Continued work around getting messages and notifications cleaned up since moving to MySQL and changing to Gin, SCS, NoSurf.

internal/platform/services/notifications/service.go

@@ -0,0 +1,80 @@
+// ToDo: carve out sql
+package notifysvc
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"time"
+
+	accountNotificationHandler "synlotto-website/internal/handlers/account/notifications"
+)
+
+type Service struct {
+	DB      *sql.DB
+	Now     func() time.Time
+	Timeout time.Duration
+}
+
+func New(db *sql.DB, opts ...func(*Service)) *Service {
+	s := &Service{
+		DB:      db,
+		Now:     time.Now,
+		Timeout: 5 * time.Second,
+	}
+	for _, opt := range opts {
+		opt(s)
+	}
+	return s
+}
+
+func WithTimeout(d time.Duration) func(*Service) { return func(s *Service) { s.Timeout = d } }
+
+// List returns newest-first notifications for a user.
+func (s *Service) List(userID int64) ([]accountNotificationHandler.Notification, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), s.Timeout)
+	defer cancel()
+
+	const q = `
+SELECT id, title, body, is_read, created_at
+FROM notifications
+WHERE user_id = ?
+ORDER BY created_at DESC`
+
+	rows, err := s.DB.QueryContext(ctx, q, userID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var out []accountNotificationHandler.Notification
+	for rows.Next() {
+		var n accountNotificationHandler.Notification
+		if err := rows.Scan(&n.ID, &n.Title, &n.Body, &n.IsRead, &n.CreatedAt); err != nil {
+			return nil, err
+		}
+		out = append(out, n)
+	}
+	return out, rows.Err()
+}
+
+func (s *Service) GetByID(userID, id int64) (*accountNotificationHandler.Notification, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), s.Timeout)
+	defer cancel()
+
+	const q = `
+SELECT id, title, body, is_read, created_at
+FROM notifications
+WHERE user_id = ? AND id = ?`
+
+	var n accountNotificationHandler.Notification
+	err := s.DB.QueryRowContext(ctx, q, userID, id).
+		Scan(&n.ID, &n.Title, &n.Body, &n.IsRead, &n.CreatedAt)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &n, nil
+}