From c721702b4a8a722eb05ac2bef060eefafdea43de Mon Sep 17 00:00:00 2001
From: uan <fspinardi08@gmail.com>
Date: Thu, 7 Aug 2025 21:12:01 +0200
Subject: [PATCH] added compress.go file and added logs compression when too
 large

---
 miniws/compress.go | 79 ++++++++++++++++++++++++++++++++++++++++++++++
 miniws/logger.go   | 33 +++++++++++++------
 2 files changed, 103 insertions(+), 9 deletions(-)
 create mode 100644 miniws/compress.go

diff --git a/miniws/compress.go b/miniws/compress.go
new file mode 100644
index 0000000..5fb683f
--- /dev/null
+++ b/miniws/compress.go
@@ -0,0 +1,79 @@
+package miniws
+
+import (
+	"archive/tar"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+)
+
+type compress struct{}
+
+// takes a file path, compresses the file into .tar.gz format
+// creating the archive in the same directory with the same base name.
+func (c *compress) CompressFile(filePath string) error {
+	srcFile, err := os.Open(filePath)
+	if err != nil {
+		return fmt.Errorf("opening source file: %w", err)
+	}
+	defer srcFile.Close()
+
+	// destination file path: same dir, same base name with .tar.gz
+	dir := filepath.Dir(filePath)
+	base := filepath.Base(filePath)
+	destName := base + ".tar.gz"
+	destPath := filepath.Join(dir, destName)
+
+	destFile, err := os.Create(destPath)
+	if err != nil {
+		return fmt.Errorf("creating dest file: %w", err)
+	}
+
+	defer func() {
+		if cerr := destFile.Close(); cerr != nil && err == nil {
+			err = fmt.Errorf("closing dest file: %w", cerr)
+		}
+	}()
+
+	// gzip writer
+	gzWriter := gzip.NewWriter(destFile)
+	defer func() {
+		if cerr := gzWriter.Close(); cerr != nil && err == nil {
+			err = fmt.Errorf("closing gzip writer: %w", cerr)
+		}
+	}()
+
+	// tar writer
+	tarWriter := tar.NewWriter(gzWriter)
+	defer func() {
+		if cerr := tarWriter.Close(); cerr != nil && err == nil {
+			err = fmt.Errorf("closing tar writer: %w", cerr)
+		}
+	}()
+
+	// Get file info for header
+	fileInfo, err := srcFile.Stat()
+	if err != nil {
+		return fmt.Errorf("getting file info: %w", err)
+	}
+
+	// Prepare tar header
+	head := &tar.Header{
+		Name:    base,
+		Size:    fileInfo.Size(),
+		Mode:    int64(fileInfo.Mode().Perm()),
+		ModTime: fileInfo.ModTime(),
+	}
+	if err := tarWriter.WriteHeader(head); err != nil {
+		return fmt.Errorf("writing tar header: %w", err)
+	}
+
+	// Copy file data into tar
+	if _, err := io.Copy(tarWriter, srcFile); err != nil {
+		return fmt.Errorf("writing file data to tar: %w", err)
+	}
+
+	return nil
+}
diff --git a/miniws/logger.go b/miniws/logger.go
index 4c5dca3..d6af29e 100644
--- a/miniws/logger.go
+++ b/miniws/logger.go
@@ -2,14 +2,13 @@ package miniws
 
 import (
 	"fmt"
-	"log"
 	"os"
 
 	"github.com/google/uuid"
 )
 
 const (
-	FLAGS_LOG_OPEN    int         = os.O_APPEND | os.O_WRONLY | os.O_CREATE
+	FLAGS_LOG_OPEN    int         = os.O_APPEND | os.O_RDWR | os.O_CREATE
 	FLAGS_CONFIG_OPEN int         = os.O_RDONLY | os.O_CREATE
 	PERMS_LOG_OPEN    os.FileMode = os.ModeType | os.ModePerm
 	PERMS_CONFIG_OPEN os.FileMode = os.ModeType | os.ModePerm
@@ -56,8 +55,8 @@ func (l *Logger) logError(str string) {
 func (l *Logger) writeToLogFileAndRenameIfBig(filename, content string) {
 	file, err := os.OpenFile(ensureSlashSuffix(l.logFolder)+filename, FLAGS_LOG_OPEN, PERMS_LOG_OPEN)
 
-	if err != nil {
-		log.Println("couldn't open log access file at", ensureSlashSuffix(l.logFolder)+filename)
+	if l.logIfError(err) {
+		return
 	}
 
 	defer file.Close()
@@ -65,14 +64,30 @@ func (l *Logger) writeToLogFileAndRenameIfBig(filename, content string) {
 
 	fileinfo, err := file.Stat()
 
-	if err != nil {
-		log.Println("Error reading access file at", ensureSlashSuffix(l.logFolder)+filename)
+	if l.logIfError(err) {
+		return
 	}
 
 	if fileinfo.Size() > l.maxLogBytes {
-		defer os.Rename(ensureSlashSuffix(
-			l.logFolder)+fileinfo.Name(),
-			ensureSlashSuffix(l.logFolder)+fileinfo.Name()+"."+uuid.NewString(),
+
+		var renamedFiledPath string = ensureSlashSuffix(l.logFolder) + fileinfo.Name() + "." + uuid.NewString()
+
+		err_rename := os.Rename(
+			ensureSlashSuffix(l.logFolder)+fileinfo.Name(),
+			renamedFiledPath,
 		)
+
+		if l.logIfError(err_rename) {
+			return
+		}
+
+		compress := &compress{}
+		err_compress := compress.CompressFile(renamedFiledPath)
+
+		if l.logIfError(err_compress) {
+			return
+		}
+
+		defer os.Remove(renamedFiledPath)
 	}
 }