86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
package orders
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import (
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"context"
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"errors"
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"github.com/google/uuid"
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"gorm.io/gorm"
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)
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var ErrNotFound = errors.New("order not found")
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type Repository interface {
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Create(ctx context.Context, order *Order, items []*OrderItem) error
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FindByID(ctx context.Context, id uuid.UUID) (*Order, []*OrderItem, error)
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List(ctx context.Context, status string) ([]*Order, error)
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UpdateStatus(ctx context.Context, id uuid.UUID, status string) (*Order, error)
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}
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type gormRepository struct {
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db *gorm.DB
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}
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func NewRepository(db *gorm.DB) Repository {
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return &gormRepository{db: db}
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}
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func (r *gormRepository) Create(ctx context.Context, order *Order, items []*OrderItem) error {
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return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
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if err := tx.Create(order).Error; err != nil {
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return err
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}
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for _, item := range items {
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item.OrderID = order.ID
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}
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if len(items) > 0 {
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if err := tx.Create(&items).Error; err != nil {
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return err
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}
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}
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return nil
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})
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}
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func (r *gormRepository) FindByID(ctx context.Context, id uuid.UUID) (*Order, []*OrderItem, error) {
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var order Order
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if err := r.db.WithContext(ctx).Where("id = ?", id).First(&order).Error; err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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return nil, nil, ErrNotFound
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}
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return nil, nil, err
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}
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var items []*OrderItem
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if err := r.db.WithContext(ctx).Where("order_id = ?", id).Order("created_at asc").Find(&items).Error; err != nil {
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return nil, nil, err
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}
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return &order, items, nil
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}
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func (r *gormRepository) List(ctx context.Context, status string) ([]*Order, error) {
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q := r.db.WithContext(ctx).Order("created_at desc")
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if status != "" {
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q = q.Where("status = ?", status)
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}
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var list []*Order
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if err := q.Find(&list).Error; err != nil {
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return nil, err
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}
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return list, nil
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}
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func (r *gormRepository) UpdateStatus(ctx context.Context, id uuid.UUID, status string) (*Order, error) {
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res := r.db.WithContext(ctx).Model(&Order{}).Where("id = ?", id).Update("status", status)
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if res.Error != nil {
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return nil, res.Error
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}
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if res.RowsAffected == 0 {
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return nil, ErrNotFound
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}
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var order Order
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if err := r.db.WithContext(ctx).Where("id = ?", id).First(&order).Error; err != nil {
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return nil, err
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}
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return &order, nil
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}
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