// Copyright 2024 Matthew Rich <matthewrich.conf@gmail.com>. All rights reserved.

package main

import (
	"github.com/stretchr/testify/assert"
	"os"
	"os/exec"
	"testing"
	"errors"
	"log/slog"
	"net/http"
	"net/http/httptest"
	"fmt"
	"decl/internal/tempdir"
	"archive/tar"
	"io"
	"log"
	"bytes"
)

var TempDir tempdir.Path = "testcli"

func TestMain(m *testing.M) {
	err := TempDir.Create()
	if err != nil || TempDir == "" {
		slog.Error("Failed creating temp dir", "error", err)
	}
        
	rc := m.Run()

	TempDir.Remove()
	os.Exit(rc)
} 

func TestCli(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}
	yaml, cliErr := exec.Command("./jx", "import", "--resource", "file://COPYRIGHT").Output()
	if cliErr != nil {
		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
	}
	assert.Nil(t, cliErr)
	assert.NotEqual(t, "", string(yaml))
	assert.Greater(t, len(yaml), 0)
}

func TestCliHTTPSource(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprint(w, `
resources:
- type: file
  attributes:
    path: foo.txt
    owner: nobody
    group: nobody
    mode: 0644
    content: |
      test file
      content
    state: present
`)
	}))
	defer ts.Close()

	yaml, cliErr := exec.Command("./jx", "import", "--resource", ts.URL).Output()
	if cliErr != nil {
		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
	}
	assert.Nil(t, cliErr)
	assert.NotEqual(t, "", string(yaml))
	assert.Greater(t, len(yaml), 0)
}

func TestCliConfigSource(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}

	configYaml := `
configurations:
- name: myhttpconnection
  values:
    http_user: foo
    http_pass: bar
`

	configPath := fmt.Sprintf("%s/testconfig.jx.yaml", TempDir)
	f, err := os.Create(configPath)
	assert.Nil(t, err)
	defer f.Close()
	_, writeErr := f.Write([]byte(configYaml))
	assert.Nil(t, writeErr)

	yaml, cliErr := exec.Command("./jx", "import", "--config", configPath, "--resource", "file://COPYRIGHT").Output()
	if cliErr != nil {
		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
	}
	assert.Nil(t, cliErr)
	slog.Info("TestConfigSource", "yaml", yaml)
}

func TestCliConfigCommand(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}

	yaml, cliErr := exec.Command("./jx", "config", "file://examples/config/file.jx.yaml").Output()
	if cliErr != nil {
		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
	}
	assert.Nil(t, cliErr)
	slog.Info("TestConfigCommand", "yaml", yaml)
	assert.NotEqual(t, "", string(yaml))
	assert.Greater(t, len(yaml), 0)
}

func TestCliImportPackageCommand(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}

	yaml, cliErr := exec.Command("./jx", "import", "package://").Output()
	if cliErr != nil {
		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
	}
	assert.Nil(t, cliErr)
	assert.NotEqual(t, "", string(yaml))
	assert.Greater(t, len(yaml), 0)
}

func TestCliExportTar(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}
	assert.Nil(t, TempDir.Mkdir("tar", 0755))
	assert.Nil(t, TempDir.CreateFile("tar/foo", "data"))
	assert.Nil(t, TempDir.CreateFile("tar/bar", "data"))

	cmdArgs := []string{"import", "--output", "tar://-", fmt.Sprintf("file://%s/tar", TempDir)}
	slog.Info("TestCliExportTar()", "cmd", cmdArgs)
	cmd := exec.Command("./jx", cmdArgs...)
	slog.Info("TestCliExportTar()", "cmd", cmd)
	stderr, errerr := cmd.StderrPipe()
	assert.Nil(t, errerr)
	stdout, outerr := cmd.StdoutPipe()
	assert.Nil(t, outerr)

	assert.Nil(t, cmd.Start())

	errOutput, _ := io.ReadAll(stderr)
	tarData, _ := io.ReadAll(stdout)

	assert.Nil(t, cmd.Wait())

	slog.Info("TestCliExportTar()", "stderr", errOutput)

	assert.Greater(t, len(tarData), 0)

	tr := tar.NewReader(bytes.NewBuffer(tarData))

	files := []string{fmt.Sprintf("%s/tar/foo", TempDir), fmt.Sprintf("%s/tar/bar", TempDir)}
	for {
		hdr, err := tr.Next()
		if err == io.EOF {
			break
		}
		if err != nil {
			log.Fatal(err)
		}
		assert.Contains(t, files, hdr.Name)
		contents, err := io.ReadAll(tr)
		assert.Nil(t, err)
		assert.Equal(t, []byte("data"), contents)
	}
}

func TestResourcesRead(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}


	server := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
		defer req.Body.Close()
		assert.Equal(t, req.URL.String(), "/resource/user")
		_, err := io.ReadAll(req.Body)
		assert.Nil(t, err)
		userdecl := []byte(`
type: "user"
attributes:
  name: "foo"
  gecos: "foo user"
`)

		_, writeErr := rw.Write(userdecl)
		assert.Nil(t, writeErr)
	}))
	defer server.Close()
	

	assert.Nil(t, TempDir.CreateFile("testread", "data"))

resources := fmt.Sprintf(`
resources:
- type: file
  transition: read
  attributes:
    path: %s
- type: user
  transition: read
  attributes:
    name: nobody
- type: group
  transition: read
  attributes:
    name: wheel
- type: container
  transition: read
  attributes:
    name: builder
- type: container-network
  transition: read
  attributes:
    name: default
- type: container-image
  transition: read
  attributes:
    name: nginx:latest
- type: http
  transition: read
  attributes:
    endpoint: %s/resource/user
- type: route
  transition: read
  attributes:
    to: 0.0.0.0
    gateway: 172.17.0.1
    interface: eth0
    proto: static
    scope: global
    rtid: all
    routetype: local
    metric: 100
`, TempDir.FilePath("testread"), server.URL)

	assert.Nil(t, TempDir.CreateFile("resources.jx.yaml", resources))

	yaml, cliErr := exec.Command("./jx", "apply", TempDir.FilePath("resources.jx.yaml")).Output()
	if cliErr != nil {
		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
	}
	assert.Nil(t, cliErr)
	assert.NotEqual(t, "", string(yaml))
	assert.Greater(t, len(yaml), 0)
}

func TestFailedResources(t *testing.T) {
	if _, e := os.Stat("./jx"); errors.Is(e, os.ErrNotExist) {
		t.Skip("cli not built")
	}
	os.Unsetenv("JX_DEBUG")
resources := `
resources:
- type: package
  transition: create
  attributes:
    name: foobarbaz
`

	assert.Nil(t, TempDir.CreateFile("err.jx.yaml", resources))

	yaml, cliErr := exec.Command("./jx", "apply", TempDir.FilePath("err.jx.yaml")).Output()
	if cliErr != nil {
		slog.Info("Debug CLI error", "error", cliErr, "stderr", cliErr.(*exec.ExitError).Stderr)
	}

	assert.NotNil(t, cliErr)
	assert.NotEqual(t, "", string(yaml))
	assert.Contains(t, string(cliErr.(*exec.ExitError).Stderr), "Document errors: 1")
}