package bundle

import (
	"fmt"
	"os"
	"path"
	"path/filepath"
	"regexp"
	"testing"

	"github.com/databricks/cli/bundle"
	"github.com/databricks/cli/bundle/config"
	"github.com/databricks/cli/bundle/config/resources"
	"github.com/databricks/cli/bundle/libraries"
	"github.com/databricks/cli/internal"
	"github.com/databricks/cli/internal/acc"
	"github.com/databricks/cli/libs/dyn"
	"github.com/databricks/databricks-sdk-go/service/catalog"
	"github.com/databricks/databricks-sdk-go/service/compute"
	"github.com/databricks/databricks-sdk-go/service/jobs"
	"github.com/stretchr/testify/require"
)

func touchEmptyFile(t *testing.T, path string) {
	err := os.MkdirAll(filepath.Dir(path), 0700)
	require.NoError(t, err)
	f, err := os.Create(path)
	require.NoError(t, err)
	f.Close()
}

func TestAccUploadArtifactFileToCorrectRemotePath(t *testing.T) {
	ctx, wt := acc.WorkspaceTest(t)
	w := wt.W
	dir := t.TempDir()
	whlPath := filepath.Join(dir, "dist", "test.whl")
	touchEmptyFile(t, whlPath)

	wsDir := internal.TemporaryWorkspaceDir(t, w)

	b := &bundle.Bundle{
		RootPath:     dir,
		SyncRootPath: dir,
		Config: config.Root{
			Bundle: config.Bundle{
				Target: "whatever",
			},
			Workspace: config.Workspace{
				ArtifactPath: wsDir,
			},
			Artifacts: config.Artifacts{
				"test": &config.Artifact{
					Type: "whl",
					Files: []config.ArtifactFile{
						{
							Source: whlPath,
						},
					},
				},
			},
			Resources: config.Resources{
				Jobs: map[string]*resources.Job{
					"test": {
						JobSettings: &jobs.JobSettings{
							Tasks: []jobs.Task{
								{
									Libraries: []compute.Library{
										{
											Whl: "dist/test.whl",
										},
									},
								},
							},
						},
					},
				},
			},
		},
	}

	diags := bundle.Apply(ctx, b, bundle.Seq(libraries.ExpandGlobReferences(), libraries.Upload()))
	require.NoError(t, diags.Error())

	// The remote path attribute on the artifact file should have been set.
	require.Regexp(t,
		regexp.MustCompile(path.Join(regexp.QuoteMeta(wsDir), `.internal/test\.whl`)),
		b.Config.Artifacts["test"].Files[0].RemotePath,
	)

	// The task library path should have been updated to the remote path.
	require.Regexp(t,
		regexp.MustCompile(path.Join("/Workspace", regexp.QuoteMeta(wsDir), `.internal/test\.whl`)),
		b.Config.Resources.Jobs["test"].JobSettings.Tasks[0].Libraries[0].Whl,
	)
}

func TestAccUploadArtifactFileToCorrectRemotePathWithEnvironments(t *testing.T) {
	ctx, wt := acc.WorkspaceTest(t)
	w := wt.W
	dir := t.TempDir()
	whlPath := filepath.Join(dir, "dist", "test.whl")
	touchEmptyFile(t, whlPath)

	wsDir := internal.TemporaryWorkspaceDir(t, w)

	b := &bundle.Bundle{
		RootPath:     dir,
		SyncRootPath: dir,
		Config: config.Root{
			Bundle: config.Bundle{
				Target: "whatever",
			},
			Workspace: config.Workspace{
				ArtifactPath: wsDir,
			},
			Artifacts: config.Artifacts{
				"test": &config.Artifact{
					Type: "whl",
					Files: []config.ArtifactFile{
						{
							Source: whlPath,
						},
					},
				},
			},
			Resources: config.Resources{
				Jobs: map[string]*resources.Job{
					"test": {
						JobSettings: &jobs.JobSettings{
							Environments: []jobs.JobEnvironment{
								{
									Spec: &compute.Environment{
										Dependencies: []string{
											"dist/test.whl",
										},
									},
								},
							},
						},
					},
				},
			},
		},
	}

	diags := bundle.Apply(ctx, b, bundle.Seq(libraries.ExpandGlobReferences(), libraries.Upload()))
	require.NoError(t, diags.Error())

	// The remote path attribute on the artifact file should have been set.
	require.Regexp(t,
		regexp.MustCompile(path.Join(regexp.QuoteMeta(wsDir), `.internal/test\.whl`)),
		b.Config.Artifacts["test"].Files[0].RemotePath,
	)

	// The job environment deps path should have been updated to the remote path.
	require.Regexp(t,
		regexp.MustCompile(path.Join("/Workspace", regexp.QuoteMeta(wsDir), `.internal/test\.whl`)),
		b.Config.Resources.Jobs["test"].JobSettings.Environments[0].Spec.Dependencies[0],
	)
}

func TestAccUploadArtifactFileToCorrectRemotePathForVolumes(t *testing.T) {
	ctx, wt := acc.WorkspaceTest(t)
	w := wt.W

	if os.Getenv("TEST_METASTORE_ID") == "" {
		t.Skip("Skipping tests that require a UC Volume when metastore id is not set.")
	}

	volumePath := internal.TemporaryUcVolume(t, w)

	dir := t.TempDir()
	whlPath := filepath.Join(dir, "dist", "test.whl")
	touchEmptyFile(t, whlPath)

	b := &bundle.Bundle{
		RootPath:     dir,
		SyncRootPath: dir,
		Config: config.Root{
			Bundle: config.Bundle{
				Target: "whatever",
			},
			Workspace: config.Workspace{
				ArtifactPath: volumePath,
			},
			Artifacts: config.Artifacts{
				"test": &config.Artifact{
					Type: "whl",
					Files: []config.ArtifactFile{
						{
							Source: whlPath,
						},
					},
				},
			},
			Resources: config.Resources{
				Jobs: map[string]*resources.Job{
					"test": {
						JobSettings: &jobs.JobSettings{
							Tasks: []jobs.Task{
								{
									Libraries: []compute.Library{
										{
											Whl: "dist/test.whl",
										},
									},
								},
							},
						},
					},
				},
			},
		},
	}

	diags := bundle.Apply(ctx, b, bundle.Seq(libraries.ExpandGlobReferences(), libraries.Upload()))
	require.NoError(t, diags.Error())

	// The remote path attribute on the artifact file should have been set.
	require.Regexp(t,
		regexp.MustCompile(path.Join(regexp.QuoteMeta(volumePath), `.internal/test\.whl`)),
		b.Config.Artifacts["test"].Files[0].RemotePath,
	)

	// The task library path should have been updated to the remote path.
	require.Regexp(t,
		regexp.MustCompile(path.Join(regexp.QuoteMeta(volumePath), `.internal/test\.whl`)),
		b.Config.Resources.Jobs["test"].JobSettings.Tasks[0].Libraries[0].Whl,
	)
}

func TestAccUploadArtifactFileToInvalidVolume(t *testing.T) {
	ctx, wt := acc.UcWorkspaceTest(t)
	w := wt.W

	schemaName := internal.RandomName("schema-")

	_, err := w.Schemas.Create(ctx, catalog.CreateSchema{
		CatalogName: "main",
		Comment:     "test schema",
		Name:        schemaName,
	})
	require.NoError(t, err)

	t.Run("volume not in DAB", func(t *testing.T) {
		volumePath := fmt.Sprintf("/Volumes/main/%s/doesnotexist", schemaName)
		dir := t.TempDir()

		b := &bundle.Bundle{
			RootPath:     dir,
			SyncRootPath: dir,
			Config: config.Root{
				Bundle: config.Bundle{
					Target: "whatever",
				},
				Workspace: config.Workspace{
					ArtifactPath: volumePath,
				},
				Resources: config.Resources{
					Volumes: map[string]*resources.Volume{
						"foo": {
							CreateVolumeRequestContent: &catalog.CreateVolumeRequestContent{
								CatalogName: "main",
								Name:        "my_volume",
								VolumeType:  "MANAGED",
								SchemaName:  schemaName,
							},
						},
					},
				},
			},
		}

		diags := bundle.Apply(ctx, b, bundle.Seq(libraries.ExpandGlobReferences(), libraries.Upload()))
		require.EqualError(t, diags.Error(), fmt.Sprintf("the bundle is configured to upload artifacts to %s but a UC volume at %s does not exist", path.Join(volumePath, ".internal"), volumePath))
	})

	t.Run("volume in DAB config", func(t *testing.T) {
		volumePath := fmt.Sprintf("/Volumes/main/%s/my_volume", schemaName)
		dir := t.TempDir()

		b := &bundle.Bundle{
			RootPath:     dir,
			SyncRootPath: dir,
			Config: config.Root{
				Bundle: config.Bundle{
					Target: "whatever",
				},
				Workspace: config.Workspace{
					ArtifactPath: volumePath,
				},
				Resources: config.Resources{
					Volumes: map[string]*resources.Volume{
						"foo": {
							CreateVolumeRequestContent: &catalog.CreateVolumeRequestContent{
								CatalogName: "main",
								Name:        "my_volume",
								VolumeType:  "MANAGED",
								SchemaName:  schemaName,
							},
						},
					},
				},
			},
		}

		// set location of volume definition in config.
		b.Config.Mutate(func(v dyn.Value) (dyn.Value, error) {
			return dyn.Map(v, "resources.volumes.foo", func(p dyn.Path, volume dyn.Value) (dyn.Value, error) {
				return volume.WithLocations([]dyn.Location{
					{
						File:   filepath.Join(dir, "databricks.yml"),
						Line:   1,
						Column: 2,
					},
				}), nil
			})
		})

		diags := bundle.Apply(ctx, b, bundle.Seq(libraries.ExpandGlobReferences(), libraries.Upload()))
		require.EqualError(
			t,
			diags.Error(),
			fmt.Sprintf(`the bundle is configured to upload artifacts to %s but a
UC volume at %s does not exist. Note: We detected that you have a UC volume
defined that matched the path above at %s. Please deploy the UC volume
in a separate deployment before using it in as a destination to upload
artifacts.`, path.Join(volumePath, ".internal"), volumePath, dyn.Location{
				File:   filepath.Join(dir, "databricks.yml"),
				Line:   1,
				Column: 2,
			}))
	})
}