Added description and a way to save and restore the RSS feed.

cmd/feed/rss.go

@@ -1,19 +1,21 @@
 package feed
 
 import (
+	"encoding/gob"
 	"fmt"
+	"os"
 	"time"
 
 	"github.com/gorilla/feeds"
 )
 
 type Feed struct {
-	*feeds.Feed
+	feeds.Feed
 }
 
-func NewFeed(title, link, desc string) Feed {
-	return Feed{
-		Feed: &feeds.Feed{
+func NewFeed(title, link, desc string) *Feed {
+	return &Feed{
+		Feed: feeds.Feed{
 			Title:       title,
 			Link:        &feeds.Link{Href: link},
 			Description: desc,
@@ -21,11 +23,40 @@ func NewFeed(title, link, desc string) Feed {
 	}
 }
 
-func AddToFeed(feed Feed, title, content string) error {
+func SaveFeed(feed *Feed, filename string) error {
+	file, err := os.Create(filename)
+	if err != nil {
+		return fmt.Errorf("error cmd/feed/rss.go WriteFeed os.Create(): %v", err)
+	}
+	defer file.Close()
+
+	encoder := gob.NewEncoder(file)
+	encoder.Encode(feed)
+
+	return nil
+}
+
+func OpenFeed(filename string) (*Feed, error) {
+	var feed *Feed
+
+	file, err := os.Open(filename)
+	if err != nil {
+		return nil, fmt.Errorf("error cmd/feed/rss.go ReadFeed os.Open(): %v", err)
+	}
+	defer file.Close()
+
+	decoder := gob.NewDecoder(file)
+	decoder.Decode(feed)
+
+	return feed, nil
+}
+
+func AddToFeed(feed *Feed, title, desc, content string) error {
 	item := feeds.Item{
-		Title:   title,
-		Created: time.Now(),
-		Content: content,
+		Title:       title,
+		Created:     time.Now(),
+		Description: desc,
+		Content:     content,
 	}
 	feed.Add(&item)