := os.Create(fPath)
 		if err != nil {
 			log.Println("failed to open file for writing", err)
-			http.Error(w, "File cannot be written.", http.StatusInternalServerError)
+			web.Error50x(utils.MainSite(r.Host), http.StatusInternalServerError,
+				"File cannot be written.", w)
 			return
 		}
 		defer fDst.Close()
@@ -127,7 +130,8 @@ func (h *UploadHandlers) Upload(w http.ResponseWriter, r *http.Request) {
 		_, err = io.Copy(fDst, f)
 		if err != nil {
 			log.Println("failed to copy uploaded file to destination:", err)
-			http.Error(w, "Failed to copy uploaded file to the storage.", http.StatusInternalServerError)
+			web.Error50x(utils.MainSite(r.Host), http.StatusInternalServerError,
+				"Failed to copy uploaded file to the storage.", w)
 			return
 		}
 
@@ -174,7 +178,8 @@ func (h *UploadHandlers) Download(w http.ResponseWriter, r *http.Request) {
 	fd, err := os.Open(path)
 	if err != nil {
 		log.Println("failed to open file to read:", err)
-		http.Error(w, "Failed to open file to read.", http.StatusInternalServerError)
+		web.Error50x(utils.MainSite(r.Host), http.StatusInternalServerError,
+			"Failed to open file to read.", w)
 		return
 	}
 	defer fd.Close()
@@ -206,7 +211,8 @@ func (h *UploadHandlers) Delete(w http.ResponseWriter, r *http.Request) {
 	err = os.Remove(path)
 	if err != nil {
 		log.Println("failed to remove a file:", err)
-		http.Error(w, "Failed to remove a file.", http.StatusInternalServerError)
+		web.Error50x(utils.MainSite(r.Host), http.StatusInternalServerError,
+			"Failed to remove a file.", w)
 		return
 	}