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package renderer
import (
"fmt"
"io"
"strconv"
"strings"
"text/template"
"time"
"mastodon"
)
type TemplateData struct {
Data interface{}
Ctx *Context
}
type Renderer interface {
RenderSigninPage(ctx *Context, writer io.Writer, data *SigninData) (err error)
RenderErrorPage(ctx *Context, writer io.Writer, data *ErrorData)
RenderTimelinePage(ctx *Context, writer io.Writer, data *TimelineData) (err error)
RenderThreadPage(ctx *Context, writer io.Writer, data *ThreadData) (err error)
RenderNotificationPage(ctx *Context, writer io.Writer, data *NotificationData) (err error)
RenderUserPage(ctx *Context, writer io.Writer, data *UserData) (err error)
RenderUserSearchPage(ctx *Context, writer io.Writer, data *UserSearchData) (err error)
RenderAboutPage(ctx *Context, writer io.Writer, data *AboutData) (err error)
RenderEmojiPage(ctx *Context, writer io.Writer, data *EmojiData) (err error)
RenderLikedByPage(ctx *Context, writer io.Writer, data *LikedByData) (err error)
RenderRetweetedByPage(ctx *Context, writer io.Writer, data *RetweetedByData) (err error)
RenderSearchPage(ctx *Context, writer io.Writer, data *SearchData) (err error)
RenderSettingsPage(ctx *Context, writer io.Writer, data *SettingsData) (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,
"FormatTimeRFC3339": FormatTimeRFC3339,
"FormatTimeRFC822": FormatTimeRFC822,
"WithContext": WithContext,
}).ParseGlob(templateGlobPattern)
if err != nil {
return
}
return &renderer{
template: t,
}, nil
}
func (r *renderer) RenderSigninPage(ctx *Context, writer io.Writer,
signinData *SigninData) (err error) {
return r.template.ExecuteTemplate(writer, "signin.tmpl", WithContext(signinData, ctx))
}
func (r *renderer) RenderErrorPage(ctx *Context, writer io.Writer,
errorData *ErrorData) {
r.template.ExecuteTemplate(writer, "error.tmpl", WithContext(errorData, ctx))
return
}
func (r *renderer) RenderTimelinePage(ctx *Context, writer io.Writer,
data *TimelineData) (err error) {
return r.template.ExecuteTemplate(writer, "timeline.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderThreadPage(ctx *Context, writer io.Writer,
data *ThreadData) (err error) {
return r.template.ExecuteTemplate(writer, "thread.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderNotificationPage(ctx *Context, writer io.Writer,
data *NotificationData) (err error) {
return r.template.ExecuteTemplate(writer, "notification.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderUserPage(ctx *Context, writer io.Writer,
data *UserData) (err error) {
return r.template.ExecuteTemplate(writer, "user.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderUserSearchPage(ctx *Context, writer io.Writer,
data *UserSearchData) (err error) {
return r.template.ExecuteTemplate(writer, "usersearch.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderAboutPage(ctx *Context, writer io.Writer,
data *AboutData) (err error) {
return r.template.ExecuteTemplate(writer, "about.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderEmojiPage(ctx *Context, writer io.Writer,
data *EmojiData) (err error) {
return r.template.ExecuteTemplate(writer, "emoji.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderLikedByPage(ctx *Context, writer io.Writer,
data *LikedByData) (err error) {
return r.template.ExecuteTemplate(writer, "likedby.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderRetweetedByPage(ctx *Context, writer io.Writer,
data *RetweetedByData) (err error) {
return r.template.ExecuteTemplate(writer, "retweetedby.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderSearchPage(ctx *Context, writer io.Writer,
data *SearchData) (err error) {
return r.template.ExecuteTemplate(writer, "search.tmpl", WithContext(data, ctx))
}
func (r *renderer) RenderSettingsPage(ctx *Context, writer io.Writer,
data *SettingsData) (err error) {
return r.template.ExecuteTemplate(writer, "settings.tmpl", WithContext(data, ctx))
}
func EmojiFilter(content string, emojis []mastodon.Emoji) string {
var replacements []string
var r string
for _, e := range emojis {
r = fmt.Sprintf("<img class=\"status-emoji\" src=\"%s\" alt=\"%s\" title=\"%s\" />",
e.URL, e.ShortCode, e.ShortCode)
replacements = append(replacements, ":"+e.ShortCode+":", r)
}
return strings.NewReplacer(replacements...).Replace(content)
}
func StatusContentFilter(spoiler string, content string,
emojis []mastodon.Emoji, mentions []mastodon.Mention) string {
var replacements []string
var r string
if len(spoiler) > 0 {
content = spoiler + "<br />" + content
}
for _, e := range emojis {
r = fmt.Sprintf("<img class=\"status-emoji\" src=\"%s\" alt=\"%s\" title=\"%s\" />",
e.URL, e.ShortCode, e.ShortCode)
replacements = append(replacements, ":"+e.ShortCode+":", r)
}
for _, m := range mentions {
replacements = append(replacements, "\""+m.URL+"\"", "\"/user/"+m.ID+"\"")
}
return strings.NewReplacer(replacements...).Replace(content)
}
func DisplayInteractionCount(c int64) string {
if c > 0 {
return strconv.Itoa(int(c))
}
return ""
}
func TimeSince(t time.Time) string {
dur := time.Since(t)
s := dur.Seconds()
if s < 60 {
return strconv.Itoa(int(s)) + "s"
}
m := dur.Minutes()
if m < 60 {
return strconv.Itoa(int(m)) + "m"
}
h := dur.Hours()
if h < 24 {
return strconv.Itoa(int(h)) + "h"
}
d := h / 24
if d < 30 {
return strconv.Itoa(int(d)) + "d"
}
mo := d / 30
if mo < 12 {
return strconv.Itoa(int(mo)) + "mo"
}
y := mo / 12
return strconv.Itoa(int(y)) + "y"
}
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}
}
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