fix: fix non helmified projects (#27)

* fix: fix non helmified projects

* refactor: apply PR's comments

internal/models/base/base_analyzer.go

@@ -29,13 +29,13 @@ func (a *BaseAnalyzer) GetExtraArgumentDefinitions() []models.ArgumentDefinition
 	return []models.ArgumentDefinition{}
 }
 
-// CompareVersions Returns 0 if the two version are equal, negative if left < right, and positive if left > right.
-func (a *BaseAnalyzer) CompareVersions(left string, right string) int {
-	if len(left) > 0 && left[0] != 'v' {
-		left = "v" + left
+// CompareVersions Returns 0 if the two version are equal, negative if oldVersion < newVersion, and positive if oldVersion > newVersion.
+func (a *BaseAnalyzer) CompareVersions(oldVersion string, newVersion string) int {
+	if len(oldVersion) > 0 && oldVersion[0] != 'v' {
+		oldVersion = "v" + oldVersion
 	}
-	if len(right) > 0 && right[0] != 'v' {
-		right = "v" + right
+	if len(newVersion) > 0 && newVersion[0] != 'v' {
+		newVersion = "v" + newVersion
 	}
-	return semver.Compare(left, right)
+	return semver.Compare(oldVersion, newVersion)
 }

internal/models/version_analyzer.go

@@ -5,5 +5,5 @@ type VersionAnalyzer interface {
 	ChangeNeedsVersionUpdate(changedFilePaths []string, extraArgs *ArgumentValues) bool
 	ReadVersion(projectRootPath string, extraArgs *ArgumentValues) (string, error)
 	GetExtraArgumentDefinitions() []ArgumentDefinition
-	CompareVersions(left string, right string) int
+	CompareVersions(oldVersion string, newVersion string) int
 }

internal/models/versionanalyzers/helm_version_analyzer.go

@@ -1,6 +1,8 @@
 package versionanalyzers
 
 import (
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
 	"gopkg.in/yaml.v3"
 	"os"
 	"path/filepath"
@@ -57,6 +59,9 @@ type helmChart struct {
 
 func (a *HelmVersionAnalyzer) ReadVersion(projectRootDir string, extraArgs *models.ArgumentValues) (string, error) {
 	rootDir := filepath.Join(projectRootDir, *(*extraArgs)[HelmArgumentKeyRootDir])
+	if _, err := os.Stat(filepath.Join(rootDir, "Chart.yaml")); errors.Is(err, os.ErrNotExist) {
+		return "", nil
+	}
 	chartFileContent, err := os.ReadFile(filepath.Join(rootDir, "Chart.yaml"))
 	if err != nil {
 		return "", err
@@ -72,3 +77,11 @@ func (a *HelmVersionAnalyzer) ReadVersion(projectRootDir string, extraArgs *mode
 func (a *HelmVersionAnalyzer) GetName() string {
 	return versionAnalyzerNameHelm
 }
+
+func (a *HelmVersionAnalyzer) CompareVersions(oldVersion, newVersion string) int {
+	if oldVersion == "" {
+		logrus.Info("old revision has no 'Chart.yaml' file")
+		return -1
+	}
+	return a.BaseAnalyzer.CompareVersions(oldVersion, newVersion)
+}

internal/models/versionanalyzers/helm_version_analyzer_test.go

@@ -45,12 +45,14 @@ version: 1.2.3
 # It is recommended to use it with quotes.
 appVersion: "0.1.0"
 `
-	utils.PanicError(os.WriteFile("./Chart.yaml", []byte(chartContent), 0644))
+	s.NoError(os.WriteFile("./Chart.yaml", []byte(chartContent), 0644))
+	s.NoError(os.MkdirAll("./test-dir", os.ModePerm))
 	s.helmVersionAnalyzer = HelmVersionAnalyzer{}
 }
 
 func (s *HelmVersionAnalyzerTestSuite) TearDownTest() {
-	utils.PanicError(os.Remove("./Chart.yaml"))
+	s.NoError(os.Remove("./Chart.yaml"))
+	s.NoError(os.RemoveAll("./test-dir"))
 }
 
 func (s *HelmVersionAnalyzerTestSuite) TestRepositoryContainsHelmVersionAnalyzer() {
@@ -116,3 +118,11 @@ func (s *HelmVersionAnalyzerTestSuite) TestVersionUpdateIsNeededWhenSomeChangesA
 	})
 	s.True(needsVersionUpdate)
 }
+
+func (s *HelmVersionAnalyzerTestSuite) TestNonHelmifiedRevision() {
+	helmRootDir := "./test-dir"
+	version := utils.GetResultOrPanic(s.helmVersionAnalyzer.ReadVersion(".", &models.ArgumentValues{
+		HelmArgumentKeyRootDir: &helmRootDir,
+	}))
+	s.Equal("", version)
+}