add linter and add linting in ci

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+name: Lint
+# Lint runs golangci-lint over the entire repository
+# This workflow is run on every pull request and push to master
+# The `golangci` will pass without running if no *.{go, mod, sum} files have been changed.
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+jobs:
+  golangci:
+    name: golangci-lint
+    runs-on: ubuntu-latest
+    timeout-minutes: 6
+    steps:
+      - uses: actions/checkout@v2
+      - uses: technote-space/get-diff-action@v1
+        with:
+          SUFFIX_FILTER: |
+            .go
+            .mod
+            .sum
+      - uses: golangci/golangci-lint-action@master
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.27
+          args: --timeout 10m
+          github-token: ${{ secrets.github_token }}
+        if: "env.GIT_DIFF != ''"

.golangci.yml

@@ -0,0 +1,42 @@
+run:
+  tests: false
+#   # timeout for analysis, e.g. 30s, 5m, default is 1m
+#   timeout: 5m
+
+linters:
+  disable-all: true
+  enable:
+    - bodyclose
+    - deadcode
+    - depguard
+    - dogsled
+    # - errcheck
+    - goconst
+    - gocritic
+    - gofmt
+    - goimports
+    - golint
+    - gosec
+    - gosimple
+    - govet
+    - ineffassign
+    - interfacer
+    - maligned
+    - misspell
+    - nakedret
+    - prealloc
+    - scopelint
+    - staticcheck
+    - structcheck
+    - stylecheck
+    - typecheck
+    - unconvert
+    - unused
+    - unparam
+    - misspell
+    # - wsl
+    - nolintlint
+
+issues:
+  max-issues-per-linter: 10000
+  max-same-issues: 10000

Makefile

@@ -19,5 +19,10 @@ install: build ui
 
 cli: build
 	@go install -mod=readonly ./...
+
+lint:
+	golangci-lint run --out-format=tab --issues-exit-code=0
+	find . -name '*.go' -type f -not -path "./vendor*" -not -path "*.git*" | xargs gofmt -d -s
+.PHONY: lint
 
-.PHONY: all mod build ui install
+.PHONY: all mod build ui install

cmd/serve.go

@@ -41,7 +41,7 @@ func startServe(verbose bool) (*exec.Cmd, *exec.Cmd) {
 		log.Fatal("Error in initializing the chain. Please, check ./init.sh")
 	}
 	fmt.Printf("🎨 Created a web front-end.\n")
-	cmdTendermint := exec.Command(fmt.Sprintf("%[1]vd", appName), "start")
+	cmdTendermint := exec.Command(fmt.Sprintf("%[1]vd", appName), "start") //nolint:gosec // Subprocess launched with function call as argument or cmd arguments
 	if verbose {
 		fmt.Printf("🌍 Running a server at http://localhost:26657 (Tendermint)\n")
 		cmdTendermint.Stdout = os.Stdout
@@ -51,7 +51,7 @@ func startServe(verbose bool) (*exec.Cmd, *exec.Cmd) {
 	if err := cmdTendermint.Start(); err != nil {
 		log.Fatal(fmt.Sprintf("Error in running %[1]vd start", appName), err)
 	}
-	cmdREST := exec.Command(fmt.Sprintf("%[1]vcli", appName), "rest-server")
+	cmdREST := exec.Command(fmt.Sprintf("%[1]vcli", appName), "rest-server") //nolint:gosec // Subprocess launched with function call as argument or cmd arguments
 	if verbose {
 		fmt.Printf("🌍 Running a server at http://localhost:1317 (LCD)\n")
 		cmdREST.Stdout = os.Stdout
@@ -86,7 +86,7 @@ var serveCmd = &cobra.Command{
 		go func() {
 			for {
 				select {
-				case _ = <-w.Event:
+				case <-w.Event:
 					cmdr.Process.Kill()
 					cmdt.Process.Kill()
 					cmdt, cmdr = startServe(verbose)

templates/app/new.go

@@ -1,7 +1,6 @@
 package app
 
 import (
-	"fmt"
 	"strings"
 
 	"github.com/gobuffalo/genny"
@@ -20,10 +19,9 @@ func New(opts *Options) (*genny.Generator, error) {
 	ctx.Set("ModulePath", opts.ModulePath)
 	ctx.Set("AppName", opts.AppName)
 	ctx.Set("Denom", opts.Denom)
-	ctx.Set("title", func(s string) string {
-		return strings.Title(s)
-	})
+	ctx.Set("title", strings.Title)
+
 	g.Transformer(plushgen.Transformer(ctx))
-	g.Transformer(genny.Replace("{{appName}}", fmt.Sprintf("%s", opts.AppName)))
+	g.Transformer(genny.Replace("{{appName}}", opts.AppName))
 	return g, nil
 }

templates/typed/new.go

@@ -32,9 +32,7 @@ func New(opts *Options) (*genny.Generator, error) {
 	ctx.Set("TypeName", opts.TypeName)
 	ctx.Set("ModulePath", opts.ModulePath)
 	ctx.Set("Fields", opts.Fields)
-	ctx.Set("title", func(s string) string {
-		return strings.Title(s)
-	})
+	ctx.Set("title", strings.Title)
 	ctx.Set("strconv", func() bool {
 		strconv := false
 		for _, field := range opts.Fields {
@@ -45,15 +43,14 @@ func New(opts *Options) (*genny.Generator, error) {
 		return strconv
 	})
 	g.Transformer(plushgen.Transformer(ctx))
-	g.Transformer(genny.Replace("{{appName}}", fmt.Sprintf("%s", opts.AppName)))
-	g.Transformer(genny.Replace("{{typeName}}", fmt.Sprintf("%s", opts.TypeName)))
-	g.Transformer(genny.Replace("{{TypeName}}", fmt.Sprintf("%s", strings.Title(opts.TypeName))))
+	g.Transformer(genny.Replace("{{appName}}", opts.AppName))
+	g.Transformer(genny.Replace("{{typeName}}", opts.TypeName))
+	g.Transformer(genny.Replace("{{TypeName}}", opts.TypeName))
 	return g, nil
 }
 
 const placeholder = "// this line is used by starport scaffolding"
 const placeholder2 = "// this line is used by starport scaffolding # 2"
-const placeholder3 = "// this line is used by starport scaffolding # 3"
 const placeholder4 = "<!-- this line is used by starport scaffolding # 4 -->"
 
 func handlerModify(opts *Options) genny.RunFn {
@@ -230,10 +227,10 @@ func uiIndexModify(opts *Options) genny.RunFn {
 			<div class="type-%[1]v-list-%[1]v"></div>
       <h3>Create a new %[1]v:</h3>`, opts.TypeName)
 		for _, field := range opts.Fields {
-			template = template + fmt.Sprintf(`
+			template += fmt.Sprintf(`
 			<input placeholder="%[1]v" class="type-%[2]v-field-%[1]v" type="text" />`, field.Name, opts.TypeName)
 		}
-		template = template + fmt.Sprintf(`
+		template += fmt.Sprintf(`
 			<button class="type-%[1]v-create">Create %[1]v</button>
 		`, opts.TypeName) + "  " + placeholder4
 		content := strings.Replace(f.String(), placeholder4, template, 1)
@@ -251,7 +248,7 @@ func uiScriptModify(opts *Options) genny.RunFn {
 		}
 		fields := ""
 		for _, field := range opts.Fields {
-			fields = fields + fmt.Sprintf("\"%[1]v\", ", field.Name)
+			fields += fmt.Sprintf("\"%[1]v\", ", field.Name)
 		}
 		template := `%[1]v
 	["%[2]v", [%[3]v]],`