package cmd

import (
	"path/filepath"
	"testing"
	"time"

	"github.com/SAP/jenkins-library/pkg/mock"
	"github.com/SAP/jenkins-library/pkg/versioning"
	ws "github.com/SAP/jenkins-library/pkg/whitesource"
	"github.com/stretchr/testify/assert"
)

type whitesourceCoordinatesMock struct {
	GroupID    string
	ArtifactID string
	Version    string
}

type whitesourceUtilsMock struct {
	*ws.ScanUtilsMock
	coordinates             whitesourceCoordinatesMock
	usedBuildTool           string
	usedBuildDescriptorFile string
	usedOptions             versioning.Options
}

func (w *whitesourceUtilsMock) GetArtifactCoordinates(buildTool, buildDescriptorFile string,
	options *versioning.Options) (versioning.Coordinates, error) {
	w.usedBuildTool = buildTool
	w.usedBuildDescriptorFile = buildDescriptorFile
	w.usedOptions = *options
	return w.coordinates, nil
}

const wsTimeNow = "2010-05-10 00:15:42"

func (w *whitesourceUtilsMock) Now() time.Time {
	now, _ := time.Parse("2006-01-02 15:04:05", wsTimeNow)
	return now
}

func newWhitesourceUtilsMock() *whitesourceUtilsMock {
	return &whitesourceUtilsMock{
		ScanUtilsMock: &ws.ScanUtilsMock{
			FilesMock:      &mock.FilesMock{},
			ExecMockRunner: &mock.ExecMockRunner{},
		},
		coordinates: whitesourceCoordinatesMock{
			GroupID:    "mock-group-id",
			ArtifactID: "mock-artifact-id",
			Version:    "1.0.42",
		},
	}
}

func TestResolveProjectIdentifiers(t *testing.T) {
	t.Parallel()
	t.Run("happy path", func(t *testing.T) {
		// init
		config := ScanOptions{
			BuildTool:           "mta",
			BuildDescriptorFile: "my-mta.yml",
			VersioningModel:     "major",
			ProductName:         "mock-product",
			M2Path:              "m2/path",
			ProjectSettingsFile: "project-settings.xml",
			GlobalSettingsFile:  "global-settings.xml",
		}
		utilsMock := newWhitesourceUtilsMock()
		systemMock := ws.NewSystemMock("ignored")
		scan := newWhitesourceScan(&config)
		// test
		err := resolveProjectIdentifiers(&config, scan, utilsMock, systemMock)
		// assert
		if assert.NoError(t, err) {
			assert.Equal(t, "mock-group-id-mock-artifact-id", scan.AggregateProjectName)
			assert.Equal(t, "1", config.ProductVersion)
			assert.Equal(t, "mock-product-token", config.ProductToken)
			assert.Equal(t, "mta", utilsMock.usedBuildTool)
			assert.Equal(t, "my-mta.yml", utilsMock.usedBuildDescriptorFile)
			assert.Equal(t, "project-settings.xml", utilsMock.usedOptions.ProjectSettingsFile)
			assert.Equal(t, "global-settings.xml", utilsMock.usedOptions.GlobalSettingsFile)
			assert.Equal(t, "m2/path", utilsMock.usedOptions.M2Path)
		}
	})
	t.Run("retrieves token for configured project name", func(t *testing.T) {
		// init
		config := ScanOptions{
			BuildTool:           "mta",
			BuildDescriptorFile: "my-mta.yml",
			VersioningModel:     "major",
			ProductName:         "mock-product",
			ProjectName:         "mock-project",
		}
		utilsMock := newWhitesourceUtilsMock()
		systemMock := ws.NewSystemMock("ignored")
		scan := newWhitesourceScan(&config)
		// test
		err := resolveProjectIdentifiers(&config, scan, utilsMock, systemMock)
		// assert
		if assert.NoError(t, err) {
			assert.Equal(t, "mock-project", scan.AggregateProjectName)
			assert.Equal(t, "1", config.ProductVersion)
			assert.Equal(t, "mock-product-token", config.ProductToken)
			assert.Equal(t, "mta", utilsMock.usedBuildTool)
			assert.Equal(t, "my-mta.yml", utilsMock.usedBuildDescriptorFile)
			assert.Equal(t, "mock-project-token", config.ProjectToken)
		}
	})
	t.Run("product not found", func(t *testing.T) {
		// init
		config := ScanOptions{
			BuildTool:       "mta",
			VersioningModel: "major",
			ProductName:     "does-not-exist",
		}
		utilsMock := newWhitesourceUtilsMock()
		systemMock := ws.NewSystemMock("ignored")
		scan := newWhitesourceScan(&config)
		// test
		err := resolveProjectIdentifiers(&config, scan, utilsMock, systemMock)
		// assert
		assert.EqualError(t, err, "no product with name 'does-not-exist' found in Whitesource")
	})
	t.Run("product not found, created from pipeline", func(t *testing.T) {
		// init
		config := ScanOptions{
			BuildTool:                            "mta",
			CreateProductFromPipeline:            true,
			EmailAddressesOfInitialProductAdmins: []string{"user1@domain.org", "user2@domain.org"},
			VersioningModel:                      "major",
			ProductName:                          "created-by-pipeline",
		}
		utilsMock := newWhitesourceUtilsMock()
		systemMock := ws.NewSystemMock("ignored")
		scan := newWhitesourceScan(&config)
		// test
		err := resolveProjectIdentifiers(&config, scan, utilsMock, systemMock)
		// assert
		assert.NoError(t, err)
		assert.Len(t, systemMock.Products, 2)
		assert.Equal(t, "created-by-pipeline", systemMock.Products[1].Name)
		assert.Equal(t, "mock-product-token-1", config.ProductToken)
	})
}

func TestRunWhitesourceExecuteScan(t *testing.T) {
	t.Parallel()
	t.Run("fails for invalid configured project token", func(t *testing.T) {
		// init
		config := ScanOptions{
			ScanType:            "unified-agent",
			BuildDescriptorFile: "my-mta.yml",
			VersioningModel:     "major",
			ProductName:         "mock-product",
			ProjectToken:        "no-such-project-token",
			AgentDownloadURL:    "https://whitesource.com/agent.jar",
			AgentFileName:       "ua.jar",
		}
		utilsMock := newWhitesourceUtilsMock()
		utilsMock.AddFile("wss-generated-file.config", []byte("key=value"))
		systemMock := ws.NewSystemMock("ignored")
		scan := newWhitesourceScan(&config)
		cpe := whitesourceExecuteScanCommonPipelineEnvironment{}
		// test
		err := runWhitesourceExecuteScan(&config, scan, utilsMock, systemMock, &cpe)
		// assert
		assert.EqualError(t, err, "no project with token 'no-such-project-token' found in Whitesource")
		assert.Equal(t, "", config.ProjectName)
		assert.Equal(t, "", scan.AggregateProjectName)
	})
	t.Run("retrieves aggregate project name by configured token", func(t *testing.T) {
		// init
		config := ScanOptions{
			BuildDescriptorFile:       "my-mta.yml",
			VersioningModel:           "major",
			AgentDownloadURL:          "https://whitesource.com/agent.jar",
			ReportDirectoryName:       "ws-reports",
			VulnerabilityReportFormat: "pdf",
			Reporting:                 true,
			AgentFileName:             "ua.jar",
			ProductName:               "mock-product",
			ProjectToken:              "mock-project-token",
			ScanType:                  "unified-agent",
		}
		utilsMock := newWhitesourceUtilsMock()
		utilsMock.AddFile("wss-generated-file.config", []byte("key=value"))
		lastUpdatedDate := time.Now().Format(ws.DateTimeLayout)
		systemMock := ws.NewSystemMock(lastUpdatedDate)
		scan := newWhitesourceScan(&config)
		cpe := whitesourceExecuteScanCommonPipelineEnvironment{}
		// test
		err := runWhitesourceExecuteScan(&config, scan, utilsMock, systemMock, &cpe)
		// assert
		assert.NoError(t, err)
		// Retrieved project name is stored in scan.AggregateProjectName, but not in config.ProjectName
		// in order to differentiate between aggregate-project scanning and multi-project scanning.
		assert.Equal(t, "", config.ProjectName)
		assert.Equal(t, "mock-project", scan.AggregateProjectName)
		if assert.Len(t, utilsMock.DownloadedFiles, 1) {
			assert.Equal(t, ws.DownloadedFile{
				SourceURL: "https://whitesource.com/agent.jar",
				FilePath:  "ua.jar",
			}, utilsMock.DownloadedFiles[0])
		}
		if assert.Len(t, cpe.custom.whitesourceProjectNames, 1) {
			assert.Equal(t, []string{"mock-project - 1"}, cpe.custom.whitesourceProjectNames)
		}
		assert.True(t, utilsMock.HasWrittenFile("ws-reports/mock-project - 1-vulnerability-report.pdf"))
		assert.True(t, utilsMock.HasWrittenFile("ws-reports/mock-project - 1-risk-report.pdf"))
	})
}

func TestPersistScannedProjects(t *testing.T) {
	t.Parallel()
	t.Run("write 1 scanned projects", func(t *testing.T) {
		// init
		cpe := whitesourceExecuteScanCommonPipelineEnvironment{}
		config := &ScanOptions{ProductVersion: "1"}
		scan := newWhitesourceScan(config)
		_ = scan.AppendScannedProject("project")
		// test
		persistScannedProjects(config, scan, &cpe)
		// assert
		assert.Equal(t, []string{"project - 1"}, cpe.custom.whitesourceProjectNames)
	})
	t.Run("write 2 scanned projects", func(t *testing.T) {
		// init
		cpe := whitesourceExecuteScanCommonPipelineEnvironment{}
		config := &ScanOptions{ProductVersion: "1"}
		scan := newWhitesourceScan(config)
		_ = scan.AppendScannedProject("project-app")
		_ = scan.AppendScannedProject("project-db")
		// test
		persistScannedProjects(config, scan, &cpe)
		// assert
		assert.Equal(t, []string{"project-app - 1", "project-db - 1"}, cpe.custom.whitesourceProjectNames)
	})
	t.Run("write no projects", func(t *testing.T) {
		// init
		cpe := whitesourceExecuteScanCommonPipelineEnvironment{}
		config := &ScanOptions{ProductVersion: "1"}
		scan := newWhitesourceScan(config)
		// test
		persistScannedProjects(config, scan, &cpe)
		// assert
		assert.Equal(t, []string{}, cpe.custom.whitesourceProjectNames)
	})
	t.Run("write aggregated project", func(t *testing.T) {
		// init
		cpe := whitesourceExecuteScanCommonPipelineEnvironment{}
		config := &ScanOptions{ProjectName: "project", ProductVersion: "1"}
		scan := newWhitesourceScan(config)
		// test
		persistScannedProjects(config, scan, &cpe)
		// assert
		assert.Equal(t, []string{"project - 1"}, cpe.custom.whitesourceProjectNames)
	})
}

func TestAggregateVersionWideLibraries(t *testing.T) {
	t.Parallel()
	t.Run("happy path", func(t *testing.T) {
		// init
		config := &ScanOptions{
			ProductToken:        "mock-product-token",
			ProductVersion:      "1",
			ReportDirectoryName: "mock-reports",
		}
		utils := newWhitesourceUtilsMock()
		system := ws.NewSystemMock("2010-05-30 00:15:00 +0100")
		// test
		err := aggregateVersionWideLibraries(config, utils, system)
		// assert
		resource := filepath.Join("mock-reports", "libraries-20100510-001542.csv")
		if assert.NoError(t, err) && assert.True(t, utils.HasWrittenFile(resource)) {
			contents, _ := utils.FileRead(resource)
			asString := string(contents)
			assert.Equal(t, "Library Name, Project Name\nmock-library, mock-project\n", asString)
		}
	})
}

func TestAggregateVersionWideVulnerabilities(t *testing.T) {
	t.Parallel()
	t.Run("happy path", func(t *testing.T) {
		// init
		config := &ScanOptions{
			ProductToken:        "mock-product-token",
			ProductVersion:      "1",
			ReportDirectoryName: "mock-reports",
		}
		utils := newWhitesourceUtilsMock()
		system := ws.NewSystemMock("2010-05-30 00:15:00 +0100")
		// test
		err := aggregateVersionWideVulnerabilities(config, utils, system)
		// assert
		resource := filepath.Join("mock-reports", "project-names-aggregated.txt")
		assert.NoError(t, err)
		if assert.True(t, utils.HasWrittenFile(resource)) {
			contents, _ := utils.FileRead(resource)
			asString := string(contents)
			assert.Equal(t, "mock-project - 1\n", asString)
		}
		reportSheet := filepath.Join("mock-reports", "vulnerabilities-20100510-001542.xlsx")
		sheetContents, err := utils.FileRead(reportSheet)
		assert.NoError(t, err)
		assert.NotEmpty(t, sheetContents)
	})
}

func TestCheckAndReportScanResults(t *testing.T) {
	t.Parallel()
	t.Run("no reports requested", func(t *testing.T) {
		// init
		config := &ScanOptions{
			ProductToken:        "mock-product-token",
			ProjectToken:        "mock-project-token",
			ProductVersion:      "1",
			ReportDirectoryName: "mock-reports",
		}
		scan := newWhitesourceScan(config)
		utils := newWhitesourceUtilsMock()
		system := ws.NewSystemMock(time.Now().Format(ws.DateTimeLayout))
		// test
		err := checkAndReportScanResults(config, scan, utils, system)
		// assert
		assert.NoError(t, err)
		vPath := filepath.Join("mock-reports", "mock-project-vulnerability-report.txt")
		assert.False(t, utils.HasWrittenFile(vPath))
		rPath := filepath.Join("mock-reports", "mock-project-risk-report.pdf")
		assert.False(t, utils.HasWrittenFile(rPath))
	})
	t.Run("check vulnerabilities - invalid limit", func(t *testing.T) {
		// init
		config := &ScanOptions{
			SecurityVulnerabilities: true,
			CvssSeverityLimit:       "invalid",
		}
		scan := newWhitesourceScan(config)
		utils := newWhitesourceUtilsMock()
		system := ws.NewSystemMock(time.Now().Format(ws.DateTimeLayout))
		// test
		err := checkAndReportScanResults(config, scan, utils, system)
		// assert
		assert.EqualError(t, err, "failed to parse parameter cvssSeverityLimit (invalid) as floating point number: strconv.ParseFloat: parsing \"invalid\": invalid syntax")
	})
	t.Run("check vulnerabilities - limit not hit", func(t *testing.T) {
		// init
		config := &ScanOptions{
			ProductToken:            "mock-product-token",
			ProjectToken:            "mock-project-token",
			ProductVersion:          "1",
			ReportDirectoryName:     "mock-reports",
			SecurityVulnerabilities: true,
			CvssSeverityLimit:       "6.0",
		}
		scan := newWhitesourceScan(config)
		utils := newWhitesourceUtilsMock()
		system := ws.NewSystemMock(time.Now().Format(ws.DateTimeLayout))
		// test
		err := checkAndReportScanResults(config, scan, utils, system)
		// assert
		assert.NoError(t, err)
	})
	t.Run("check vulnerabilities - limit exceeded", func(t *testing.T) {
		// init
		config := &ScanOptions{
			ProductToken:            "mock-product-token",
			ProjectName:             "mock-project - 1",
			ProjectToken:            "mock-project-token",
			ProductVersion:          "1",
			ReportDirectoryName:     "mock-reports",
			SecurityVulnerabilities: true,
			CvssSeverityLimit:       "4",
		}
		scan := newWhitesourceScan(config)
		utils := newWhitesourceUtilsMock()
		system := ws.NewSystemMock(time.Now().Format(ws.DateTimeLayout))
		// test
		err := checkAndReportScanResults(config, scan, utils, system)
		// assert
		assert.EqualError(t, err, "1 Open Source Software Security vulnerabilities with CVSS score greater or equal to 4.0 detected in project mock-project - 1")
	})
}