Order files before uninstall

Fixes #149

pkg/helpers/file.go

@@ -24,6 +24,37 @@ import (
 	copy "github.com/otiai10/copy"
 )
 
+func OrderFiles(target string, files []string) ([]string, []string) {
+
+	var newFiles []string
+	var notPresent []string
+
+	for _, f := range files {
+		target := filepath.Join(target, f)
+		fi, err := os.Lstat(target)
+		if err != nil {
+			notPresent = append(notPresent, f)
+			continue
+		}
+		if m := fi.Mode(); !m.IsDir() {
+			newFiles = append(newFiles, f)
+		}
+	}
+
+	for _, f := range files {
+		target := filepath.Join(target, f)
+		fi, err := os.Lstat(target)
+		if err != nil {
+			continue
+		}
+		if m := fi.Mode(); m.IsDir() {
+			newFiles = append(newFiles, f)
+		}
+	}
+
+	return newFiles, notPresent
+}
+
 func ListDir(dir string) ([]string, error) {
 	content := []string{}
 

pkg/helpers/file_test.go

@@ -16,6 +16,10 @@
 package helpers_test
 
 import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
 	. "github.com/mudler/luet/pkg/helpers"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
@@ -28,4 +32,33 @@ var _ = Describe("Helpers", func() {
 			Expect(Exists("../../tests/fixtures/buildtree/app-admin/enman/1.4.0/build.yaml.not.exists")).To(BeFalse())
 		})
 	})
+
+	Context("Orders dir and files correctly", func() {
+		It("puts files first and folders at end", func() {
+			testDir, err := ioutil.TempDir(os.TempDir(), "test")
+			Expect(err).ToNot(HaveOccurred())
+			defer os.RemoveAll(testDir)
+
+			err = ioutil.WriteFile(filepath.Join(testDir, "foo"), []byte("test\n"), 0644)
+			Expect(err).ToNot(HaveOccurred())
+
+			err = ioutil.WriteFile(filepath.Join(testDir, "baz"), []byte("test\n"), 0644)
+			Expect(err).ToNot(HaveOccurred())
+
+			err = os.MkdirAll(filepath.Join(testDir, "bar"), 0755)
+			Expect(err).ToNot(HaveOccurred())
+			err = ioutil.WriteFile(filepath.Join(testDir, "bar", "foo"), []byte("test\n"), 0644)
+			Expect(err).ToNot(HaveOccurred())
+
+			err = os.MkdirAll(filepath.Join(testDir, "baz2"), 0755)
+			Expect(err).ToNot(HaveOccurred())
+			err = ioutil.WriteFile(filepath.Join(testDir, "baz2", "foo"), []byte("test\n"), 0644)
+			Expect(err).ToNot(HaveOccurred())
+
+			ordered, notExisting := OrderFiles(testDir, []string{"bar", "baz", "bar/foo", "baz2", "foo", "baz2/foo", "notexisting"})
+
+			Expect(ordered).To(Equal([]string{"baz", "bar/foo", "foo", "baz2/foo", "bar", "baz2"}))
+			Expect(notExisting).To(Equal([]string{"notexisting"}))
+		})
+	})
 })