From f513f9ecf23d053ee9b89b3b5e4888d2b6878d2e Mon Sep 17 00:00:00 2001
From: Camila Macedo <cmacedo@redhat.com>
Date: Thu, 22 Oct 2020 11:59:48 -0300
Subject: [PATCH] :sparkles: not allow to init the project in a directory that
 is not cleaned

---
 pkg/plugin/v3/init.go | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/pkg/plugin/v3/init.go b/pkg/plugin/v3/init.go
index 11adb7ddef5..4a68da2a336 100644
--- a/pkg/plugin/v3/init.go
+++ b/pkg/plugin/v3/init.go
@@ -18,6 +18,7 @@ package v3
 
 import (
 	"fmt"
+	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -111,6 +112,11 @@ func (p *initPlugin) Validate() error {
 		}
 	}
 
+	// Check if the current directory has not files which does not allow init the project
+	if err := checkDir(); err != nil {
+		return err
+	}
+
 	// Check if the project name is a valid k8s namespace (DNS 1123 label).
 	if p.config.ProjectName == "" {
 		dir, err := os.Getwd()
@@ -167,3 +173,24 @@ func (p *initPlugin) PostScaffold() error {
 	fmt.Printf("Next: define a resource with:\n$ %s create api\n", p.commandName)
 	return nil
 }
+
+// checkDir will return error if the current directory has files which are
+// not the .gitignore and the go.mod. Note that, it is expected that the
+// directory to scaffold the project is cleaned. Otherwise, it might face issues
+// to do the scaffold. The go.mod is allowed because user might run
+// go mod init before use the plugin it for not be required inform
+// the go module via the repo --flag.
+func checkDir() error {
+	files, err := ioutil.ReadDir(".")
+	if err != nil {
+		return err
+	}
+
+	for _, file := range files {
+		if file.Name() != "go.mod" && file.Name() != ".gitignore" {
+			return fmt.Errorf("this directory has files already. " +
+				"Only the go.mod and .gitignore are allowed before the init.")
+		}
+	}
+	return nil
+}