feat: remove old feed items

when feed is removed from config.yml remove the old items

closes #43

internal/commands/commands.go

@@ -87,7 +87,43 @@ func GetWslHostName() string {
 	return strings.TrimSpace(string(out))
 }
 
+func (c Commands) CleanFeeds() error {
+	urls, err := c.store.GetAllFeedURLs()
+	if err != nil {
+		return fmt.Errorf("[commands.go]: %w", err)
+	}
+
+	var urlsToRemove []string
+
+	for _, u := range urls {
+		inFeeds := false
+		for _, f := range c.config.Feeds {
+			if f.URL == u {
+				inFeeds = true
+			}
+		}
+
+		if !inFeeds {
+			urlsToRemove = append(urlsToRemove, u)
+		}
+	}
+
+	for _, url := range urlsToRemove {
+		err := c.store.DeleteByFeedURL(url)
+		if err != nil {
+			return fmt.Errorf("[commands.go]: %w", err)
+		}
+	}
+
+	return nil
+}
+
 func (c Commands) TUI() error {
+	err := c.CleanFeeds()
+	if err != nil {
+		return fmt.Errorf("commands List: %w", err)
+	}
+
 	its, err := c.GetAllFeeds()
 	if err != nil {
 		return fmt.Errorf("commands List: %w", err)
@@ -117,6 +153,10 @@ func (c Commands) TUI() error {
 }
 
 func (c Commands) List(numResults int) error {
+	err := c.CleanFeeds()
+	if err != nil {
+		return fmt.Errorf("commands List: %w", err)
+	}
 	its, err := c.GetAllFeeds()
 	if err != nil {
 		return fmt.Errorf("commands List: %w", err)

internal/store/store.go

@@ -32,7 +32,9 @@ func (i Item) Read() bool {
 type Store interface {
 	UpsertItem(item Item) error
 	GetAllItems() ([]Item, error)
+	GetAllFeedURLs() ([]string, error)
 	ToggleRead(ID int) error
+	DeleteByFeedURL(feedurl string) error
 }
 
 type SQLiteStore struct {
@@ -217,3 +219,38 @@ func (sls SQLiteStore) ToggleRead(ID int) error {
 
 	return nil
 }
+
+func (sls SQLiteStore) GetAllFeedURLs() ([]string, error) {
+	var urls []string
+
+	stmt, _ := sls.db.Prepare(`select feedurl from items group by feedurl;`)
+
+	rows, err := stmt.Query()
+	if err != nil {
+		return urls, fmt.Errorf("[store.go] GetAllFeedURLs: %w", err)
+	}
+
+	for rows.Next() {
+		var feedurl string
+
+		err := rows.Scan(&feedurl)
+		if err != nil {
+			return urls, fmt.Errorf("[store.go] GetAllFeedURLs: %w", err)
+		}
+
+		urls = append(urls, feedurl)
+	}
+
+	return urls, nil
+}
+
+func (sls SQLiteStore) DeleteByFeedURL(feedurl string) error {
+	stmt, _ := sls.db.Prepare(`delete from items where feedurl = ?`)
+
+	_, err := stmt.Exec(feedurl)
+	if err != nil {
+		return fmt.Errorf("[store.go] DeleteByFeedURL: %w", err)
+	}
+
+	return nil
+}