bloat/renderer/renderer.go
2022-01-27 11:41:31 +00:00

162 lines
3.8 KiB
Go

package renderer
import (
"io"
"regexp"
"strconv"
"strings"
"text/template"
"time"
"bloat/mastodon"
)
type Page string
const (
SigninPage = "signin.tmpl"
ErrorPage = "error.tmpl"
NavPage = "nav.tmpl"
RootPage = "root.tmpl"
TimelinePage = "timeline.tmpl"
ThreadPage = "thread.tmpl"
QuickReplyPage = "quickreply.tmpl"
NotificationPage = "notification.tmpl"
UserPage = "user.tmpl"
UserSearchPage = "usersearch.tmpl"
AboutPage = "about.tmpl"
EmojiPage = "emoji.tmpl"
LikedByPage = "likedby.tmpl"
RetweetedByPage = "retweetedby.tmpl"
SearchPage = "search.tmpl"
SettingsPage = "settings.tmpl"
FiltersPage = "filters.tmpl"
)
type TemplateData struct {
Data interface{}
Ctx *Context
}
func emojiHTML(e mastodon.Emoji, height string) string {
return `<img class="emoji" src="` + e.URL + `" alt=":` + e.ShortCode + `:" title=":` + e.ShortCode + `:" height="` + height + `"/>`
}
func emojiFilter(content string, emojis []mastodon.Emoji) string {
var replacements []string
for _, e := range emojis {
replacements = append(replacements, ":"+e.ShortCode+":", emojiHTML(e, "24"))
}
return strings.NewReplacer(replacements...).Replace(content)
}
var quoteRE = regexp.MustCompile("(?mU)(^|> *|\n)(&gt;.*)(<br|$)")
func statusContentFilter(spoiler, content string, emojis []mastodon.Emoji, mentions []mastodon.Mention) string {
if len(spoiler) > 0 {
content = spoiler + "<br/>" + content
}
content = quoteRE.ReplaceAllString(content, `$1<span class="quote">$2</span>$3`)
var replacements []string
for _, e := range emojis {
replacements = append(replacements, ":"+e.ShortCode+":", emojiHTML(e, "32"))
}
for _, m := range mentions {
replacements = append(replacements, `"`+m.URL+`"`, `"/user/`+m.ID+`" title="@`+m.Acct+`"`)
}
return strings.NewReplacer(replacements...).Replace(content)
}
func displayInteractionCount(c int64) string {
if c > 0 {
return strconv.Itoa(int(c))
}
return ""
}
func DurToStr(dur time.Duration) string {
s := dur.Seconds()
if s < 60 {
return strconv.Itoa(int(s)) + "s"
}
m := dur.Minutes()
if m < 60*2 {
return strconv.Itoa(int(m)) + "m"
}
h := dur.Hours()
if h < 24*2 {
return strconv.Itoa(int(h)) + "h"
}
d := h / 24
if d < 30*2 {
return strconv.Itoa(int(d)) + "d"
}
mo := d / 30
if mo < 12*2 {
return strconv.Itoa(int(mo)) + "mo"
}
y := mo / 12
return strconv.Itoa(int(y)) + "y"
}
func timeSince(t time.Time) string {
d := time.Since(t)
if d < 0 {
d = 0
}
return DurToStr(d)
}
func timeUntil(t time.Time) string {
d := time.Until(t)
if d < 0 {
d = 0
}
return DurToStr(d)
}
func formatTimeRFC3339(t time.Time) string {
return t.Format(time.RFC3339)
}
func formatTimeRFC822(t time.Time) string {
return t.Format(time.RFC822)
}
func withContext(data interface{}, ctx *Context) TemplateData {
return TemplateData{data, ctx}
}
type Renderer interface {
Render(ctx *Context, writer io.Writer, page string, data interface{}) (err error)
}
type renderer struct {
template *template.Template
}
func NewRenderer(templateGlobPattern string) (r *renderer, err error) {
t := template.New("default")
t, err = t.Funcs(template.FuncMap{
"EmojiFilter": emojiFilter,
"StatusContentFilter": statusContentFilter,
"DisplayInteractionCount": displayInteractionCount,
"TimeSince": timeSince,
"TimeUntil": timeUntil,
"FormatTimeRFC3339": formatTimeRFC3339,
"FormatTimeRFC822": formatTimeRFC822,
"WithContext": withContext,
}).ParseGlob(templateGlobPattern)
if err != nil {
return
}
return &renderer{
template: t,
}, nil
}
func (r *renderer) Render(ctx *Context, writer io.Writer,
page string, data interface{}) (err error) {
return r.template.ExecuteTemplate(writer, page, withContext(data, ctx))
}