status-go/protocol/messenger_contacts.go

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package protocol
import (
"context"
"crypto/ecdsa"
"github.com/golang/protobuf/proto"
"github.com/status-im/status-go/protocol/common"
"github.com/status-im/status-go/protocol/protobuf"
)
func (m *Messenger) SaveContact(contact *Contact) error {
m.mutex.Lock()
defer m.mutex.Unlock()
return m.saveContact(contact)
}
func (m *Messenger) AddContact(ctx context.Context, pubKey string) (*MessengerResponse, error) {
m.mutex.Lock()
defer m.mutex.Unlock()
contact, ok := m.allContacts[pubKey]
if !ok {
var err error
contact, err = buildContactFromPkString(pubKey)
if err != nil {
return nil, err
}
}
if !contact.IsAdded() {
contact.SystemTags = append(contact.SystemTags, contactAdded)
}
// We sync the contact with the other devices
err := m.syncContact(context.Background(), contact)
if err != nil {
return nil, err
}
err = m.persistence.SaveContact(contact, nil)
if err != nil {
return nil, err
}
m.allContacts[contact.ID] = contact
// And we re-register for push notications
err = m.reregisterForPushNotifications()
if err != nil {
return nil, err
}
// Create the corresponding profile chat
profileChatID := buildProfileChatID(contact.ID)
profileChat, ok := m.allChats[profileChatID]
if !ok {
builtChat := CreateProfileChat(profileChatID, contact.ID, m.getTimesource())
profileChat = &builtChat
}
// TODO: return filters in messenger response
err = m.Join(*profileChat)
if err != nil {
return nil, err
}
// Finally we send a contact update so they are notified we added them
// TODO: ens and picture are both blank for now
response, err := m.sendContactUpdate(context.Background(), pubKey, "", "")
if err != nil {
return nil, err
}
response.Chats = append(response.Chats, profileChat)
publicKey, err := contact.PublicKey()
if err != nil {
return nil, err
}
// TODO: Add filters to response
_, err = m.transport.InitFilters([]string{profileChat.ID}, []*ecdsa.PublicKey{publicKey})
if err != nil {
return nil, err
}
return response, nil
}
func (m *Messenger) RemoveContact(ctx context.Context, pubKey string) (*MessengerResponse, error) {
m.mutex.Lock()
defer m.mutex.Unlock()
var response *MessengerResponse
contact, ok := m.allContacts[pubKey]
if !ok {
return nil, ErrContactNotFound
}
contact.Remove()
err := m.persistence.SaveContact(contact, nil)
if err != nil {
return nil, err
}
m.allContacts[contact.ID] = contact
// And we re-register for push notications
err = m.reregisterForPushNotifications()
if err != nil {
return nil, err
}
// Create the corresponding profile chat
profileChatID := buildProfileChatID(contact.ID)
_, ok = m.allChats[profileChatID]
if ok {
chatResponse, err := m.deactivateChat(profileChatID)
if err != nil {
return nil, err
}
err = response.Merge(chatResponse)
if err != nil {
return nil, err
}
}
response.Contacts = []*Contact{contact}
return response, nil
}
func (m *Messenger) Contacts() []*Contact {
m.mutex.Lock()
defer m.mutex.Unlock()
var contacts []*Contact
for _, contact := range m.allContacts {
if contact.HasCustomFields() {
contacts = append(contacts, contact)
}
}
return contacts
}
// GetContactByID assumes pubKey includes 0x prefix
func (m *Messenger) GetContactByID(pubKey string) *Contact {
m.mutex.Lock()
defer m.mutex.Unlock()
return m.allContacts[pubKey]
}
func (m *Messenger) BlockContact(contact *Contact) ([]*Chat, error) {
m.mutex.Lock()
defer m.mutex.Unlock()
chats, err := m.persistence.BlockContact(contact)
if err != nil {
return nil, err
}
m.allContacts[contact.ID] = contact
for _, chat := range chats {
m.allChats[chat.ID] = chat
}
delete(m.allChats, contact.ID)
// re-register for push notifications
err = m.reregisterForPushNotifications()
if err != nil {
return nil, err
}
return chats, nil
}
func (m *Messenger) saveContact(contact *Contact) error {
name, identicon, err := generateAliasAndIdenticon(contact.ID)
if err != nil {
return err
}
contact.Identicon = identicon
contact.Alias = name
if m.isNewContact(contact) || m.hasNicknameChanged(contact) {
err := m.syncContact(context.Background(), contact)
if err != nil {
return err
}
}
// We check if it should re-register with the push notification server
shouldReregisterForPushNotifications := (m.isNewContact(contact) || m.removedContact(contact))
err = m.persistence.SaveContact(contact, nil)
if err != nil {
return err
}
m.allContacts[contact.ID] = contact
// Reregister only when data has changed
if shouldReregisterForPushNotifications {
return m.reregisterForPushNotifications()
}
return nil
}
// Send contact updates to all contacts added by us
func (m *Messenger) SendContactUpdates(ctx context.Context, ensName, profileImage string) error {
m.mutex.Lock()
defer m.mutex.Unlock()
myID := contactIDFromPublicKey(&m.identity.PublicKey)
if _, err := m.sendContactUpdate(ctx, myID, ensName, profileImage); err != nil {
return err
}
// TODO: This should not be sending paired messages, as we do it above
for _, contact := range m.allContacts {
if contact.IsAdded() {
if _, err := m.sendContactUpdate(ctx, contact.ID, ensName, profileImage); err != nil {
return err
}
}
}
return nil
}
// NOTE: this endpoint does not add the contact, the reason being is that currently
// that's left as a responsibility to the client, which will call both `SendContactUpdate`
// and `SaveContact` with the correct system tag.
// Ideally we have a single endpoint that does both, but probably best to bring `ENS` name
// on the messenger first.
// SendContactUpdate sends a contact update to a user and adds the user to contacts
func (m *Messenger) SendContactUpdate(ctx context.Context, chatID, ensName, profileImage string) (*MessengerResponse, error) {
m.mutex.Lock()
defer m.mutex.Unlock()
return m.sendContactUpdate(ctx, chatID, ensName, profileImage)
}
func (m *Messenger) sendContactUpdate(ctx context.Context, chatID, ensName, profileImage string) (*MessengerResponse, error) {
var response MessengerResponse
contact, ok := m.allContacts[chatID]
if !ok {
var err error
contact, err = buildContactFromPkString(chatID)
if err != nil {
return nil, err
}
}
chat, ok := m.allChats[chatID]
if !ok {
publicKey, err := contact.PublicKey()
if err != nil {
return nil, err
}
chat = OneToOneFromPublicKey(publicKey, m.getTimesource())
// We don't want to show the chat to the user
chat.Active = false
}
m.allChats[chat.ID] = chat
clock, _ := chat.NextClockAndTimestamp(m.getTimesource())
contactUpdate := &protobuf.ContactUpdate{
Clock: clock,
EnsName: ensName,
ProfileImage: profileImage}
encodedMessage, err := proto.Marshal(contactUpdate)
if err != nil {
return nil, err
}
_, err = m.dispatchMessage(ctx, common.RawMessage{
LocalChatID: chatID,
Payload: encodedMessage,
MessageType: protobuf.ApplicationMetadataMessage_CONTACT_UPDATE,
ResendAutomatically: true,
})
if err != nil {
return nil, err
}
response.Contacts = []*Contact{contact}
response.Chats = []*Chat{chat}
chat.LastClockValue = clock
err = m.saveChat(chat)
if err != nil {
return nil, err
}
return &response, m.saveContact(contact)
}
func (m *Messenger) isNewContact(contact *Contact) bool {
previousContact, ok := m.allContacts[contact.ID]
return contact.IsAdded() && (!ok || !previousContact.IsAdded())
}
func (m *Messenger) hasNicknameChanged(contact *Contact) bool {
previousContact, ok := m.allContacts[contact.ID]
if !ok {
return false
}
return contact.LocalNickname != previousContact.LocalNickname
}
func (m *Messenger) removedContact(contact *Contact) bool {
previousContact, ok := m.allContacts[contact.ID]
if !ok {
return false
}
return previousContact.IsAdded() && !contact.IsAdded()
}