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donor_store.go
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donor_store.go
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package app
import (
"context"
"errors"
"fmt"
"time"
"github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue"
"github.com/aws/aws-sdk-go-v2/service/s3"
"github.com/ministryofjustice/opg-modernising-lpa/internal/actor"
"github.com/ministryofjustice/opg-modernising-lpa/internal/actor/actoruid"
"github.com/ministryofjustice/opg-modernising-lpa/internal/dynamo"
"github.com/ministryofjustice/opg-modernising-lpa/internal/event"
"github.com/ministryofjustice/opg-modernising-lpa/internal/page"
"github.com/ministryofjustice/opg-modernising-lpa/internal/search"
"github.com/ministryofjustice/opg-modernising-lpa/internal/uid"
)
type UidClient interface {
CreateCase(context.Context, *uid.CreateCaseRequestBody) (uid.CreateCaseResponse, error)
}
type EventClient interface {
SendUidRequested(context.Context, event.UidRequested) error
SendApplicationUpdated(context.Context, event.ApplicationUpdated) error
SendPreviousApplicationLinked(context.Context, event.PreviousApplicationLinked) error
SendReducedFeeRequested(context.Context, event.ReducedFeeRequested) error
}
type DocumentStore interface {
GetAll(context.Context) (page.Documents, error)
Put(context.Context, page.Document) error
UpdateScanResults(context.Context, string, string, bool) error
}
type donorStore struct {
dynamoClient DynamoClient
eventClient EventClient
logger Logger
uuidString func() string
newUID func() actoruid.UID
now func() time.Time
s3Client *s3.Client
documentStore DocumentStore
searchClient SearchClient
}
func (s *donorStore) Create(ctx context.Context) (*actor.DonorProvidedDetails, error) {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return nil, err
}
if data.SessionID == "" {
return nil, errors.New("donorStore.Create requires SessionID")
}
lpaID := s.uuidString()
donorUID := s.newUID()
donor := &actor.DonorProvidedDetails{
PK: dynamo.LpaKey(lpaID),
SK: dynamo.DonorKey(data.SessionID),
LpaID: lpaID,
CreatedAt: s.now(),
Version: 1,
Donor: actor.Donor{
UID: donorUID,
Channel: actor.ChannelOnline,
},
}
latest, err := s.Latest(ctx)
if err != nil {
return nil, err
}
if latest != nil {
donor.Donor.FirstNames = latest.Donor.FirstNames
donor.Donor.LastName = latest.Donor.LastName
donor.Donor.OtherNames = latest.Donor.OtherNames
donor.Donor.DateOfBirth = latest.Donor.DateOfBirth
donor.Donor.Address = latest.Donor.Address
}
if donor.Hash, err = donor.GenerateHash(); err != nil {
return nil, err
}
if err := s.dynamoClient.Create(ctx, donor); err != nil {
return nil, err
}
if err := s.dynamoClient.Create(ctx, lpaLink{
PK: dynamo.LpaKey(lpaID),
SK: dynamo.SubKey(data.SessionID),
DonorKey: dynamo.DonorKey(data.SessionID),
ActorType: actor.TypeDonor,
UpdatedAt: s.now(),
}); err != nil {
return nil, err
}
return donor, err
}
// An lpaReference creates a "pointer" record which can be queried as if the
// expected donor owned the LPA. This contains the actual SK containing the LPA
// data.
type lpaReference struct {
PK, SK string
ReferencedSK string
}
// Link allows a donor to access an Lpa created by a supporter. It creates two
// records:
//
// 1. an lpaReference which allows the donor's session ID to be queried
// for the organisation ID that holds the Lpa data;
// 2. an lpaLink which allows
// the Lpa to be shown on the donor's dashboard.
func (s *donorStore) Link(ctx context.Context, shareCode actor.ShareCodeData) error {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return err
}
if data.SessionID == "" {
return errors.New("donorStore.Link requires SessionID")
}
var link lpaLink
if err := s.dynamoClient.OneByPartialSK(ctx, dynamo.LpaKey(shareCode.LpaID), dynamo.SubKey(""), &link); err != nil && !errors.Is(err, dynamo.NotFoundError{}) {
return err
} else if link.ActorType == actor.TypeDonor {
return errors.New("a donor link already exists for " + shareCode.LpaID)
}
if err := s.dynamoClient.Create(ctx, lpaReference{
PK: dynamo.LpaKey(shareCode.LpaID),
SK: dynamo.DonorKey(data.SessionID),
ReferencedSK: dynamo.OrganisationKey(shareCode.SessionID),
}); err != nil {
return err
}
return s.dynamoClient.Create(ctx, lpaLink{
PK: dynamo.LpaKey(shareCode.LpaID),
SK: dynamo.SubKey(data.SessionID),
DonorKey: dynamo.OrganisationKey(shareCode.SessionID),
ActorType: actor.TypeDonor,
UpdatedAt: s.now(),
})
}
func (s *donorStore) GetAny(ctx context.Context) (*actor.DonorProvidedDetails, error) {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return nil, err
}
if data.LpaID == "" {
return nil, errors.New("donorStore.Get requires LpaID")
}
sk := dynamo.DonorKey("")
if data.OrganisationID != "" {
sk = dynamo.OrganisationKey("")
}
var donor *actor.DonorProvidedDetails
if err := s.dynamoClient.OneByPartialSK(ctx, dynamo.LpaKey(data.LpaID), sk, &donor); err != nil {
return nil, err
}
return donor, nil
}
func (s *donorStore) Get(ctx context.Context) (*actor.DonorProvidedDetails, error) {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return nil, err
}
if data.LpaID == "" || data.SessionID == "" {
return nil, errors.New("donorStore.Get requires LpaID and SessionID")
}
sk := dynamo.DonorKey(data.SessionID)
if data.OrganisationID != "" {
sk = dynamo.OrganisationKey(data.OrganisationID)
}
var donor struct {
actor.DonorProvidedDetails
ReferencedSK string
}
if err := s.dynamoClient.One(ctx, dynamo.LpaKey(data.LpaID), sk, &donor); err != nil {
return nil, err
}
if donor.ReferencedSK != "" {
err = s.dynamoClient.One(ctx, dynamo.LpaKey(data.LpaID), donor.ReferencedSK, &donor)
}
return &donor.DonorProvidedDetails, err
}
func (s *donorStore) Latest(ctx context.Context) (*actor.DonorProvidedDetails, error) {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return nil, err
}
if data.SessionID == "" {
return nil, errors.New("donorStore.Get requires SessionID")
}
var donor *actor.DonorProvidedDetails
if err := s.dynamoClient.LatestForActor(ctx, dynamo.DonorKey(data.SessionID), &donor); err != nil {
return nil, err
}
return donor, nil
}
func (s *donorStore) GetByKeys(ctx context.Context, keys []dynamo.Key) ([]actor.DonorProvidedDetails, error) {
if len(keys) == 0 {
return nil, nil
}
items, err := s.dynamoClient.AllByKeys(ctx, keys)
if err != nil {
return nil, err
}
var donors []actor.DonorProvidedDetails
err = attributevalue.UnmarshalListOfMaps(items, &donors)
return donors, err
}
func (s *donorStore) Put(ctx context.Context, donor *actor.DonorProvidedDetails) error {
newHash, err := donor.GenerateHash()
if newHash == donor.Hash || err != nil {
return err
}
donor.Hash = newHash
// By not setting UpdatedAt until a UID exists, queries for SK=#DONOR#xyz on
// SKUpdatedAtIndex will not return UID-less LPAs.
if donor.LpaUID != "" {
donor.UpdatedAt = s.now()
if err := s.searchClient.Index(ctx, search.Lpa{
PK: donor.PK,
SK: donor.SK,
DonorFullName: donor.Donor.FullName(),
}); err != nil {
return fmt.Errorf("donorStore index failed: %w", err)
}
}
if donor.LpaUID == "" && !donor.Type.Empty() && !donor.HasSentUidRequestedEvent {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return err
}
if err := s.eventClient.SendUidRequested(ctx, event.UidRequested{
LpaID: donor.LpaID,
DonorSessionID: data.SessionID,
OrganisationID: data.OrganisationID,
Type: donor.Type.String(),
Donor: uid.DonorDetails{
Name: donor.Donor.FullName(),
Dob: donor.Donor.DateOfBirth,
Postcode: donor.Donor.Address.Postcode,
},
}); err != nil {
return err
}
donor.HasSentUidRequestedEvent = true
}
if donor.LpaUID != "" && !donor.HasSentApplicationUpdatedEvent {
if err := s.eventClient.SendApplicationUpdated(ctx, event.ApplicationUpdated{
UID: donor.LpaUID,
Type: donor.Type.String(),
CreatedAt: donor.CreatedAt,
Donor: event.ApplicationUpdatedDonor{
FirstNames: donor.Donor.FirstNames,
LastName: donor.Donor.LastName,
DateOfBirth: donor.Donor.DateOfBirth,
Address: donor.Donor.Address,
},
}); err != nil {
return err
}
donor.HasSentApplicationUpdatedEvent = true
}
if donor.LpaUID != "" && donor.PreviousApplicationNumber != "" && !donor.HasSentPreviousApplicationLinkedEvent {
if err := s.eventClient.SendPreviousApplicationLinked(ctx, event.PreviousApplicationLinked{
UID: donor.LpaUID,
PreviousApplicationNumber: donor.PreviousApplicationNumber,
}); err != nil {
return err
}
donor.HasSentPreviousApplicationLinkedEvent = true
}
return s.dynamoClient.Put(ctx, donor)
}
func (s *donorStore) Delete(ctx context.Context) error {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return err
}
if data.SessionID == "" || data.LpaID == "" {
return errors.New("donorStore.Create requires SessionID and LpaID")
}
keys, err := s.dynamoClient.AllKeysByPK(ctx, dynamo.LpaKey(data.LpaID))
if err != nil {
return err
}
canDelete := false
for _, key := range keys {
if key.PK == dynamo.LpaKey(data.LpaID) && key.SK == dynamo.DonorKey(data.SessionID) {
canDelete = true
break
}
}
if !canDelete {
return errors.New("cannot access data of another donor")
}
return s.dynamoClient.DeleteKeys(ctx, keys)
}
func (s *donorStore) DeleteLink(ctx context.Context, shareCodeData actor.ShareCodeData) error {
data, err := page.SessionDataFromContext(ctx)
if err != nil {
return err
}
if data.OrganisationID == "" {
return errors.New("donorStore.DeleteLink requires OrganisationID")
}
if data.OrganisationID != shareCodeData.SessionID {
return errors.New("cannot remove access to another organisations LPA")
}
var link lpaLink
if err := s.dynamoClient.OneByPartialSK(ctx, dynamo.LpaKey(shareCodeData.LpaID), dynamo.SubKey(""), &link); err != nil {
return err
}
if err := s.dynamoClient.DeleteOne(ctx, link.PK, link.SK); err != nil {
return err
}
return s.dynamoClient.DeleteOne(ctx, dynamo.LpaKey(shareCodeData.LpaID), dynamo.DonorKey(link.UserSub()))
}