// Copyright 2018 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

//go:generate bash -c "echo '// AUTOGENERATED FILE' > generated.go"
//go:generate bash -c "echo 'package html' > generated.go"
//go:generate bash -c "echo 'const style = `' >> generated.go"
//go:generate bash -c "cat ../../dashboard/app/static/style.css >> generated.go"
//go:generate bash -c "echo '`' >> generated.go"
//go:generate bash -c "echo 'const js = `' >> generated.go"
//go:generate bash -c "cat ../../dashboard/app/static/common.js >> generated.go"
//go:generate bash -c "echo '`' >> generated.go"

package html

import (
	"fmt"
	"html/template"
	"strings"
	"time"

	"github.com/google/syzkaller/dashboard/dashapi"
)

func CreatePage(page string) *template.Template {
	const headTempl = `<style type="text/css" media="screen">%v</style><script>%v</script>`
	page = strings.Replace(page, "{{HEAD}}", fmt.Sprintf(headTempl, style, js), 1)
	return template.Must(template.New("").Funcs(funcs).Parse(page))
}

func CreateGlob(glob string) *template.Template {
	return template.Must(template.New("").Funcs(funcs).ParseGlob(glob))
}

var funcs = template.FuncMap{
	"link":             link,
	"formatTime":       FormatTime,
	"formatClock":      formatClock,
	"formatDuration":   formatDuration,
	"formatLateness":   formatLateness,
	"formatReproLevel": formatReproLevel,
	"formatStat":       formatStat,
	"formatShortHash":  formatShortHash,
}

func link(url, text string) template.HTML {
	text = template.HTMLEscapeString(text)
	if url != "" {
		text = fmt.Sprintf(`<a href="%v">%v</a>`, url, text)
	}
	return template.HTML(text)
}

func FormatTime(t time.Time) string {
	if t.IsZero() {
		return ""
	}
	return t.Format("2006/01/02 15:04")
}

func formatClock(t time.Time) string {
	if t.IsZero() {
		return ""
	}
	return t.Format("15:04")
}

func formatDuration(d time.Duration) string {
	if d == 0 {
		return ""
	}
	days := int(d / (24 * time.Hour))
	hours := int(d / time.Hour % 24)
	mins := int(d / time.Minute % 60)
	if days >= 10 {
		return fmt.Sprintf("%vd", days)
	} else if days != 0 {
		return fmt.Sprintf("%vd%02vh", days, hours)
	} else if hours != 0 {
		return fmt.Sprintf("%vh%02vm", hours, mins)
	}
	return fmt.Sprintf("%vm", mins)
}

func formatLateness(now, t time.Time) string {
	if t.IsZero() {
		return "never"
	}
	d := now.Sub(t)
	if d < 5*time.Minute {
		return "now"
	}
	return formatDuration(d)
}

func formatReproLevel(l dashapi.ReproLevel) string {
	switch l {
	case dashapi.ReproLevelSyz:
		return "syz"
	case dashapi.ReproLevelC:
		return "C"
	default:
		return ""
	}
}

func formatStat(v int64) string {
	if v == 0 {
		return ""
	}
	return fmt.Sprint(v)
}

func formatShortHash(v string) string {
	const hashLen = 8
	if len(v) <= hashLen {
		return v
	}
	return v[:hashLen]
}