added addresses endpoints

app/service/addressesService/addressesService.go

@@ -0,0 +1,152 @@
+package addressesService
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"git.ma-al.com/goc_daniel/b2b/app/model"
+	"git.ma-al.com/goc_daniel/b2b/app/repos/addressesRepo"
+	constdata "git.ma-al.com/goc_daniel/b2b/app/utils/const_data"
+	"git.ma-al.com/goc_daniel/b2b/app/utils/responseErrors"
+)
+
+type AddressesService struct {
+	repo addressesRepo.UIAddressesRepo
+}
+
+func New() *AddressesService {
+	return &AddressesService{
+		repo: addressesRepo.New(),
+	}
+}
+
+func (s *AddressesService) GetTemplate(country_id uint) (model.AddressField, error) {
+	switch country_id {
+
+	case 1: // Poland
+		return model.AddressPL{}, nil
+
+	case 2: // Great Britain
+		return model.AddressGB{}, nil
+
+	case 3: // Czech Republic
+		return model.AddressCZ{}, nil
+
+	case 4: // Germany
+		return model.AddressDE{}, nil
+
+	default:
+		return nil, responseErrors.ErrInvalidCountryID
+	}
+}
+
+func (s *AddressesService) AddNewAddress(user_id uint, address_info string, country_id uint) error {
+	amt, err := s.repo.UserAddressesAmt(user_id)
+	if err != nil {
+		return err
+	} else if amt >= constdata.MAX_AMOUNT_OF_ADDRESSES_PER_USER {
+		return responseErrors.ErrMaxAmtOfAddressesReached
+	}
+
+	_, err = s.validateAddressJson(address_info, country_id)
+	if err != nil {
+		return err
+	}
+
+	return s.repo.AddNewAddress(user_id, address_info, country_id)
+}
+
+// country_id = 0 means that country_id remains unchanged
+func (s *AddressesService) ModifyAddress(user_id uint, address_id uint, address_info string, country_id uint) error {
+	amt, err := s.repo.UserHasAddress(user_id, address_id)
+	if err != nil {
+		return err
+	} else if amt != 1 {
+		return responseErrors.ErrUserHasNoSuchAddress
+	}
+
+	_, err = s.validateAddressJson(address_info, country_id)
+	if err != nil {
+		return err
+	}
+
+	return s.repo.UpdateAddress(user_id, address_id, address_info, country_id)
+}
+
+func (s *AddressesService) RetrieveAddressesInfo(user_id uint) (*[]model.AddressUnparsed, error) {
+	parsed_addresses, err := s.repo.RetrieveAddresses(user_id)
+	if err != nil {
+		return nil, err
+	}
+
+	var unparsed_addresses []model.AddressUnparsed
+
+	for i := 0; i < len(*parsed_addresses); i++ {
+		var next_address model.AddressUnparsed
+		next_address.ID = (*parsed_addresses)[i].ID
+		next_address.CustomerID = (*parsed_addresses)[i].CustomerID
+		next_address.CountryID = (*parsed_addresses)[i].CountryID
+
+		next_address.AddressInfo, err = s.validateAddressJson((*parsed_addresses)[i].AddressInfo, next_address.CountryID)
+		// log such errors
+		if err != nil {
+			fmt.Printf("err: %v\n", err)
+		}
+
+		unparsed_addresses = append(unparsed_addresses, next_address)
+	}
+
+	return &unparsed_addresses, nil
+}
+
+func (s *AddressesService) DeleteAddress(user_id uint, address_id uint) error {
+	amt, err := s.repo.UserHasAddress(user_id, address_id)
+	if err != nil {
+		return err
+	} else if amt != 1 {
+		return responseErrors.ErrUserHasNoSuchAddress
+	}
+
+	return s.repo.DeleteAddress(user_id, address_id)
+}
+
+// validateAddressJson makes sure that the info string represents a valid json of address in given country
+func (s *AddressesService) validateAddressJson(info string, country_id uint) (model.AddressField, error) {
+	dec := json.NewDecoder(strings.NewReader(info))
+	dec.DisallowUnknownFields()
+
+	switch country_id {
+
+	case 1: // Poland
+		var address model.AddressPL
+		if err := dec.Decode(&address); err != nil {
+			return address, responseErrors.ErrInvalidAddressJSON
+		}
+		return address, nil
+
+	case 2: // Great Britain
+		var address model.AddressGB
+		if err := dec.Decode(&address); err != nil {
+			return address, responseErrors.ErrInvalidAddressJSON
+		}
+		return address, nil
+
+	case 3: // Czech Republic
+		var address model.AddressCZ
+		if err := dec.Decode(&address); err != nil {
+			return address, responseErrors.ErrInvalidAddressJSON
+		}
+		return address, nil
+
+	case 4: // Germany
+		var address model.AddressDE
+		if err := dec.Decode(&address); err != nil {
+			return address, responseErrors.ErrInvalidAddressJSON
+		}
+		return address, nil
+
+	default:
+		return nil, responseErrors.ErrInvalidCountryID
+	}
+}