Add "On this Day" redirect

config.go

@@ -85,6 +85,7 @@ type configBlog struct {
 	Telegram       *configTelegram           `mapstructure:"telegram"`
 	PostAsHome     bool                      `mapstructure:"postAsHome"`
 	RandomPost     *configRandomPost         `mapstructure:"randomPost"`
+	OnThisDay      *configOnThisDay          `mapstructure:"onThisDay"`
 	Comments       *configComments           `mapstructure:"comments"`
 	Map            *configGeoMap             `mapstructure:"map"`
 	Contact        *configContact            `mapstructure:"contact"`
@@ -160,6 +161,11 @@ type configRandomPost struct {
 	Path    string `mapstructure:"path"`
 }
 
+type configOnThisDay struct {
+	Enabled bool   `mapstructure:"enabled"`
+	Path    string `mapstructure:"path"`
+}
+
 type configComments struct {
 	Enabled bool `mapstructure:"enabled"`
 }

example-config.yml

@@ -235,6 +235,10 @@ blogs:
     randomPost:
       enabled: true # Enable
       path: /random # Path
+    # Redirect to archive of the current day in previous years
+    onThisDay:
+      enabled: true # Enable
+      path: /onthisday # Path
     # Send notifications about new posts to Telegram channel
     telegram:
       enabled: true # Enable

httpRouters.go

@@ -134,6 +134,9 @@ func (a *goBlog) blogRouter(blog string, conf *configBlog) func(r chi.Router) {
 		// Random post
 		r.Group(a.blogRandomRouter(conf))
 
+		// On this day
+		r.Group(a.blogOnThisDayRouter(conf))
+
 		// Editor
 		r.Route(conf.getRelativePath(editorPath), a.blogEditorRouter(conf))
 
@@ -319,7 +322,16 @@ func (a *goBlog) blogCustomPagesRouter(conf *configBlog) func(r chi.Router) {
 func (a *goBlog) blogRandomRouter(conf *configBlog) func(r chi.Router) {
 	return func(r chi.Router) {
 		if rp := conf.RandomPost; rp != nil && rp.Enabled {
-			r.With(a.privateModeHandler).Get(conf.getRelativePath(defaultIfEmpty(rp.Path, "/random")), a.redirectToRandomPost)
+			r.With(a.privateModeHandler).Get(conf.getRelativePath(defaultIfEmpty(rp.Path, defaultRandomPath)), a.redirectToRandomPost)
+		}
+	}
+}
+
+// Blog - On this day
+func (a *goBlog) blogOnThisDayRouter(conf *configBlog) func(r chi.Router) {
+	return func(r chi.Router) {
+		if otd := conf.OnThisDay; otd != nil && otd.Enabled {
+			r.With(a.privateModeHandler).Get(conf.getRelativePath(defaultIfEmpty(otd.Path, defaultOnThisDayPath)), a.redirectToOnThisDay)
 		}
 	}
 }

posts.go

@@ -10,6 +10,7 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"time"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/vcraescu/go-paginator"
@@ -89,6 +90,8 @@ func (a *goBlog) servePost(w http.ResponseWriter, r *http.Request) {
 	})
 }
 
+const defaultRandomPath = "/random"
+
 func (a *goBlog) redirectToRandomPost(rw http.ResponseWriter, r *http.Request) {
 	blog, _ := a.getBlog(r)
 	randomPath, err := a.getRandomPostPath(blog)
@@ -99,6 +102,21 @@ func (a *goBlog) redirectToRandomPost(rw http.ResponseWriter, r *http.Request) {
 	http.Redirect(rw, r, randomPath, http.StatusFound)
 }
 
+const defaultOnThisDayPath = "/onthisday"
+
+func (a *goBlog) redirectToOnThisDay(w http.ResponseWriter, r *http.Request) {
+	_, bc := a.getBlog(r)
+	// Get current local month and day
+	now := time.Now()
+	month := now.Month()
+	day := now.Day()
+	// Build the path
+	targetPath := fmt.Sprintf("/x/%02d/%02d", month, day)
+	targetPath = bc.getRelativePath(targetPath)
+	// Redirect
+	http.Redirect(w, r, targetPath, http.StatusFound)
+}
+
 type postPaginationAdapter struct {
 	config *postsRequestConfig
 	nums   int64