feat: add expiration time in the note web view

Fixes #35.

Signed-off-by: Julien Riou <julien@riou.xyz>

src/internal/utils.go

@@ -9,6 +9,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"time"
 )
 
 func ReadConfig(file string, config interface{}) error {
@@ -102,6 +103,15 @@ func HumanDuration(i int) string {
 	return fmt.Sprintf("%d %s", i, w)
 }
 
+// TimeDiff to return the number of seconds between this time and now
+func TimeDiff(ts time.Time) int {
+	diff := int(time.Since(ts).Seconds())
+	if diff < 0 {
+		return diff * -1
+	}
+	return diff
+}
+
 func ReturnError(logger *slog.Logger, message string, err error) int {
 	if err != nil {
 		logger.Error(message, slog.Any("error", err))

src/server/server.go

@@ -106,6 +106,7 @@ func (s *Server) Start() error {
 	// Web pages
 	funcs := template.FuncMap{
 		"HumanDuration": internal.HumanDuration,
+		"TimeDiff":      internal.TimeDiff,
 		"lower":         strings.ToLower,
 		"string":        func(b []byte) string { return string(b) },
 	}

src/server/templates/note.html

@@ -19,13 +19,18 @@
         <div class="d-flex flex-wrap py-2">
             <span class="fs-4 d-flex mb-3 mb-md-0 me-md-auto text-decoration-none">Note {{.Note.ID}}</span>
             <ul class="nav nav-pills align-items-center">
-                <li class="nav-item">
+                <li class="nav-item px-2">
                     <a href="" id="rawURL">raw</a>
                     <script>document.getElementById("rawURL").href = window.location.href.replace(".html", "");</script>
                 </li>
                 <li class="nav-item px-2">
                     {{.Note.Language}}
                 </li>
+                {{if eq .Note.DeleteAfterRead false}}
+                <li class="nav-item px-2">
+                    expires in {{HumanDuration (TimeDiff .Note.ExpiresAt)}}
+                </li>
+                {{end}}
             </ul>
         </div>
         <div class="row">