package integration

import (
	"fmt"
	"os"
	"regexp"
	"sort"

	"github.com/docker/go-units"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = Describe("Podman ps", func() {
	var (
		tempdir    string
		err        error
		podmanTest PodmanTest
	)

	BeforeEach(func() {
		tempdir, err = CreateTempDirInTempDir()
		if err != nil {
			os.Exit(1)
		}
		podmanTest = PodmanCreate(tempdir)
		podmanTest.RestoreAllArtifacts()
	})

	AfterEach(func() {
		podmanTest.Cleanup()
		f := CurrentGinkgoTestDescription()
		timedResult := fmt.Sprintf("Test: %s completed in %f seconds", f.TestText, f.Duration.Seconds())
		GinkgoWriter.Write([]byte(timedResult))
	})

	It("podman ps no containers", func() {
		session := podmanTest.Podman([]string{"ps"})
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))
	})

	It("podman ps default", func() {
		session := podmanTest.RunTopContainer("")
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))

		result := podmanTest.Podman([]string{"ps"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(BeNumerically(">", 0))
	})

	It("podman ps all", func() {
		_, ec, _ := podmanTest.RunLsContainer("")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(BeNumerically(">", 0))
	})

	It("podman ps size flag", func() {
		_, ec, _ := podmanTest.RunLsContainer("")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a", "--size"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(BeNumerically(">", 0))
	})

	It("podman ps quiet flag", func() {
		_, ec, fullCid := podmanTest.RunLsContainer("")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a", "-q"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(BeNumerically(">", 0))
		Expect(fullCid).To(ContainSubstring(result.OutputToStringArray()[0]))
	})

	It("podman ps latest flag", func() {
		_, ec, _ := podmanTest.RunLsContainer("")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "--latest"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(BeNumerically(">", 0))
	})

	It("podman ps last flag", func() {
		Skip("--last flag nonfunctional and disabled")

		_, ec, _ := podmanTest.RunLsContainer("test1")
		Expect(ec).To(Equal(0))

		_, ec, _ = podmanTest.RunLsContainer("test2")
		Expect(ec).To(Equal(0))

		_, ec, _ = podmanTest.RunLsContainer("test3")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "--last", "2"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(Equal(3))
	})

	It("podman ps no-trunc", func() {
		_, ec, fullCid := podmanTest.RunLsContainer("")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-aq", "--no-trunc"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(BeNumerically(">", 0))
		Expect(fullCid).To(Equal(result.OutputToStringArray()[0]))
	})

	It("podman ps namespace flag", func() {
		_, ec, _ := podmanTest.RunLsContainer("")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a", "--namespace"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(len(result.OutputToStringArray())).Should(BeNumerically(">", 0))
	})

	It("podman ps namespace flag with json format", func() {
		_, ec, _ := podmanTest.RunLsContainer("test1")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a", "--ns", "--format", "json"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(result.IsJSONOutputValid()).To(BeTrue())
	})

	It("podman ps namespace flag with go template format", func() {
		_, ec, _ := podmanTest.RunLsContainer("test1")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a", "--format", "\"table {{.ID}} {{.Image}} {{.Labels}}\""})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(result.IsJSONOutputValid()).To(BeTrue())
	})

	It("podman ps ancestor filter flag", func() {
		_, ec, _ := podmanTest.RunLsContainer("test1")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a", "--filter", "ancestor=docker.io/library/alpine:latest"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
	})

	It("podman ps id filter flag", func() {
		_, ec, fullCid := podmanTest.RunLsContainer("")
		Expect(ec).To(Equal(0))

		result := podmanTest.Podman([]string{"ps", "-a", "--filter", fmt.Sprintf("id=%s", fullCid)})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
	})

	It("podman ps id filter flag", func() {
		session := podmanTest.RunTopContainer("")
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))
		fullCid := session.OutputToString()

		result := podmanTest.Podman([]string{"ps", "-aq", "--no-trunc", "--filter", "status=running"})
		result.WaitWithDefaultTimeout()
		Expect(result.ExitCode()).To(Equal(0))
		Expect(result.OutputToStringArray()[0]).To(Equal(fullCid))
	})

	It("podman ps mutually exclusive flags", func() {
		session := podmanTest.Podman([]string{"ps", "-aqs"})
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Not(Equal(0)))

		session = podmanTest.Podman([]string{"ps", "-a", "--ns", "-s"})
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Not(Equal(0)))
	})

	It("podman --sort by size", func() {
		// these images chosen because their size would be sorted differently alphabetically vs
		// by the size of their virtual fs
		session := podmanTest.Podman([]string{"run", "docker.io/mattdm/fedora-small", "ls"})
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))

		podmanTest.RestoreArtifact(nginx)
		session = podmanTest.Podman([]string{"run", "-dt", "-P", "docker.io/library/nginx:latest"})
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))

		session = podmanTest.Podman([]string{"ps", "-a", "-s", "--sort=size", "--format", "{{.Size}}"})
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))

		sortedArr := session.OutputToStringArray()

		// TODO: This may be broken - the test was running without the
		// ability to perform any sorting for months and succeeded
		// without error.
		Expect(sort.SliceIsSorted(sortedArr, func(i, j int) bool {
			r := regexp.MustCompile(`^\S+\s+\(virtual (\S+)\)`)
			matches1 := r.FindStringSubmatch(sortedArr[i])
			matches2 := r.FindStringSubmatch(sortedArr[j])

			// sanity check in case an oddly formatted size appears
			if len(matches1) < 2 || len(matches2) < 2 {
				return sortedArr[i] < sortedArr[j]
			} else {
				size1, _ := units.FromHumanSize(matches1[1])
				size2, _ := units.FromHumanSize(matches2[1])
				return size1 < size2
			}
		})).To(BeTrue())

	})

	It("podman --sort by command", func() {
		session := podmanTest.RunTopContainer("")
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))

		podmanTest.RestoreArtifact(fedoraMinimal)
		session = podmanTest.Podman([]string{"run", "-d", fedoraMinimal, "pwd"})
		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))

		session = podmanTest.Podman([]string{"ps", "-a", "--sort=command", "--format", "{{.Command}}"})

		session.WaitWithDefaultTimeout()
		Expect(session.ExitCode()).To(Equal(0))

		sortedArr := session.OutputToStringArray()

		Expect(sort.SliceIsSorted(sortedArr, func(i, j int) bool { return sortedArr[i] < sortedArr[j] })).To(BeTrue())

	})
})