feat(orion): add rest api for waitlist

go/internal/waitlist/service.go

@@ -0,0 +1,110 @@
+package waitlist
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/flowy-live/llink/internal/utils"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type WaitlistEntry struct {
+	Id        int               `db:"id"`
+	Email     string            `db:"email"`
+	Metadata  map[string]string `db:"metadata"`
+	CreatedAt time.Time         `db:"created_at"`
+	InvitedAt *time.Time        `db:"invited_at"`
+}
+
+var (
+	AlreadyInWaitlistError = errors.New("already in the waitlist")
+	EntryNotFoundError     = errors.New("not found")
+)
+
+type GetWaitlistFilter string
+
+const (
+	GetWaitlistFilterAll           GetWaitlistFilter = "all"
+	GetWaitlistFilterInvitedOnly   GetWaitlistFilter = "invited-only"
+	GetWaitlistFilterUninvitedOnly GetWaitlistFilter = "uninvited-only"
+)
+
+type Service interface {
+	// returns AlreadyInWaitlistError if already in the waitlist
+	// any other error is a failure
+	AddToWaitlist(ctx context.Context, email string, metadata map[string]string) error
+	GetWaitlist(ctx context.Context, filter GetWaitlistFilter) ([]*WaitlistEntry, error)
+	// returns error if not found
+	GetWaitlistEntryByEmail(ctx context.Context, email string) (*WaitlistEntry, error)
+	MarkWaitlistEntryInvited(ctx context.Context, email string) error
+}
+
+type serviceImpl struct {
+	repo repository
+}
+
+func NewService(pool *pgxpool.Pool) Service {
+	return &serviceImpl{
+		repo: newRepository(pool),
+	}
+}
+
+func (s *serviceImpl) AddToWaitlist(ctx context.Context, email string, metadata map[string]string) error {
+	normalizedEmail, err := utils.NormalizeEmail(email)
+	if err != nil {
+		return errors.New("invalid email")
+	}
+
+	if metadata == nil {
+		metadata = map[string]string{}
+	}
+
+	_, err = s.repo.create(ctx, normalizedEmail, metadata)
+	if err != nil {
+		if errors.Is(err, errAlreadyExists) {
+			return AlreadyInWaitlistError
+		}
+		return err
+	}
+
+	return nil
+}
+
+func (s *serviceImpl) GetWaitlist(ctx context.Context, filter GetWaitlistFilter) ([]*WaitlistEntry, error) {
+	return s.repo.getAll(ctx, filter)
+}
+
+func (s *serviceImpl) GetWaitlistEntryByEmail(ctx context.Context, email string) (*WaitlistEntry, error) {
+	normalizedEmail, err := utils.NormalizeEmail(email)
+	if err != nil {
+		return nil, errors.New("invalid email")
+	}
+
+	entry, err := s.repo.getByEmail(ctx, normalizedEmail)
+	if err != nil {
+		if errors.Is(err, errNotFound) {
+			return nil, EntryNotFoundError
+		}
+		return nil, err
+	}
+
+	return entry, nil
+}
+
+func (s *serviceImpl) MarkWaitlistEntryInvited(ctx context.Context, email string) error {
+	normalizedEmail, err := utils.NormalizeEmail(email)
+	if err != nil {
+		return errors.New("invalid email")
+	}
+
+	err = s.repo.markInvited(ctx, normalizedEmail)
+	if err != nil {
+		if errors.Is(err, errNotFound) {
+			return EntryNotFoundError
+		}
+		return err
+	}
+
+	return nil
+}