add retention for news

Signed-off-by: kaedwen <kaedwen@heinrich.blue>

pkg/app/app.go

@@ -74,7 +74,7 @@ func New(cfg *config.Config, logger *slog.Logger) (*Application, error) {
 	if fetchTimeout == 0 {
 		fetchTimeout = 5 * time.Minute // Default timeout
 	}
-	newsAgg := news.NewAggregator(newsRepo, cfg.News.PollInterval.Duration, fetchTimeout, llmScorer, logger)
+	newsAgg := news.NewAggregator(newsRepo, cfg.News.PollInterval.Duration, fetchTimeout, cfg.News.RetentionDays, llmScorer, logger)
 
 	// Add news sources from config
 	if len(cfg.News.Sources) > 0 {

pkg/app/news/aggregator.go

@@ -19,6 +19,7 @@ type Aggregator struct {
 	llmScorer     *LLMScorer
 	pollInterval  time.Duration
 	fetchTimeout  time.Duration
+	retentionDays int
 	logger        *slog.Logger
 	onNewsUpdated func() // Callback for SSE notifications
 }
@@ -27,17 +28,19 @@ func NewAggregator(
 	newsRepo *db.NewsRepository,
 	pollInterval time.Duration,
 	fetchTimeout time.Duration,
+	retentionDays int,
 	llmScorer *LLMScorer,
 	logger *slog.Logger,
 ) *Aggregator {
 	agg := &Aggregator{
-		sources:      make([]Source, 0),
-		newsRepo:     newsRepo,
-		analyzer:     NewAnalyzer(),
-		llmScorer:    llmScorer,
-		pollInterval: pollInterval,
-		fetchTimeout: fetchTimeout,
-		logger:       logger,
+		sources:       make([]Source, 0),
+		newsRepo:      newsRepo,
+		analyzer:      NewAnalyzer(),
+		llmScorer:     llmScorer,
+		pollInterval:  pollInterval,
+		fetchTimeout:  fetchTimeout,
+		retentionDays: retentionDays,
+		logger:        logger,
 	}
 
 	return agg
@@ -222,6 +225,20 @@ func (a *Aggregator) fetchAllSources(ctx context.Context) error {
 		a.onNewsUpdated()
 	}
 
+	// Clean up old news articles if retention is configured
+	if a.retentionDays > 0 {
+		cutoff := time.Now().AddDate(0, 0, -a.retentionDays)
+		deleted, err := a.newsRepo.DeleteOlderThan(ctx, cutoff)
+		if err != nil {
+			a.logger.Error("failed to cleanup old news", slog.Any("error", err))
+		} else if deleted > 0 {
+			a.logger.Info("cleaned up old news",
+				slog.Int64("deleted", deleted),
+				slog.Int("retention_days", a.retentionDays),
+			)
+		}
+	}
+
 	return nil
 }
 

pkg/config/config.go

@@ -67,6 +67,7 @@ type OIDCConfig struct {
 type NewsConfig struct {
 	PollInterval       Duration     `yaml:"poll_interval"`
 	FetchTimeout       Duration     `yaml:"fetch_timeout"`        // Timeout per source (fetch + processing)
+	RetentionDays      int          `yaml:"retention_days"`       // Drop news older than this many days
 	DefaultRateLimit   *RateLimit   `yaml:"default_rate_limit,omitempty"`
 	Sources            []NewsSource `yaml:"sources"`
 }
@@ -151,7 +152,8 @@ func Load() (*Config, error) {
 			PollInterval: Duration{
 				Duration: time.Duration(getEnvInt("NEWS_POLL_INTERVAL", 300)) * time.Second,
 			},
-			Sources: []NewsSource{}, // Will be loaded from YAML
+			RetentionDays: getEnvInt("NEWS_RETENTION_DAYS", 7),
+			Sources:       []NewsSource{}, // Will be loaded from YAML
 		},
 		LLMScorer: LLMScorerConfig{
 			Enabled:  getEnvBool("LLM_SCORER_ENABLED", false),

pkg/db/news.go

@@ -171,3 +171,20 @@ func (r *NewsRepository) CountRecentByTime(ctx context.Context, since time.Time)
 
 	return count, nil
 }
+
+// DeleteOlderThan deletes news articles published before the given time
+func (r *NewsRepository) DeleteOlderThan(ctx context.Context, before time.Time) (int64, error) {
+	query := `DELETE FROM news_articles WHERE published_at < ?`
+
+	result, err := r.db.ExecContext(ctx, query, before)
+	if err != nil {
+		return 0, fmt.Errorf("failed to delete old news: %w", err)
+	}
+
+	rowsAffected, err := result.RowsAffected()
+	if err != nil {
+		return 0, fmt.Errorf("failed to get rows affected: %w", err)
+	}
+
+	return rowsAffected, nil
+}