status-go/services/chat/api.go

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package chat
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import (
"context"
"errors"
"strings"
"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/status-im/status-go/eth-node/crypto"
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"github.com/status-im/status-go/eth-node/types"
"github.com/status-im/status-go/images"
"github.com/status-im/status-go/protocol"
"github.com/status-im/status-go/protocol/common"
"github.com/status-im/status-go/protocol/communities"
"github.com/status-im/status-go/protocol/protobuf"
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"github.com/status-im/status-go/protocol/requests"
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v1protocol "github.com/status-im/status-go/protocol/v1"
)
var (
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ErrChatNotFound = errors.New("can't find chat")
ErrCommunitiesNotSupported = errors.New("communities are not supported")
ErrChatTypeNotSupported = errors.New("chat type not supported")
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)
type ChannelGroupType string
const Personal ChannelGroupType = "personal"
const Community ChannelGroupType = "community"
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type PinnedMessages struct {
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Cursor string
PinnedMessages []*common.PinnedMessage
}
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type Member struct {
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// Community Roles
Roles []protobuf.CommunityMember_Roles `json:"roles,omitempty"`
// Admin indicates if the member is an admin of the group chat
Admin bool `json:"admin"`
// Joined indicates if the member has joined the group chat
Joined bool `json:"joined"`
}
type Chat struct {
ID string `json:"id"`
Name string `json:"name"`
Description string `json:"description"`
Color string `json:"color"`
Emoji string `json:"emoji"`
Active bool `json:"active"`
ChatType protocol.ChatType `json:"chatType"`
Timestamp int64 `json:"timestamp"`
LastClockValue uint64 `json:"lastClockValue"`
DeletedAtClockValue uint64 `json:"deletedAtClockValue"`
ReadMessagesAtClockValue uint64 `json:"readMessagesAtClockValue"`
UnviewedMessagesCount uint `json:"unviewedMessagesCount"`
UnviewedMentionsCount uint `json:"unviewedMentionsCount"`
LastMessage *common.Message `json:"lastMessage"`
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Members map[string]Member `json:"members,omitempty"`
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MembershipUpdates []v1protocol.MembershipUpdateEvent `json:"membershipUpdateEvents"`
Alias string `json:"alias,omitempty"`
Identicon string `json:"identicon"`
Muted bool `json:"muted"`
InvitationAdmin string `json:"invitationAdmin,omitempty"`
ReceivedInvitationAdmin string `json:"receivedInvitationAdmin,omitempty"`
Profile string `json:"profile,omitempty"`
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CommunityID string `json:"communityId"`
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CategoryID string `json:"categoryId"`
Position int32 `json:"position,omitempty"`
Permissions *protobuf.CommunityPermissions `json:"permissions,omitempty"`
Joined int64 `json:"joined,omitempty"`
SyncedTo uint32 `json:"syncedTo,omitempty"`
SyncedFrom uint32 `json:"syncedFrom,omitempty"`
Highlight bool `json:"highlight,omitempty"`
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PinnedMessages *PinnedMessages `json:"pinnedMessages,omitempty"`
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CanPost bool `json:"canPost"`
}
type ChannelGroup struct {
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Type ChannelGroupType `json:"channelGroupType"`
Name string `json:"name"`
Images map[string]images.IdentityImage `json:"images"`
Color string `json:"color"`
Chats map[string]*Chat `json:"chats"`
Categories map[string]communities.CommunityCategory `json:"categories"`
EnsName string `json:"ensName"`
Admin bool `json:"admin"`
Verified bool `json:"verified"`
Description string `json:"description"`
IntroMessage string `json:"introMessage"`
OutroMessage string `json:"outroMessage"`
Tags []communities.CommunityTag `json:"tags"`
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Permissions *protobuf.CommunityPermissions `json:"permissions"`
Members map[string]*protobuf.CommunityMember `json:"members"`
CanManageUsers bool `json:"canManageUsers"`
Muted bool `json:"muted"`
BanList []string `json:"banList"`
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}
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func NewAPI(service *Service) *API {
return &API{
s: service,
}
}
type API struct {
s *Service
}
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func (api *API) GetChats(ctx context.Context) (map[string]ChannelGroup, error) {
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joinedCommunities, err := api.s.messenger.JoinedCommunities()
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if err != nil {
return nil, err
}
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channels := api.s.messenger.Chats()
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pubKey := types.EncodeHex(crypto.FromECDSAPub(api.s.messenger.IdentityPublicKey()))
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result := make(map[string]ChannelGroup)
result[pubKey] = ChannelGroup{
Type: Personal,
Name: "",
Images: make(map[string]images.IdentityImage),
Color: "",
Chats: make(map[string]*Chat),
Categories: make(map[string]communities.CommunityCategory),
EnsName: "", // Not implemented yet in communities
Admin: true,
Verified: true,
Description: "",
IntroMessage: "",
OutroMessage: "",
Tags: []communities.CommunityTag{},
Permissions: &protobuf.CommunityPermissions{},
Muted: false,
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}
for _, chat := range channels {
if !chat.Active || (!chat.OneToOne() && !chat.PrivateGroupChat() && !chat.Public()) || chat.CommunityID != "" {
continue
}
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c, err := api.toAPIChat(chat, nil, pubKey)
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if err != nil {
return nil, err
}
result[pubKey].Chats[chat.ID] = c
}
for _, community := range joinedCommunities {
chGrp := ChannelGroup{
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Type: Community,
Name: community.Name(),
Color: community.Color(),
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Images: make(map[string]images.IdentityImage),
Chats: make(map[string]*Chat),
Categories: make(map[string]communities.CommunityCategory),
Admin: community.IsAdmin(),
Verified: community.Verified(),
Description: community.DescriptionText(),
IntroMessage: community.IntroMessage(),
OutroMessage: community.OutroMessage(),
Tags: community.Tags(),
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Permissions: community.Description().Permissions,
Members: community.Description().Members,
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CanManageUsers: community.CanManageUsers(community.MemberIdentity()),
Muted: community.Muted(),
BanList: community.Description().BanList,
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}
for t, i := range community.Images() {
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chGrp.Images[t] = images.IdentityImage{Name: t, Payload: i.Payload}
}
for _, cat := range community.Categories() {
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chGrp.Categories[cat.CategoryId] = communities.CommunityCategory{
ID: cat.CategoryId,
Name: cat.Name,
Position: int(cat.Position),
}
}
for _, chat := range channels {
if chat.CommunityID == community.IDString() && chat.Active {
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c, err := api.toAPIChat(chat, community, pubKey)
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if err != nil {
return nil, err
}
chGrp.Chats[c.ID] = c
}
}
result[community.IDString()] = chGrp
}
return result, nil
}
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func (api *API) GetChat(ctx context.Context, communityID types.HexBytes, chatID string) (*Chat, error) {
pubKey := types.EncodeHex(crypto.FromECDSAPub(api.s.messenger.IdentityPublicKey()))
messengerChat, community, err := api.getChatAndCommunity(pubKey, communityID, chatID)
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if err != nil {
return nil, err
}
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result, err := api.toAPIChat(messengerChat, community, pubKey)
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if err != nil {
return nil, err
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}
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return result, nil
}
func (api *API) GetMembers(ctx context.Context, communityID types.HexBytes, chatID string) (map[string]Member, error) {
pubKey := types.EncodeHex(crypto.FromECDSAPub(api.s.messenger.IdentityPublicKey()))
messengerChat, community, err := api.getChatAndCommunity(pubKey, communityID, chatID)
if err != nil {
return nil, err
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}
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return getChatMembers(messengerChat, community, pubKey)
}
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func (api *API) JoinChat(ctx context.Context, communityID types.HexBytes, chatID string) (*Chat, error) {
if len(communityID) != 0 {
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return nil, ErrCommunitiesNotSupported
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}
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response, err := api.s.messenger.CreatePublicChat(&requests.CreatePublicChat{ID: chatID})
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if err != nil {
return nil, err
}
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pubKey := types.EncodeHex(crypto.FromECDSAPub(api.s.messenger.IdentityPublicKey()))
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return api.toAPIChat(response.Chats()[0], nil, pubKey)
}
func (api *API) toAPIChat(protocolChat *protocol.Chat, community *communities.Community, pubKey string) (*Chat, error) {
pinnedMessages, cursor, err := api.s.messenger.PinnedMessageByChatID(protocolChat.ID, "", -1)
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if err != nil {
return nil, err
}
chat := &Chat{
ID: strings.TrimPrefix(protocolChat.ID, protocolChat.CommunityID),
Name: protocolChat.Name,
Description: protocolChat.Description,
Color: protocolChat.Color,
Emoji: protocolChat.Emoji,
Active: protocolChat.Active,
ChatType: protocolChat.ChatType,
Timestamp: protocolChat.Timestamp,
LastClockValue: protocolChat.LastClockValue,
DeletedAtClockValue: protocolChat.DeletedAtClockValue,
ReadMessagesAtClockValue: protocolChat.ReadMessagesAtClockValue,
UnviewedMessagesCount: protocolChat.UnviewedMessagesCount,
UnviewedMentionsCount: protocolChat.UnviewedMentionsCount,
LastMessage: protocolChat.LastMessage,
MembershipUpdates: protocolChat.MembershipUpdates,
Alias: protocolChat.Alias,
Identicon: protocolChat.Identicon,
Muted: protocolChat.Muted,
InvitationAdmin: protocolChat.InvitationAdmin,
ReceivedInvitationAdmin: protocolChat.ReceivedInvitationAdmin,
Profile: protocolChat.Profile,
CommunityID: protocolChat.CommunityID,
CategoryID: protocolChat.CategoryID,
Joined: protocolChat.Joined,
SyncedTo: protocolChat.SyncedTo,
SyncedFrom: protocolChat.SyncedFrom,
Highlight: protocolChat.Highlight,
}
if protocolChat.OneToOne() {
chat.Name = "" // Emptying since it contains non useful data
}
if len(pinnedMessages) != 0 {
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chat.PinnedMessages = &PinnedMessages{
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Cursor: cursor,
PinnedMessages: pinnedMessages,
}
}
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err = chat.populateCommunityFields(community)
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if err != nil {
return nil, err
}
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chatMembers, err := getChatMembers(protocolChat, community, pubKey)
if err != nil {
return nil, err
}
chat.Members = chatMembers
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return chat, nil
}
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func getChatMembers(sourceChat *protocol.Chat, community *communities.Community, userPubKey string) (map[string]Member, error) {
result := make(map[string]Member)
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if sourceChat.ChatType == protocol.ChatTypePrivateGroupChat && len(sourceChat.Members) > 0 {
for _, m := range sourceChat.Members {
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result[m.ID] = Member{
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Admin: m.Admin,
Joined: true,
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}
}
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return result, nil
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}
if sourceChat.ChatType == protocol.ChatTypeOneToOne {
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result[sourceChat.ID] = Member{
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Joined: true,
}
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result[userPubKey] = Member{
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Joined: true,
}
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return result, nil
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}
if community != nil {
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for member, m := range community.Description().Members {
pubKey, err := common.HexToPubkey(member)
if err != nil {
return nil, err
}
result[member] = Member{
Roles: m.Roles,
Joined: community.Joined(),
Admin: community.IsMemberAdmin(pubKey),
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}
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}
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return result, nil
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}
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return nil, nil
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}
func (chat *Chat) populateCommunityFields(community *communities.Community) error {
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if community == nil {
return nil
}
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commChat, exists := community.Chats()[chat.ID]
if !exists {
// Skip unknown community chats. They might be channels that were deleted
return nil
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}
canPost, err := community.CanMemberIdentityPost(chat.ID)
if err != nil {
return err
}
chat.CategoryID = commChat.CategoryId
chat.Position = commChat.Position
chat.Permissions = commChat.Permissions
chat.Emoji = commChat.Identity.Emoji
chat.Name = commChat.Identity.DisplayName
chat.Description = commChat.Identity.Description
chat.CanPost = canPost
return nil
}
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func (api *API) getChatAndCommunity(pubKey string, communityID types.HexBytes, chatID string) (*protocol.Chat, *communities.Community, error) {
fullChatID := chatID
if string(communityID.Bytes()) == pubKey { // Obtaining chats from personal
communityID = []byte{}
}
if len(communityID) != 0 {
fullChatID = string(communityID.Bytes()) + chatID
}
messengerChat := api.s.messenger.Chat(fullChatID)
if messengerChat == nil {
return nil, nil, ErrChatNotFound
}
var community *communities.Community
if messengerChat.CommunityID != "" {
communityID, err := hexutil.Decode(messengerChat.CommunityID)
if err != nil {
return nil, nil, err
}
community, err = api.s.messenger.GetCommunityByID(communityID)
if err != nil {
return nil, nil, err
}
}
return messengerChat, community, nil
}
func (api *API) EditChat(ctx context.Context, communityID types.HexBytes, chatID string, name string, color string, image string) (*Chat, error) {
if len(communityID) != 0 {
return nil, ErrCommunitiesNotSupported
}
chatToEdit := api.s.messenger.Chat(chatID)
if chatToEdit == nil {
return nil, ErrChatNotFound
}
if chatToEdit.ChatType != protocol.ChatTypePrivateGroupChat {
return nil, ErrChatTypeNotSupported
}
response, err := api.s.messenger.EditGroupChat(ctx, chatID, name, color, image)
if err != nil {
return nil, err
}
pubKey := types.EncodeHex(crypto.FromECDSAPub(api.s.messenger.IdentityPublicKey()))
return api.toAPIChat(response.Chats()[0], nil, pubKey)
}