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/databricks-sdk-go/service/catalog"
	"github.com/databricks/databricks-sdk-go/service/compute"
	"github.com/databricks/databricks-sdk-go/service/jobs"
	"github.com/google/uuid"
	"github.com/stretchr/testify/assert"
	"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{
		BundleRootPath: 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{
		BundleRootPath: 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{
		BundleRootPath: 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 TestAccUploadArtifactFileToVolumeThatDoesNotExist(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.Cleanup(func() {
		err = w.Schemas.DeleteByFullName(ctx, "main."+schemaName)
		require.NoError(t, err)
	})

	bundleRoot, err := initTestTemplate(t, ctx, "artifact_path_with_volume", map[string]any{
		"unique_id":   uuid.New().String(),
		"schema_name": schemaName,
		"volume_name": "doesnotexist",
	})
	require.NoError(t, err)

	t.Setenv("BUNDLE_ROOT", bundleRoot)
	stdout, stderr, err := internal.RequireErrorRun(t, "bundle", "deploy")

	assert.Error(t, err)
	assert.Equal(t, fmt.Sprintf(`Error: failed to fetch metadata for /Volumes/main/%s/doesnotexist: Not Found
  at workspace.artifact_path
  in databricks.yml:6:18

`, schemaName), stdout.String())
	assert.Equal(t, "", stderr.String())
}

func TestAccUploadArtifactToVolumeNotYetDeployed(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.Cleanup(func() {
		err = w.Schemas.DeleteByFullName(ctx, "main."+schemaName)
		require.NoError(t, err)
	})

	bundleRoot, err := initTestTemplate(t, ctx, "artifact_path_with_volume", map[string]any{
		"unique_id":   uuid.New().String(),
		"schema_name": schemaName,
		"volume_name": "my_volume",
	})
	require.NoError(t, err)

	t.Setenv("BUNDLE_ROOT", bundleRoot)
	stdout, stderr, err := internal.RequireErrorRun(t, "bundle", "deploy")

	assert.Error(t, err)
	assert.Equal(t, fmt.Sprintf(`Error: failed to fetch metadata for /Volumes/main/%s/my_volume: Not Found
  at workspace.artifact_path
     resources.volumes.foo
  in databricks.yml:6:18
     databricks.yml:11:7

You are using a UC volume in your artifact_path that is managed by
this bundle but which has not been deployed yet. Please deploy the UC volume in
a separate bundle deploy before using it in the artifact_path.

`, schemaName), stdout.String())
	assert.Equal(t, "", stderr.String())
}