new: add feeds to news page

routes/news.go

@@ -1,18 +1,25 @@
 package routes
 
 import (
+	"fmt"
+	"path"
 	"sort"
+	"time"
 
 	"git.matterlinux.xyz/Matter/website/lib"
 	"git.matterlinux.xyz/Matter/website/log"
 	"github.com/gofiber/fiber/v2"
+	"github.com/gorilla/feeds"
 )
 
-func GET_News(c *fiber.Ctx) error {
-	contents, err := lib.ListContent("news")
-	if err != nil {
-		log.Error("ListContent failed: %s", err.Error())
-		return lib.RenderError(c, 500)
+func GetContent() ([]lib.Content, error) {
+	var (
+		contents []lib.Content
+		err      error
+	)
+
+	if contents, err = lib.ListContent("news"); err != nil {
+		return nil, err
 	}
 
 	sort.Slice(contents, func(i, j int) bool {
@@ -31,6 +38,17 @@ func GET_News(c *fiber.Ctx) error {
 		return time1.After(time2)
 	})
 
+	return contents, nil
+}
+
+func GET_News(c *fiber.Ctx) error {
+	contents, err := GetContent()
+
+	if err != nil {
+		log.Error("GetContent failed: %s", err.Error())
+		return lib.RenderError(c, 500)
+	}
+
 	return c.Render("news", fiber.Map{
 		"news": contents,
 	})
@@ -67,3 +85,79 @@ func GET_New(c *fiber.Ctx) error {
 
 	return lib.RenderError(c, 404)
 }
+
+func GET_NewsFeed(c *fiber.Ctx) error {
+	var (
+		feed_type string
+		feed      *feeds.Feed
+		contents  []lib.Content
+		res       string
+		err       error
+	)
+
+	feed_type = path.Base(c.Path())
+
+	if contents, err = GetContent(); err != nil {
+		log.Error("GetContent failed: %s", err.Error())
+		return lib.RenderError(c, 500)
+	}
+
+	feed = &feeds.Feed{
+		Title:       "MatterLinux | News",
+		Link:        &feeds.Link{Href: "https://matterlinux.xyz/news"}, // lets hardcode this for now
+		Description: "News regarding the MatterLinux project",
+		Created:     time.Now(),
+	}
+
+	feed.Items = []*feeds.Item{}
+
+	for _, con := range contents {
+		parsed, err := time.Parse("02/01/06", con.Date)
+
+		if err != nil {
+			log.Error("Failed to parse post time (%s): %s", con.ID, err.Error())
+			return lib.RenderError(c, 500)
+		}
+
+		feed.Items = append(feed.Items, &feeds.Item{
+			Id:      con.ID,
+			Title:   con.Title,
+			Link:    &feeds.Link{Href: fmt.Sprintf("https://matterlinux.xyz/news/%s", con.ID)},
+			Author:  &feeds.Author{Name: con.Author},
+			Created: parsed,
+			Content: con.Md,
+		})
+	}
+
+	switch feed_type {
+	case "feed.atom":
+		if res, err = feed.ToAtom(); err != nil {
+			log.Error("Failed to convert feed to atom: %s", err.Error())
+			return lib.RenderError(c, 500)
+		}
+
+		c.Set("Content-Type", "application/atom+xml")
+		return c.Send([]byte(res))
+
+	case "feed.rss":
+		if res, err = feed.ToRss(); err != nil {
+			log.Error("Failed to convert feed to RSS: %s", err.Error())
+			return lib.RenderError(c, 500)
+		}
+
+		c.Set("Content-Type", "application/rss+xml")
+		return c.Send([]byte(res))
+
+	case "feed.json":
+		if res, err = feed.ToJSON(); err != nil {
+			log.Error("Failed to convert feed to JSON: %s", err.Error())
+			return lib.RenderError(c, 500)
+		}
+
+		c.Set("Content-Type", "application/feed+json")
+		return c.Send([]byte(res))
+	}
+
+	log.Error("Cannot handle the feed type: %s", feed_type)
+	return lib.RenderError(c, 404)
+}