pin golangci-lint version to latest available, fix reported errors

.github/workflows/ci-backend.yml

@@ -54,13 +54,13 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: latest
+          version: v1.58
           working-directory: backend/app
 
       - name: golangci-lint on example directory
         uses: golangci/golangci-lint-action@v3
         with:
-          version: latest
+          version: v1.58
           args: --config ../../.golangci.yml
           working-directory: backend/_example/memory_store
 

backend/.golangci.yml

@@ -1,15 +1,10 @@
 run:
   timeout: 5m
-  output:
-    format: tab
-  skip-dirs:
-    - vendor
 
 linters-settings:
   govet:
-    check-shadowing: true
-  maligned:
-    suggest-new: true
+    enable:
+      - shadow
   goconst:
     min-len: 2
     min-occurrences: 2
@@ -31,11 +26,13 @@ linters-settings:
 linters:
   enable:
     - bodyclose
-    - megacheck
+    - gosimple
+    - staticcheck
+    - unused
     - revive
     - govet
     - unconvert
-    - gas
+    - gosec
     - gocyclo
     - dupl
     - misspell
@@ -54,6 +51,8 @@ linters:
   disable-all: true
 
 issues:
+  exclude-dirs:
+    - vendor
   exclude-rules:
     - text: "at least one file in a package should have a package comment"
       linters:

backend/app/main.go

@@ -99,7 +99,7 @@ func getDump() string {
 	return string(stacktrace[:length])
 }
 
-// nolint:gochecknoinits // can't avoid it in this place
+//nolint:gochecknoinits // can't avoid it in this place
 func init() {
 	// catch SIGQUIT and print stack traces
 	sigChan := make(chan os.Signal, 1)

backend/app/store/engine/bolt.go

@@ -424,11 +424,11 @@ func (b *BoltDB) Close() error {
 }
 
 // Last returns up to max last comments for given siteID
-func (b *BoltDB) lastComments(siteID string, max int, since time.Time) (comments []store.Comment, err error) {
+func (b *BoltDB) lastComments(siteID string, maximum int, since time.Time) (comments []store.Comment, err error) {
 	comments = []store.Comment{}
 
-	if max > lastLimit || max == 0 {
-		max = lastLimit
+	if maximum > lastLimit || maximum == 0 {
+		maximum = lastLimit
 	}
 
 	bdb, err := b.db(siteID)
@@ -466,7 +466,7 @@ func (b *BoltDB) lastComments(siteID string, max int, since time.Time) (comments
 				continue
 			}
 			comments = append(comments, comment)
-			if len(comments) >= max {
+			if len(comments) >= maximum {
 				break
 			}
 		}

backend/app/store/formatter.go

@@ -57,14 +57,14 @@ func (f *CommentFormatter) FormatText(txt string, raw bool) (res string) {
 }
 
 // Shortens all the automatic links in HTML: auto link has equal "href" and "text" attributes.
-func (f *CommentFormatter) shortenAutoLinks(commentHTML string, max int) (resHTML string) {
+func (f *CommentFormatter) shortenAutoLinks(commentHTML string, maximum int) (resHTML string) {
 	doc, err := goquery.NewDocumentFromReader(strings.NewReader(commentHTML))
 	if err != nil {
 		return commentHTML
 	}
 	doc.Find("a").Each(func(_ int, s *goquery.Selection) {
 		if href, ok := s.Attr("href"); ok {
-			if href != s.Text() || len(href) < max+3 || max < 3 {
+			if href != s.Text() || len(href) < maximum+3 || maximum < 3 {
 				return
 			}
 			commentURL, e := url.Parse(href)
@@ -77,7 +77,7 @@ func (f *CommentFormatter) shortenAutoLinks(commentHTML string, max int) (resHTM
 				return
 			}
 
-			short := string([]rune(href)[:max-3])
+			short := string([]rune(href)[:maximum-3])
 			if len(short) < len(host) {
 				short = host
 			}