Some linter cleanup

.golangci.yml

@@ -40,8 +40,44 @@ linters:
     - unconvert
     - unparam
     - whitespace
-
+    - nakedret
+    - cyclop
+    - gosimple
+    - varcheck
+    - unused
+    - deadcode
+    - exportloopref
+    - gocritic
+    - forbidigo
+    - unparam
+    - wastedassign
 linters-settings:
   govet:
     disable:
       - composite
+
+  cyclop:
+    # the maximal code complexity to report. default is 10. eventually work our way to that.
+    max-complexity: 20
+    # the max average package complexity. If it's higher than 0.0 (float) the check is enabled (default 0.0)
+    package-average: 0.0
+    # should ignore tests
+    skip-tests: true  
+
+  gosimple:
+    # Select the Go version to target. The default is '1.13'.
+    go: "1.17"
+    # https://staticcheck.io/docs/options#checks
+    checks: ["all"]
+
+  gocritic:
+    disabled-checks:
+      - ifElseChain
+      - exitAfterDefer
+
+  forbidigo:
+    # Forbid the following identifiers (identifiers are written using regexp):
+    forbid:
+        # Logging via Print bypasses our logging framework.
+      - ^(fmt\.Print(|f|ln)|print|println)
+      - ^panic.*$

core/chat/chatclient.go

@@ -118,7 +118,7 @@ func (c *Client) readPump() {
 			continue
 		}
 
-		message = bytes.TrimSpace(bytes.Replace(message, newline, space, -1))
+		message = bytes.TrimSpace(bytes.ReplaceAll(message, newline, space))
 		c.handleEvent(message)
 	}
 }

core/chat/events.go

@@ -111,6 +111,6 @@ func (s *Server) userMessageSent(eventData chatClientEvent) {
 
 	SaveUserMessage(event)
 
-	eventData.client.MessageCount = eventData.client.MessageCount + 1
+	eventData.client.MessageCount++
 	_lastSeenCache[event.User.ID] = time.Now()
 }

core/chat/utils.go

@@ -2,6 +2,7 @@ package chat
 
 import (
 	"syscall"
+
 	log "github.com/sirupsen/logrus"
 )
 

core/transcoder/thumbnailGenerator.go

@@ -132,10 +132,8 @@ func makeAnimatedGifPreview(sourceFile string, outputFile string) {
 	ffmpegCmd := strings.Join(animatedGifFlags, " ")
 	if _, err := exec.Command("sh", "-c", ffmpegCmd).Output(); err != nil {
 		log.Errorln(err)
-	} else {
 		// rename temp file
-		if err := os.Rename(outputFileTemp, outputFile); err != nil {
+	} else if err := os.Rename(outputFileTemp, outputFile); err != nil {
 		log.Errorln(err)
 	}
 }
-}

core/transcoder/transcoder.go

@@ -284,9 +284,8 @@ func (t *Transcoder) getVariantsString() string {
 
 	for _, variant := range t.variants {
 		variantsCommandFlags = variantsCommandFlags + " " + variant.getVariantString(t)
-		singleVariantMap := ""
+		singleVariantMap := fmt.Sprintf("v:%d,a:%d ", variant.index, variant.index)
-		singleVariantMap = fmt.Sprintf("v:%d,a:%d ", variant.index, variant.index)
+		variantsStreamMaps += singleVariantMap
-		variantsStreamMaps = variantsStreamMaps + singleVariantMap
 	}
 	variantsCommandFlags = variantsCommandFlags + " " + variantsStreamMaps + "\""
 

utils/performanceTimer.go

@@ -52,7 +52,7 @@ func removeHighValue(values []float64) []float64 {
 func avg(values []float64) float64 {
 	total := 0.0
 	for _, number := range values {
-		total = total + number
+		total += number
 	}
 	average := total / float64(len(values))
 	return average