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gosocial/pkg/templates/template_funcs.go

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package templates
import (
"fmt"
"html/template"
"net/http"
"strings"
"time"
"git.kirsle.net/apps/gosocial/pkg/config"
"git.kirsle.net/apps/gosocial/pkg/markdown"
"git.kirsle.net/apps/gosocial/pkg/session"
"git.kirsle.net/apps/gosocial/pkg/utility"
)
// TemplateFuncs available to all pages.
func TemplateFuncs(r *http.Request) template.FuncMap {
return template.FuncMap{
"InputCSRF": InputCSRF(r),
"SincePrettyCoarse": SincePrettyCoarse(),
"ComputeAge": utility.Age,
"Split": strings.Split,
"ToMarkdown": ToMarkdown,
}
}
// InputCSRF returns the HTML snippet for a CSRF token hidden input field.
func InputCSRF(r *http.Request) func() template.HTML {
return func() template.HTML {
ctx := r.Context()
if token, ok := ctx.Value(session.CSRFKey).(string); ok {
return template.HTML(fmt.Sprintf(
`<input type="hidden" name="%s" value="%s">`,
config.CSRFInputName,
token,
))
} else {
return template.HTML(`[CSRF middleware error]`)
}
}
}
// SincePrettyCoarse formats a time.Duration in plain English. Intended for "joined 2 months ago" type
// strings - returns the coarsest level of granularity.
func SincePrettyCoarse() func(time.Time) template.HTML {
var result = func(text string, v int64) template.HTML {
if v == 1 {
text = strings.TrimSuffix(text, "s")
}
return template.HTML(fmt.Sprintf(text, v))
}
return func(since time.Time) template.HTML {
var (
duration = time.Since(since)
)
if duration.Seconds() < 60.0 {
return result("%d seconds", int64(duration.Seconds()))
}
if duration.Minutes() < 60.0 {
return result("%d minutes", int64(duration.Minutes()))
}
if duration.Hours() < 24.0 {
return result("%d hours", int64(duration.Hours()))
}
days := int64(duration.Hours() / 24)
if days < 30 {
return result("%d days", days)
}
months := int64(days / 30)
if months < 12 {
return result("%d months", months)
}
years := int64(days / 365)
return result("%d years", years)
}
}
// ToMarkdown renders input text as Markdown.
func ToMarkdown(input string) template.HTML {
return template.HTML(markdown.Render(input))
}