Add init command to initialize a hello world sample API with GoFr (#3)

bootstrap/init.go

@@ -0,0 +1,78 @@
+package bootstrap
+
+import (
+	"fmt"
+	"os"
+	"text/template"
+
+	"gofr.dev/pkg/gofr"
+)
+
+const (
+	modContent = `module {{ .Module }}
+
+go 1.22.4
+
+require gofr.dev v{{ .GofrVersion }}
+`
+	mainContent = `package main
+
+import (
+	"gofr.dev/pkg/gofr"
+)
+
+func main() {
+	app := gofr.New()
+
+	app.GET("/hello", func(ctx *gofr.Context) (interface{}, error) {
+		return "Hello World!", nil
+	})
+
+	app.Run()
+}
+`
+	fileMode = 0644
+)
+
+type modInfo struct {
+	Module      string
+	GofrVersion string
+}
+
+func Create(ctx *gofr.Context) (interface{}, error) {
+	name := ctx.Param("name")
+	gofrVersion := ctx.Param("gofr")
+
+	if gofrVersion == "" {
+		gofrVersion = "1.17.0"
+	}
+
+	modFile, err := os.OpenFile("go.mod", os.O_CREATE|os.O_WRONLY, fileMode)
+	if err != nil {
+		return nil, err
+	}
+
+	t, err := template.New("go-mod").Parse(modContent)
+	if err != nil {
+		return nil, err
+	}
+
+	err = t.Execute(modFile, modInfo{Module: name, GofrVersion: gofrVersion})
+	if err != nil {
+		return nil, err
+	}
+
+	fmt.Println("Note: Please do go mod tidy to sync the dependencies of your project")
+
+	mainFile, err := os.OpenFile("main.go", os.O_CREATE|os.O_WRONLY, fileMode)
+	if err != nil {
+		return nil, err
+	}
+
+	_, err = mainFile.WriteString(mainContent)
+	if err != nil {
+		return nil, err
+	}
+
+	return "Successfully initialized project " + name, nil
+}

go.sum

@@ -128,6 +128,8 @@ github.com/klauspost/compress v1.17.8 h1:YcnTYrq7MikUT7k0Yb5eceMmALQPYBW/Xltxn0N
 github.com/klauspost/compress v1.17.8/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=

main.go

@@ -3,12 +3,15 @@ package main
 import (
 	"gofr.dev/pkg/gofr"
 
+	"gofr.dev/gofr-cli/bootstrap"
 	"gofr.dev/gofr-cli/migration"
 )
 
 func main() {
 	cli := gofr.NewCMD()
 
+	cli.SubCommand("init", bootstrap.Create)
+
 	cli.SubCommand("version",
 		func(*gofr.Context) (interface{}, error) {
 			return CLIVersion, nil

main_test.go

@@ -5,16 +5,12 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+
 	"gofr.dev/pkg/gofr/testutil"
 )
 
 func Test_Main_Version(t *testing.T) {
-	old := os.Args
-	os.Args = []string{"gofr-cli", "version"}
-
-	t.Cleanup(func() {
-		os.Args = old
-	})
+	setArgs(t, "version")
 
 	// test util replaces the stdout with a buffer and returns us
 	// any output that is printed on the stdout
@@ -24,3 +20,15 @@ func Test_Main_Version(t *testing.T) {
 
 	assert.Contains(t, out, "dev")
 }
+
+func setArgs(t *testing.T, args ...string) {
+	t.Helper()
+
+	oldArgs := os.Args
+
+	os.Args = append([]string{"gofr-cli"}, args...)
+
+	t.Cleanup(func() {
+		os.Args = oldArgs
+	})
+}