/* Vuls - Vulnerability Scanner
Copyright (C) 2016  Future Architect, Inc. Japan.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package report

import (
	"bytes"
	"fmt"
	"path/filepath"
	"strings"
	"text/template"
	"time"

	log "github.com/Sirupsen/logrus"
	"github.com/future-architect/vuls/config"
	"github.com/future-architect/vuls/models"
	"github.com/google/subcommands"
	"github.com/gosuri/uitable"
	"github.com/jroimartin/gocui"
	cve "github.com/kotakanbe/go-cve-dictionary/models"
)

var scanHistory models.ScanHistory
var currentScanResult models.ScanResult
var currentCveInfo int
var currentDetailLimitY int

// RunTui execute main logic
func RunTui(jsonDirName string) subcommands.ExitStatus {
	var err error
	scanHistory, err = selectScanHistory(jsonDirName)
	if err != nil {
		log.Fatal(err)
		return subcommands.ExitFailure
	}

	g := gocui.NewGui()
	if err := g.Init(); err != nil {
		log.Panicln(err)
	}
	defer g.Close()

	g.SetLayout(layout)
	if err := keybindings(g); err != nil {
		log.Panicln(err)
	}
	g.SelBgColor = gocui.ColorGreen
	g.SelFgColor = gocui.ColorBlack
	g.Cursor = true

	if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
		log.Panicln(err)
		return subcommands.ExitFailure
	}

	return subcommands.ExitSuccess
}

func selectScanHistory(jsonDirName string) (latest models.ScanHistory, err error) {
	var jsonDir string
	if 0 < len(jsonDirName) {
		jsonDir = filepath.Join(config.Conf.JSONBaseDir, jsonDirName)
	} else {
		var jsonDirs JSONDirs
		if jsonDirs, err = GetValidJSONDirs(); err != nil {
			return
		}
		jsonDir = jsonDirs[0]
	}
	if latest, err = LoadOneScanHistory(jsonDir); err != nil {
		return
	}
	return
}

func keybindings(g *gocui.Gui) (err error) {
	errs := []error{}

	// Move beetween views
	errs = append(errs, g.SetKeybinding("side", gocui.KeyTab, gocui.ModNone, nextView))
	//  errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlH, gocui.ModNone, previousView))
	//  errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlL, gocui.ModNone, nextView))
	//  errs = append(errs, g.SetKeybinding("side", gocui.KeyArrowRight, gocui.ModAlt, nextView))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyArrowDown, gocui.ModNone, cursorDown))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlJ, gocui.ModNone, cursorDown))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyArrowUp, gocui.ModNone, cursorUp))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlK, gocui.ModNone, cursorUp))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlD, gocui.ModNone, cursorPageDown))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlU, gocui.ModNone, cursorPageUp))
	errs = append(errs, g.SetKeybinding("side", gocui.KeySpace, gocui.ModNone, cursorPageDown))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyBackspace, gocui.ModNone, cursorPageUp))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyBackspace2, gocui.ModNone, cursorPageUp))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlN, gocui.ModNone, cursorDown))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyCtrlP, gocui.ModNone, cursorUp))
	errs = append(errs, g.SetKeybinding("side", gocui.KeyEnter, gocui.ModNone, nextView))

	//  errs = append(errs, g.SetKeybinding("msg", gocui.KeyEnter, gocui.ModNone, delMsg))
	//  errs = append(errs, g.SetKeybinding("side", gocui.KeyEnter, gocui.ModNone, showMsg))

	// summary
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyTab, gocui.ModNone, nextView))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlQ, gocui.ModNone, previousView))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlH, gocui.ModNone, previousView))
	//  errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlL, gocui.ModNone, nextView))
	//  errs = append(errs, g.SetKeybinding("summary", gocui.KeyArrowLeft, gocui.ModAlt, previousView))
	//  errs = append(errs, g.SetKeybinding("summary", gocui.KeyArrowDown, gocui.ModAlt, nextView))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyArrowDown, gocui.ModNone, cursorDown))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyArrowUp, gocui.ModNone, cursorUp))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlJ, gocui.ModNone, cursorDown))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlK, gocui.ModNone, cursorUp))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlD, gocui.ModNone, cursorPageDown))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlU, gocui.ModNone, cursorPageUp))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeySpace, gocui.ModNone, cursorPageDown))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyBackspace, gocui.ModNone, cursorPageUp))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyBackspace2, gocui.ModNone, cursorPageUp))
	//  errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlM, gocui.ModNone, cursorMoveMiddle))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyEnter, gocui.ModNone, nextView))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlN, gocui.ModNone, nextSummary))
	errs = append(errs, g.SetKeybinding("summary", gocui.KeyCtrlP, gocui.ModNone, previousSummary))

	// detail
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyTab, gocui.ModNone, nextView))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlQ, gocui.ModNone, previousView))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlH, gocui.ModNone, nextView))
	//  errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlL, gocui.ModNone, nextView))
	//  errs = append(errs, g.SetKeybinding("detail", gocui.KeyArrowUp, gocui.ModAlt, previousView))
	//  errs = append(errs, g.SetKeybinding("detail", gocui.KeyArrowLeft, gocui.ModAlt, nextView))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyArrowDown, gocui.ModNone, cursorDown))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyArrowUp, gocui.ModNone, cursorUp))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlJ, gocui.ModNone, cursorDown))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlK, gocui.ModNone, cursorUp))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlD, gocui.ModNone, cursorPageDown))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlU, gocui.ModNone, cursorPageUp))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeySpace, gocui.ModNone, cursorPageDown))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyBackspace, gocui.ModNone, cursorPageUp))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyBackspace2, gocui.ModNone, cursorPageUp))
	//  errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlM, gocui.ModNone, cursorMoveMiddle))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlN, gocui.ModNone, nextSummary))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyCtrlP, gocui.ModNone, previousSummary))
	errs = append(errs, g.SetKeybinding("detail", gocui.KeyEnter, gocui.ModNone, nextView))

	//  errs = append(errs, g.SetKeybinding("msg", gocui.KeyEnter, gocui.ModNone, delMsg))
	//  errs = append(errs, g.SetKeybinding("detail", gocui.KeyEnter, gocui.ModNone, showMsg))

	//TODO Help Ctrl-h

	errs = append(errs, g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit))
	//  errs = append(errs, g.SetKeybinding("side", gocui.KeyEnter, gocui.ModNone, getLine))
	//  errs = append(errs, g.SetKeybinding("msg", gocui.KeyEnter, gocui.ModNone, delMsg))

	for _, e := range errs {
		if e != nil {
			return e
		}
	}
	return nil
}

func nextView(g *gocui.Gui, v *gocui.View) error {
	if v == nil {
		return g.SetCurrentView("side")
	}
	switch v.Name() {
	case "side":
		return g.SetCurrentView("summary")
	case "summary":
		return g.SetCurrentView("detail")
	case "detail":
		return g.SetCurrentView("side")
	default:
		return g.SetCurrentView("summary")
	}
}

func previousView(g *gocui.Gui, v *gocui.View) error {
	if v == nil {
		return g.SetCurrentView("side")
	}
	switch v.Name() {
	case "side":
		return g.SetCurrentView("side")
	case "summary":
		return g.SetCurrentView("side")
	case "detail":
		return g.SetCurrentView("summary")
	default:
		return g.SetCurrentView("side")
	}
}

func movable(v *gocui.View, nextY int) (ok bool, yLimit int) {
	switch v.Name() {
	case "side":
		yLimit = len(scanHistory.ScanResults) - 1
		if yLimit < nextY {
			return false, yLimit
		}
		return true, yLimit
	case "summary":
		yLimit = len(currentScanResult.KnownCves) - 1
		if yLimit < nextY {
			return false, yLimit
		}
		return true, yLimit
	case "detail":
		if currentDetailLimitY < nextY {
			return false, currentDetailLimitY
		}
		return true, currentDetailLimitY
	default:
		return true, 0
	}
}

func pageUpDownJumpCount(v *gocui.View) int {
	var jump int
	switch v.Name() {
	case "side", "summary":
		jump = 8
	case "detail":
		jump = 30
	default:
		jump = 8
	}
	return jump
}

// redraw views
func onMovingCursorRedrawView(g *gocui.Gui, v *gocui.View) error {
	switch v.Name() {
	case "summary":
		if err := redrawDetail(g); err != nil {
			return err
		}
	case "side":
		if err := changeHost(g, v); err != nil {
			return err
		}
	}
	return nil
}

func cursorDown(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		cx, cy := v.Cursor()
		ox, oy := v.Origin()
		//  ok,  := movable(v, oy+cy+1)
		//  _, maxY := v.Size()
		ok, _ := movable(v, oy+cy+1)
		//  log.Info(cy, oy, maxY, yLimit)
		if !ok {
			return nil
		}
		if err := v.SetCursor(cx, cy+1); err != nil {
			if err := v.SetOrigin(ox, oy+1); err != nil {
				return err
			}
		}
		onMovingCursorRedrawView(g, v)
	}
	return nil
}

func cursorMoveTop(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		cx, _ := v.Cursor()
		v.SetCursor(cx, 0)
	}
	onMovingCursorRedrawView(g, v)
	return nil
}

func cursorMoveBottom(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		_, maxY := v.Size()
		cx, _ := v.Cursor()
		v.SetCursor(cx, maxY-1)
	}
	onMovingCursorRedrawView(g, v)
	return nil
}

func cursorMoveMiddle(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		_, maxY := v.Size()
		cx, _ := v.Cursor()
		v.SetCursor(cx, maxY/2)
	}
	onMovingCursorRedrawView(g, v)
	return nil
}

func cursorPageDown(g *gocui.Gui, v *gocui.View) error {
	jump := pageUpDownJumpCount(v)

	if v != nil {
		cx, cy := v.Cursor()
		ox, oy := v.Origin()
		ok, yLimit := movable(v, oy+cy+jump)
		_, maxY := v.Size()

		if !ok {
			if yLimit < maxY {
				v.SetCursor(cx, yLimit)
			} else {
				v.SetCursor(cx, maxY-1)
				v.SetOrigin(ox, yLimit-maxY+1)
			}
		} else if yLimit < oy+jump+maxY {
			if yLimit < maxY {
				v.SetCursor(cx, yLimit)
			} else {
				v.SetOrigin(ox, yLimit-maxY+1)
				v.SetCursor(cx, maxY-1)
			}
		} else {
			v.SetCursor(cx, cy)
			v.SetOrigin(ox, oy+jump)
		}
		onMovingCursorRedrawView(g, v)
	}
	return nil
}

func cursorUp(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		ox, oy := v.Origin()
		cx, cy := v.Cursor()
		if err := v.SetCursor(cx, cy-1); err != nil && 0 < oy {
			if err := v.SetOrigin(ox, oy-1); err != nil {
				return err
			}
		}
	}
	onMovingCursorRedrawView(g, v)
	return nil
}

func cursorPageUp(g *gocui.Gui, v *gocui.View) error {
	jump := pageUpDownJumpCount(v)
	if v != nil {
		cx, _ := v.Cursor()
		ox, oy := v.Origin()
		if err := v.SetOrigin(ox, oy-jump); err != nil {
			v.SetOrigin(ox, 0)
			v.SetCursor(cx, 0)

		}
		onMovingCursorRedrawView(g, v)
	}
	return nil
}

func previousSummary(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		// cursor to summary
		if err := g.SetCurrentView("summary"); err != nil {
			return err
		}
		// move next line
		if err := cursorUp(g, g.CurrentView()); err != nil {
			return err
		}
		// cursor to detail
		if err := g.SetCurrentView("detail"); err != nil {
			return err
		}
	}
	return nil
}

func nextSummary(g *gocui.Gui, v *gocui.View) error {
	if v != nil {
		// cursor to summary
		if err := g.SetCurrentView("summary"); err != nil {
			return err
		}
		// move next line
		if err := cursorDown(g, g.CurrentView()); err != nil {
			return err
		}
		// cursor to detail
		if err := g.SetCurrentView("detail"); err != nil {
			return err
		}
	}
	return nil
}

func changeHost(g *gocui.Gui, v *gocui.View) error {

	if err := g.DeleteView("summary"); err != nil {
		return err
	}
	if err := g.DeleteView("detail"); err != nil {
		return err
	}

	_, cy := v.Cursor()
	l, err := v.Line(cy)
	if err != nil {
		return err
	}
	serverName := strings.TrimSpace(l)

	for _, r := range scanHistory.ScanResults {
		if serverName == strings.TrimSpace(r.ServerInfoTui()) {
			currentScanResult = r
			break
		}
	}

	if err := setSummaryLayout(g); err != nil {
		return err
	}
	if err := setDetailLayout(g); err != nil {
		return err
	}
	return nil
}

func redrawDetail(g *gocui.Gui) error {
	if err := g.DeleteView("detail"); err != nil {
		return err
	}

	if err := setDetailLayout(g); err != nil {
		return err
	}
	return nil
}

func getLine(g *gocui.Gui, v *gocui.View) error {
	var l string
	var err error

	_, cy := v.Cursor()
	if l, err = v.Line(cy); err != nil {
		l = ""
	}

	maxX, maxY := g.Size()
	if v, err := g.SetView("msg", maxX/2-30, maxY/2, maxX/2+30, maxY/2+2); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		fmt.Fprintln(v, l)
		if err := g.SetCurrentView("msg"); err != nil {
			return err
		}
	}
	return nil
}

func showMsg(g *gocui.Gui, v *gocui.View) error {
	jump := 8
	_, cy := v.Cursor()
	_, oy := v.Origin()
	ok, yLimit := movable(v, oy+cy+jump)
	//  maxX, maxY := v.Size()
	_, maxY := v.Size()

	l := fmt.Sprintf("cy: %d, oy: %d, maxY: %d, yLimit: %d, curCve %d, ok: %v", cy, oy, maxY, yLimit, currentCveInfo, ok)
	//  if v, err := g.SetView("msg", maxX/2-30, maxY/2, maxX/2+30, maxY/2+2); err != nil {
	if v, err := g.SetView("msg", 10, maxY/2, 10+50, maxY/2+2); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		fmt.Fprintln(v, l)
		if err := g.SetCurrentView("msg"); err != nil {
			return err
		}
	}
	return nil
}

func delMsg(g *gocui.Gui, v *gocui.View) error {
	if err := g.DeleteView("msg"); err != nil {
		return err
	}
	if err := g.SetCurrentView("summary"); err != nil {
		return err
	}
	return nil
}

func quit(g *gocui.Gui, v *gocui.View) error {
	return gocui.ErrQuit
}

func layout(g *gocui.Gui) error {
	if err := setSideLayout(g); err != nil {
		return err
	}
	if err := setSummaryLayout(g); err != nil {
		return err
	}
	if err := setDetailLayout(g); err != nil {
		return err
	}
	return nil
}

func setSideLayout(g *gocui.Gui) error {
	_, maxY := g.Size()
	if v, err := g.SetView("side", -1, -1, 40, maxY); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		v.Highlight = true

		for _, result := range scanHistory.ScanResults {
			fmt.Fprintln(v, result.ServerInfoTui())
		}
		currentScanResult = scanHistory.ScanResults[0]
		if err := g.SetCurrentView("side"); err != nil {
			return err
		}
	}
	return nil
}

func setSummaryLayout(g *gocui.Gui) error {
	maxX, maxY := g.Size()
	if v, err := g.SetView("summary", 40, -1, maxX, int(float64(maxY)*0.2)); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}

		lines := summaryLines(currentScanResult)
		fmt.Fprintf(v, lines)

		v.Highlight = true
		v.Editable = false
		v.Wrap = false
	}
	return nil
}

func summaryLines(data models.ScanResult) string {
	stable := uitable.New()
	stable.MaxColWidth = 1000
	stable.Wrap = false

	indexFormat := ""
	if len(data.KnownCves) < 10 {
		indexFormat = "[%1d]"
	} else if len(data.KnownCves) < 100 {
		indexFormat = "[%2d]"
	} else {
		indexFormat = "[%3d]"
	}

	for i, d := range data.KnownCves {
		var cols []string
		//  packs := []string{}
		//  for _, pack := range d.Packages {
		//      packs = append(packs, pack.Name)
		//  }
		if config.Conf.Lang == "ja" && 0 < d.CveDetail.Jvn.CvssScore() {
			summary := d.CveDetail.Jvn.CveTitle()
			cols = []string{
				fmt.Sprintf(indexFormat, i+1),
				d.CveDetail.CveID,
				fmt.Sprintf("|  %-4.1f(%s)",
					d.CveDetail.CvssScore(config.Conf.Lang),
					d.CveDetail.Jvn.CvssSeverity(),
				),
				//  strings.Join(packs, ","),
				summary,
			}
		} else {
			summary := d.CveDetail.Nvd.CveSummary()

			var cvssScore string
			if d.CveDetail.CvssScore("en") <= 0 {
				cvssScore = "| ?"
			} else {
				cvssScore = fmt.Sprintf("| %-4.1f(%s)",
					d.CveDetail.CvssScore(config.Conf.Lang),
					d.CveDetail.Nvd.CvssSeverity(),
				)
			}

			cols = []string{
				fmt.Sprintf(indexFormat, i+1),
				d.CveDetail.CveID,
				cvssScore,
				summary,
			}
		}

		icols := make([]interface{}, len(cols))
		for j := range cols {
			icols[j] = cols[j]
		}
		stable.AddRow(icols...)
	}
	return fmt.Sprintf("%s", stable)
}

func setDetailLayout(g *gocui.Gui) error {
	maxX, maxY := g.Size()

	summaryView, err := g.View("summary")
	if err != nil {
		return err
	}
	_, cy := summaryView.Cursor()
	_, oy := summaryView.Origin()
	currentCveInfo = cy + oy

	if v, err := g.SetView("detail", 40, int(float64(maxY)*0.2), maxX, maxY); err != nil {
		if err != gocui.ErrUnknownView {
			return err
		}
		//  text := report.ToPlainTextDetailsLangEn(
		//      currentScanResult.KnownCves[currentCveInfo],
		//      currentScanResult.Family)

		text, err := detailLines()
		if err != nil {
			return err
		}
		fmt.Fprint(v, text)
		v.Editable = false
		v.Wrap = true

		currentDetailLimitY = len(strings.Split(text, "\n")) - 1
	}
	return nil
}

type dataForTmpl struct {
	CveID            string
	CvssScore        string
	CvssVector       string
	CvssSeverity     string
	Summary          string
	VulnSiteLinks    []string
	References       []cve.Reference
	Packages         []string
	CpeNames         []models.CpeName
	PublishedDate    time.Time
	LastModifiedDate time.Time
}

func detailLines() (string, error) {
	if len(currentScanResult.KnownCves) == 0 {
		return "No vulnerable packages", nil
	}

	cveInfo := currentScanResult.KnownCves[currentCveInfo]
	cveID := cveInfo.CveDetail.CveID

	tmpl, err := template.New("detail").Parse(detailTemplate())
	if err != nil {
		return "", err
	}

	var cvssSeverity, cvssVector, summary string
	var refs []cve.Reference
	switch {
	case config.Conf.Lang == "ja" &&
		0 < cveInfo.CveDetail.Jvn.CvssScore():
		jvn := cveInfo.CveDetail.Jvn
		cvssSeverity = jvn.CvssSeverity()
		cvssVector = jvn.CvssVector()
		summary = fmt.Sprintf("%s\n%s", jvn.CveTitle(), jvn.CveSummary())
		refs = jvn.VulnSiteReferences()
	default:
		nvd := cveInfo.CveDetail.Nvd
		cvssSeverity = nvd.CvssSeverity()
		cvssVector = nvd.CvssVector()
		summary = nvd.CveSummary()
		refs = nvd.VulnSiteReferences()
	}

	links := []string{
		fmt.Sprintf("[NVD]( %s )", fmt.Sprintf("%s?vulnId=%s", nvdBaseURL, cveID)),
		fmt.Sprintf("[MITRE]( %s )", fmt.Sprintf("%s%s", mitreBaseURL, cveID)),
		fmt.Sprintf("[CveDetais]( %s )", fmt.Sprintf("%s/%s", cveDetailsBaseURL, cveID)),
		fmt.Sprintf("[CVSSv2 Caluclator]( %s )", fmt.Sprintf(cvssV2CalcURLTemplate, cveID, cvssVector)),
	}
	dlinks := distroLinks(cveInfo, currentScanResult.Family)
	for _, link := range dlinks {
		links = append(links, fmt.Sprintf("[%s]( %s )", link.title, link.url))
	}

	var cvssScore string
	if cveInfo.CveDetail.CvssScore(config.Conf.Lang) == -1 {
		cvssScore = "?"
	} else {
		cvssScore = fmt.Sprintf("%4.1f", cveInfo.CveDetail.CvssScore(config.Conf.Lang))
	}

	packages := []string{}
	for _, pack := range cveInfo.Packages {
		packages = append(packages,
			fmt.Sprintf(
				"%s -> %s",
				pack.ToStringCurrentVersion(),
				pack.ToStringNewVersion()))
	}

	data := dataForTmpl{
		CveID:         cveID,
		CvssScore:     cvssScore,
		CvssSeverity:  cvssSeverity,
		CvssVector:    cvssVector,
		Summary:       summary,
		VulnSiteLinks: links,
		References:    refs,
		Packages:      packages,
		CpeNames:      cveInfo.CpeNames,
	}

	buf := bytes.NewBuffer(nil) // create empty buffer
	if err := tmpl.Execute(buf, data); err != nil {
		return "", err
	}

	return string(buf.Bytes()), nil
}

//  * {{.Name}}-{{.Version}}-{{.Release}}

func detailTemplate() string {
	return `
{{.CveID}}
==============

CVSS Score
--------------

{{.CvssScore}} ({{.CvssSeverity}}) {{.CvssVector}}

Summary
--------------

 {{.Summary }}

Package/CPE
--------------

{{range $pack := .Packages -}}
* {{$pack}}
{{end -}}
{{range .CpeNames -}}
* {{.Name}}
{{end}}
Links
--------------

{{range $link := .VulnSiteLinks -}}
* {{$link}}
{{end}}
References
--------------

{{range .References -}}
* [{{.Source}}]( {{.Link}} )
{{end}}

`
}