Support overwriting title, author and description of feed (#177)

Fixes #176

pkg/config/config.go

@@ -55,10 +55,13 @@ type Filters struct {
 }
 
 type Custom struct {
-	CoverArt string `toml:"cover_art"`
-	Category string `toml:"category"`
-	Explicit bool   `toml:"explicit"`
-	Language string `toml:"lang"`
+	CoverArt    string `toml:"cover_art"`
+	Category    string `toml:"category"`
+	Explicit    bool   `toml:"explicit"`
+	Language    string `toml:"lang"`
+	Author      string `toml:"author"`
+	Title       string `toml:"title"`
+	Description string `toml:"description"`
 }
 
 type Server struct {

pkg/feed/xml.go

@@ -37,14 +37,29 @@ func Build(ctx context.Context, feed *model.Feed, cfg *config.Feed, provider url
 	)
 
 	var (
-		now = time.Now().UTC()
+		now         = time.Now().UTC()
+		author      = feed.Title
+		title       = feed.Title
+		description = feed.Description
 	)
 
-	p := itunes.New(feed.Title, feed.ItemURL, feed.Description, &feed.PubDate, &now)
+	if cfg.Custom.Author != "" {
+		author = cfg.Custom.Author
+	}
+
+	if cfg.Custom.Title != "" {
+		title = cfg.Custom.Title
+	}
+
+	if cfg.Custom.Description != "" {
+		description = cfg.Custom.Description
+	}
+
+	p := itunes.New(title, feed.ItemURL, description, &feed.PubDate, &now)
 	p.Generator = podsyncGenerator
-	p.AddSubTitle(feed.Title)
-	p.IAuthor = feed.Title
-	p.AddSummary(feed.Description)
+	p.AddSubTitle(title)
+	p.IAuthor = author
+	p.AddSummary(description)
 
 	if cfg.Custom.CoverArt != "" {
 		p.AddImage(cfg.Custom.CoverArt)