refactor: various linter offenses

apps/run.go

@@ -184,6 +184,7 @@ func Run(ctx context.Context, opts RunOpts) error {
 	if err != nil {
 		return errgo.Mask(err, errgo.Any)
 	}
+	defer res.Body.Close()
 	if res.StatusCode != http.StatusOK {
 		return errgo.Newf("Fail to attach: %s", res.Status)
 	}
@@ -264,7 +265,7 @@ func (runCtx *runContext) buildEnv(cmdEnv []string) (map[string]string, error) {
 
 	for _, cmdVar := range cmdEnv {
 		v := strings.SplitN(cmdVar, "=", 2)
-		if len(v) != 2 || len(v[0]) == 0 || len(v[1]) == 0 {
+		if len(v) != 2 || v[0] == "" || v[1] == "" {
 			return nil, fmt.Errorf("Invalid environment, format is '--env VARIABLE=value'")
 		}
 		env[v[0]] = v[1]
@@ -361,7 +362,7 @@ func (runCtx *runContext) connectToRunServer(ctx context.Context) (*http.Respons
 	}
 
 	res, err := conn.Do(req)
-	if err != httputil.ErrPersistEOF && err != nil {
+	if err != nil {
 		if err, ok := err.(*net.OpError); ok {
 			if err.Err.Error() == "record overflow" {
 				return nil, nil, errgo.Newf(

cmd/autocomplete/apps.go

@@ -64,7 +64,7 @@ func appsAutoCompleteCache() ([]*scalingo.App, error) {
 		return nil, errgo.Mask(err)
 	}
 
-	if time.Now().Sub(cache.CreatedAt).Seconds() > appsCacheDuration {
+	if time.Since(cache.CreatedAt).Seconds() > appsCacheDuration {
 		return nil, errExpiredCache
 	}
 

cmd/autocomplete/collaborators_add.go

@@ -34,7 +34,7 @@ func CollaboratorsAddAutoComplete(c *cli.Context) error {
 		return nil
 	}
 
-	var apiError error = nil
+	var apiError error
 	ch := make(chan string)
 	var wg sync.WaitGroup
 	wg.Add(len(apps))

cmd/autocomplete/scale.go

@@ -24,7 +24,7 @@ func ScaleAutoComplete(c *cli.Context) error {
 		return errgo.Mask(err)
 	}
 	for _, ct := range processes {
-		fmt.Println(fmt.Sprintf("%s:%d:%s", ct.Name, ct.Amount, ct.Size))
+		fmt.Printf("%s:%d:%s\n", ct.Name, ct.Amount, ct.Size)
 	}
 
 	return nil

cmd/stats.go

@@ -1,7 +1,7 @@
 package cmd
 
 import (
-	"github.com/urfave/cli/v2"
+	cli "github.com/urfave/cli/v2"
 
 	"github.com/Scalingo/cli/apps"
 	"github.com/Scalingo/cli/detect"
@@ -25,13 +25,15 @@ var (
 			currentApp := detect.CurrentApp(c)
 			if c.Args().Len() != 0 {
 				cli.ShowCommandHelp(c, "stats")
-			} else if err := apps.Stats(c.Context, currentApp, c.Bool("stream")); err != nil {
+				return nil
+			}
+
+			err := apps.Stats(c.Context, currentApp, c.Bool("stream"))
+			if err != nil {
 				errorQuit(err)
 			}
 			return nil
 		},
-		BashComplete: func(c *cli.Context) {
-			return
-		},
+		BashComplete: func(c *cli.Context) {},
 	}
 )

collaborators/remove.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"errors"
 
-	"gopkg.in/errgo.v1"
+	errgo "gopkg.in/errgo.v1"
 
 	"github.com/Scalingo/cli/config"
 	"github.com/Scalingo/cli/io"
@@ -26,9 +26,9 @@ func Remove(ctx context.Context, app, email string) error {
 		if err == notFound {
 			io.Error(email + " is not a collaborator of " + app + ".")
 			return nil
-		} else {
-			return errgo.Mask(err, errgo.Any)
 		}
+
+		return errgo.Mask(err, errgo.Any)
 	}
 	err = client.CollaboratorRemove(ctx, app, collaborator.ID)
 	if err != nil {

config/auth.go

@@ -185,9 +185,8 @@ func (a *CliAuthenticator) RemoveAuth() error {
 	if err != nil {
 		return errgo.Notef(err, "fail to get authentication service host")
 	}
-	if _, ok := c[authHost]; ok {
-		delete(c, authHost)
-	}
+
+	delete(c, authHost)
 
 	buffer, err := json.Marshal(&c)
 	if err != nil {

dists/download_stats.go

@@ -3,8 +3,9 @@ package main
 import (
 	"encoding/json"
 	"fmt"
-	"log"
 	"net/http"
+
+	"github.com/Scalingo/go-utils/logger"
 )
 
 type Asset struct {
@@ -20,15 +21,20 @@ type Repo struct {
 type Repos []Repo
 
 func main() {
+	log := logger.Default()
+
 	res, err := http.Get("https://api.github.com/repos/Scalingo/cli/releases")
 	if err != nil {
-		log.Fatalln(err)
+		log.WithError(err).Error("Fail to query the CLI releases from GitHub")
+		return
 	}
+	defer res.Body.Close()
 
 	var repos Repos
 	err = json.NewDecoder(res.Body).Decode(&repos)
 	if err != nil {
-		log.Fatalln(err)
+		log.WithError(err).Error("")
+		return
 	}
 
 	for _, repo := range repos {

go.mod

@@ -26,6 +26,7 @@ require (
 	github.com/urfave/cli/v2 v2.24.2
 	golang.org/x/crypto v0.7.0
 	golang.org/x/term v0.6.0
+	golang.org/x/text v0.8.0
 	gopkg.in/errgo.v1 v1.0.1
 )
 
@@ -63,7 +64,6 @@ require (
 	golang.org/x/mod v0.8.0 // indirect
 	golang.org/x/net v0.8.0 // indirect
 	golang.org/x/sys v0.6.0 // indirect
-	golang.org/x/text v0.8.0 // indirect
 	golang.org/x/tools v0.6.0 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect

logs/logs.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"context"
 	"fmt"
+	stdio "io"
 	"net/http"
 	"net/url"
 	"os"
@@ -14,8 +15,6 @@ import (
 	"time"
 	"unicode"
 
-	stdio "io"
-
 	"github.com/fatih/color"
 	"github.com/gorilla/websocket"
 	errgo "gopkg.in/errgo.v1"
@@ -76,7 +75,7 @@ func Dump(ctx context.Context, logsURL string, n int, filter string) error {
 	go func() {
 		defer wg.Done()
 		for bline := range buff {
-			colorizeLogs(string(bline))
+			colorizeLogs(bline)
 		}
 	}()
 

notifiers/create.go

@@ -103,9 +103,9 @@ func collaboratorUserIDs(ctx context.Context, c *scalingo.Client, app string, us
 		}
 		if id == "" {
 			return nil, errgo.Newf("no such collaborator: %v", u)
-		} else {
-			ids = append(ids, id)
 		}
+
+		ids = append(ids, id)
 	}
 
 	return ids, nil

notifiers/details.go

@@ -5,9 +5,10 @@ import (
 	"fmt"
 	"os"
 	"strconv"
-	"strings"
 
 	"github.com/olekukonko/tablewriter"
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
 	"gopkg.in/errgo.v1"
 
 	"github.com/Scalingo/cli/config"
@@ -38,22 +39,23 @@ func displayDetails(notifier scalingo.DetailedNotifier, types []scalingo.EventTy
 	t := tablewriter.NewWriter(os.Stdout)
 	// Basic data
 	data := [][]string{
-		[]string{"ID", notifier.GetID()},
-		[]string{"Type", string(notifier.GetType())},
-		[]string{"Name", notifier.GetName()},
-		[]string{"Enabled", strconv.FormatBool(notifier.IsActive())},
-		[]string{"Send all events", strconv.FormatBool(notifier.GetSendAllEvents())},
+		{"ID", notifier.GetID()},
+		{"Type", string(notifier.GetType())},
+		{"Name", notifier.GetName()},
+		{"Enabled", strconv.FormatBool(notifier.IsActive())},
+		{"Send all events", strconv.FormatBool(notifier.GetSendAllEvents())},
 	}
 	for _, v := range data {
 		t.Append(v)
 	}
 
 	// Type data
+	caser := cases.Title(language.English)
 	for key, value := range notifier.TypeDataMap() {
-		t.Append([]string{strings.Title(key), fmt.Sprintf("%v", value)})
+		t.Append([]string{caser.String(key), fmt.Sprintf("%v", value)})
 	}
 
-	//Selected events
+	// Selected events
 	if !notifier.GetSendAllEvents() {
 		if len(notifier.GetSelectedEventIDs()) <= 0 {
 			t.Append([]string{"Selected events", ""})

notifiers/update.go

@@ -30,9 +30,7 @@ func Update(ctx context.Context, app, ID string, params ProvisionParams) error {
 
 	// If there is no selected events, keep the existing ones
 	if len(params.SelectedEventNames) == 0 {
-		for _, id := range notifier.SelectedEventIDs {
-			params.SelectedEventIDs = append(params.SelectedEventIDs, id)
-		}
+		params.SelectedEventIDs = append([]string{}, notifier.SelectedEventIDs...)
 	} else {
 		for _, name := range params.SelectedEventNames {
 			for _, t := range eventTypes {

regionmigrations/refresher.go

@@ -158,7 +158,7 @@ func (r *Refresher) writeMigration(w *uilive.Writer, migration *scalingo.RegionM
 	defer w.Flush()
 
 	if errCount != 0 {
-		fmt.Fprintf(w.Newline(), color.RedString("Connection lost. Retrying (%v/%v)\n", errCount, maxErrors))
+		fmt.Fprint(w.Newline(), color.RedString("Connection lost. Retrying (%v/%v)\n", errCount, maxErrors))
 	}
 
 	if migration == nil {

term/password.go

@@ -13,7 +13,7 @@ func Password(prompt string) (string, error) {
 	bytePassword, err := term.ReadPassword(int(os.Stdin.Fd()))
 	if err != nil {
 		return "", errgo.Notef(err, "fail to read the password on stdin")
-	} else {
-		return string(bytePassword), nil
 	}
+
+	return string(bytePassword), nil
 }