From b88260ff14b22fa391c858e4dbdd6a035cd7dfa2 Mon Sep 17 00:00:00 2001
From: Andrew-71 <andrey.nikitin.vladimirovich@gmail.com>
Date: Sat, 30 Mar 2024 14:33:39 +0300
Subject: [PATCH] Truncate and trim files when saving

---
 files.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/files.go b/files.go
index 252216d..0a306ed 100644
--- a/files.go
+++ b/files.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bytes"
 	"errors"
 	"log/slog"
 	"os"
@@ -32,14 +33,14 @@ func ReadFile(filename string) ([]byte, error) {
 // SaveFile Writes request's contents to a file
 func SaveFile(filename string, contents []byte) error {
 	filename = "data/" + filename + ".txt"
-	f, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY, 0644)
+	f, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
 	if err != nil {
 		slog.Error("error opening/making file",
 			"error", err,
 			"file", filename)
 		return err
 	}
-	if _, err := f.Write(contents); err != nil {
+	if _, err := f.Write(bytes.TrimSpace(contents)); err != nil {
 		slog.Error("error writing to file",
 			"error", err,
 			"file", filename)