Add overview, saved endpoints. Delete duplicate code

Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>

geddit.go

@@ -564,15 +564,18 @@ type Subreddit struct {
 	UserIsMod       bool `json:"user_is_moderator"`
 }
 
-func (rl *rootListing) getLinks() *LinkList {
+func (rl *rootListing) getAfter() string {
 	if rl == nil || rl.Data == nil {
-		return nil
+		return ""
 	}
-	return &LinkList{
-		Links:  rl.Data.Things.Links,
-		After:  rl.Data.After,
-		Before: rl.Data.Before,
+	return rl.Data.After
+}
+
+func (rl *rootListing) getBefore() string {
+	if rl == nil || rl.Data == nil {
+		return ""
 	}
+	return rl.Data.Before
 }
 
 func (rl *rootListing) getComments() *CommentList {
@@ -585,3 +588,25 @@ func (rl *rootListing) getComments() *CommentList {
 		Before:   rl.Data.Before,
 	}
 }
+
+func (rl *rootListing) getLinks() *LinkList {
+	if rl == nil || rl.Data == nil {
+		return nil
+	}
+	return &LinkList{
+		Links:  rl.Data.Things.Links,
+		After:  rl.Data.After,
+		Before: rl.Data.Before,
+	}
+}
+
+func (rl *rootListing) getSubreddits() *SubredditList {
+	if rl == nil || rl.Data == nil {
+		return nil
+	}
+	return &SubredditList{
+		Subreddits: rl.Data.Things.Subreddits,
+		After:      rl.Data.After,
+		Before:     rl.Data.Before,
+	}
+}