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package renderer
import (
"context"
"io"
"strconv"
"strings"
"text/template"
"time"
"mastodon"
)
type Renderer interface {
RenderErrorPage(ctx context.Context, writer io.Writer, err error)
RenderHomePage(ctx context.Context, writer io.Writer) (err error)
RenderSigninPage(ctx context.Context, writer io.Writer) (err error)
RenderTimelinePage(ctx context.Context, writer io.Writer, data *TimelinePageTemplateData) (err error)
RenderThreadPage(ctx context.Context, writer io.Writer, data *ThreadPageTemplateData) (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{
"WithEmojis": WithEmojis,
"DisplayInteractionCount": DisplayInteractionCount,
"TimeSince": TimeSince,
"FormatTimeRFC3339": FormatTimeRFC3339,
}).ParseGlob(templateGlobPattern)
if err != nil {
return
}
return &renderer{
template: t,
}, nil
}
func (r *renderer) RenderErrorPage(ctx context.Context, writer io.Writer, err error) {
r.template.ExecuteTemplate(writer, "error.tmpl", err)
return
}
func (r *renderer) RenderHomePage(ctx context.Context, writer io.Writer) (err error) {
return r.template.ExecuteTemplate(writer, "homepage.tmpl", nil)
}
func (r *renderer) RenderSigninPage(ctx context.Context, writer io.Writer) (err error) {
return r.template.ExecuteTemplate(writer, "signin.tmpl", nil)
}
func (r *renderer) RenderTimelinePage(ctx context.Context, writer io.Writer, data *TimelinePageTemplateData) (err error) {
return r.template.ExecuteTemplate(writer, "timeline.tmpl", data)
}
func (r *renderer) RenderThreadPage(ctx context.Context, writer io.Writer, data *ThreadPageTemplateData) (err error) {
return r.template.ExecuteTemplate(writer, "thread.tmpl", data)
}
func WithEmojis(content string, emojis []mastodon.Emoji) string {
var emojiNameContentPair []string
for _, e := range emojis {
emojiNameContentPair = append(emojiNameContentPair, ":"+e.ShortCode+":", "<img class=\"status-emoji\" src=\""+e.URL+"\" alt=\""+e.ShortCode+"\" />")
}
return strings.NewReplacer(emojiNameContentPair...).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 := m / 12
return strconv.Itoa(int(y)) + "y"
}
func FormatTimeRFC3339(t time.Time) string {
return t.Format(time.RFC3339)
}
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