added some govno to postgres

internal/org/service.go

@@ -0,0 +1,102 @@
+package org
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+)
+
+var (
+	ErrNotFound   = errors.New("organization not found")
+	ErrSlugExists = errors.New("slug already taken")
+)
+
+type Service struct {
+	repo *Repository
+}
+
+func NewService(repo *Repository) *Service {
+	return &Service{repo: repo}
+}
+
+func (s *Service) Create(ctx context.Context, req CreateOrgRequest) (*Organization, error) {
+	req.Slug = strings.ToLower(strings.TrimSpace(req.Slug))
+
+	org := &Organization{
+		Name: req.Name,
+		Slug: req.Slug,
+	}
+
+	if err := s.repo.Create(ctx, org); err != nil {
+		if isUniqueViolation(err) {
+			return nil, ErrSlugExists
+		}
+		return nil, fmt.Errorf("failed to create organization: %w", err)
+	}
+
+	return org, nil
+}
+
+func (s *Service) GetByID(ctx context.Context, id string) (*Organization, error) {
+	org, err := s.repo.FindByID(ctx, id)
+	if err != nil {
+		if errors.Is(err, ErrNoRows) {
+			return nil, ErrNotFound
+		}
+		return nil, fmt.Errorf("failed to find organization: %w", err)
+	}
+	return org, nil
+}
+
+func (s *Service) List(ctx context.Context) (*OrgListResponse, error) {
+	orgs, err := s.repo.FindAll(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("failed to list organizations: %w", err)
+	}
+	if orgs == nil {
+		orgs = []Organization{}
+	}
+	return &OrgListResponse{
+		Organizations: orgs,
+		Total:         len(orgs),
+	}, nil
+}
+
+func (s *Service) Update(ctx context.Context, id string, req UpdateOrgRequest) (*Organization, error) {
+	org, err := s.repo.FindByID(ctx, id)
+	if err != nil {
+		if errors.Is(err, ErrNoRows) {
+			return nil, ErrNotFound
+		}
+		return nil, fmt.Errorf("failed to find organization: %w", err)
+	}
+
+	org.Name = req.Name
+
+	if err := s.repo.Update(ctx, org); err != nil {
+		return nil, fmt.Errorf("failed to update organization: %w", err)
+	}
+
+	return org, nil
+}
+
+func (s *Service) Delete(ctx context.Context, id string) error {
+	org, err := s.repo.FindByID(ctx, id)
+	if err != nil {
+		if errors.Is(err, ErrNoRows) {
+			return ErrNotFound
+		}
+		return fmt.Errorf("failed to find organization: %w", err)
+	}
+
+	if err := s.repo.Delete(ctx, org.ID); err != nil {
+		return fmt.Errorf("failed to delete organization: %w", err)
+	}
+
+	return nil
+}
+
+func isUniqueViolation(err error) bool {
+	return err != nil && (strings.Contains(err.Error(), "unique") || strings.Contains(err.Error(), "23505"))
+}