Add WorkDir method to airshipctl config

The method also creates a directory if it doesn't exist.

Relates-To: #480
Closes: #480
Change-Id: I240b963c0b850bb3965396473898eb23df7c5a62

pkg/config/config.go

@@ -583,3 +583,13 @@ func (c *Config) CurrentContextManifestMetadata() (*Metadata, error) {
 	}
 	return meta, nil
 }
+
+// WorkDir returns working directory for airshipctl. Creates if it doesn't exist
+func (c *Config) WorkDir() (dir string, err error) {
+	dir = filepath.Join(util.UserHomeDir(), AirshipConfigDir)
+	// if not dir, create it
+	if !c.fileSystem.IsDir(dir) {
+		err = c.fileSystem.MkdirAll(dir)
+	}
+	return dir, err
+}

pkg/config/config_test.go

@@ -541,3 +541,11 @@ func TestModifyEncryptionConfigs(t *testing.T) {
 	conf.ModifyEncryptionConfig(encryptionConfig, eco)
 	assert.Equal(t, eco.DecryptionKeyPath, modifiedConfig.DecryptionKeyPath)
 }
+
+func TestWorkDir(t *testing.T) {
+	conf, cleanup := testutil.InitConfig(t)
+	defer cleanup(t)
+	wd, err := conf.WorkDir()
+	assert.NoError(t, err)
+	assert.NotEmpty(t, wd)
+}

pkg/phase/helper.go

@@ -28,7 +28,6 @@ import (
 	inventoryifc "opendev.org/airship/airshipctl/pkg/inventory/ifc"
 	"opendev.org/airship/airshipctl/pkg/log"
 	"opendev.org/airship/airshipctl/pkg/phase/ifc"
-	"opendev.org/airship/airshipctl/pkg/util"
 )
 
 // Helper provides functions built around phase bundle to filter and build documents
@@ -41,11 +40,14 @@ type Helper struct {
 
 	inventory inventoryifc.Inventory
 	metadata  *config.Metadata
+	config    *config.Config
 }
 
 // NewHelper constructs metadata interface based on config
 func NewHelper(cfg *config.Config) (ifc.Helper, error) {
-	helper := &Helper{}
+	helper := &Helper{
+		config: cfg,
+	}
 
 	var err error
 	helper.targetPath, err = cfg.CurrentContextTargetPath()
@@ -321,10 +323,9 @@ func (helper *Helper) PhaseEntryPointBasePath() string {
 	return helper.phaseEntryPointBasePath
 }
 
-// WorkDir return manifest root
+// WorkDir return working directory for aisrhipctl, creates it, if doesn't exist
-// TODO add creation of WorkDir if it doesn't exist
 func (helper *Helper) WorkDir() (string, error) {
-	return filepath.Join(util.UserHomeDir(), config.AirshipConfigDir), nil
+	return helper.config.WorkDir()
 }
 
 // Inventory return inventory interface