package cnbutils_test

import (
	"testing"

	"github.com/SAP/jenkins-library/pkg/cnbutils"
	"github.com/SAP/jenkins-library/pkg/mock"
	"github.com/stretchr/testify/assert"
)

func TestGenerateCnbAuth(t *testing.T) {
	var mockUtils = &cnbutils.MockUtils{
		ExecMockRunner: &mock.ExecMockRunner{},
		FilesMock:      &mock.FilesMock{},
	}

	t.Run("successfully generates cnb auth env variable", func(t *testing.T) {
		mockUtils.AddFile("/test/valid_config.json", []byte("{\"auths\":{\"example.com\":{\"auth\":\"dXNlcm5hbWU6cGFzc3dvcmQ=\"}}}"))
		auth, err := cnbutils.GenerateCnbAuth("/test/valid_config.json", mockUtils)
		assert.NoError(t, err)
		assert.Equal(t, "{\"example.com\":\"Basic dXNlcm5hbWU6cGFzc3dvcmQ=\"}", auth)
	})

	t.Run("successfully generates cnb auth env variable from username and password", func(t *testing.T) {
		mockUtils.AddFile("/test/valid_config.json", []byte("{\"auths\":{\"example.com\":{\"username\":\"username\",\"password\":\"password\"}}}"))
		auth, err := cnbutils.GenerateCnbAuth("/test/valid_config.json", mockUtils)
		assert.NoError(t, err)
		assert.Equal(t, "{\"example.com\":\"Basic dXNlcm5hbWU6cGFzc3dvcmQ=\"}", auth)
	})

	t.Run("skips registry with empty credentials", func(t *testing.T) {
		mockUtils.AddFile("/test/valid_config.json", []byte("{\"auths\":{\"example.com\":{}}}"))
		auth, err := cnbutils.GenerateCnbAuth("/test/valid_config.json", mockUtils)
		assert.NoError(t, err)
		assert.Equal(t, "{}", auth)
	})

	t.Run("successfully generates cnb auth env variable if docker config is not present", func(t *testing.T) {
		auth, err := cnbutils.GenerateCnbAuth("", mockUtils)
		assert.NoError(t, err)
		assert.Equal(t, "{}", auth)
	})

	t.Run("fails if file not found", func(t *testing.T) {
		_, err := cnbutils.GenerateCnbAuth("/not/found", mockUtils)
		assert.Error(t, err)
		assert.Equal(t, "could not read '/not/found'", err.Error())
	})

	t.Run("fails if file is invalid json", func(t *testing.T) {
		mockUtils.AddFile("/test/invalid_config.json", []byte("not a json"))
		_, err := cnbutils.GenerateCnbAuth("/test/invalid_config.json", mockUtils)
		assert.Error(t, err)
		assert.Equal(t, "invalid character 'o' in literal null (expecting 'u')", err.Error())
	})
}
