feat(backend): sort logs with modification date

1 files changed, 25 insertions, 7 deletions

diff --git a/backend/logs.go b/backend/logs.go
index ef44e0a..50caec1 100644
--- a/backend/logs.go
+++ b/backend/logs.go
@@ -4,12 +4,14 @@ import (
 	"errors"
 	"fmt"
 	"html/template"
+	"io/fs"
 	"log/slog"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
 	"sync"
+	"time"
 
 	"git.anhgelus.world/anhgelus/small-world/markdown"
 	"github.com/go-chi/chi/v5"
@@ -28,6 +30,7 @@ type logData struct {
 	pubDate     toml.LocalDate `toml:"publication_date"`
 	Content     template.HTML  `toml:"-"`
 	Slug        string         `toml:"-"`
+	ModAt       time.Time      `toml:"-"`
 }
 
 func (d *logData) SetData(dt *data) {
@@ -35,7 +38,7 @@ func (d *logData) SetData(dt *data) {
 }
 
 func (d *logData) PubDate() string {
-	return d.pubDate.String()
+	return d.ModAt.Format(time.DateOnly)
 }
 
 type image struct {
@@ -90,16 +93,22 @@ func readLogDir(path string, dir []os.DirEntry) error {
 			}
 			dd := new(logData)
 			dd.data = new(data)
-			go func() {
-				wg.Add(1)
+
+			wg.Add(1)
+			go func(p string, d os.DirEntry) {
 				defer wg.Done()
-				ok = parseLog(dd, slug, strings.TrimSuffix(d.Name(), ".md"))
+				fi, err := d.Info()
+				if err != nil {
+					slog.Warn("cannot get file info", "path", p)
+					return
+				}
+				ok = parseLog(dd, slug, strings.TrimSuffix(d.Name(), ".md"), fi)
 				if ok {
 					slog.Debug("log parsed", "path", p)
 				} else {
 					slog.Debug("log skipped", "path", p)
 				}
-			}()
+			}(p, d)
 		}
 	}
 	wg.Wait()
@@ -125,7 +134,15 @@ func handleLog(w http.ResponseWriter, r *http.Request) {
 	if !ok {
 		d = new(logData)
 		d.data = new(data)
-		if ok = parseLog(d, path, slug); !ok {
+		fi, err := os.Stat(path)
+		if err != nil {
+			if !os.IsNotExist(err) {
+				panic(err)
+			}
+			http.NotFoundHandler().ServeHTTP(w, r)
+			return
+		}
+		if ok = parseLog(d, path, slug, fi); !ok {
 			http.NotFoundHandler().ServeHTTP(w, r)
 			return
 		}
@@ -133,11 +150,12 @@ func handleLog(w http.ResponseWriter, r *http.Request) {
 	d.handleGeneric(w, r, "log", d)
 }
 
-func parseLog(d *logData, path, slug string) bool {
+func parseLog(d *logData, path, slug string, fi fs.FileInfo) bool {
 	d.Article = true
 	d.LogTitle = slug
 	d.title = slug
 	d.Slug = slug
+	d.ModAt = fi.ModTime()
 	b, err := os.ReadFile(path + ".md")
 	if err != nil {
 		if os.IsNotExist(err) {