added media fixes, search, push updates, pwa, metrics. preparing release 1.0

server/internal/store/push.go

@@ -0,0 +1,61 @@
+package store
+
+import (
+	"context"
+	"time"
+)
+
+// PushSubscription is a browser Web Push endpoint registered by a user.
+type PushSubscription struct {
+	ID        int64
+	UserID    int64
+	Endpoint  string
+	P256dh    string
+	Auth      string
+	CreatedAt time.Time
+}
+
+// CreatePushSubscription stores a subscription, replacing any previous one
+// bound to the same endpoint.
+func (s *Store) CreatePushSubscription(ctx context.Context, sub PushSubscription) (*PushSubscription, error) {
+	err := s.pool.QueryRow(ctx, `
+       INSERT INTO push_subscriptions(user_id, endpoint, p256dh, auth)
+       VALUES($1, $2, $3, $4)
+       ON CONFLICT (endpoint) DO UPDATE SET user_id = EXCLUDED.user_id, p256dh = EXCLUDED.p256dh, auth = EXCLUDED.auth
+       RETURNING id, created_at
+   `, sub.UserID, sub.Endpoint, sub.P256dh, sub.Auth).Scan(&sub.ID, &sub.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	return &sub, nil
+}
+
+// DeletePushSubscription removes a subscription by endpoint and owner.
+func (s *Store) DeletePushSubscription(ctx context.Context, userID int64, endpoint string) error {
+	_, err := s.pool.Exec(ctx, `
+       DELETE FROM push_subscriptions WHERE user_id=$1 AND endpoint=$2
+   `, userID, endpoint)
+	return err
+}
+
+// ListPushSubscriptionsForUser returns all endpoints registered by a user.
+func (s *Store) ListPushSubscriptionsForUser(ctx context.Context, userID int64) ([]PushSubscription, error) {
+	rows, err := s.pool.Query(ctx, `
+       SELECT id, user_id, endpoint, p256dh, auth, created_at
+       FROM push_subscriptions WHERE user_id=$1
+   `, userID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var subs []PushSubscription
+	for rows.Next() {
+		var sub PushSubscription
+		if err := rows.Scan(&sub.ID, &sub.UserID, &sub.Endpoint, &sub.P256dh, &sub.Auth, &sub.CreatedAt); err != nil {
+			return nil, err
+		}
+		subs = append(subs, sub)
+	}
+	return subs, nil
+}