Mlcavalho1andClaude Sonnet 4.6
d6782d51a5
API REST /api/categories (GET/POST/PUT/DELETE) com regras de negócio: categorias padrão não podem ser excluídas; categorias com transações vinculadas também bloqueadas. Tela Vue com formulário inline de criação/edição, indicador visual de categorias padrão e botão de exclusão condicional. Co-Authored-By: Claude Sonnet 4.6 <[email protected]>
107 lines
3.0 KiB
Go
107 lines
3.0 KiB
Go
package repository
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import (
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"context"
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"errors"
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"github.com/jackc/pgx/v5"
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"github.com/jackc/pgx/v5/pgxpool"
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"financeiro-carvalho/internal/model"
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)
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var ErrNotFound = errors.New("not found")
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type CategoryRepository interface {
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List(ctx context.Context) ([]model.Category, error)
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GetByID(ctx context.Context, id int) (*model.Category, error)
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Create(ctx context.Context, name, color string) (*model.Category, error)
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Update(ctx context.Context, id int, name, color string) (*model.Category, error)
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Delete(ctx context.Context, id int) error
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HasTransactions(ctx context.Context, id int) (bool, error)
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}
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type categoryRepo struct{ db *pgxpool.Pool }
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func NewCategoryRepository(db *pgxpool.Pool) CategoryRepository {
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return &categoryRepo{db: db}
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}
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func (r *categoryRepo) List(ctx context.Context) ([]model.Category, error) {
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rows, err := r.db.Query(ctx, `
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SELECT id, name, color, is_default, created_at, updated_at
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FROM categories
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ORDER BY is_default DESC, name ASC`)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var out []model.Category
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for rows.Next() {
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var c model.Category
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if err := rows.Scan(&c.ID, &c.Name, &c.Color, &c.IsDefault, &c.CreatedAt, &c.UpdatedAt); err != nil {
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return nil, err
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}
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out = append(out, c)
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}
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return out, rows.Err()
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}
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func (r *categoryRepo) GetByID(ctx context.Context, id int) (*model.Category, error) {
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var c model.Category
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err := r.db.QueryRow(ctx, `
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SELECT id, name, color, is_default, created_at, updated_at
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FROM categories WHERE id = $1`, id).
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Scan(&c.ID, &c.Name, &c.Color, &c.IsDefault, &c.CreatedAt, &c.UpdatedAt)
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if errors.Is(err, pgx.ErrNoRows) {
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return nil, ErrNotFound
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}
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return &c, err
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}
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func (r *categoryRepo) Create(ctx context.Context, name, color string) (*model.Category, error) {
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var c model.Category
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err := r.db.QueryRow(ctx, `
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INSERT INTO categories (name, color)
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VALUES ($1, $2)
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RETURNING id, name, color, is_default, created_at, updated_at`,
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name, color).
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Scan(&c.ID, &c.Name, &c.Color, &c.IsDefault, &c.CreatedAt, &c.UpdatedAt)
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return &c, err
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}
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func (r *categoryRepo) Update(ctx context.Context, id int, name, color string) (*model.Category, error) {
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var c model.Category
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err := r.db.QueryRow(ctx, `
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UPDATE categories
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SET name = $1, color = $2, updated_at = NOW()
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WHERE id = $3
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RETURNING id, name, color, is_default, created_at, updated_at`,
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name, color, id).
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Scan(&c.ID, &c.Name, &c.Color, &c.IsDefault, &c.CreatedAt, &c.UpdatedAt)
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if errors.Is(err, pgx.ErrNoRows) {
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return nil, ErrNotFound
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}
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return &c, err
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}
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func (r *categoryRepo) Delete(ctx context.Context, id int) error {
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tag, err := r.db.Exec(ctx, `DELETE FROM categories WHERE id = $1`, id)
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if err != nil {
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return err
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}
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if tag.RowsAffected() == 0 {
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return ErrNotFound
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}
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return nil
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}
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func (r *categoryRepo) HasTransactions(ctx context.Context, id int) (bool, error) {
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var count int
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err := r.db.QueryRow(ctx,
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`SELECT COUNT(*) FROM transactions WHERE category_id = $1`, id).
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Scan(&count)
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return count > 0, err
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}
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