status-im/status-go

package protocol

import (
    "context"
    "fmt"
    "testing"

    "github.com/stretchr/testify/suite"
    "go.uber.org/zap"

    "github.com/status-im/status-go/deprecation"
    "github.com/status-im/status-go/eth-node/crypto"
    "github.com/status-im/status-go/eth-node/types"
    multiaccountscommon "github.com/status-im/status-go/multiaccounts/common"
    "github.com/status-im/status-go/multiaccounts/settings"
    "github.com/status-im/status-go/protocol/common"
    "github.com/status-im/status-go/protocol/protobuf"
    "github.com/status-im/status-go/protocol/requests"
    v1protocol "github.com/status-im/status-go/protocol/v1"
)

func TestMessengerContactRequestSuite(t *testing.T) {
    suite.Run(t, new(MessengerContactRequestSuite))
}

type MessengerContactRequestSuite struct {
    MessengerBaseTestSuite
}

func (s *MessengerContactRequestSuite) findFirstByContentType(messages []*common.Message, contentType protobuf.ChatMessage_ContentType) *common.Message {
    return FindFirstByContentType(messages, contentType)
}

func (s *MessengerContactRequestSuite) sendContactRequest(request *requests.SendContactRequest, messenger *Messenger) {
    s.logger.Info("sendContactRequest", zap.String("sender", messenger.IdentityPublicKeyString()), zap.String("receiver", request.ID))

    // Send contact request
    resp, err := messenger.SendContactRequest(context.Background(), request)
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check CR and mutual state update messages
    s.Require().Len(resp.Messages(), 2)

    mutualStateUpdate := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_SENT)
    s.Require().NotNil(mutualStateUpdate)

    s.Require().NotNil(mutualStateUpdate.ID)
    s.Require().Equal(mutualStateUpdate.From, messenger.myHexIdentity())
    s.Require().Equal(mutualStateUpdate.ChatId, request.ID)
    s.Require().Equal(mutualStateUpdate.Text, fmt.Sprintf(outgoingMutualStateEventSentDefaultText, request.ID))

    contactRequest := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequest)

    s.Require().Equal(common.ContactRequestStatePending, contactRequest.ContactRequestState)
    s.Require().Equal(request.Message, contactRequest.Text)

    // Check pending notification
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(ActivityCenterNotificationTypeContactRequest, resp.ActivityCenterNotifications()[0].Type)
    s.Require().Equal(contactRequest.ID, resp.ActivityCenterNotifications()[0].Message.ID)
    s.Require().Equal(contactRequest.ContactRequestState, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Read, true)

    // Check contacts
    s.Require().Len(resp.Contacts, 1)
    contact := resp.Contacts[0]
    s.Require().False(contact.mutual())

    // Make sure it's not returned as coming from us
    contactRequests, _, err := messenger.PendingContactRequests("", 10)
    s.Require().NoError(err)
    s.Require().Len(contactRequests, 0)

    // Make sure contact is added on the sender side
    contacts := messenger.AddedContacts()
    s.Require().Len(contacts, 1)
    s.Require().Equal(ContactRequestStateSent, contacts[0].ContactRequestLocalState)
    s.Require().NotNil(contacts[0].DisplayName)

    // Check contact's primary name matches notification's name
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Name, contacts[0].PrimaryName())
}

func (s *MessengerContactRequestSuite) receiveContactRequest(messageText string, theirMessenger *Messenger) *common.Message {
    s.logger.Info("receiveContactRequest", zap.String("receiver", theirMessenger.IdentityPublicKeyString()))

    // Wait for the message to reach its destination
    resp, err := WaitOnMessengerResponse(
        theirMessenger,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) == 1 && len(r.Messages()) >= 2 && len(r.ActivityCenterNotifications()) == 1
        },
        "no messages",
    )

    // Check contact request has been received
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check CR and mutual state update messages
    s.Require().Len(resp.Messages(), 2)

    contactRequest := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequest)

    s.Require().Equal(common.ContactRequestStatePending, contactRequest.ContactRequestState)
    s.Require().Equal(messageText, contactRequest.Text)

    mutualStateUpdate := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_SENT)
    s.Require().NotNil(mutualStateUpdate)

    s.Require().Equal(mutualStateUpdate.From, contactRequest.From)
    s.Require().Equal(mutualStateUpdate.ChatId, contactRequest.From)
    s.Require().Equal(mutualStateUpdate.Text, fmt.Sprintf(incomingMutualStateEventSentDefaultText, contactRequest.From))

    // Check activity center notification is of the right type
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(ActivityCenterNotificationTypeContactRequest, resp.ActivityCenterNotifications()[0].Type)
    s.Require().Equal(contactRequest.ID, resp.ActivityCenterNotifications()[0].Message.ID)
    s.Require().Equal(contactRequest.ContactRequestState, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Read, false)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Accepted, false)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Dismissed, false)

    notifications, err := theirMessenger.ActivityCenterNotifications(ActivityCenterNotificationsRequest{
        Cursor:        "",
        Limit:         10,
        ActivityTypes: []ActivityCenterType{ActivityCenterNotificationTypeContactRequest},
        ReadType:      ActivityCenterQueryParamsReadUnread,
    },
    )
    s.Require().NoError(err)
    s.Require().Len(notifications.Notifications, 1)
    s.Require().Equal(contactRequest.ID, notifications.Notifications[0].Message.ID)
    s.Require().Equal(contactRequest.ContactRequestState, notifications.Notifications[0].Message.ContactRequestState)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    contact := resp.Contacts[0]
    s.Require().Equal(ContactRequestStateReceived, contact.ContactRequestRemoteState)

    // Check contact's primary name matches notification's name
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Name, contact.PrimaryName())

    // Make sure it's the latest pending contact requests
    contactRequests, _, err := theirMessenger.PendingContactRequests("", 10)
    s.Require().NoError(err)
    s.Require().Greater(len(contactRequests), 0)
    s.Require().Equal(contactRequests[0].ID, contactRequest.ID)

    // Confirm latest pending contact request
    resp, err = theirMessenger.GetLatestContactRequestForContact(contactRequest.From)
    s.Require().NoError(err)
    s.Require().Len(resp.Messages(), 1)
    s.Require().Equal(contactRequest.ID, resp.Messages()[0].ID)
    s.Require().Equal(common.ContactRequestStatePending, resp.Messages()[0].ContactRequestState)

    return contactRequest
}

// This function partially logs given MessengerResponse with description.
// This is helpful for testing response content during long tests.
// Logged contents: Messages, Contacts, ActivityCenterNotifications
func (s *MessengerContactRequestSuite) logResponse(response *MessengerResponse, description string) {
    s.logger.Debug("MessengerResponse", zap.String("description", description))

    for i, message := range response.Messages() {
        s.logger.Debug("message",
            zap.Int("index", i),
            zap.String("Text", message.Text),
            zap.Any("ContentType", message.ContentType),
        )
    }

    for i, contact := range response.Contacts {
        s.logger.Debug("contact",
            zap.Int("index", i),
            zap.Bool("Blocked", contact.Blocked),
            zap.Bool("Removed", contact.Removed),
            zap.Any("crRemoteState", contact.ContactRequestLocalState),
            zap.Any("crLocalState", contact.ContactRequestRemoteState),
        )
    }

    for i, notification := range response.ActivityCenterNotifications() {
        messageText := ""
        if notification.Message != nil {
            messageText = notification.Message.Text
        }
        s.logger.Debug("acNotification",
            zap.Int("index", i),
            zap.Any("id", notification.ID),
            zap.Any("Type", notification.Type),
            zap.String("Message", messageText),
            zap.String("Name", notification.Name),
            zap.String("Author", notification.Author),
        )
    }
}

func (s *MessengerContactRequestSuite) acceptContactRequest(
    contactRequest *common.Message, sender *Messenger, receiver *Messenger) {
    s.logger.Info("acceptContactRequest",
        zap.String("sender", sender.IdentityPublicKeyString()),
        zap.String("receiver", receiver.IdentityPublicKeyString()))

    // Accept contact request, receiver side
    resp, err := receiver.AcceptContactRequest(context.Background(), &requests.AcceptContactRequest{ID: types.Hex2Bytes(contactRequest.ID)})
    s.Require().NoError(err)

    // Chack updated contact request message and mutual state update
    s.Require().NotNil(resp)
    s.Require().Len(resp.Messages(), 2)

    contactRequestMsg := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequestMsg)

    mutualStateUpdate := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_ACCEPTED)
    s.Require().NotNil(mutualStateUpdate)

    s.Require().Equal(contactRequestMsg.ID, contactRequest.ID)
    s.Require().Equal(common.ContactRequestStateAccepted, contactRequestMsg.ContactRequestState)

    s.Require().Equal(mutualStateUpdate.ChatId, contactRequestMsg.From)
    s.Require().Equal(mutualStateUpdate.From, contactRequestMsg.ChatId)
    s.Require().Equal(mutualStateUpdate.Text, fmt.Sprintf(outgoingMutualStateEventAcceptedDefaultText, contactRequestMsg.From))

    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].ID.String(), contactRequest.ID)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().True(resp.Contacts[0].mutual())

    // Check contact's primary name matches notification's name
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Name, resp.Contacts[0].PrimaryName())

    // Check we have active chat in the response
    s.Require().Len(resp.Chats(), 1)
    s.Require().True(resp.Chats()[0].Active)

    // Make sure the sender is added to our contacts
    contacts := receiver.AddedContacts()
    s.Require().Len(contacts, 1)

    // Make sure we consider them a mutual contact, receiver side
    mutualContacts := receiver.MutualContacts()
    s.Require().Len(mutualContacts, 1)

    // Confirm latest pending contact request
    resp, err = receiver.GetLatestContactRequestForContact(sender.IdentityPublicKeyString())
    s.Require().NoError(err)
    s.Require().Len(resp.Messages(), 1)
    s.Require().Equal(contactRequest.ID, resp.Messages()[0].ID)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.Messages()[0].ContactRequestState)

    // Wait for the message to reach its destination
    resp, err = WaitOnMessengerResponse(sender,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) == 1 && len(r.Messages()) == 2
        },
        "contact request acceptance not received",
    )
    s.logResponse(resp, "acceptContactRequest")
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check activity center notification is of the right type
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(ActivityCenterNotificationTypeContactRequest, resp.ActivityCenterNotifications()[0].Type)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Read, true)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Accepted, true)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Dismissed, false)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)

    // Make sure the message is updated, sender side
    s.Require().Len(resp.Messages(), 2)

    contactRequestMsg = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequestMsg)

    mutualStateUpdate = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_ACCEPTED)
    s.Require().NotNil(mutualStateUpdate)

    s.Require().Equal(contactRequest.ID, contactRequestMsg.ID)
    s.Require().Equal(contactRequest.Text, contactRequestMsg.Text)
    s.Require().Equal(common.ContactRequestStateAccepted, contactRequestMsg.ContactRequestState)

    s.Require().Equal(mutualStateUpdate.From, contactRequestMsg.ChatId)
    s.Require().Equal(mutualStateUpdate.ChatId, contactRequestMsg.ChatId)
    s.Require().Equal(mutualStateUpdate.Text, fmt.Sprintf(incomingMutualStateEventAcceptedDefaultText, contactRequestMsg.ChatId))

    // Make sure we consider them a mutual contact, sender side
    mutualContacts = s.m.MutualContacts()
    s.Require().Len(mutualContacts, 1)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    contact := resp.Contacts[0]
    s.Require().True(contact.mutual())

    // Check contact's primary name matches notification's name
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Name, contact.PrimaryName())

    // Sender's side chat should be active after the accepting the CR
    chat, ok := s.m.allChats.Load(contact.ID)
    s.Require().True(ok)
    s.Require().NotNil(chat)
    s.Require().True(chat.Active)

    // Receiver's side chat should be also active after the accepting the CR
    myID := types.EncodeHex(crypto.FromECDSAPub(&s.m.identity.PublicKey))
    chat, ok = receiver.allChats.Load(myID)
    s.Require().True(ok)
    s.Require().NotNil(chat)
    s.Require().True(chat.Active)
}

func (s *MessengerContactRequestSuite) checkMutualContact(messenger *Messenger, contactPublicKey string) {
    contacts := messenger.AddedContacts()
    s.Require().Len(contacts, 1)
    contact := contacts[0]
    s.Require().Equal(contactPublicKey, contact.ID)
    s.Require().True(contact.mutual())
}

func (s *MessengerContactRequestSuite) createContactRequest(contactPublicKey string, messageText string) *requests.SendContactRequest {
    return &requests.SendContactRequest{
        ID:      contactPublicKey,
        Message: messageText,
    }
}

func (s *MessengerContactRequestSuite) declineContactRequest(contactRequest *common.Message, theirMessenger *Messenger) {
    // Dismiss contact request, receiver side
    resp, err := theirMessenger.DeclineContactRequest(context.Background(), &requests.DeclineContactRequest{ID: types.Hex2Bytes(contactRequest.ID)})
    s.Require().NoError(err)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().Equal(ContactRequestStateDismissed, resp.Contacts[0].ContactRequestLocalState)

    // Make sure the message is updated
    s.Require().NotNil(resp)
    s.Require().Len(resp.Messages(), 1)
    s.Require().Equal(resp.Messages()[0].ID, contactRequest.ID)
    s.Require().Equal(common.ContactRequestStateDismissed, resp.Messages()[0].ContactRequestState)

    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].ID.String(), contactRequest.ID)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Read, true)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Accepted, false)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Dismissed, true)
    s.Require().Equal(common.ContactRequestStateDismissed, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)

    // Check contact's primary name matches notification's name
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Name, resp.Contacts[0].PrimaryName())

    // Make sure the sender is not added to our contacts
    contacts := theirMessenger.AddedContacts()
    s.Require().Len(contacts, 0)
}

func (s *MessengerContactRequestSuite) retractContactRequest(contactID string, theirMessenger *Messenger) {
    resp, err := s.m.RetractContactRequest(&requests.RetractContactRequest{ID: types.Hex2Bytes(contactID)})
    s.Require().NoError(err)
    s.Require().NotNil(resp)
    s.Require().Len(resp.Contacts, 1)
    s.Require().False(resp.Contacts[0].hasAddedUs())
    s.Require().False(resp.Contacts[0].added())

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().Equal(ContactRequestStateNone, resp.Contacts[0].ContactRequestLocalState)
    s.Require().Equal(ContactRequestStateNone, resp.Contacts[0].ContactRequestRemoteState)

    // Check outgoing mutual state message
    s.Require().Len(resp.Messages(), 1)
    mutualStateUpdate := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_REMOVED)
    s.Require().NotNil(mutualStateUpdate)

    myID := types.EncodeHex(crypto.FromECDSAPub(&s.m.identity.PublicKey))
    s.Require().Equal(mutualStateUpdate.From, myID)
    s.Require().Equal(mutualStateUpdate.ChatId, contactID)
    s.Require().Equal(mutualStateUpdate.Text, fmt.Sprintf(outgoingMutualStateEventRemovedDefaultText, contactID))

    // Wait for the message to reach its destination
    resp, err = WaitOnMessengerResponse(
        theirMessenger,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) > 0 && len(r.ActivityCenterNotifications()) == 1
        },
        "no messages",
    )
    s.Require().NoError(err)
    s.Require().NotNil(resp)
    s.Require().Len(resp.Contacts, 1)

    s.Require().Equal(myID, resp.Contacts[0].ID)

    s.Require().False(resp.Contacts[0].added())
    s.Require().False(resp.Contacts[0].hasAddedUs())
    s.Require().Equal(ContactRequestStateNone, resp.Contacts[0].ContactRequestLocalState)
    s.Require().Equal(ContactRequestStateNone, resp.Contacts[0].ContactRequestRemoteState)

    // Check pending notification
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(ActivityCenterNotificationTypeContactRemoved, resp.ActivityCenterNotifications()[0].Type)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Read, false)

    // Check incoming mutual state message
    s.Require().Len(resp.Messages(), 1)
    mutualStateUpdate = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_REMOVED)
    s.Require().NotNil(mutualStateUpdate)

    s.Require().Equal(mutualStateUpdate.From, myID)
    s.Require().Equal(mutualStateUpdate.ChatId, myID)
    s.Require().Equal(mutualStateUpdate.Text, fmt.Sprintf(incomingMutualStateEventRemovedDefaultText, myID))
}

func (s *MessengerContactRequestSuite) syncInstallationContactV2FromContact(contact *Contact) protobuf.SyncInstallationContactV2 {
    return protobuf.SyncInstallationContactV2{
        LastUpdatedLocally:        contact.LastUpdatedLocally,
        LastUpdated:               contact.LastUpdated,
        Id:                        contact.ID,
        DisplayName:               contact.DisplayName,
        EnsName:                   contact.EnsName,
        LocalNickname:             contact.LocalNickname,
        Added:                     contact.added(),
        Blocked:                   contact.Blocked,
        Muted:                     false,
        HasAddedUs:                contact.hasAddedUs(),
        Removed:                   contact.Removed,
        ContactRequestLocalState:  int64(contact.ContactRequestLocalState),
        ContactRequestRemoteState: int64(contact.ContactRequestRemoteState),
        ContactRequestRemoteClock: int64(contact.ContactRequestRemoteClock),
        ContactRequestLocalClock:  int64(contact.ContactRequestLocalClock),
        VerificationStatus:        int64(contact.VerificationStatus),
        TrustStatus:               int64(contact.TrustStatus),
    }
}

func (s *MessengerContactRequestSuite) TestReceiveAndAcceptContactRequest() { //nolint: unused
    messageText := "hello!"

    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageText,
    }
    s.sendContactRequest(request, s.m)
    contactRequest := s.receiveContactRequest(messageText, theirMessenger)
    s.acceptContactRequest(contactRequest, s.m, theirMessenger)
}

func (s *MessengerContactRequestSuite) TestReceiveAndDismissContactRequest() {
    messageText := "hello!"

    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageText,
    }
    s.sendContactRequest(request, s.m)
    contactRequest := s.receiveContactRequest(messageText, theirMessenger)
    s.declineContactRequest(contactRequest, theirMessenger)
}

func (s *MessengerContactRequestSuite) TestReceiveAcceptAndRetractContactRequest() { //nolint: unused
    messageText := "hello!"

    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    s.Require().NoError(theirMessenger.settings.SaveSettingField(settings.MutualContactEnabled, true))

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageText,
    }
    s.sendContactRequest(request, s.m)
    contactRequest := s.receiveContactRequest(messageText, theirMessenger)
    s.acceptContactRequest(contactRequest, s.m, theirMessenger)
    s.retractContactRequest(contactID, theirMessenger)
}

// The scenario tested is as follow:
//  1. Repeat 5 times:
//     2.1) Alice sends a contact request to Bob
//     2.2) Bob accepts the contact request
//     2.3) Alice removes bob from contacts
func (s *MessengerContactRequestSuite) TestAcceptCRRemoveAndRepeat() {
    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))

    for i := 0; i < 5; i++ {
        messageText := fmt.Sprintf("hello %d", i)
        request := &requests.SendContactRequest{
            ID:      contactID,
            Message: messageText,
        }
        s.sendContactRequest(request, s.m)
        contactRequest := s.receiveContactRequest(messageText, theirMessenger)
        s.acceptContactRequest(contactRequest, s.m, theirMessenger)
        s.retractContactRequest(contactID, theirMessenger)
    }
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob declines the contact request
// 3) Alice fails to send a new contact request to Bob
func (s *MessengerContactRequestSuite) TestAliceTriesToSpamBobWithContactRequests() {
    messageTextAlice := "You wanna play with fire, Bobby?!"
    alice := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to Bob
    request := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageTextAlice,
    }
    s.sendContactRequest(request, alice)

    contactRequest := s.receiveContactRequest(messageTextAlice, bob)
    s.Require().NotNil(contactRequest)

    // Bob declines the contact request
    s.declineContactRequest(contactRequest, bob)

    // Alice sends a new contact request
    resp, err := alice.SendContactRequest(context.Background(), request)
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check CR and mutual state update messages
    s.Require().Len(resp.Messages(), 2)

    contactRequest = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequest)

    s.Require().Equal(common.ContactRequestStatePending, contactRequest.ContactRequestState)
    s.Require().Equal(request.Message, contactRequest.Text)

    // We should not receive a CR from a rejected contact
    _, err = WaitOnMessengerResponse(
        bob,
        func(r *MessengerResponse) bool {
            return len(r.Messages()) > 0 &&
                s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST) != nil
        },
        "no messages",
    )
    s.Require().Error(err)
    s.Require().ErrorContains(err, "no messages")
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob accepts the contact
// 3) Bob accepts the contact request (again!)
// 4) No extra mesages on Alice's side
func (s *MessengerContactRequestSuite) TestAliceSeesOnlyOneAcceptFromBob() {
    messageTextAlice := "You wanna play with fire, Bobby?!"
    alice := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to Bob
    request := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageTextAlice,
    }
    s.sendContactRequest(request, alice)

    contactRequest := s.receiveContactRequest(messageTextAlice, bob)
    s.Require().NotNil(contactRequest)

    // Bob accepts the contact request
    s.acceptContactRequest(contactRequest, alice, bob)

    // Accept contact request again
    _, err := bob.AcceptContactRequest(context.Background(), &requests.AcceptContactRequest{ID: types.Hex2Bytes(contactRequest.ID)})
    s.Require().NoError(err)

    // Check we don't have extra messages on Alice's side
    resp, err := WaitOnMessengerResponse(alice,
        func(r *MessengerResponse) bool {
            return len(r.ActivityCenterNotifications()) == 1 && len(r.Messages()) == 1
        },
        "contact request acceptance not received",
    )
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check activity center notification is of the right type
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(ActivityCenterNotificationTypeContactRequest, resp.ActivityCenterNotifications()[0].Type)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Read, true)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Accepted, true)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Dismissed, false)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)

    // Make sure the message is updated, sender side
    s.Require().Len(resp.Messages(), 1)

    contactRequest = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequest)

    s.Require().Equal(common.ContactRequestStateAccepted, contactRequest.ContactRequestState)
    s.Require().Equal(request.Message, contactRequest.Text)
}

func (s *MessengerContactRequestSuite) TestReceiveAndAcceptContactRequestTwice() { //nolint: unused
    messageText := "hello!"

    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageText,
    }
    s.sendContactRequest(request, s.m)
    contactRequest := s.receiveContactRequest(messageText, theirMessenger)
    s.acceptContactRequest(contactRequest, s.m, theirMessenger)

    // Resend contact request with higher clock value
    resp, err := s.m.SendContactRequest(context.Background(), request)
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check CR and mutual state update messages
    s.Require().Len(resp.Messages(), 2)

    contactRequest = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequest)

    s.Require().Equal(common.ContactRequestStateAccepted, contactRequest.ContactRequestState)
    s.Require().Equal(request.Message, contactRequest.Text)

    // We should not receive a CR from a mutual contact
    _, err = WaitOnMessengerResponse(
        theirMessenger,
        func(r *MessengerResponse) bool {
            return len(r.Messages()) > 0 &&
                s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST) != nil
        },
        "no messages",
    )
    s.Require().Error(err)
    s.Require().ErrorContains(err, "no messages")
}

func (s *MessengerContactRequestSuite) TestAcceptLatestContactRequestForContact() {
    messageText := "hello!"

    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageText,
    }
    s.sendContactRequest(request, s.m)
    contactRequest := s.receiveContactRequest(messageText, theirMessenger)

    // Accept latest contact request, receiver side
    myID := types.EncodeHex(crypto.FromECDSAPub(&s.m.identity.PublicKey))
    resp, err := theirMessenger.AcceptLatestContactRequestForContact(context.Background(), &requests.AcceptLatestContactRequestForContact{ID: types.Hex2Bytes(myID)})
    s.Require().NoError(err)

    // Make sure the message is updated
    s.Require().NotNil(resp)
    s.Require().Len(resp.Messages(), 2)

    contactRequestMsg := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequestMsg)

    mutualStateUpdate := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_ACCEPTED)
    s.Require().NotNil(mutualStateUpdate)

    s.Require().Equal(contactRequestMsg.ID, contactRequest.ID)
    s.Require().Equal(common.ContactRequestStateAccepted, contactRequestMsg.ContactRequestState)

    s.Require().Equal(mutualStateUpdate.From, contactRequest.ChatId)
    s.Require().Equal(mutualStateUpdate.ChatId, contactRequest.From)

    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].ID.String(), contactRequest.ID)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().True(resp.Contacts[0].mutual())

    // Make sure the sender is added to our contacts
    contacts := theirMessenger.AddedContacts()
    s.Require().Len(contacts, 1)

    // Make sure we consider them a mutual contact, receiver side
    mutualContacts := theirMessenger.MutualContacts()
    s.Require().Len(mutualContacts, 1)

    // Wait for the message to reach its destination
    resp, err = WaitOnMessengerResponse(
        s.m,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) == 1 && len(r.Messages()) == 2 && len(r.ActivityCenterNotifications()) == 1
        },
        "no messages",
    )
    s.Require().NoError(err)

    // Make sure the message is updated, sender side
    s.Require().NotNil(resp)

    s.Require().Len(resp.Messages(), 2)

    contactRequestMsg = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequestMsg)

    mutualStateUpdate = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_SYSTEM_MESSAGE_MUTUAL_EVENT_ACCEPTED)
    s.Require().NotNil(mutualStateUpdate)

    s.Require().Equal(common.ContactRequestStateAccepted, contactRequestMsg.ContactRequestState)

    s.Require().Equal(mutualStateUpdate.From, contactRequest.ChatId)
    s.Require().Equal(mutualStateUpdate.ChatId, contactRequest.ChatId)

    // Check activity center notification is of the right type
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(ActivityCenterNotificationTypeContactRequest, resp.ActivityCenterNotifications()[0].Type)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)

    // Make sure we consider them a mutual contact, sender side
    mutualContacts = s.m.MutualContacts()
    s.Require().Len(mutualContacts, 1)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().True(resp.Contacts[0].mutual())
}

func (s *MessengerContactRequestSuite) TestDismissLatestContactRequestForContact() {
    messageText := "hello!"

    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageText,
    }
    s.sendContactRequest(request, s.m)
    contactRequest := s.receiveContactRequest(messageText, theirMessenger)

    // Dismiss latest contact request, receiver side
    myID := types.EncodeHex(crypto.FromECDSAPub(&s.m.identity.PublicKey))
    resp, err := theirMessenger.DismissLatestContactRequestForContact(context.Background(), &requests.DismissLatestContactRequestForContact{ID: types.Hex2Bytes(myID)})
    s.Require().NoError(err)

    // Make sure the message is updated
    s.Require().NotNil(resp)
    s.Require().Len(resp.Messages(), 1)
    s.Require().Equal(resp.Messages()[0].ID, contactRequest.ID)
    s.Require().Equal(common.ContactRequestStateDismissed, resp.Messages()[0].ContactRequestState)

    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].ID.String(), contactRequest.ID)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)
    s.Require().Equal(common.ContactRequestStateDismissed, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)
}

func (s *MessengerContactRequestSuite) TestPairedDevicesRemoveContact() {
    messageText := "hello!"

    alice1 := s.m
    alice2, err := newMessengerWithKey(s.shh, s.m.identity, s.logger, nil)
    s.Require().NoError(err)
    defer TearDownMessenger(&s.Suite, alice2)

    prepAliceMessengersForPairing(&s.Suite, alice1, alice2)

    PairDevices(&s.Suite, alice1, alice2)
    PairDevices(&s.Suite, alice2, alice1)

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    // Alice sends a contact request to bob
    contactID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageText,
    }
    s.sendContactRequest(request, alice1)
    contactRequest := s.receiveContactRequest(messageText, bob)
    s.acceptContactRequest(contactRequest, alice1, bob)

    // Wait for the message to reach its destination
    resp, err := WaitOnMessengerResponse(
        alice2,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) > 0
        },
        "no messages",
    )
    s.Require().NoError(err)

    // Make sure we consider them a mutual contact, sender side
    mutualContacts := alice2.MutualContacts()
    s.Require().Len(mutualContacts, 1)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().True(resp.Contacts[0].mutual())

    s.retractContactRequest(contactID, bob)

    // Check on alice2 side
    resp, err = WaitOnMessengerResponse(
        alice2,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) > 0
        },
        "no messages",
    )
    s.Require().NoError(err)
    s.Require().NotNil(resp)
    s.Require().Len(resp.Contacts, 1)

    // Check the contact state is correctly set
    s.Require().Equal(ContactRequestStateNone, resp.Contacts[0].ContactRequestLocalState)
    s.Require().Equal(ContactRequestStateNone, resp.Contacts[0].ContactRequestRemoteState)
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob accepts the contact request
// 3) Alice restores state on a different device
// 4) Alice sends a contact request to bob
// Bob will need to help Alice recover her state, since as far as he can see
// that's an already accepted contact request
func (s *MessengerContactRequestSuite) TestAliceRecoverStateSendContactRequest() {
    messageText := "hello!"

    alice1 := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to bob
    request := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageText,
    }
    s.sendContactRequest(request, alice1)

    contactRequest := s.receiveContactRequest(messageText, bob)
    s.Require().NotNil(contactRequest)

    // Bob accepts the contact request
    s.acceptContactRequest(contactRequest, alice1, bob)

    // Alice resets her device
    alice2, err := newMessengerWithKey(s.shh, s.m.identity, s.logger, nil)
    s.Require().NoError(err)
    defer TearDownMessenger(&s.Suite, alice2)

    // adds bob again to her device
    s.sendContactRequest(request, alice2)

    // Wait for the message to reach its destination
    _, err = WaitOnMessengerResponse(
        bob,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) > 0
        },
        "no messages",
    )
    s.Require().NoError(err)

    // Bob should be a mutual contact with alice, nothing has changed
    s.Require().Len(bob.MutualContacts(), 1)

    // Alice retrieves her messages, she should have been notified by
    // dear bobby that they were contacts
    resp, err := WaitOnMessengerResponse(
        alice2,
        func(r *MessengerResponse) bool {
            return len(r.Contacts) > 0
        },
        "no messages",
    )
    s.Require().NoError(err)
    s.Require().NotNil(resp)
    s.Require().Len(resp.Contacts, 1)

    // Check the contact state is correctly set
    s.Require().True(resp.Contacts[0].mutual())
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob accepts the contact request
// 3) Alice restores state on a different device
// 4) Bob sends a message to alice
// Alice will show a contact request from bob
func (s *MessengerContactRequestSuite) TestAliceRecoverStateReceiveContactRequest() {
    messageText := "hello!"

    alice1 := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to bob
    request := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageText,
    }
    s.sendContactRequest(request, alice1)

    contactRequest := s.receiveContactRequest(messageText, bob)
    s.Require().NotNil(contactRequest)

    // Bob accepts the contact request
    s.acceptContactRequest(contactRequest, alice1, bob)

    // Alice resets her device
    alice2, err := newMessengerWithKey(s.shh, s.m.identity, s.logger, nil)
    s.Require().NoError(err)
    defer TearDownMessenger(&s.Suite, alice2)

    // We want to facilitate the discovery of the x3dh bundl here, since bob does not know about alice device

    alice2Bundle, err := alice2.encryptor.GetBundle(alice2.identity)
    s.Require().NoError(err)

    _, err = bob.encryptor.ProcessPublicBundle(bob.identity, alice2Bundle)
    s.Require().NoError(err)

    // Bob sends a chat message to alice

    var chat Chat
    chats := bob.Chats()
    for i, c := range chats {
        if c.ID == alice1.myHexIdentity() && c.OneToOne() {
            chat = *chats[i]
        }
    }
    s.Require().NotNil(chat)

    inputMessage := buildTestMessage(chat)
    _, err = bob.SendChatMessage(context.Background(), inputMessage)
    s.NoError(err)

    // Alice retrieves the chat message, it should be
    resp, err := WaitOnMessengerResponse(
        alice2,
        func(r *MessengerResponse) bool {
            return len(r.ActivityCenterNotifications()) == 1
        },
        "no messages",
    )
    s.Require().NoError(err)
    s.Require().NotNil(resp)
    s.Require().Equal(ActivityCenterNotificationTypeContactRequest, resp.ActivityCenterNotifications()[0].Type)
    s.Require().Len(resp.Contacts, 1)

    // Check the contact state is correctly set
    s.Require().Equal(ContactRequestStateNone, resp.Contacts[0].ContactRequestLocalState)
    s.Require().Equal(ContactRequestStateReceived, resp.Contacts[0].ContactRequestRemoteState)
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob accepts the contact request
// 3) Bob goes offline
// 4) Alice retracts the contact request
// 5) Alice adds bob back to her contacts
// 6) Bob goes online, they receive 4 and 5 in the correct order
func (s *MessengerContactRequestSuite) TestAliceOfflineRetractsAndAddsCorrectOrder() {
    messageText := "hello!"

    alice1 := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to bob
    request := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageText,
    }
    s.sendContactRequest(request, alice1)

    contactRequest := s.receiveContactRequest(messageText, bob)
    s.Require().NotNil(contactRequest)

    // Bob accepts the contact request
    s.acceptContactRequest(contactRequest, alice1, bob)

    // Alice removes Bob from contacts
    _, err := alice1.RetractContactRequest(&requests.RetractContactRequest{ID: types.Hex2Bytes(bob.myHexIdentity())})
    s.Require().NoError(err)

    // Adds bob again to her device
    s.sendContactRequest(request, alice1)

    // Wait for the message to reach its destination
    _, err = WaitOnMessengerResponse(
        bob,
        func(r *MessengerResponse) bool {
            return len(r.ActivityCenterNotifications()) > 0
        },
        "no messages",
    )
    s.Require().NoError(err)
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob accepts the contact request
// 3) Bob goes offline
// 4) Alice retracts the contact request
// 5) Alice adds bob back to her contacts
// 6) Bob goes online, they receive 4 and 5 in the wrong order
func (s *MessengerContactRequestSuite) TestAliceOfflineRetractsAndAddsWrongOrder() {
    messageText := "hello!"

    alice1 := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to bob
    request := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageText,
    }
    s.sendContactRequest(request, alice1)

    contactRequest := s.receiveContactRequest(messageText, bob)
    s.Require().NotNil(contactRequest)

    // Bob accepts the contact request
    s.acceptContactRequest(contactRequest, alice1, bob)

    // Alice removes Bob from contacts
    _, err := alice1.RetractContactRequest(&requests.RetractContactRequest{ID: types.Hex2Bytes(bob.myHexIdentity())})
    s.Require().NoError(err)

    // Adds bob again to her device
    s.sendContactRequest(request, alice1)

    // Get alice perspective of bob
    bobFromAlice := alice1.AddedContacts()[0]

    // Get bob perspective of alice
    aliceFromBob := bob.MutualContacts()[0]

    s.Require().NotNil(bobFromAlice)
    s.Require().NotNil(aliceFromBob)

    // We can't simulate out-of-order messages easily, so we need to do
    // things manually here
    result := aliceFromBob.ContactRequestPropagatedStateReceived(bobFromAlice.ContactRequestPropagatedState())
    s.Require().True(result.newContactRequestReceived)
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob accepts the contact request
// 3) Alice removes Bob from contacts
// 4) Make sure Alice and Bob are not mutual contacts
// 5) Alice sends new contact request
// 6) Bob accepts new contact request
func (s *MessengerContactRequestSuite) TestAliceResendsContactRequestAfterRemovingBobFromContacts() {
    messageTextFirst := "hello 1!"

    theirMessenger := s.newMessenger()
    defer TearDownMessenger(&s.Suite, theirMessenger)

    contactID := types.EncodeHex(crypto.FromECDSAPub(&theirMessenger.identity.PublicKey))

    // Alice sends a contact request to Bob
    request := &requests.SendContactRequest{
        ID:      contactID,
        Message: messageTextFirst,
    }
    s.sendContactRequest(request, s.m)

    // Bob accepts the contact request
    contactRequest := s.receiveContactRequest(messageTextFirst, theirMessenger)
    s.Require().NotNil(contactRequest)
    s.acceptContactRequest(contactRequest, s.m, theirMessenger)

    // Alice removes Bob from contacts
    s.retractContactRequest(contactID, theirMessenger)

    // Send new contact request
    messageTextSecond := "hello 2!"

    // Alice sends new contact request
    request = &requests.SendContactRequest{
        ID:      contactID,
        Message: messageTextSecond,
    }
    s.sendContactRequest(request, s.m)

    // Make sure bob and alice are not mutual after sending CR
    s.Require().Len(s.m.MutualContacts(), 0)
    s.Require().Len(theirMessenger.MutualContacts(), 0)

    // Bob accepts new contact request
    contactRequest = s.receiveContactRequest(messageTextSecond, theirMessenger)
    s.Require().NotNil(contactRequest)
    s.acceptContactRequest(contactRequest, s.m, theirMessenger)

    // Make sure bob and alice are not mutual after sending CR
    s.Require().Len(s.m.MutualContacts(), 1)
    s.Require().Len(theirMessenger.MutualContacts(), 1)
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob declines the contact request from Alice
// 3) Bob sends a contact request to Alice
// 4) Alice and Bob are mutual contacts (because Alice's CR is "pending" on her side), Both CRs are accepted
func (s *MessengerContactRequestSuite) TestBobSendsContactRequestAfterDecliningOneFromAlice() {
    messageTextAlice := "hello, Bobby!"

    alice := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to bob
    requestFromAlice := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageTextAlice,
    }
    s.sendContactRequest(requestFromAlice, alice)

    contactRequest := s.receiveContactRequest(messageTextAlice, bob)
    s.Require().NotNil(contactRequest)

    // Bob declines the contact request
    s.declineContactRequest(contactRequest, bob)

    messageTextBob := "hello, Alice!"

    aliceID := types.EncodeHex(crypto.FromECDSAPub(&alice.identity.PublicKey))

    // Bob sends a contact request to Alice
    requestFromBob := &requests.SendContactRequest{
        ID:      aliceID,
        Message: messageTextBob,
    }

    // Send contact request
    resp, err := bob.SendContactRequest(context.Background(), requestFromBob)
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check CR message, it should be accepted
    s.Require().Len(resp.Messages(), 2)

    contactRequest = s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequest)

    s.Require().Equal(common.ContactRequestStateAccepted, contactRequest.ContactRequestState)
    s.Require().Equal(requestFromBob.Message, contactRequest.Text)

    // Check pending notification
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(ActivityCenterNotificationTypeContactRequest, resp.ActivityCenterNotifications()[0].Type)
    s.Require().Equal(contactRequest.ID, resp.ActivityCenterNotifications()[0].Message.ID)
    s.Require().Equal(contactRequest.ContactRequestState, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Read, true)

    // Check contacts Bob's side
    s.Require().Len(resp.Contacts, 1)
    contact := resp.Contacts[0]
    s.Require().True(contact.mutual())
}

func (s *MessengerContactRequestSuite) TestBuildContact() {
    contactKey, err := crypto.GenerateKey()
    s.Require().NoError(err)
    contactID := types.EncodeHex(crypto.FromECDSAPub(&contactKey.PublicKey))

    contact, err := s.m.BuildContact(&requests.BuildContact{PublicKey: contactID})
    s.Require().NoError(err)

    s.Require().Equal(contact.EnsName, "")
    s.Require().False(contact.ENSVerified)

    contact, err = s.m.BuildContact(&requests.BuildContact{PublicKey: contactID, ENSName: "foobar"})
    s.Require().NoError(err)

    s.Require().Equal(contact.EnsName, "foobar")
    s.Require().True(contact.ENSVerified)
}

func (s *MessengerContactRequestSuite) TestReceiveAcceptAndRetractContactRequestOutOfOrder() {
    message := protobuf.ChatMessage{
        Clock:       4,
        Timestamp:   1,
        Text:        "some text",
        ChatId:      common.PubkeyToHex(&s.m.identity.PublicKey),
        MessageType: protobuf.MessageType_ONE_TO_ONE,
        ContentType: protobuf.ChatMessage_CONTACT_REQUEST,
    }

    contactKey, err := crypto.GenerateKey()
    s.Require().NoError(err)

    contact, err := BuildContactFromPublicKey(&contactKey.PublicKey)
    s.Require().NoError(err)

    state := s.m.buildMessageState()

    state.CurrentMessageState = &CurrentMessageState{
        PublicKey:        &contactKey.PublicKey,
        MessageID:        "0xa",
        StatusMessage:    &v1protocol.StatusMessage{TransportLayer: v1protocol.TransportLayer{Message: &types.Message{Timestamp: 1}}, ApplicationLayer: v1protocol.ApplicationLayer{ID: []byte("test-id")}},
        Contact:          contact,
        WhisperTimestamp: 1,
    }

    response := state.Response
    err = s.m.HandleChatMessage(state, &message, nil, false)
    s.Require().NoError(err)
    s.Require().Len(response.ActivityCenterNotifications(), 1)
    contacts := s.m.Contacts()
    s.Require().Len(contacts, 1)
    s.Require().Equal(ContactRequestStateReceived, contacts[0].ContactRequestRemoteState)

    retract := protobuf.RetractContactRequest{
        Clock: 2,
    }
    err = s.m.HandleRetractContactRequest(state, &retract, nil)
    s.Require().NoError(err)

    // Nothing should have changed
    contacts = s.m.Contacts()
    s.Require().Len(contacts, 1)
    s.Require().Equal(ContactRequestStateReceived, contacts[0].ContactRequestRemoteState)
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob receives CR from Alice
// 3) Bob resets his device
// 4) Bob restores Alice's contact from backup, CR is created
// 5) Bob succesefully accepts restored contact request
// 6) Alice get notified properly
func (s *MessengerContactRequestSuite) TestBobRestoresIncomingContactRequestFromSyncInstallationContactV2() {
    messageText := "hello, Bobby!"

    alice := s.m
    alice.account.CustomizationColor = multiaccountscommon.CustomizationColorBeige

    bob1 := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob1)

    aliceID := types.EncodeHex(crypto.FromECDSAPub(&alice.identity.PublicKey))
    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob1.identity.PublicKey))

    // Alice sends a contact request to bob
    requestFromAlice := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageText,
    }
    s.sendContactRequest(requestFromAlice, alice)

    // Bob receives CR from Alice
    contactRequest := s.receiveContactRequest(messageText, bob1)
    s.Require().NotNil(contactRequest)

    // Bob resets his device
    bob2, err := newMessengerWithKey(s.shh, bob1.identity, s.logger, nil)
    s.Require().NoError(err)
    defer TearDownMessenger(&s.Suite, bob2)

    // Get bob perspective of alice for backup
    aliceFromBob := bob1.Contacts()[0]
    s.Require().Equal(aliceFromBob.CustomizationColor, alice.account.GetCustomizationColor())
    state := bob2.buildMessageState()

    // Restore alice's contact from backup
    sync := s.syncInstallationContactV2FromContact(aliceFromBob)
    err = bob2.HandleSyncInstallationContactV2(state, &sync, nil)
    s.Require().NoError(err)

    // Accept latest CR for a contact
    resp, err := bob2.AcceptLatestContactRequestForContact(context.Background(), &requests.AcceptLatestContactRequestForContact{ID: types.Hex2Bytes(aliceID)})
    s.Require().NoError(err)
    s.Require().Len(resp.Contacts, 1)

    // Make sure the message is updated
    s.Require().NotNil(resp)
    s.Require().Len(resp.Messages(), 2)

    contactRequestMsg := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequestMsg)

    // NOTE: We don't restore CR message
    // s.Require().Equal(resp.Messages()[0].ID, contactRequest.ID)
    s.Require().Equal(common.ContactRequestStateAccepted, contactRequestMsg.ContactRequestState)

    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().True(resp.Contacts[0].mutual())

    // Make sure the sender is added to our contacts
    contacts := bob2.AddedContacts()
    s.Require().Len(contacts, 1)

    // Make sure we consider them a mutual contact, receiver side
    mutualContacts := bob2.MutualContacts()
    s.Require().Len(mutualContacts, 1)
}

// The scenario tested is as follow:
// 1) Alice sends a contact request to Bob
// 2) Bob receives CR from Alice
// 3) Alice resets her device
// 4) Alice restores Bob's contact from backup, CR is created
// 5) Bob accepts contact request
// 6) Alice get notified properly
func (s *MessengerContactRequestSuite) TestAliceRestoresOutgoingContactRequestFromSyncInstallationContactV2() {
    messageText := "hello, Bobby!"

    alice1 := s.m

    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)

    aliceID := types.EncodeHex(crypto.FromECDSAPub(&alice1.identity.PublicKey))
    bobID := types.EncodeHex(crypto.FromECDSAPub(&bob.identity.PublicKey))

    // Alice sends a contact request to bob
    requestFromAlice := &requests.SendContactRequest{
        ID:      bobID,
        Message: messageText,
    }
    s.sendContactRequest(requestFromAlice, alice1)

    // Bob receives CR from Alice
    contactRequest := s.receiveContactRequest(messageText, bob)
    s.Require().NotNil(contactRequest)

    // Bob resets his device
    alice2, err := newMessengerWithKey(s.shh, alice1.identity, s.logger, nil)
    s.Require().NoError(err)
    defer TearDownMessenger(&s.Suite, alice2)

    // Get bob perspective of alice for backup
    bobFromAlice := alice1.Contacts()[0]
    state := alice2.buildMessageState()

    // Restore alice's contact from backup
    sync := s.syncInstallationContactV2FromContact(bobFromAlice)
    err = alice2.HandleSyncInstallationContactV2(state, &sync, nil)
    s.Require().NoError(err)

    // Accept latest CR for a contact
    resp, err := bob.AcceptLatestContactRequestForContact(context.Background(), &requests.AcceptLatestContactRequestForContact{ID: types.Hex2Bytes(aliceID)})
    s.Require().NoError(err)

    // Make sure the message is updated
    s.Require().NotNil(resp)
    s.Require().Len(resp.Messages(), 2)

    contactRequestMsg := s.findFirstByContentType(resp.Messages(), protobuf.ChatMessage_CONTACT_REQUEST)
    s.Require().NotNil(contactRequestMsg)

    // NOTE: We don't restore CR message
    // s.Require().Equal(resp.Messages()[0].ID, contactRequest.ID)
    s.Require().Equal(common.ContactRequestStateAccepted, contactRequestMsg.ContactRequestState)

    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().NotNil(resp.ActivityCenterNotifications()[0].Message)
    s.Require().Equal(common.ContactRequestStateAccepted, resp.ActivityCenterNotifications()[0].Message.ContactRequestState)

    // Check the contact state is correctly set
    s.Require().Len(resp.Contacts, 1)
    s.Require().True(resp.Contacts[0].mutual())

    // Make sure the sender is added to our contacts
    contacts := bob.AddedContacts()
    s.Require().Len(contacts, 1)

    // Make sure we consider them a mutual contact, receiver side
    mutualContacts := bob.MutualContacts()
    s.Require().Len(mutualContacts, 1)
}

/*
Makes Alice and Bob mutual contacts.
Verifies that Alice device-2 receives mutual contact information.
Contact request is sent from Alice device 1.
*/
func (s *MessengerContactRequestSuite) makeMutualContactsAndSync(alice1 *Messenger, alice2 *Messenger, bob *Messenger, messageText string) {
    bobPublicKey := bob.IdentityPublicKeyString()

    cr := s.createContactRequest(bobPublicKey, messageText)
    s.sendContactRequest(cr, alice1)
    receivedCR := s.receiveContactRequest(cr.Message, bob)
    s.acceptContactRequest(receivedCR, alice1, bob)
    s.checkMutualContact(alice1, bobPublicKey)

    // Wait for Alice-2 to sync new contact
    resp, _ := WaitOnMessengerResponse(alice2, func(r *MessengerResponse) bool {
        // FIXME: https://github.com/status-im/status-go/issues/3803
        //           No condition here. There are randomly received 1-3 messages.
        return false // len(r.Contacts) == 1 && len(r.Messages()) == 3
    }, "alice-2 didn't receive bob contact")
    s.logResponse(resp, "Wait for Alice-2 to sync new contact")
    s.Require().NotNil(resp)
    //s.Require().NoError(err)    // WARNING: Uncomment when bug fixed. https://github.com/status-im/status-go/issues/3803

    // Check that Alice-2 has Bob as a contact
    s.Require().Len(alice2.Contacts(), 1)
    s.Require().Equal(bobPublicKey, alice2.Contacts()[0].ID)

    // TODO: https://github.com/status-im/status-go/issues/3803
    //          Check response messages and AC notifications when
}

func (s *MessengerContactRequestSuite) blockContactAndSync(alice1 *Messenger, alice2 *Messenger, bob *Messenger) {
    bobPublicKey := bob.IdentityPublicKeyString()
    bobDisplayName, err := bob.settings.DisplayName()
    s.Require().NoError(err)

    // Alice-1 blocks Bob
    _, err = alice1.BlockContact(context.Background(), bobPublicKey, false)
    s.Require().NoError(err)
    s.Require().Len(alice1.BlockedContacts(), 1)
    s.Require().Equal(bobPublicKey, alice1.BlockedContacts()[0].ID)

    // Wait for Bob to receive message that he was removed as contact
    resp, err := WaitOnMessengerResponse(bob, func(r *MessengerResponse) bool {
        return len(r.Contacts) == 1 && len(r.Messages()) == 1
    }, "Bob didn't receive a message that he was removed as contact")

    s.Require().NoError(err)
    s.Require().NotNil(resp)
    s.logResponse(resp, "Wait for Bob to receive message that he was removed as contact")

    // Check response contacts
    s.Require().Len(resp.Contacts, 1)
    respContact := resp.Contacts[0]
    s.Require().Equal(respContact.ID, alice1.IdentityPublicKeyString())
    s.Require().Equal(ContactRequestStateNone, respContact.ContactRequestLocalState)
    s.Require().Equal(ContactRequestStateNone, respContact.ContactRequestRemoteState)

    // Check response messages
    s.Require().Len(resp.Messages(), 1)
    s.Require().Equal(resp.Messages()[0].Text, fmt.Sprintf(incomingMutualStateEventRemovedDefaultText, alice1.IdentityPublicKeyString()))

    // Check response AC notifications
    s.Require().Len(resp.ActivityCenterNotifications(), 1)
    s.Require().Equal(resp.ActivityCenterNotifications()[0].Type, ActivityCenterNotificationTypeContactRemoved)

    alice2.logger.Info("STARTING")
    // Wait for Alice-2 to sync Bob blocked state
    resp, err = WaitOnMessengerResponse(alice2, func(r *MessengerResponse) bool {
        return len(r.Contacts) == 1
    }, "Alice-2 didn't receive blocking bob")
    s.logResponse(resp, "Wait for Alice-2 to sync Bob blocked state")
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check that Bob contact is synced with correct display name and blocked
    s.Require().Len(alice2.Contacts(), 1)
    respContact = alice2.Contacts()[0]
    s.Require().True(respContact.Blocked)
    s.Require().True(respContact.Removed)
    s.Require().Equal(bobPublicKey, respContact.ID)
    s.Require().Equal(bobDisplayName, respContact.DisplayName)
    s.Require().Equal(ContactRequestStateDismissed, respContact.ContactRequestLocalState)
    s.Require().Equal(ContactRequestStateReceived, respContact.ContactRequestRemoteState)

    // Check chats list
    s.Require().Len(alice2.Chats(), deprecation.AddChatsCount(2))
}

func (s *MessengerContactRequestSuite) unblockContactAndSync(alice1 *Messenger, alice2 *Messenger, bob *Messenger) {
    bobPublicKey := bob.IdentityPublicKeyString()

    _, err := alice1.UnblockContact(bobPublicKey)
    s.Require().NoError(err)
    s.Require().Len(alice1.BlockedContacts(), 0)

    // Bob doesn't receive any message on blocking.
    // No response wait here.

    // Wait for Alice-2 to receive Bob unblocked state
    resp, err := WaitOnMessengerResponse(alice2, func(r *MessengerResponse) bool {
        return len(r.Contacts) == 1
    }, "Alice-2 didn't receive Bob unblocked state")
    s.logResponse(resp, "Wait for Alice-2 to receive Bob unblocked state")
    s.Require().NoError(err)
    s.Require().NotNil(resp)

    // Check that Alice-2 has Bob unblocked and removed
    s.Require().Len(alice2.Contacts(), 1)
    respContact := alice2.Contacts()[0]
    s.Require().Equal(bobPublicKey, respContact.ID)
    s.Require().False(respContact.Blocked)
    s.Require().True(respContact.Removed)
    s.Require().Equal(respContact.ContactRequestLocalState, ContactRequestStateNone)
    s.Require().Equal(respContact.ContactRequestRemoteState, ContactRequestStateNone)

    // Check chats list
    s.Require().Len(alice2.Chats(), deprecation.AddChatsCount(2))
}

func (s *MessengerContactRequestSuite) TestBlockedContactSyncing() {
    // Setup Bob
    bob := s.newMessenger()
    defer TearDownMessenger(&s.Suite, bob)
    _ = bob.SetDisplayName("bob-1")
    s.logger.Info("Bob account set up", zap.String("publicKey", bob.IdentityPublicKeyString()))

    // Setup Alice-1
    alice1 := s.m
    s.logger.Info("Alice account set up", zap.String("publicKey", alice1.IdentityPublicKeyString()))

    // Setup Alice-2
    alice2, err := newMessengerWithKey(s.shh, s.m.identity, s.logger, nil)
    s.Require().NoError(err)
    defer TearDownMessenger(&s.Suite, alice2)

    // Pair alice-1 <-> alice-2
    // NOTE: This doesn't include initial data sync. Local pairing could be used.
    s.logger.Info("pairing Alice-1 and Alice-2")
    prepAliceMessengersForPairing(&s.Suite, alice1, alice2)
    PairDevices(&s.Suite, alice1, alice2)
    PairDevices(&s.Suite, alice2, alice1)
    s.logger.Info("pairing Alice-1 and Alice-2 finished")

    // Loop cr-block-unblock. Some bugs happen at second iteration.
    for i := 0; i < 2; i++ {
        crText := fmt.Sprintf("hello-%d", i)
        s.makeMutualContactsAndSync(alice1, alice2, bob, crText)
        s.blockContactAndSync(alice1, alice2, bob)
        s.unblockContactAndSync(alice1, alice2, bob)
    }
}