new: Add RSS Feed

internal/mApp/mApp.go

@@ -23,6 +23,8 @@ type MApp struct {
 	engine   *gin.Engine
 	searcher *engine.Engine
 
+	RSS string
+
 	Posts        []*model.MPost
 	IndexedPosts map[uint64]*model.MPost
 

internal/mApp/mHandler.go

@@ -457,6 +457,9 @@ func (ma *MApp) UpdateBlogHandler(ctx *gin.Context) {
 	// parse post index
 	ma.loadPostIndex()
 
+	// parse rss
+	ma.RSS = ma.generateRSS()
+
 	log.Println("update blog success")
 	ctx.JSON(http.StatusOK, gin.H{"msg": "ok"})
 }
@@ -485,3 +488,11 @@ func (ma *MApp) AboutHandler(ctx *gin.Context) {
 
 	ctx.HTML(http.StatusOK, "about.html", resData)
 }
+
+func (ma *MApp) RSSHandler(ctx *gin.Context) {
+	if ma.RSS != "" {
+		ctx.String(http.StatusOK, ma.RSS)
+	} else {
+		ctx.String(http.StatusNotFound, "RSS Not Found")
+	}
+}

internal/mApp/mRouter.go

@@ -4,6 +4,7 @@ func (ma *MApp) loadRoutes() {
 	ma.engine.Use(ma.AuthMiddleware)
 
 	ma.engine.GET("/", ma.IndexHandler)
+	ma.engine.GET("/rss", ma.RSSHandler)
 	ma.engine.GET("/about", ma.AboutHandler)
 	ma.engine.GET("/search", ma.SearchHandler)
 	ma.engine.GET("/archive", ma.ArchiveHandler)

internal/mApp/mRss.go

@@ -0,0 +1,56 @@
+package mApp
+
+import (
+	"fmt"
+	"log"
+	"strconv"
+	"time"
+
+	"github.com/gorilla/feeds"
+)
+
+func (ma *MApp) generateRSS() string {
+	layout := "2006-01-02 15:04:05"
+	now := time.Now()
+
+	feed := &feeds.Feed{
+		Created:     now,
+		Title:       ma.Config.MSite.Info.Title,
+		Link:        &feeds.Link{Href: ma.Config.MSite.Info.Link},
+		Author:      &feeds.Author{Name: ma.Config.MSite.Info.Author, Email: ma.Config.MSite.Info.Email},
+		Description: ma.Config.MSite.Info.Description,
+	}
+
+	count := 0
+	var items []*feeds.Item
+	for _, post := range ma.Posts {
+		if count >= ma.Config.MSite.Post.RecentPost.Number {
+			break
+		}
+		
+		updated, err := time.Parse(layout, post.Date)
+		if err != nil {
+			log.Println("Error parsing updated time ", post.Date)
+			continue
+		}
+
+		item := &feeds.Item{
+			Title:   post.Title,
+			Id:      strconv.FormatUint(post.Index, 10),
+			Link:    &feeds.Link{Href: fmt.Sprintf("%s/post/%s", ma.Config.MSite.Info.Link, post.HtmlHash)},
+			Author:  &feeds.Author{Name: ma.Config.MSite.Info.Author, Email: ma.Config.MSite.Info.Email},
+			Updated: updated,
+		}
+
+		items = append(items, item)
+		count++
+	}
+
+	feed.Items = items
+	rss, err := feed.ToRss()
+	if err != nil {
+		log.Println("Error generating rss ", err)
+	}
+
+	return rss
+}