add products

internal/models/storage/storage_file/storage.go

@@ -5,9 +5,14 @@ import (
 	crm "cake_crm/proto"
 	"context"
 	"encoding/json"
+	"errors"
 	"os"
 )
 
+var (
+	ErrProductNotFound = errors.New("product not found")
+)
+
 type storageFile struct{}
 
 func NewStorageFile() storage.IStorage {
@@ -43,3 +48,20 @@ func (s *storageFile) GetPositions(_ context.Context, id int64) ([]*crm.Product,
 	}
 	return res, nil
 }
+
+func (s *storageFile) GetProduct(_ context.Context, id int64) (*crm.Product, error) {
+	data, err := os.ReadFile("resources/products.json")
+	if err != nil {
+		return nil, err
+	}
+	var products []*crm.Product
+	if err := json.Unmarshal(data, &products); err != nil {
+		return nil, err
+	}
+	for _, product := range products {
+		if product.Id == id {
+			return product, nil
+		}
+	}
+	return nil, ErrProductNotFound
+}