package version

import (
	"io/ioutil"
	"os"
	"strings"

	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = t.Describe("Version", func() {
	tempFileName := "tempVersionFile"
	tempVersion := "1.1.1"
	tempVersion2 := "1.13.1"

	t.Describe("test setting version", func() {
		It("should succeed to parse version", func() {
			_, err := parseVersionConstant("1.1.1", "")
			Expect(err).To(BeNil())
			_, err = parseVersionConstant("1.1.1-dev", "")
			Expect(err).To(BeNil())
			_, err = parseVersionConstant("1.1.1-dev", "biglonggitcommit")
			Expect(err).To(BeNil())
		})
		It("should succeed to parse the version with a git commit", func() {
			gitCommit := "\"myfavoritecommit\""
			v, err := parseVersionConstant(tempVersion, gitCommit)
			Expect(err).To(BeNil())
			Expect(v.Build).To(HaveLen(1))
			trimmed := strings.Trim(gitCommit, "\"")
			Expect(v.Build[0]).To(Equal(trimmed))
		})
		It("should ignore empty git commit", func() {
			v, err := parseVersionConstant(tempVersion, "")
			Expect(err).To(BeNil())
			Expect(v.Build).To(HaveLen(0))
		})
		It("should fail to set a bad version", func() {
			_, err := parseVersionConstant("badversion", "")
			Expect(err).NotTo(BeNil())
		})
		It("should parse version with current version", func() {
			_, err := parseVersionConstant(Version, "")
			Expect(err).To(BeNil())
		})
		It("should write version for file writes", func() {
			version := tempVersion
			gitCommit := "fakeGitCommit"
			tempFileName := tempFileName
			tempFile := t.MustTempFile(tempFileName)
			Expect(ioutil.WriteFile(tempFile, []byte(""), 0))

			err := writeVersionFile(tempFileName, gitCommit, version)
			defer os.Remove(tempFileName)
			Expect(err).To(BeNil())

			versionBytes, err := ioutil.ReadFile(tempFileName)
			Expect(err).To(BeNil())

			versionConstantVersion, err := parseVersionConstant(version, gitCommit)
			Expect(err).To(BeNil())

			versionConstantJSON, err := versionConstantVersion.MarshalJSON()
			Expect(err).To(BeNil())

			Expect(string(versionBytes)).To(Equal(string(versionConstantJSON)))
		})
		It("should create dir for version file", func() {
			filename := "/tmp/crio/temp-testing-file"
			err := writeVersionFile(filename, "", tempVersion)
			Expect(err).To(BeNil())

			_, err = ioutil.ReadFile(filename)
			Expect(err).To(BeNil())
		})
		It("should fail to upgrade with unspecified version", func() {
			upgrade, err := shouldCrioWipe("", tempVersion)
			Expect(upgrade).To(BeTrue())
			Expect(err).ToNot(BeNil())
		})
		It("should fail to upgrade with empty version file", func() {
			tempFileName := tempFileName
			_ = t.MustTempFile(tempFileName)

			upgrade, err := shouldCrioWipe(tempFileName, tempVersion)
			Expect(upgrade).To(BeTrue())
			Expect(err).ToNot(BeNil())
		})
		It("should fail upgrade with faulty version", func() {
			tempFileName := "tempVersionFile"
			tempFile := t.MustTempFile(tempFileName)
			Expect(ioutil.WriteFile(tempFile, []byte("bad version file"), 0o644))

			upgrade, err := shouldCrioWipe(tempFileName, tempVersion)
			Expect(upgrade).To(BeTrue())
			Expect(err).ToNot(BeNil())
		})
		It("should fail to upgrade with same version", func() {
			oldVersion := tempVersion
			newVersion := tempVersion

			tempFileName := tempFileName
			_ = t.MustTempFile(tempFileName)

			err := writeVersionFile(tempFileName, "", oldVersion)
			defer os.Remove(tempFileName)
			Expect(err).To(BeNil())

			upgrade, err := shouldCrioWipe(tempFileName, newVersion)
			Expect(upgrade).To(BeFalse())
			Expect(err).To(BeNil())
		})
		It("should not upgrade with sub minor release", func() {
			oldVersion := tempVersion
			newVersion := "1.1.2"

			tempFileName := tempFileName
			_ = t.MustTempFile(tempFileName)

			err := writeVersionFile(tempFileName, "", oldVersion)
			defer os.Remove(tempFileName)
			Expect(err).To(BeNil())

			upgrade, err := shouldCrioWipe(tempFileName, newVersion)
			Expect(upgrade).To(BeFalse())
			Expect(err).To(BeNil())
		})
		It("should upgrade between versions", func() {
			oldVersion := "1.14.1"
			newVersion := tempVersion2

			tempFileName := tempFileName
			_ = t.MustTempFile(tempFileName)

			err := writeVersionFile(tempFileName, "", oldVersion)
			defer os.Remove(tempFileName)
			Expect(err).To(BeNil())

			upgrade, err := shouldCrioWipe(tempFileName, newVersion)
			Expect(upgrade).To(BeTrue())
			Expect(err).To(BeNil())
		})
		It("should upgrade with major release", func() {
			oldVersion := tempVersion2
			newVersion := "2.0.0"

			tempFileName := tempFileName
			_ = t.MustTempFile(tempFileName)

			err := writeVersionFile(tempFileName, "", oldVersion)
			defer os.Remove(tempFileName)
			Expect(err).To(BeNil())

			upgrade, err := shouldCrioWipe(tempFileName, newVersion)
			Expect(upgrade).To(BeTrue())
			Expect(err).To(BeNil())
		})
		It("should fail to upgrade with bad version", func() {
			oldVersion := "bad version format"
			newVersion := tempVersion2

			tempFileName := tempFileName
			_ = t.MustTempFile(tempFileName)

			err := writeVersionFile(tempFileName, "", oldVersion)
			Expect(err).ToNot(BeNil())

			upgrade, err := shouldCrioWipe(tempFileName, newVersion)
			Expect(upgrade).To(BeTrue())
			Expect(err).ToNot(BeNil())
		})
	})
})
