status-go/protocol/communities/manager.go

package communities

import (
	"context"
	"crypto/ecdsa"
	"database/sql"
	"fmt"
	"io/ioutil"
	"math"
	"math/big"
	"net"
	"os"
	"sort"
	"strconv"
	"strings"
	"sync"
	"time"

	"github.com/anacrolix/torrent"
	"github.com/anacrolix/torrent/bencode"
	"github.com/anacrolix/torrent/metainfo"
	"github.com/golang/protobuf/proto"

	"github.com/google/uuid"
	"github.com/pkg/errors"
	"go.uber.org/zap"

	gethcommon "github.com/ethereum/go-ethereum/common"
	"github.com/status-im/status-go/account"
	"github.com/status-im/status-go/eth-node/crypto"
	"github.com/status-im/status-go/eth-node/types"
	"github.com/status-im/status-go/images"
	"github.com/status-im/status-go/params"
	"github.com/status-im/status-go/protocol/common"
	"github.com/status-im/status-go/protocol/encryption"
	"github.com/status-im/status-go/protocol/ens"
	"github.com/status-im/status-go/protocol/protobuf"
	"github.com/status-im/status-go/protocol/requests"
	"github.com/status-im/status-go/protocol/transport"
	"github.com/status-im/status-go/services/wallet/token"
	"github.com/status-im/status-go/signal"
)

var defaultAnnounceList = [][]string{
	{"udp://tracker.opentrackr.org:1337/announce"},
	{"udp://tracker.openbittorrent.com:6969/announce"},
}
var pieceLength = 100 * 1024

const maxArchiveSizeInBytes = 30000000

var memberPermissionsCheckInterval = 1 * time.Hour

// errors
var (
	ErrTorrentTimedout                 = errors.New("torrent has timed out")
	ErrCommunityRequestAlreadyRejected = errors.New("that user was already rejected from the community")
)

type Manager struct {
	persistence                    *Persistence
	encryptor                      *encryption.Protocol
	ensSubscription                chan []*ens.VerificationRecord
	subscriptions                  []chan *Subscription
	ensVerifier                    *ens.Verifier
	identity                       *ecdsa.PrivateKey
	accountsManager                *account.GethManager
	tokenManager                   *token.Manager
	logger                         *zap.Logger
	stdoutLogger                   *zap.Logger
	transport                      *transport.Transport
	quit                           chan struct{}
	torrentConfig                  *params.TorrentConfig
	torrentClient                  *torrent.Client
	historyArchiveTasksWaitGroup   sync.WaitGroup
	historyArchiveTasks            map[string]chan struct{}
	periodicMemberPermissionsTasks map[string]chan struct{}
	torrentTasks                   map[string]metainfo.Hash
	historyArchiveDownloadTasks    map[string]*HistoryArchiveDownloadTask
}

type HistoryArchiveDownloadTask struct {
	CancelChan chan struct{}
	Waiter     sync.WaitGroup
	m          sync.RWMutex
	Cancelled  bool
}

func (t *HistoryArchiveDownloadTask) IsCancelled() bool {
	t.m.RLock()
	defer t.m.RUnlock()
	return t.Cancelled
}

func (t *HistoryArchiveDownloadTask) Cancel() {
	t.m.Lock()
	defer t.m.Unlock()
	t.Cancelled = true
	close(t.CancelChan)
}

type managerOptions struct {
	accountsManager *account.GethManager
	tokenManager    *token.Manager
}

type ManagerOption func(*managerOptions)

func WithAccountManager(accountsManager *account.GethManager) ManagerOption {
	return func(opts *managerOptions) {
		opts.accountsManager = accountsManager
	}
}

func WithTokenManager(tokenManager *token.Manager) ManagerOption {
	return func(opts *managerOptions) {
		opts.tokenManager = tokenManager
	}
}

func NewManager(identity *ecdsa.PrivateKey, db *sql.DB, encryptor *encryption.Protocol, logger *zap.Logger, verifier *ens.Verifier, transport *transport.Transport, torrentConfig *params.TorrentConfig, opts ...ManagerOption) (*Manager, error) {
	if identity == nil {
		return nil, errors.New("empty identity")
	}

	var err error
	if logger == nil {
		if logger, err = zap.NewDevelopment(); err != nil {
			return nil, errors.Wrap(err, "failed to create a logger")
		}
	}

	stdoutLogger, err := zap.NewDevelopment()
	if err != nil {
		return nil, errors.Wrap(err, "failed to create archive logger")
	}

	managerConfig := managerOptions{}
	for _, opt := range opts {
		opt(&managerConfig)
	}

	manager := &Manager{
		logger:                         logger,
		stdoutLogger:                   stdoutLogger,
		encryptor:                      encryptor,
		identity:                       identity,
		quit:                           make(chan struct{}),
		transport:                      transport,
		torrentConfig:                  torrentConfig,
		historyArchiveTasks:            make(map[string]chan struct{}),
		periodicMemberPermissionsTasks: make(map[string]chan struct{}),
		torrentTasks:                   make(map[string]metainfo.Hash),
		historyArchiveDownloadTasks:    make(map[string]*HistoryArchiveDownloadTask),
		persistence: &Persistence{
			logger: logger,
			db:     db,
		},
	}

	if managerConfig.accountsManager != nil {
		manager.accountsManager = managerConfig.accountsManager
	}

	if managerConfig.tokenManager != nil {
		manager.tokenManager = managerConfig.tokenManager
	}

	if verifier != nil {

		sub := verifier.Subscribe()
		manager.ensSubscription = sub
		manager.ensVerifier = verifier
	}

	return manager, nil
}

func (m *Manager) LogStdout(msg string, fields ...zap.Field) {
	m.stdoutLogger.Info(msg, fields...)
	m.logger.Debug(msg, fields...)
}

type archiveMDSlice []*archiveMetadata

type archiveMetadata struct {
	hash string
	from uint64
}

func (md archiveMDSlice) Len() int {
	return len(md)
}

func (md archiveMDSlice) Swap(i, j int) {
	md[i], md[j] = md[j], md[i]
}

func (md archiveMDSlice) Less(i, j int) bool {
	return md[i].from > md[j].from
}

type Subscription struct {
	Community                                *Community
	Invitations                              []*protobuf.CommunityInvitation
	CreatingHistoryArchivesSignal            *signal.CreatingHistoryArchivesSignal
	HistoryArchivesCreatedSignal             *signal.HistoryArchivesCreatedSignal
	NoHistoryArchivesCreatedSignal           *signal.NoHistoryArchivesCreatedSignal
	HistoryArchivesSeedingSignal             *signal.HistoryArchivesSeedingSignal
	HistoryArchivesUnseededSignal            *signal.HistoryArchivesUnseededSignal
	HistoryArchiveDownloadedSignal           *signal.HistoryArchiveDownloadedSignal
	DownloadingHistoryArchivesStartedSignal  *signal.DownloadingHistoryArchivesStartedSignal
	DownloadingHistoryArchivesFinishedSignal *signal.DownloadingHistoryArchivesFinishedSignal
	ImportingHistoryArchiveMessagesSignal    *signal.ImportingHistoryArchiveMessagesSignal
}

type CommunityResponse struct {
	Community *Community        `json:"community"`
	Changes   *CommunityChanges `json:"changes"`
}

func (m *Manager) Subscribe() chan *Subscription {
	subscription := make(chan *Subscription, 100)
	m.subscriptions = append(m.subscriptions, subscription)
	return subscription
}

func (m *Manager) Start() error {
	if m.ensVerifier != nil {
		m.runENSVerificationLoop()
	}

	if m.torrentConfig != nil && m.torrentConfig.Enabled {
		err := m.StartTorrentClient()
		if err != nil {
			m.LogStdout("couldn't start torrent client", zap.Error(err))
		}
	}

	return nil
}

func (m *Manager) runENSVerificationLoop() {
	go func() {
		for {
			select {
			case <-m.quit:
				m.logger.Debug("quitting ens verification loop")
				return
			case records, more := <-m.ensSubscription:
				if !more {
					m.logger.Debug("no more ens records, quitting")
					return
				}
				m.logger.Info("received records", zap.Any("records", records))

			}
		}
	}()
}

func (m *Manager) Stop() error {
	close(m.quit)
	for _, c := range m.subscriptions {
		close(c)
	}
	m.StopTorrentClient()
	return nil
}

func (m *Manager) SetTorrentConfig(config *params.TorrentConfig) {
	m.torrentConfig = config
}

// getTCPandUDPport will return the same port number given if != 0,
// otherwise, it will attempt to find a free random tcp and udp port using
// the same number for both protocols
func (m *Manager) getTCPandUDPport(portNumber int) (int, error) {
	if portNumber != 0 {
		return portNumber, nil
	}

	// Find free port
	for i := 0; i < 10; i++ {
		tcpAddr, err := net.ResolveTCPAddr("tcp", net.JoinHostPort("localhost", "0"))
		if err != nil {
			m.logger.Warn("unable to resolve tcp addr: %v", zap.Error(err))
			continue
		}

		tcpListener, err := net.ListenTCP("tcp", tcpAddr)
		if err != nil {
			tcpListener.Close()
			m.logger.Warn("unable to listen on addr", zap.Stringer("addr", tcpAddr), zap.Error(err))
			continue
		}

		port := tcpListener.Addr().(*net.TCPAddr).Port
		tcpListener.Close()

		udpAddr, err := net.ResolveUDPAddr("udp", net.JoinHostPort("localhost", fmt.Sprintf("%d", port)))
		if err != nil {
			m.logger.Warn("unable to resolve udp addr: %v", zap.Error(err))
			continue
		}

		udpListener, err := net.ListenUDP("udp", udpAddr)
		if err != nil {
			udpListener.Close()
			m.logger.Warn("unable to listen on addr", zap.Stringer("addr", udpAddr), zap.Error(err))
			continue
		}

		udpListener.Close()

		return port, nil
	}

	return 0, fmt.Errorf("no free port found")
}

func (m *Manager) StartTorrentClient() error {
	if m.torrentConfig == nil {
		return fmt.Errorf("can't start torrent client: missing torrentConfig")
	}

	if m.TorrentClientStarted() {
		return nil
	}

	port, err := m.getTCPandUDPport(m.torrentConfig.Port)
	if err != nil {
		return err
	}

	config := torrent.NewDefaultClientConfig()
	config.SetListenAddr(":" + fmt.Sprint(port))
	config.Seed = true

	config.DataDir = m.torrentConfig.DataDir

	if _, err := os.Stat(m.torrentConfig.DataDir); os.IsNotExist(err) {
		err := os.MkdirAll(m.torrentConfig.DataDir, 0700)
		if err != nil {
			return err
		}
	}

	m.logger.Info("Starting torrent client", zap.Any("port", port))
	// Instantiating the client will make it bootstrap and listen eagerly,
	// so no go routine is needed here
	client, err := torrent.NewClient(config)
	if err != nil {
		return err
	}
	m.torrentClient = client
	return nil
}

func (m *Manager) StopTorrentClient() []error {
	if m.TorrentClientStarted() {
		m.StopHistoryArchiveTasksIntervals()
		m.logger.Info("Stopping torrent client")
		errs := m.torrentClient.Close()
		if len(errs) > 0 {
			return errs
		}
		m.torrentClient = nil
	}
	return make([]error, 0)
}

func (m *Manager) TorrentClientStarted() bool {
	return m.torrentClient != nil
}

func (m *Manager) publish(subscription *Subscription) {
	for _, s := range m.subscriptions {
		select {
		case s <- subscription:
		default:
			m.logger.Warn("subscription channel full, dropping message")
		}
	}
}

func (m *Manager) All() ([]*Community, error) {
	return m.persistence.AllCommunities(&m.identity.PublicKey)
}

type KnownCommunitiesResponse struct {
	ContractCommunities []string              `json:"contractCommunities"`
	Descriptions        map[string]*Community `json:"communities"`
	UnknownCommunities  []string              `json:"unknownCommunities"`
}

func (m *Manager) GetStoredDescriptionForCommunities(communityIDs []types.HexBytes) (response *KnownCommunitiesResponse, err error) {
	response = &KnownCommunitiesResponse{
		Descriptions: make(map[string]*Community),
	}

	for i := range communityIDs {
		communityID := communityIDs[i].String()
		var community *Community
		community, err = m.GetByID(communityIDs[i])
		if err != nil {
			return
		}

		response.ContractCommunities = append(response.ContractCommunities, communityID)

		if community != nil {
			response.Descriptions[community.IDString()] = community
		} else {
			response.UnknownCommunities = append(response.UnknownCommunities, communityID)
		}
	}

	return
}

func (m *Manager) Joined() ([]*Community, error) {
	return m.persistence.JoinedCommunities(&m.identity.PublicKey)
}

func (m *Manager) Spectated() ([]*Community, error) {
	return m.persistence.SpectatedCommunities(&m.identity.PublicKey)
}

func (m *Manager) JoinedAndPendingCommunitiesWithRequests() ([]*Community, error) {
	return m.persistence.JoinedAndPendingCommunitiesWithRequests(&m.identity.PublicKey)
}

func (m *Manager) DeletedCommunities() ([]*Community, error) {
	return m.persistence.DeletedCommunities(&m.identity.PublicKey)
}

func (m *Manager) Created() ([]*Community, error) {
	return m.persistence.CreatedCommunities(&m.identity.PublicKey)
}

// CreateCommunity takes a description, generates an ID for it, saves it and return it
func (m *Manager) CreateCommunity(request *requests.CreateCommunity, publish bool) (*Community, error) {

	description, err := request.ToCommunityDescription()
	if err != nil {
		return nil, err
	}

	description.Members = make(map[string]*protobuf.CommunityMember)
	description.Members[common.PubkeyToHex(&m.identity.PublicKey)] = &protobuf.CommunityMember{Roles: []protobuf.CommunityMember_Roles{protobuf.CommunityMember_ROLE_ALL}}

	err = ValidateCommunityDescription(description)
	if err != nil {
		return nil, err
	}

	description.Clock = 1

	key, err := crypto.GenerateKey()
	if err != nil {
		return nil, err
	}

	config := Config{
		ID:                   &key.PublicKey,
		PrivateKey:           key,
		Logger:               m.logger,
		Joined:               true,
		MemberIdentity:       &m.identity.PublicKey,
		CommunityDescription: description,
	}
	community, err := New(config)
	if err != nil {
		return nil, err
	}

	// We join any community we create
	community.Join()

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	if publish {
		m.publish(&Subscription{Community: community})
	}

	return community, nil
}

func (m *Manager) CreateCommunityTokenPermission(request *requests.CreateCommunityTokenPermission) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	tokenPermission := request.ToCommunityTokenPermission()
	tokenPermission.Id = uuid.New().String()

	changes, err := community.AddTokenPermission(&tokenPermission)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	m.publish(&Subscription{Community: community})

	// check existing member permission once, then check periodically
	err = m.checkMemberPermissions(community.ID())
	if err != nil {
		return nil, nil, err
	}
	go m.CheckMemberPermissionsPeriodically(community.ID())

	return community, changes, nil
}

func (m *Manager) EditCommunityTokenPermission(request *requests.EditCommunityTokenPermission) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	tokenPermission := request.ToCommunityTokenPermission()

	changes, err := community.UpdateTokenPermission(tokenPermission.Id, &tokenPermission)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	m.publish(&Subscription{Community: community})

	// check if members still fulfill the token criteria of all
	// BECOME_MEMBER permissions and kick them if necessary
	//
	// We do this in a separate routine to not block
	// this function
	if tokenPermission.Type == protobuf.CommunityTokenPermission_BECOME_MEMBER {
		go func() {
			err := m.checkMemberPermissions(community.ID())
			if err != nil {
				m.logger.Debug("failed to check member permissions", zap.Error(err))
			}
		}()
	}

	return community, changes, nil
}

func (m *Manager) checkMemberPermissions(communityID types.HexBytes) error {
	community, err := m.GetByID(communityID)
	if err != nil {
		return err
	}
	becomeMemberPermissions := community.TokenPermissionsByType(protobuf.CommunityTokenPermission_BECOME_MEMBER)

	if len(becomeMemberPermissions) > 0 {
		for memberKey, member := range community.Members() {
			if memberKey == common.PubkeyToHex(&m.identity.PublicKey) {
				continue
			}

			walletAddresses := make([]gethcommon.Address, 0)
			for _, walletAddress := range member.WalletAccounts {
				walletAddresses = append(walletAddresses, gethcommon.HexToAddress(walletAddress))
			}

			hasPermission, err := m.checkPermissionToJoin(becomeMemberPermissions, walletAddresses)
			if err != nil {
				return err
			}

			if !hasPermission {
				pk, err := common.HexToPubkey(memberKey)
				if err != nil {
					return err
				}
				_, err = community.RemoveUserFromOrg(pk)
				if err != nil {
					return err
				}
			}
		}
	}
	m.publish(&Subscription{Community: community})
	return nil
}

func (m *Manager) CheckMemberPermissionsPeriodically(communityID types.HexBytes) {

	if _, exists := m.periodicMemberPermissionsTasks[communityID.String()]; exists {
		return
	}

	cancel := make(chan struct{})
	m.periodicMemberPermissionsTasks[communityID.String()] = cancel

	ticker := time.NewTicker(memberPermissionsCheckInterval)
	defer ticker.Stop()

	for {
		select {
		case <-ticker.C:
			err := m.checkMemberPermissions(communityID)
			if err != nil {
				m.logger.Debug("failed to check member permissions", zap.Error(err))
			}
		case <-cancel:
			delete(m.periodicMemberPermissionsTasks, communityID.String())
			return
		}
	}
}

func (m *Manager) DeleteCommunityTokenPermission(request *requests.DeleteCommunityTokenPermission) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	changes, err := community.DeleteTokenPermission(request.PermissionID)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Check if there's stil BECOME_MEMBER permissions,
	// if not we can stop checking token criteria on-chain
	// for members
	becomeMemberPermissions := community.TokenPermissionsByType(protobuf.CommunityTokenPermission_BECOME_MEMBER)
	if cancel, exists := m.periodicMemberPermissionsTasks[community.IDString()]; exists && len(becomeMemberPermissions) == 0 {
		close(cancel)
	}

	m.publish(&Subscription{Community: community})

	return community, changes, nil
}

func (m *Manager) DeleteCommunity(id types.HexBytes) error {
	err := m.persistence.DeleteCommunity(id)
	if err != nil {
		return err
	}
	return m.persistence.DeleteCommunitySettings(id)
}

// EditCommunity takes a description, updates the community with the description,
// saves it and returns it
func (m *Manager) EditCommunity(request *requests.EditCommunity) (*Community, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}
	if !community.IsAdmin() {
		return nil, errors.New("not an admin")
	}

	newDescription, err := request.ToCommunityDescription()
	if err != nil {
		return nil, fmt.Errorf("Can't create community description: %v", err)
	}

	// If permissions weren't explicitly set on original request, use existing ones
	if newDescription.Permissions.Access == protobuf.CommunityPermissions_UNKNOWN_ACCESS {
		newDescription.Permissions.Access = community.config.CommunityDescription.Permissions.Access
	}
	// Use existing images for the entries that were not updated
	// NOTE: This will NOT allow deletion of the community image; it will need to
	// be handled separately.
	for imageName := range community.config.CommunityDescription.Identity.Images {
		_, exists := newDescription.Identity.Images[imageName]
		if !exists {
			// If no image was set in ToCommunityDescription then Images is nil.
			if newDescription.Identity.Images == nil {
				newDescription.Identity.Images = make(map[string]*protobuf.IdentityImage)
			}
			newDescription.Identity.Images[imageName] = community.config.CommunityDescription.Identity.Images[imageName]
		}
	}
	// TODO: handle delete image (if needed)

	err = ValidateCommunityDescription(newDescription)
	if err != nil {
		return nil, err
	}

	// Edit the community values
	community.Edit(newDescription)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return community, nil
}

func (m *Manager) ExportCommunity(id types.HexBytes) (*ecdsa.PrivateKey, error) {
	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}

	if !community.IsAdmin() {
		return nil, errors.New("not an admin")
	}

	return community.config.PrivateKey, nil
}

func (m *Manager) ImportCommunity(key *ecdsa.PrivateKey) (*Community, error) {
	communityID := crypto.CompressPubkey(&key.PublicKey)

	community, err := m.persistence.GetByID(&m.identity.PublicKey, communityID)
	if err != nil {
		return nil, err
	}

	if community == nil {
		description := &protobuf.CommunityDescription{
			Permissions: &protobuf.CommunityPermissions{},
		}

		config := Config{
			ID:                   &key.PublicKey,
			PrivateKey:           key,
			Logger:               m.logger,
			Joined:               true,
			MemberIdentity:       &m.identity.PublicKey,
			CommunityDescription: description,
		}
		community, err = New(config)
		if err != nil {
			return nil, err
		}
	} else {
		community.config.PrivateKey = key
	}

	community.Join()
	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	return community, nil
}

func (m *Manager) CreateChat(communityID types.HexBytes, chat *protobuf.CommunityChat, publish bool, thirdPartyID string) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(communityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}
	chatID := uuid.New().String()
	if thirdPartyID != "" {
		chatID = chatID + thirdPartyID
	}

	changes, err := community.CreateChat(chatID, chat)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	if publish {
		m.publish(&Subscription{Community: community})
	}

	return community, changes, nil
}

func (m *Manager) EditChat(communityID types.HexBytes, chatID string, chat *protobuf.CommunityChat) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(communityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	// Remove communityID prefix from chatID if exists
	if strings.HasPrefix(chatID, communityID.String()) {
		chatID = strings.TrimPrefix(chatID, communityID.String())
	}

	changes, err := community.EditChat(chatID, chat)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	m.publish(&Subscription{Community: community})

	return community, changes, nil
}

func (m *Manager) DeleteChat(communityID types.HexBytes, chatID string) (*Community, *protobuf.CommunityDescription, error) {
	community, err := m.GetByID(communityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	// Remove communityID prefix from chatID if exists
	if strings.HasPrefix(chatID, communityID.String()) {
		chatID = strings.TrimPrefix(chatID, communityID.String())
	}
	description, err := community.DeleteChat(chatID)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	m.publish(&Subscription{Community: community})

	return community, description, nil
}

func (m *Manager) CreateCategory(request *requests.CreateCommunityCategory, publish bool) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	categoryID := uuid.New().String()
	if request.ThirdPartyID != "" {
		categoryID = categoryID + request.ThirdPartyID
	}

	// Remove communityID prefix from chatID if exists
	for i, cid := range request.ChatIDs {
		if strings.HasPrefix(cid, request.CommunityID.String()) {
			request.ChatIDs[i] = strings.TrimPrefix(cid, request.CommunityID.String())
		}
	}

	changes, err := community.CreateCategory(categoryID, request.CategoryName, request.ChatIDs)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	if publish {
		m.publish(&Subscription{Community: community})
	}

	return community, changes, nil
}

func (m *Manager) EditCategory(request *requests.EditCommunityCategory) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	// Remove communityID prefix from chatID if exists
	for i, cid := range request.ChatIDs {
		if strings.HasPrefix(cid, request.CommunityID.String()) {
			request.ChatIDs[i] = strings.TrimPrefix(cid, request.CommunityID.String())
		}
	}

	changes, err := community.EditCategory(request.CategoryID, request.CategoryName, request.ChatIDs)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	m.publish(&Subscription{Community: community})

	return community, changes, nil
}

func (m *Manager) EditChatFirstMessageTimestamp(communityID types.HexBytes, chatID string, timestamp uint32) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(communityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	// Remove communityID prefix from chatID if exists
	if strings.HasPrefix(chatID, communityID.String()) {
		chatID = strings.TrimPrefix(chatID, communityID.String())
	}

	changes, err := community.UpdateChatFirstMessageTimestamp(chatID, timestamp)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	m.publish(&Subscription{Community: community})

	return community, changes, nil
}

func (m *Manager) ReorderCategories(request *requests.ReorderCommunityCategories) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	changes, err := community.ReorderCategories(request.CategoryID, request.Position)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	m.publish(&Subscription{Community: community})

	return community, changes, nil
}

func (m *Manager) ReorderChat(request *requests.ReorderCommunityChat) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	// Remove communityID prefix from chatID if exists
	if strings.HasPrefix(request.ChatID, request.CommunityID.String()) {
		request.ChatID = strings.TrimPrefix(request.ChatID, request.CommunityID.String())
	}

	changes, err := community.ReorderChat(request.CategoryID, request.ChatID, request.Position)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	m.publish(&Subscription{Community: community})

	return community, changes, nil
}

func (m *Manager) DeleteCategory(request *requests.DeleteCommunityCategory) (*Community, *CommunityChanges, error) {
	community, err := m.GetByID(request.CommunityID)
	if err != nil {
		return nil, nil, err
	}
	if community == nil {
		return nil, nil, ErrOrgNotFound
	}

	changes, err := community.DeleteCategory(request.CategoryID)
	if err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	// Advertise changes
	m.publish(&Subscription{Community: community})

	return community, changes, nil
}

func (m *Manager) HandleCommunityDescriptionMessage(signer *ecdsa.PublicKey, description *protobuf.CommunityDescription, payload []byte) (*CommunityResponse, error) {
	id := crypto.CompressPubkey(signer)
	community, err := m.persistence.GetByID(&m.identity.PublicKey, id)
	if err != nil {
		return nil, err
	}

	if community == nil {
		config := Config{
			CommunityDescription:          description,
			Logger:                        m.logger,
			MarshaledCommunityDescription: payload,
			MemberIdentity:                &m.identity.PublicKey,
			ID:                            signer,
		}

		community, err = New(config)
		if err != nil {
			return nil, err
		}
	}

	changes, err := community.UpdateCommunityDescription(signer, description, payload)
	if err != nil {
		return nil, err
	}

	hasCommunityArchiveInfo, err := m.persistence.HasCommunityArchiveInfo(community.ID())
	if err != nil {
		return nil, err
	}

	cdMagnetlinkClock := community.config.CommunityDescription.ArchiveMagnetlinkClock
	if !hasCommunityArchiveInfo {
		err = m.persistence.SaveCommunityArchiveInfo(community.ID(), cdMagnetlinkClock, 0)
		if err != nil {
			return nil, err
		}
	} else {
		magnetlinkClock, err := m.persistence.GetMagnetlinkMessageClock(community.ID())
		if err != nil {
			return nil, err
		}
		if cdMagnetlinkClock > magnetlinkClock {
			err = m.persistence.UpdateMagnetlinkMessageClock(community.ID(), cdMagnetlinkClock)
			if err != nil {
				return nil, err
			}
		}
	}

	pkString := common.PubkeyToHex(&m.identity.PublicKey)

	// If the community require membership, we set whether we should leave/join the community after a state change
	if community.InvitationOnly() || community.OnRequest() || community.AcceptRequestToJoinAutomatically() {
		if changes.HasNewMember(pkString) {
			hasPendingRequest, err := m.persistence.HasPendingRequestsToJoinForUserAndCommunity(pkString, changes.Community.ID())
			if err != nil {
				return nil, err
			}
			// If there's any pending request, we should join the community
			// automatically
			changes.ShouldMemberJoin = hasPendingRequest
		}

		if changes.HasMemberLeft(pkString) {
			// If we joined previously the community, we should leave it
			changes.ShouldMemberLeave = community.Joined()
		}
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	// We mark our requests as completed, though maybe we should mark
	// any request for any user that has been added as completed
	if err := m.markRequestToJoin(&m.identity.PublicKey, community); err != nil {
		return nil, err
	}
	// Check if there's a change and we should be joining

	return &CommunityResponse{
		Community: community,
		Changes:   changes,
	}, nil
}

// TODO: This is not fully implemented, we want to save the grant passed at
// this stage and make sure it's used when publishing.
func (m *Manager) HandleCommunityInvitation(signer *ecdsa.PublicKey, invitation *protobuf.CommunityInvitation, payload []byte) (*CommunityResponse, error) {
	m.logger.Debug("Handling wrapped community description message")

	community, err := m.HandleWrappedCommunityDescriptionMessage(payload)
	if err != nil {
		return nil, err
	}

	// Save grant

	return community, nil
}

// markRequestToJoin marks all the pending requests to join as completed
// if we are members
func (m *Manager) markRequestToJoin(pk *ecdsa.PublicKey, community *Community) error {
	if community.HasMember(pk) {
		return m.persistence.SetRequestToJoinState(common.PubkeyToHex(pk), community.ID(), RequestToJoinStateAccepted)
	}
	return nil
}

func (m *Manager) markRequestToJoinAsCanceled(pk *ecdsa.PublicKey, community *Community) error {
	return m.persistence.SetRequestToJoinState(common.PubkeyToHex(pk), community.ID(), RequestToJoinStateCanceled)
}

func (m *Manager) SetMuted(id types.HexBytes, muted bool) error {
	return m.persistence.SetMuted(id, muted)
}

func (m *Manager) CancelRequestToJoin(request *requests.CancelRequestToJoinCommunity) (*RequestToJoin, *Community, error) {
	dbRequest, err := m.persistence.GetRequestToJoin(request.ID)
	if err != nil {
		return nil, nil, err
	}

	community, err := m.GetByID(dbRequest.CommunityID)
	if err != nil {
		return nil, nil, err
	}

	pk, err := common.HexToPubkey(dbRequest.PublicKey)
	if err != nil {
		return nil, nil, err
	}

	dbRequest.State = RequestToJoinStateCanceled
	if err := m.markRequestToJoinAsCanceled(pk, community); err != nil {
		return nil, nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, nil, err
	}

	return dbRequest, community, nil
}

func (m *Manager) AcceptRequestToJoin(request *requests.AcceptRequestToJoinCommunity) (*Community, error) {
	dbRequest, err := m.persistence.GetRequestToJoin(request.ID)
	if err != nil {
		return nil, err
	}

	community, err := m.GetByID(dbRequest.CommunityID)
	if err != nil {
		return nil, err
	}

	becomeMemberPermissions := community.TokenPermissionsByType(protobuf.CommunityTokenPermission_BECOME_MEMBER)
	addressesToAdd := make([]string, 0)

	if len(becomeMemberPermissions) > 0 {
		revealedAddresses, err := m.persistence.GetRequestToJoinRevealedAddresses(dbRequest.ID)
		if err != nil {
			return nil, err
		}

		walletAddresses := make([]gethcommon.Address, 0)
		for _, walletAddress := range revealedAddresses {
			walletAddresses = append(walletAddresses, gethcommon.HexToAddress(walletAddress))
		}

		hasPermission, err := m.checkPermissionToJoin(becomeMemberPermissions, walletAddresses)
		if err != nil {
			return nil, err
		}

		if !hasPermission {
			return community, ErrNoPermissionToJoin
		}

		addressesToAdd = append(addressesToAdd, revealedAddresses...)
	}

	pk, err := common.HexToPubkey(dbRequest.PublicKey)
	if err != nil {
		return nil, err
	}

	err = community.AddMember(pk, []protobuf.CommunityMember_Roles{})
	if err != nil {
		return nil, err
	}

	_, err = community.AddMemberWallet(dbRequest.PublicKey, addressesToAdd)
	if err != nil {
		return nil, err
	}

	if err := m.markRequestToJoin(pk, community); err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return community, nil
}

func (m *Manager) GetRequestToJoin(ID types.HexBytes) (*RequestToJoin, error) {
	return m.persistence.GetRequestToJoin(ID)
}

func (m *Manager) DeclineRequestToJoin(request *requests.DeclineRequestToJoinCommunity) error {
	dbRequest, err := m.persistence.GetRequestToJoin(request.ID)
	if err != nil {
		return err
	}

	return m.persistence.SetRequestToJoinState(dbRequest.PublicKey, dbRequest.CommunityID, RequestToJoinStateDeclined)
}

func (m *Manager) isUserRejectedFromCommunity(signer *ecdsa.PublicKey, community *Community) (bool, error) {
	declinedRequestsToJoin, err := m.persistence.DeclinedRequestsToJoinForCommunity(community.ID())
	if err != nil {
		return false, err
	}

	for _, req := range declinedRequestsToJoin {
		if req.PublicKey == common.PubkeyToHex(signer) {
			return true, nil
		}
	}
	return false, nil
}

func (m *Manager) HandleCommunityCancelRequestToJoin(signer *ecdsa.PublicKey, request *protobuf.CommunityCancelRequestToJoin) (*RequestToJoin, error) {
	community, err := m.persistence.GetByID(&m.identity.PublicKey, request.CommunityId)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	isUserRejected, err := m.isUserRejectedFromCommunity(signer, community)
	if err != nil {
		return nil, err
	}
	if isUserRejected {
		return nil, ErrCommunityRequestAlreadyRejected
	}

	err = m.markRequestToJoinAsCanceled(signer, community)
	if err != nil {
		return nil, err
	}

	requestToJoin, err := m.persistence.GetRequestToJoinByPk(common.PubkeyToHex(signer), community.ID(), RequestToJoinStateCanceled)
	if err != nil {
		return nil, err
	}

	return requestToJoin, nil
}

func (m *Manager) HandleCommunityRequestToJoin(signer *ecdsa.PublicKey, request *protobuf.CommunityRequestToJoin) (*RequestToJoin, error) {
	community, err := m.persistence.GetByID(&m.identity.PublicKey, request.CommunityId)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	isUserRejected, err := m.isUserRejectedFromCommunity(signer, community)
	if err != nil {
		return nil, err
	}
	if isUserRejected {
		return nil, ErrCommunityRequestAlreadyRejected
	}

	if err := community.ValidateRequestToJoin(signer, request); err != nil {
		return nil, err
	}

	requestToJoin := &RequestToJoin{
		PublicKey:         common.PubkeyToHex(signer),
		Clock:             request.Clock,
		ENSName:           request.EnsName,
		CommunityID:       request.CommunityId,
		State:             RequestToJoinStatePending,
		RevealedAddresses: request.RevealedAddresses,
	}

	requestToJoin.CalculateID()

	if err := m.persistence.SaveRequestToJoin(requestToJoin); err != nil {
		return nil, err
	}

	becomeMemberPermissions := community.TokenPermissionsByType(protobuf.CommunityTokenPermission_BECOME_MEMBER)

	// If user is already a member, then accept request automatically
	// It may happen when member removes itself from community and then tries to rejoin
	// More specifically, CommunityRequestToLeave may be delivered later than CommunityRequestToJoin, or not delivered at all
	acceptAutomatically := community.AcceptRequestToJoinAutomatically() || community.HasMember(signer)
	if len(becomeMemberPermissions) == 0 && acceptAutomatically {
		err = m.markRequestToJoin(signer, community)
		if err != nil {
			return nil, err
		}
		requestToJoin.State = RequestToJoinStateAccepted
		return requestToJoin, nil
	}

	if len(becomeMemberPermissions) > 0 {
		// we have token permissions but requester hasn't revealed
		// any addresses
		if len(request.RevealedAddresses) == 0 {
			err = m.markRequestToJoinAsCanceled(signer, community)
			if err != nil {
				return nil, err
			}
			requestToJoin.State = RequestToJoinStateDeclined
			return requestToJoin, nil
		}

		// verify if revealed addresses indeed belong to requester
		for address, signature := range request.RevealedAddresses {
			recoverParams := account.RecoverParams{
				Message:   types.EncodeHex(crypto.Keccak256(crypto.CompressPubkey(signer), community.ID(), requestToJoin.ID)),
				Signature: types.EncodeHex(signature),
			}

			recovered, err := m.accountsManager.Recover(recoverParams)
			if err != nil {
				return nil, err
			}
			if recovered.Hex() != address {
				// if ownership of only one wallet address cannot be verified,
				// we mark the request as cancelled and stop
				err = m.markRequestToJoinAsCanceled(signer, community)
				if err != nil {
					return nil, err
				}
				requestToJoin.State = RequestToJoinStateDeclined
				return requestToJoin, nil
			}
		}

		// provided wallet addresses seem to be legit, so let's check
		// if the necessary token permission funds exist
		verifiedAddresses := make([]gethcommon.Address, 0)
		for walletAddress := range request.RevealedAddresses {
			verifiedAddresses = append(verifiedAddresses, gethcommon.HexToAddress(walletAddress))
		}

		hasPermission, err := m.checkPermissionToJoin(becomeMemberPermissions, verifiedAddresses)
		if err != nil {
			return nil, err
		}

		if !hasPermission {
			err = m.markRequestToJoinAsCanceled(signer, community)
			if err != nil {
				return nil, err
			}
			requestToJoin.State = RequestToJoinStateDeclined
			return requestToJoin, nil
		}

		// Save revealed addresses + signatures so they can later be added
		// to the community member list when the request is accepted
		err = m.persistence.SaveRequestToJoinRevealedAddresses(requestToJoin)
		if err != nil {
			return nil, err
		}

		if hasPermission && acceptAutomatically {
			err = m.markRequestToJoin(signer, community)
			if err != nil {
				return nil, err
			}
			requestToJoin.State = RequestToJoinStateAccepted
		}
	}

	return requestToJoin, nil
}

func (m *Manager) checkPermissionToJoin(permissions []*protobuf.CommunityTokenPermission, walletAddresses []gethcommon.Address) (bool, error) {
	tokenAddresses, addressToSymbolMap := getTokenAddressesFromPermissions(permissions)
	balances, err := m.getAccumulatedTokenBalances(walletAddresses, tokenAddresses, addressToSymbolMap)
	if err != nil {
		return false, err
	}

	hasPermission := false
	for _, tokenPermission := range permissions {
		if checkTokenCriteria(tokenPermission.TokenCriteria, balances) {
			hasPermission = true
			break
		}
	}

	return hasPermission, nil
}

func checkTokenCriteria(tokenCriteria []*protobuf.TokenCriteria, balances map[string]*big.Float) bool {
	result := true
	hasERC20 := false
	for _, tokenRequirement := range tokenCriteria {
		// we gotta check for whether there are ERC20 token criteria
		// in the first place, if we don't we'll return a false positive
		if tokenRequirement.Type == protobuf.CommunityTokenType_ERC20 {
			hasERC20 = true
			amount, _ := strconv.ParseFloat(tokenRequirement.Amount, 32)
			if balances[tokenRequirement.Symbol].Cmp(big.NewFloat(amount)) == -1 {
				result = false
				break
			}
		}
	}
	return hasERC20 && result
}

func (m *Manager) getAccumulatedTokenBalances(accounts []gethcommon.Address, tokenAddresses []gethcommon.Address, addressToToken map[gethcommon.Address]tokenData) (map[string]*big.Float, error) {
	networks, err := m.tokenManager.RPCClient.NetworkManager.Get(false)
	if err != nil {
		return nil, err
	}

	chainIDs := make([]uint64, 0)
	for _, network := range networks {
		chainIDs = append(chainIDs, network.ChainID)
	}

	clients, err := m.tokenManager.RPCClient.EthClients(chainIDs)
	if err != nil {
		return nil, err
	}

	balancesByChain, err := m.tokenManager.GetBalancesByChain(context.Background(), clients, accounts, tokenAddresses)
	if err != nil {
		return nil, err
	}

	accumulatedBalances := make(map[string]*big.Float)
	for _, accounts := range balancesByChain {
		for _, contracts := range accounts {
			for contract, value := range contracts {
				if _, exists := accumulatedBalances[addressToToken[contract].Symbol]; !exists {
					accumulatedBalances[addressToToken[contract].Symbol] = new(big.Float)
				}
				balance := new(big.Float).Quo(
					new(big.Float).SetInt(value.ToInt()),
					big.NewFloat(math.Pow(10, float64(addressToToken[contract].Decimals))),
				)
				prevBalance := accumulatedBalances[addressToToken[contract].Symbol]
				accumulatedBalances[addressToToken[contract].Symbol].Add(prevBalance, balance)
			}
		}
	}
	return accumulatedBalances, nil
}

type tokenData struct {
	Symbol   string
	Decimals int
}

func getTokenAddressesFromPermissions(tokenPermissions []*protobuf.CommunityTokenPermission) ([]gethcommon.Address, map[gethcommon.Address]tokenData) {
	set := make(map[gethcommon.Address]bool)
	addressToToken := make(map[gethcommon.Address]tokenData)
	for _, tokenPermission := range tokenPermissions {
		for _, token := range tokenPermission.TokenCriteria {
			if token.Type == protobuf.CommunityTokenType_ERC20 {
				for _, contractAddress := range token.ContractAddresses {
					set[gethcommon.HexToAddress(contractAddress)] = true
					addressToToken[gethcommon.HexToAddress(contractAddress)] = tokenData{
						Symbol:   token.Symbol,
						Decimals: int(token.Decimals),
					}
				}
			}
		}
	}
	tokenAddresses := make([]gethcommon.Address, 0)
	for tokenAddress := range set {
		tokenAddresses = append(tokenAddresses, tokenAddress)
	}
	return tokenAddresses, addressToToken
}

func (m *Manager) HandleCommunityRequestToJoinResponse(signer *ecdsa.PublicKey, request *protobuf.CommunityRequestToJoinResponse) (*RequestToJoin, error) {
	pkString := common.PubkeyToHex(&m.identity.PublicKey)

	community, err := m.persistence.GetByID(&m.identity.PublicKey, request.CommunityId)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	communityDescriptionBytes, err := proto.Marshal(request.Community)
	if err != nil {
		return nil, err
	}

	// We need to wrap `request.Community` in an `ApplicationMetadataMessage`
	// of type `CommunityDescription` because `UpdateCommunityDescription` expects this.
	//
	// This is merely for marsheling/unmarsheling, hence we attaching a `Signature`
	// is not needed.
	metadataMessage := &protobuf.ApplicationMetadataMessage{
		Payload: communityDescriptionBytes,
		Type:    protobuf.ApplicationMetadataMessage_COMMUNITY_DESCRIPTION,
	}

	appMetadataMsg, err := proto.Marshal(metadataMessage)
	if err != nil {
		return nil, err
	}

	_, err = community.UpdateCommunityDescription(signer, request.Community, appMetadataMsg)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	if request.Accepted {
		err = m.markRequestToJoin(&m.identity.PublicKey, community)
		if err != nil {
			return nil, err
		}
	} else {

		err = m.persistence.SetRequestToJoinState(pkString, community.ID(), RequestToJoinStateDeclined)
		if err != nil {
			return nil, err
		}
	}

	return m.persistence.GetRequestToJoinByPkAndCommunityID(pkString, community.ID())
}

func (m *Manager) HandleCommunityRequestToLeave(signer *ecdsa.PublicKey, proto *protobuf.CommunityRequestToLeave) error {
	requestToLeave := NewRequestToLeave(common.PubkeyToHex(signer), proto)
	if err := m.persistence.SaveRequestToLeave(requestToLeave); err != nil {
		return err
	}

	// Ensure corresponding requestToJoin clock is older than requestToLeave
	requestToJoin, err := m.persistence.GetRequestToJoin(requestToLeave.ID)
	if err != nil {
		return err
	}
	if requestToJoin.Clock > requestToLeave.Clock {
		return ErrOldRequestToLeave
	}

	return nil
}

func (m *Manager) HandleWrappedCommunityDescriptionMessage(payload []byte) (*CommunityResponse, error) {
	m.logger.Debug("Handling wrapped community description message")

	applicationMetadataMessage := &protobuf.ApplicationMetadataMessage{}
	err := proto.Unmarshal(payload, applicationMetadataMessage)
	if err != nil {
		return nil, err
	}
	if applicationMetadataMessage.Type != protobuf.ApplicationMetadataMessage_COMMUNITY_DESCRIPTION {
		return nil, ErrInvalidMessage
	}
	signer, err := applicationMetadataMessage.RecoverKey()
	if err != nil {
		return nil, err
	}

	description := &protobuf.CommunityDescription{}

	err = proto.Unmarshal(applicationMetadataMessage.Payload, description)
	if err != nil {
		return nil, err
	}

	return m.HandleCommunityDescriptionMessage(signer, description, payload)
}

func (m *Manager) JoinCommunity(id types.HexBytes) (*Community, error) {
	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}
	community.Join()
	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}
	return community, nil
}

func (m *Manager) SpectateCommunity(id types.HexBytes) (*Community, error) {
	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}
	community.Spectate()
	if err = m.persistence.SaveCommunity(community); err != nil {
		return nil, err
	}
	return community, nil
}

func (m *Manager) GetMagnetlinkMessageClock(communityID types.HexBytes) (uint64, error) {
	return m.persistence.GetMagnetlinkMessageClock(communityID)
}

func (m *Manager) GetRequestToJoinIDByPkAndCommunityID(pk *ecdsa.PublicKey, communityID []byte) ([]byte, error) {
	return m.persistence.GetRequestToJoinIDByPkAndCommunityID(common.PubkeyToHex(pk), communityID)
}

func (m *Manager) UpdateCommunityDescriptionMagnetlinkMessageClock(communityID types.HexBytes, clock uint64) error {
	community, err := m.GetByIDString(communityID.String())
	if err != nil {
		return err
	}
	community.config.CommunityDescription.ArchiveMagnetlinkClock = clock
	return m.persistence.SaveCommunity(community)
}

func (m *Manager) UpdateMagnetlinkMessageClock(communityID types.HexBytes, clock uint64) error {
	return m.persistence.UpdateMagnetlinkMessageClock(communityID, clock)
}

func (m *Manager) UpdateLastSeenMagnetlink(communityID types.HexBytes, magnetlinkURI string) error {
	return m.persistence.UpdateLastSeenMagnetlink(communityID, magnetlinkURI)
}

func (m *Manager) GetLastSeenMagnetlink(communityID types.HexBytes) (string, error) {
	return m.persistence.GetLastSeenMagnetlink(communityID)
}

func (m *Manager) LeaveCommunity(id types.HexBytes) (*Community, error) {
	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	community.RemoveOurselvesFromOrg(&m.identity.PublicKey)
	community.Leave()

	if err = m.persistence.SaveCommunity(community); err != nil {
		return nil, err
	}

	return community, nil
}

func (m *Manager) inviteUsersToCommunity(community *Community, pks []*ecdsa.PublicKey) (*Community, error) {
	var invitations []*protobuf.CommunityInvitation
	for _, pk := range pks {
		invitation, err := community.InviteUserToOrg(pk)
		if err != nil {
			return nil, err
		}
		// We mark the user request (if any) as completed
		if err := m.markRequestToJoin(pk, community); err != nil {
			return nil, err
		}

		invitations = append(invitations, invitation)
	}

	err := m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community, Invitations: invitations})

	return community, nil
}

func (m *Manager) InviteUsersToCommunity(communityID types.HexBytes, pks []*ecdsa.PublicKey) (*Community, error) {
	community, err := m.GetByID(communityID)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	return m.inviteUsersToCommunity(community, pks)
}

func (m *Manager) AddMemberOwnerToCommunity(communityID types.HexBytes, pk *ecdsa.PublicKey) (*Community, error) {
	community, err := m.GetByID(communityID)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	err = community.AddMember(pk, []protobuf.CommunityMember_Roles{protobuf.CommunityMember_ROLE_ALL})
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})
	return community, nil
}

func (m *Manager) RemoveUserFromCommunity(id types.HexBytes, pk *ecdsa.PublicKey) (*Community, error) {
	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	_, err = community.RemoveUserFromOrg(pk)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return community, nil
}

func (m *Manager) UnbanUserFromCommunity(request *requests.UnbanUserFromCommunity) (*Community, error) {
	id := request.CommunityID
	publicKey, err := common.HexToPubkey(request.User.String())
	if err != nil {
		return nil, err
	}

	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	_, err = community.UnbanUserFromCommunity(publicKey)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return community, nil
}

func (m *Manager) AddRoleToMember(request *requests.AddRoleToMember) (*Community, error) {
	id := request.CommunityID
	publicKey, err := common.HexToPubkey(request.User.String())
	if err != nil {
		return nil, err
	}

	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	if !community.hasMember(publicKey) {
		return nil, ErrMemberNotFound
	}

	_, err = community.AddRoleToMember(publicKey, request.Role)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return community, nil
}

func (m *Manager) RemoveRoleFromMember(request *requests.RemoveRoleFromMember) (*Community, error) {
	id := request.CommunityID
	publicKey, err := common.HexToPubkey(request.User.String())
	if err != nil {
		return nil, err
	}

	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	if !community.hasMember(publicKey) {
		return nil, ErrMemberNotFound
	}

	_, err = community.RemoveRoleFromMember(publicKey, request.Role)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return community, nil
}

func (m *Manager) BanUserFromCommunity(request *requests.BanUserFromCommunity) (*Community, error) {
	id := request.CommunityID

	publicKey, err := common.HexToPubkey(request.User.String())
	if err != nil {
		return nil, err
	}

	community, err := m.GetByID(id)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	_, err = community.BanUserFromCommunity(publicKey)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return community, nil
}

func (m *Manager) GetByID(id []byte) (*Community, error) {
	return m.persistence.GetByID(&m.identity.PublicKey, id)
}

func (m *Manager) GetByIDString(idString string) (*Community, error) {
	id, err := types.DecodeHex(idString)
	if err != nil {
		return nil, err
	}
	return m.GetByID(id)
}

func (m *Manager) RequestToJoin(requester *ecdsa.PublicKey, request *requests.RequestToJoinCommunity) (*Community, *RequestToJoin, error) {
	community, err := m.persistence.GetByID(&m.identity.PublicKey, request.CommunityID)
	if err != nil {
		return nil, nil, err
	}

	// We don't allow requesting access if already joined
	if community.Joined() {
		return nil, nil, ErrAlreadyJoined
	}

	clock := uint64(time.Now().Unix())
	requestToJoin := &RequestToJoin{
		PublicKey:         common.PubkeyToHex(requester),
		Clock:             clock,
		ENSName:           request.ENSName,
		CommunityID:       request.CommunityID,
		State:             RequestToJoinStatePending,
		Our:               true,
		RevealedAddresses: make(map[string][]byte),
	}

	requestToJoin.CalculateID()

	if err := m.persistence.SaveRequestToJoin(requestToJoin); err != nil {
		return nil, nil, err
	}
	community.config.RequestedToJoinAt = uint64(time.Now().Unix())
	community.AddRequestToJoin(requestToJoin)

	return community, requestToJoin, nil
}

func (m *Manager) SaveRequestToJoin(request *RequestToJoin) error {
	return m.persistence.SaveRequestToJoin(request)
}

func (m *Manager) CanceledRequestsToJoinForUser(pk *ecdsa.PublicKey) ([]*RequestToJoin, error) {
	return m.persistence.CanceledRequestsToJoinForUser(common.PubkeyToHex(pk))
}

func (m *Manager) PendingRequestsToJoinForUser(pk *ecdsa.PublicKey) ([]*RequestToJoin, error) {
	return m.persistence.PendingRequestsToJoinForUser(common.PubkeyToHex(pk))
}

func (m *Manager) PendingRequestsToJoinForCommunity(id types.HexBytes) ([]*RequestToJoin, error) {
	m.logger.Info("fetching pending invitations", zap.String("community-id", id.String()))
	return m.persistence.PendingRequestsToJoinForCommunity(id)
}

func (m *Manager) DeclinedRequestsToJoinForCommunity(id types.HexBytes) ([]*RequestToJoin, error) {
	m.logger.Info("fetching declined invitations", zap.String("community-id", id.String()))
	return m.persistence.DeclinedRequestsToJoinForCommunity(id)
}

func (m *Manager) CanceledRequestsToJoinForCommunity(id types.HexBytes) ([]*RequestToJoin, error) {
	m.logger.Info("fetching canceled invitations", zap.String("community-id", id.String()))
	return m.persistence.CanceledRequestsToJoinForCommunity(id)
}

func (m *Manager) CanPost(pk *ecdsa.PublicKey, communityID string, chatID string, grant []byte) (bool, error) {
	community, err := m.GetByIDString(communityID)
	if err != nil {
		return false, err
	}
	if community == nil {
		return false, nil
	}
	return community.CanPost(pk, chatID, grant)
}

func (m *Manager) IsEncrypted(communityID string) (bool, error) {
	community, err := m.GetByIDString(communityID)
	if err != nil {
		return false, err
	}

	return community.Encrypted(), nil

}
func (m *Manager) ShouldHandleSyncCommunity(community *protobuf.SyncCommunity) (bool, error) {
	return m.persistence.ShouldHandleSyncCommunity(community)
}

func (m *Manager) ShouldHandleSyncCommunitySettings(communitySettings *protobuf.SyncCommunitySettings) (bool, error) {
	return m.persistence.ShouldHandleSyncCommunitySettings(communitySettings)
}

func (m *Manager) HandleSyncCommunitySettings(syncCommunitySettings *protobuf.SyncCommunitySettings) (*CommunitySettings, error) {
	id, err := types.DecodeHex(syncCommunitySettings.CommunityId)
	if err != nil {
		return nil, err
	}

	settings, err := m.persistence.GetCommunitySettingsByID(id)
	if err != nil {
		return nil, err
	}

	if settings == nil {
		settings = &CommunitySettings{
			CommunityID:                  syncCommunitySettings.CommunityId,
			HistoryArchiveSupportEnabled: syncCommunitySettings.HistoryArchiveSupportEnabled,
			Clock:                        syncCommunitySettings.Clock,
		}
	}

	if syncCommunitySettings.Clock > settings.Clock {
		settings.CommunityID = syncCommunitySettings.CommunityId
		settings.HistoryArchiveSupportEnabled = syncCommunitySettings.HistoryArchiveSupportEnabled
		settings.Clock = syncCommunitySettings.Clock
	}

	err = m.persistence.SaveCommunitySettings(*settings)
	if err != nil {
		return nil, err
	}
	return settings, nil
}

func (m *Manager) SetSyncClock(id []byte, clock uint64) error {
	return m.persistence.SetSyncClock(id, clock)
}

func (m *Manager) SetPrivateKey(id []byte, privKey *ecdsa.PrivateKey) error {
	return m.persistence.SetPrivateKey(id, privKey)
}

func (m *Manager) GetSyncedRawCommunity(id []byte) (*RawCommunityRow, error) {
	return m.persistence.getSyncedRawCommunity(id)
}

func (m *Manager) GetCommunitySettingsByID(id types.HexBytes) (*CommunitySettings, error) {
	return m.persistence.GetCommunitySettingsByID(id)
}

func (m *Manager) GetCommunitiesSettings() ([]CommunitySettings, error) {
	return m.persistence.GetCommunitiesSettings()
}

func (m *Manager) SaveCommunitySettings(settings CommunitySettings) error {
	return m.persistence.SaveCommunitySettings(settings)
}

func (m *Manager) CommunitySettingsExist(id types.HexBytes) (bool, error) {
	return m.persistence.CommunitySettingsExist(id)
}

func (m *Manager) DeleteCommunitySettings(id types.HexBytes) error {
	return m.persistence.DeleteCommunitySettings(id)
}

func (m *Manager) UpdateCommunitySettings(settings CommunitySettings) error {
	return m.persistence.UpdateCommunitySettings(settings)
}

func (m *Manager) GetAdminCommunitiesChatIDs() (map[string]bool, error) {
	adminCommunities, err := m.Created()
	if err != nil {
		return nil, err
	}

	chatIDs := make(map[string]bool)
	for _, c := range adminCommunities {
		if c.Joined() {
			for _, id := range c.ChatIDs() {
				chatIDs[id] = true
			}
		}
	}
	return chatIDs, nil
}

func (m *Manager) IsAdminCommunityByID(communityID types.HexBytes) (bool, error) {
	pubKey, err := crypto.DecompressPubkey(communityID)
	if err != nil {
		return false, err
	}
	return m.IsAdminCommunity(pubKey)
}

func (m *Manager) IsAdminCommunity(pubKey *ecdsa.PublicKey) (bool, error) {
	adminCommunities, err := m.Created()
	if err != nil {
		return false, err
	}

	for _, c := range adminCommunities {
		if c.PrivateKey().PublicKey.Equal(pubKey) {
			return true, nil
		}
	}
	return false, nil
}

func (m *Manager) IsJoinedCommunity(pubKey *ecdsa.PublicKey) (bool, error) {
	community, err := m.GetByID(crypto.CompressPubkey(pubKey))
	if err != nil {
		return false, err
	}

	return community != nil && community.Joined(), nil
}

func (m *Manager) GetCommunityChatsFilters(communityID types.HexBytes) ([]*transport.Filter, error) {
	chatIDs, err := m.persistence.GetCommunityChatIDs(communityID)
	if err != nil {
		return nil, err
	}

	filters := []*transport.Filter{}
	for _, cid := range chatIDs {
		filters = append(filters, m.transport.FilterByChatID(cid))
	}
	return filters, nil
}

func (m *Manager) GetCommunityChatsTopics(communityID types.HexBytes) ([]types.TopicType, error) {
	filters, err := m.GetCommunityChatsFilters(communityID)
	if err != nil {
		return nil, err
	}

	topics := []types.TopicType{}
	for _, filter := range filters {
		topics = append(topics, filter.Topic)
	}

	return topics, nil
}

func (m *Manager) StoreWakuMessage(message *types.Message) error {
	return m.persistence.SaveWakuMessage(message)
}

func (m *Manager) StoreWakuMessages(messages []*types.Message) error {
	return m.persistence.SaveWakuMessages(messages)
}

func (m *Manager) GetLatestWakuMessageTimestamp(topics []types.TopicType) (uint64, error) {
	return m.persistence.GetLatestWakuMessageTimestamp(topics)
}

func (m *Manager) GetOldestWakuMessageTimestamp(topics []types.TopicType) (uint64, error) {
	return m.persistence.GetOldestWakuMessageTimestamp(topics)
}

func (m *Manager) GetLastMessageArchiveEndDate(communityID types.HexBytes) (uint64, error) {
	return m.persistence.GetLastMessageArchiveEndDate(communityID)
}

func (m *Manager) GetHistoryArchivePartitionStartTimestamp(communityID types.HexBytes) (uint64, error) {
	filters, err := m.GetCommunityChatsFilters(communityID)
	if err != nil {
		m.LogStdout("failed to get community chats filters", zap.Error(err))
		return 0, err
	}

	if len(filters) == 0 {
		// If we don't have chat filters, we likely don't have any chats
		// associated to this community, which means there's nothing more
		// to do here
		return 0, nil
	}

	topics := []types.TopicType{}

	for _, filter := range filters {
		topics = append(topics, filter.Topic)
	}

	lastArchiveEndDateTimestamp, err := m.GetLastMessageArchiveEndDate(communityID)
	if err != nil {
		m.LogStdout("failed to get last archive end date", zap.Error(err))
		return 0, err
	}

	if lastArchiveEndDateTimestamp == 0 {
		// If we don't have a tracked last message archive end date, it
		// means we haven't created an archive before, which means
		// the next thing to look at is the oldest waku message timestamp for
		// this community
		lastArchiveEndDateTimestamp, err = m.GetOldestWakuMessageTimestamp(topics)
		if err != nil {
			m.LogStdout("failed to get oldest waku message timestamp", zap.Error(err))
			return 0, err
		}
		if lastArchiveEndDateTimestamp == 0 {
			// This means there's no waku message stored for this community so far
			// (even after requesting possibly missed messages), so no messages exist yet that can be archived
			m.LogStdout("can't find valid `lastArchiveEndTimestamp`")
			return 0, nil
		}
	}

	return lastArchiveEndDateTimestamp, nil
}

func (m *Manager) CreateAndSeedHistoryArchive(communityID types.HexBytes, topics []types.TopicType, startDate time.Time, endDate time.Time, partition time.Duration, encrypt bool) error {
	m.UnseedHistoryArchiveTorrent(communityID)
	_, err := m.CreateHistoryArchiveTorrentFromDB(communityID, topics, startDate, endDate, partition, encrypt)
	if err != nil {
		return err
	}
	return m.SeedHistoryArchiveTorrent(communityID)
}

func (m *Manager) StartHistoryArchiveTasksInterval(community *Community, interval time.Duration) {
	id := community.IDString()
	_, exists := m.historyArchiveTasks[id]

	if exists {
		m.LogStdout("history archive tasks interval already in progres", zap.String("id", id))
		return
	}

	cancel := make(chan struct{})
	m.historyArchiveTasks[id] = cancel
	m.historyArchiveTasksWaitGroup.Add(1)

	ticker := time.NewTicker(interval)
	defer ticker.Stop()

	m.LogStdout("starting history archive tasks interval", zap.String("id", id))
	for {
		select {
		case <-ticker.C:
			m.LogStdout("starting archive task...", zap.String("id", id))
			lastArchiveEndDateTimestamp, err := m.GetHistoryArchivePartitionStartTimestamp(community.ID())
			if err != nil {
				m.LogStdout("failed to get last archive end date", zap.Error(err))
				continue
			}

			if lastArchiveEndDateTimestamp == 0 {
				// This means there are no waku messages for this community,
				// so nothing to do here
				m.LogStdout("couldn't determine archive start date - skipping")
				continue
			}

			topics, err := m.GetCommunityChatsTopics(community.ID())
			if err != nil {
				m.LogStdout("failed to get community chat topics ", zap.Error(err))
				continue
			}

			ts := time.Now().Unix()
			to := time.Unix(ts, 0)
			lastArchiveEndDate := time.Unix(int64(lastArchiveEndDateTimestamp), 0)

			err = m.CreateAndSeedHistoryArchive(community.ID(), topics, lastArchiveEndDate, to, interval, community.Encrypted())
			if err != nil {
				m.LogStdout("failed to create and seed history archive", zap.Error(err))
				continue
			}
		case <-cancel:
			m.UnseedHistoryArchiveTorrent(community.ID())
			delete(m.historyArchiveTasks, id)
			m.historyArchiveTasksWaitGroup.Done()
			return
		}
	}
}

func (m *Manager) StopHistoryArchiveTasksIntervals() {
	for _, t := range m.historyArchiveTasks {
		close(t)
	}
	// Stoping archive interval tasks is async, so we need
	// to wait for all of them to be closed before we shutdown
	// the torrent client
	m.historyArchiveTasksWaitGroup.Wait()
}

func (m *Manager) StopHistoryArchiveTasksInterval(communityID types.HexBytes) {
	task, ok := m.historyArchiveTasks[communityID.String()]
	if ok {
		m.logger.Info("Stopping history archive tasks interval", zap.Any("id", communityID.String()))
		close(task)
	}
}

type EncodedArchiveData struct {
	padding int
	bytes   []byte
}

func (m *Manager) CreateHistoryArchiveTorrentFromMessages(communityID types.HexBytes, messages []*types.Message, topics []types.TopicType, startDate time.Time, endDate time.Time, partition time.Duration, encrypt bool) ([]string, error) {
	return m.CreateHistoryArchiveTorrent(communityID, messages, topics, startDate, endDate, partition, encrypt)
}

func (m *Manager) CreateHistoryArchiveTorrentFromDB(communityID types.HexBytes, topics []types.TopicType, startDate time.Time, endDate time.Time, partition time.Duration, encrypt bool) ([]string, error) {

	return m.CreateHistoryArchiveTorrent(communityID, make([]*types.Message, 0), topics, startDate, endDate, partition, encrypt)
}
func (m *Manager) CreateHistoryArchiveTorrent(communityID types.HexBytes, msgs []*types.Message, topics []types.TopicType, startDate time.Time, endDate time.Time, partition time.Duration, encrypt bool) ([]string, error) {

	loadFromDB := len(msgs) == 0

	from := startDate
	to := from.Add(partition)
	if to.After(endDate) {
		to = endDate
	}

	archiveDir := m.torrentConfig.DataDir + "/" + communityID.String()
	torrentDir := m.torrentConfig.TorrentDir
	indexPath := archiveDir + "/index"
	dataPath := archiveDir + "/data"

	wakuMessageArchiveIndexProto := &protobuf.WakuMessageArchiveIndex{}
	wakuMessageArchiveIndex := make(map[string]*protobuf.WakuMessageArchiveIndexMetadata)
	archiveIDs := make([]string, 0)

	if _, err := os.Stat(archiveDir); os.IsNotExist(err) {
		err := os.MkdirAll(archiveDir, 0700)
		if err != nil {
			return archiveIDs, err
		}
	}
	if _, err := os.Stat(torrentDir); os.IsNotExist(err) {
		err := os.MkdirAll(torrentDir, 0700)
		if err != nil {
			return archiveIDs, err
		}
	}

	_, err := os.Stat(indexPath)
	if err == nil {
		wakuMessageArchiveIndexProto, err = m.LoadHistoryArchiveIndexFromFile(m.identity, communityID)
		if err != nil {
			return archiveIDs, err
		}
	}

	var offset uint64 = 0

	for hash, metadata := range wakuMessageArchiveIndexProto.Archives {
		offset = offset + metadata.Size
		wakuMessageArchiveIndex[hash] = metadata
	}

	var encodedArchives []*EncodedArchiveData
	topicsAsByteArrays := topicsAsByteArrays(topics)

	m.publish(&Subscription{CreatingHistoryArchivesSignal: &signal.CreatingHistoryArchivesSignal{
		CommunityID: communityID.String(),
	}})

	m.LogStdout("creating archives",
		zap.Any("startDate", startDate),
		zap.Any("endDate", endDate),
		zap.Duration("partition", partition),
	)
	for {
		if from.Equal(endDate) || from.After(endDate) {
			break
		}
		m.LogStdout("creating message archive",
			zap.Any("from", from),
			zap.Any("to", to),
		)

		var messages []types.Message
		if loadFromDB {
			messages, err = m.persistence.GetWakuMessagesByFilterTopic(topics, uint64(from.Unix()), uint64(to.Unix()))
			if err != nil {
				return archiveIDs, err
			}
		} else {
			for _, msg := range msgs {
				if int64(msg.Timestamp) >= from.Unix() && int64(msg.Timestamp) < to.Unix() {
					messages = append(messages, *msg)
				}
			}

		}

		if len(messages) == 0 {
			// No need to create an archive with zero messages
			m.LogStdout("no messages in this partition")
			from = to
			to = to.Add(partition)
			if to.After(endDate) {
				to = endDate
			}
			continue
		}

		// Not only do we partition messages, we also chunk them
		// roughly by size, such that each chunk will not exceed a given
		// size and archive data doesn't get too big
		messageChunks := make([][]types.Message, 0)
		currentChunkSize := 0
		currentChunk := make([]types.Message, 0)

		for _, msg := range messages {
			msgSize := len(msg.Payload) + len(msg.Sig)
			if msgSize > maxArchiveSizeInBytes {
				// we drop messages this big
				continue
			}

			if currentChunkSize+msgSize > maxArchiveSizeInBytes {
				messageChunks = append(messageChunks, currentChunk)
				currentChunk = make([]types.Message, 0)
				currentChunkSize = 0
			}
			currentChunk = append(currentChunk, msg)
			currentChunkSize = currentChunkSize + msgSize
		}
		messageChunks = append(messageChunks, currentChunk)

		for _, messages := range messageChunks {
			wakuMessageArchive := m.createWakuMessageArchive(from, to, messages, topicsAsByteArrays)
			encodedArchive, err := proto.Marshal(wakuMessageArchive)
			if err != nil {
				return archiveIDs, err
			}

			if encrypt {
				messageSpec, err := m.encryptor.BuildHashRatchetMessage(communityID, encodedArchive)
				if err != nil {
					return archiveIDs, err
				}

				encodedArchive, err = proto.Marshal(messageSpec.Message)
				if err != nil {
					return archiveIDs, err
				}
			}

			rawSize := len(encodedArchive)
			padding := 0
			size := 0

			if rawSize > pieceLength {
				size = rawSize + pieceLength - (rawSize % pieceLength)
				padding = size - rawSize
			} else {
				padding = pieceLength - rawSize
				size = rawSize + padding
			}

			wakuMessageArchiveIndexMetadata := &protobuf.WakuMessageArchiveIndexMetadata{
				Metadata: wakuMessageArchive.Metadata,
				Offset:   offset,
				Size:     uint64(size),
				Padding:  uint64(padding),
			}

			wakuMessageArchiveIndexMetadataBytes, err := proto.Marshal(wakuMessageArchiveIndexMetadata)
			if err != nil {
				return archiveIDs, err
			}

			archiveID := crypto.Keccak256Hash(wakuMessageArchiveIndexMetadataBytes).String()
			archiveIDs = append(archiveIDs, archiveID)
			wakuMessageArchiveIndex[archiveID] = wakuMessageArchiveIndexMetadata
			encodedArchives = append(encodedArchives, &EncodedArchiveData{bytes: encodedArchive, padding: padding})
			offset = offset + uint64(rawSize) + uint64(padding)
		}

		from = to
		to = to.Add(partition)
		if to.After(endDate) {
			to = endDate
		}
	}

	if len(encodedArchives) > 0 {

		dataBytes := make([]byte, 0)

		for _, encodedArchiveData := range encodedArchives {
			dataBytes = append(dataBytes, encodedArchiveData.bytes...)
			dataBytes = append(dataBytes, make([]byte, encodedArchiveData.padding)...)
		}

		wakuMessageArchiveIndexProto.Archives = wakuMessageArchiveIndex
		indexBytes, err := proto.Marshal(wakuMessageArchiveIndexProto)
		if err != nil {
			return archiveIDs, err
		}

		if encrypt {
			messageSpec, err := m.encryptor.BuildHashRatchetMessage(communityID, indexBytes)
			if err != nil {
				return archiveIDs, err
			}
			indexBytes, err = proto.Marshal(messageSpec.Message)
			if err != nil {
				return archiveIDs, err
			}
		}

		err = os.WriteFile(indexPath, indexBytes, 0644) // nolint: gosec
		if err != nil {
			return archiveIDs, err
		}

		file, err := os.OpenFile(dataPath, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
		if err != nil {
			return archiveIDs, err
		}
		defer file.Close()

		_, err = file.Write(dataBytes)
		if err != nil {
			return archiveIDs, err
		}

		metaInfo := metainfo.MetaInfo{
			AnnounceList: defaultAnnounceList,
		}
		metaInfo.SetDefaults()
		metaInfo.CreatedBy = common.PubkeyToHex(&m.identity.PublicKey)

		info := metainfo.Info{
			PieceLength: int64(pieceLength),
		}

		err = info.BuildFromFilePath(archiveDir)
		if err != nil {
			return archiveIDs, err
		}

		metaInfo.InfoBytes, err = bencode.Marshal(info)
		if err != nil {
			return archiveIDs, err
		}

		metaInfoBytes, err := bencode.Marshal(metaInfo)
		if err != nil {
			return archiveIDs, err
		}

		err = os.WriteFile(m.torrentFile(communityID.String()), metaInfoBytes, 0644) // nolint: gosec
		if err != nil {
			return archiveIDs, err
		}

		m.LogStdout("torrent created", zap.Any("from", startDate.Unix()), zap.Any("to", endDate.Unix()))

		m.publish(&Subscription{
			HistoryArchivesCreatedSignal: &signal.HistoryArchivesCreatedSignal{
				CommunityID: communityID.String(),
				From:        int(startDate.Unix()),
				To:          int(endDate.Unix()),
			},
		})
	} else {
		m.LogStdout("no archives created")
		m.publish(&Subscription{
			NoHistoryArchivesCreatedSignal: &signal.NoHistoryArchivesCreatedSignal{
				CommunityID: communityID.String(),
				From:        int(startDate.Unix()),
				To:          int(endDate.Unix()),
			},
		})
	}

	lastMessageArchiveEndDate, err := m.persistence.GetLastMessageArchiveEndDate(communityID)
	if err != nil {
		return archiveIDs, err
	}

	if lastMessageArchiveEndDate > 0 {
		err = m.persistence.UpdateLastMessageArchiveEndDate(communityID, uint64(from.Unix()))
	} else {
		err = m.persistence.SaveLastMessageArchiveEndDate(communityID, uint64(from.Unix()))
	}
	if err != nil {
		return archiveIDs, err
	}
	return archiveIDs, nil
}

func (m *Manager) SeedHistoryArchiveTorrent(communityID types.HexBytes) error {
	m.UnseedHistoryArchiveTorrent(communityID)

	id := communityID.String()
	torrentFile := m.torrentFile(id)

	metaInfo, err := metainfo.LoadFromFile(torrentFile)
	if err != nil {
		return err
	}

	info, err := metaInfo.UnmarshalInfo()
	if err != nil {
		return err
	}

	hash := metaInfo.HashInfoBytes()
	m.torrentTasks[id] = hash

	if err != nil {
		return err
	}

	torrent, err := m.torrentClient.AddTorrent(metaInfo)
	if err != nil {
		return err
	}
	torrent.DownloadAll()

	m.publish(&Subscription{
		HistoryArchivesSeedingSignal: &signal.HistoryArchivesSeedingSignal{
			CommunityID: communityID.String(),
		},
	})

	magnetLink := metaInfo.Magnet(nil, &info).String()

	m.LogStdout("seeding torrent", zap.String("id", id), zap.String("magnetLink", magnetLink))
	return nil
}

func (m *Manager) UnseedHistoryArchiveTorrent(communityID types.HexBytes) {
	id := communityID.String()

	hash, exists := m.torrentTasks[id]

	if exists {
		torrent, ok := m.torrentClient.Torrent(hash)
		if ok {
			m.logger.Debug("Unseeding and dropping torrent for community: ", zap.Any("id", id))
			torrent.Drop()
			delete(m.torrentTasks, id)

			m.publish(&Subscription{
				HistoryArchivesUnseededSignal: &signal.HistoryArchivesUnseededSignal{
					CommunityID: id,
				},
			})
		}
	}
}

func (m *Manager) IsSeedingHistoryArchiveTorrent(communityID types.HexBytes) bool {
	id := communityID.String()
	hash := m.torrentTasks[id]
	torrent, ok := m.torrentClient.Torrent(hash)
	return ok && torrent.Seeding()
}

func (m *Manager) GetHistoryArchiveDownloadTask(communityID string) *HistoryArchiveDownloadTask {
	return m.historyArchiveDownloadTasks[communityID]
}

func (m *Manager) DeleteHistoryArchiveDownloadTask(communityID string) {
	delete(m.historyArchiveDownloadTasks, communityID)
}

func (m *Manager) AddHistoryArchiveDownloadTask(communityID string, task *HistoryArchiveDownloadTask) {
	m.historyArchiveDownloadTasks[communityID] = task
}

type HistoryArchiveDownloadTaskInfo struct {
	TotalDownloadedArchivesCount int
	TotalArchivesCount           int
	Cancelled                    bool
}

func (m *Manager) DownloadHistoryArchivesByMagnetlink(communityID types.HexBytes, magnetlink string, cancelTask chan struct{}) (*HistoryArchiveDownloadTaskInfo, error) {

	id := communityID.String()

	ml, err := metainfo.ParseMagnetUri(magnetlink)
	if err != nil {
		return nil, err
	}

	m.logger.Debug("adding torrent via magnetlink for community", zap.String("id", id), zap.String("magnetlink", magnetlink))
	torrent, err := m.torrentClient.AddMagnet(magnetlink)
	if err != nil {
		return nil, err
	}

	downloadTaskInfo := &HistoryArchiveDownloadTaskInfo{
		TotalDownloadedArchivesCount: 0,
		TotalArchivesCount:           0,
		Cancelled:                    false,
	}

	m.torrentTasks[id] = ml.InfoHash
	timeout := time.After(20 * time.Second)

	m.LogStdout("fetching torrent info", zap.String("magnetlink", magnetlink))
	select {
	case <-timeout:
		return nil, ErrTorrentTimedout
	case <-cancelTask:
		m.LogStdout("cancelled fetching torrent info")
		downloadTaskInfo.Cancelled = true
		return downloadTaskInfo, nil
	case <-torrent.GotInfo():

		files := torrent.Files()

		i, ok := findIndexFile(files)
		if !ok {
			// We're dealing with a malformed torrent, so don't do anything
			return nil, errors.New("malformed torrent data")
		}

		indexFile := files[i]
		indexFile.Download()

		m.LogStdout("downloading history archive index")
		ticker := time.NewTicker(100 * time.Millisecond)
		defer ticker.Stop()

		for {
			select {
			case <-cancelTask:
				m.LogStdout("cancelled downloading archive index")
				downloadTaskInfo.Cancelled = true
				return downloadTaskInfo, nil
			case <-ticker.C:
				if indexFile.BytesCompleted() == indexFile.Length() {

					index, err := m.LoadHistoryArchiveIndexFromFile(m.identity, communityID)
					if err != nil {
						return nil, err
					}

					existingArchiveIDs, err := m.persistence.GetDownloadedMessageArchiveIDs(communityID)
					if err != nil {
						return nil, err
					}

					if len(existingArchiveIDs) == len(index.Archives) {
						m.LogStdout("download cancelled, no new archives")
						return downloadTaskInfo, nil
					}

					downloadTaskInfo.TotalDownloadedArchivesCount = len(existingArchiveIDs)
					downloadTaskInfo.TotalArchivesCount = len(index.Archives)

					archiveHashes := make(archiveMDSlice, 0, downloadTaskInfo.TotalArchivesCount)

					for hash, metadata := range index.Archives {
						archiveHashes = append(archiveHashes, &archiveMetadata{hash: hash, from: metadata.Metadata.From})
					}

					sort.Sort(sort.Reverse(archiveHashes))

					m.publish(&Subscription{
						DownloadingHistoryArchivesStartedSignal: &signal.DownloadingHistoryArchivesStartedSignal{
							CommunityID: communityID.String(),
						},
					})

					for _, hd := range archiveHashes {

						hash := hd.hash
						hasArchive := false

						for _, existingHash := range existingArchiveIDs {
							if existingHash == hash {
								hasArchive = true
								break
							}
						}
						if hasArchive {
							continue
						}

						metadata := index.Archives[hash]
						startIndex := int(metadata.Offset) / pieceLength
						endIndex := startIndex + int(metadata.Size)/pieceLength

						downloadMsg := fmt.Sprintf("downloading data for message archive (%d/%d)", downloadTaskInfo.TotalDownloadedArchivesCount+1, downloadTaskInfo.TotalArchivesCount)
						m.LogStdout(downloadMsg, zap.String("hash", hash))
						m.LogStdout("pieces (start, end)", zap.Any("startIndex", startIndex), zap.Any("endIndex", endIndex-1))
						torrent.DownloadPieces(startIndex, endIndex)

						piecesCompleted := make(map[int]bool)
						for i = startIndex; i < endIndex; i++ {
							piecesCompleted[i] = false
						}

						psc := torrent.SubscribePieceStateChanges()
						downloadTicker := time.NewTicker(1 * time.Second)
						defer downloadTicker.Stop()

					downloadLoop:
						for {
							select {
							case <-downloadTicker.C:
								done := true
								for i = startIndex; i < endIndex; i++ {
									piecesCompleted[i] = torrent.PieceState(i).Complete
									if !piecesCompleted[i] {
										done = false
									}
								}
								if done {
									psc.Close()
									break downloadLoop
								}
							case <-cancelTask:
								m.LogStdout("downloading archive data interrupted")
								downloadTaskInfo.Cancelled = true
								return downloadTaskInfo, nil
							}
						}
						downloadTaskInfo.TotalDownloadedArchivesCount++
						err = m.persistence.SaveMessageArchiveID(communityID, hash)
						if err != nil {
							m.LogStdout("couldn't save message archive ID", zap.Error(err))
							continue
						}
						m.publish(&Subscription{
							HistoryArchiveDownloadedSignal: &signal.HistoryArchiveDownloadedSignal{
								CommunityID: communityID.String(),
								From:        int(metadata.Metadata.From),
								To:          int(metadata.Metadata.To),
							},
						})
					}
					m.publish(&Subscription{
						HistoryArchivesSeedingSignal: &signal.HistoryArchivesSeedingSignal{
							CommunityID: communityID.String(),
						},
					})
					m.LogStdout("finished downloading archives")
					return downloadTaskInfo, nil
				}
			}
		}
	}
}

func (m *Manager) GetMessageArchiveIDsToImport(communityID types.HexBytes) ([]string, error) {
	return m.persistence.GetMessageArchiveIDsToImport(communityID)
}

func (m *Manager) ExtractMessagesFromHistoryArchive(communityID types.HexBytes, archiveID string) ([]*protobuf.WakuMessage, error) {
	id := communityID.String()

	index, err := m.LoadHistoryArchiveIndexFromFile(m.identity, communityID)
	if err != nil {
		return nil, err
	}

	dataFile, err := os.Open(m.archiveDataFile(id))
	if err != nil {
		return nil, err
	}
	defer dataFile.Close()

	m.LogStdout("extracting messages from history archive", zap.String("archive id", archiveID))
	metadata := index.Archives[archiveID]

	_, err = dataFile.Seek(int64(metadata.Offset), 0)
	if err != nil {
		m.LogStdout("failed to seek archive data file", zap.Error(err))
		return nil, err
	}

	data := make([]byte, metadata.Size-metadata.Padding)
	_, err = dataFile.Read(data)
	if err != nil {
		m.LogStdout("failed failed to read archive data", zap.Error(err))
		return nil, err
	}

	archive := &protobuf.WakuMessageArchive{}

	err = proto.Unmarshal(data, archive)
	if err != nil {
		// The archive data might eb encrypted so we try to decrypt instead first
		var protocolMessage encryption.ProtocolMessage
		err := proto.Unmarshal(data, &protocolMessage)
		if err != nil {
			m.LogStdout("failed to unmarshal protocol message", zap.Error(err))
			return nil, err
		}

		pk, err := crypto.DecompressPubkey(communityID)
		if err != nil {
			m.logger.Debug("failed to decompress community pubkey", zap.Error(err))
			return nil, err
		}
		decryptedBytes, err := m.encryptor.HandleMessage(m.identity, pk, &protocolMessage, make([]byte, 0))
		if err != nil {
			m.LogStdout("failed to decrypt message archive", zap.Error(err))
			return nil, err
		}
		err = proto.Unmarshal(decryptedBytes.DecryptedMessage, archive)
		if err != nil {
			m.LogStdout("failed to unmarshal message archive data", zap.Error(err))
			return nil, err
		}
	}
	return archive.Messages, nil
}

func (m *Manager) SetMessageArchiveIDImported(communityID types.HexBytes, hash string, imported bool) error {
	return m.persistence.SetMessageArchiveIDImported(communityID, hash, imported)
}

func (m *Manager) GetHistoryArchiveMagnetlink(communityID types.HexBytes) (string, error) {
	id := communityID.String()
	torrentFile := m.torrentFile(id)

	metaInfo, err := metainfo.LoadFromFile(torrentFile)
	if err != nil {
		return "", err
	}

	info, err := metaInfo.UnmarshalInfo()
	if err != nil {
		return "", err
	}

	return metaInfo.Magnet(nil, &info).String(), nil
}

func (m *Manager) createWakuMessageArchive(from time.Time, to time.Time, messages []types.Message, topics [][]byte) *protobuf.WakuMessageArchive {
	var wakuMessages []*protobuf.WakuMessage

	for _, msg := range messages {
		topic := types.TopicTypeToByteArray(msg.Topic)
		wakuMessage := &protobuf.WakuMessage{
			Sig:          msg.Sig,
			Timestamp:    uint64(msg.Timestamp),
			Topic:        topic,
			Payload:      msg.Payload,
			Padding:      msg.Padding,
			Hash:         msg.Hash,
			ThirdPartyId: msg.ThirdPartyID,
		}
		wakuMessages = append(wakuMessages, wakuMessage)
	}

	metadata := protobuf.WakuMessageArchiveMetadata{
		From:         uint64(from.Unix()),
		To:           uint64(to.Unix()),
		ContentTopic: topics,
	}

	wakuMessageArchive := &protobuf.WakuMessageArchive{
		Metadata: &metadata,
		Messages: wakuMessages,
	}
	return wakuMessageArchive
}

func (m *Manager) LoadHistoryArchiveIndexFromFile(myKey *ecdsa.PrivateKey, communityID types.HexBytes) (*protobuf.WakuMessageArchiveIndex, error) {
	wakuMessageArchiveIndexProto := &protobuf.WakuMessageArchiveIndex{}

	indexPath := m.archiveIndexFile(communityID.String())
	indexData, err := os.ReadFile(indexPath)
	if err != nil {
		return nil, err
	}

	err = proto.Unmarshal(indexData, wakuMessageArchiveIndexProto)
	if err != nil {
		return nil, err
	}

	if len(wakuMessageArchiveIndexProto.Archives) == 0 && len(indexData) > 0 {
		// This means we're dealing with an encrypted index file, so we have to decrypt it first
		var protocolMessage encryption.ProtocolMessage
		err := proto.Unmarshal(indexData, &protocolMessage)
		if err != nil {
			return nil, err
		}
		pk, err := crypto.DecompressPubkey(communityID)
		if err != nil {
			return nil, err
		}
		decryptedBytes, err := m.encryptor.HandleMessage(myKey, pk, &protocolMessage, make([]byte, 0))
		if err != nil {
			return nil, err
		}
		err = proto.Unmarshal(decryptedBytes.DecryptedMessage, wakuMessageArchiveIndexProto)
		if err != nil {
			return nil, err
		}
	}

	return wakuMessageArchiveIndexProto, nil
}

func (m *Manager) TorrentFileExists(communityID string) bool {
	_, err := os.Stat(m.torrentFile(communityID))
	return err == nil
}

func (m *Manager) torrentFile(communityID string) string {
	return m.torrentConfig.TorrentDir + "/" + communityID + ".torrent"
}

func (m *Manager) archiveIndexFile(communityID string) string {
	return m.torrentConfig.DataDir + "/" + communityID + "/index"
}

func (m *Manager) archiveDataFile(communityID string) string {
	return m.torrentConfig.DataDir + "/" + communityID + "/data"
}

func topicsAsByteArrays(topics []types.TopicType) [][]byte {
	var topicsAsByteArrays [][]byte
	for _, t := range topics {
		topic := types.TopicTypeToByteArray(t)
		topicsAsByteArrays = append(topicsAsByteArrays, topic)
	}
	return topicsAsByteArrays
}

func findIndexFile(files []*torrent.File) (index int, ok bool) {
	for i, f := range files {
		if f.DisplayPath() == "index" {
			return i, true
		}
	}
	return 0, false
}

func (m *Manager) GetCommunityTokens(communityID string) ([]*CommunityToken, error) {
	return m.persistence.GetCommunityTokens(communityID)
}

func (m *Manager) ImageToBase64(uri string) string {
	file, err := os.Open(uri)
	if err != nil {
		m.logger.Error(err.Error())
		return ""
	}
	defer file.Close()

	payload, err := ioutil.ReadAll(file)
	if err != nil {
		m.logger.Error(err.Error())
		return ""
	}
	base64img, err := images.GetPayloadDataURI(payload)
	if err != nil {
		m.logger.Error(err.Error())
		return ""
	}
	return base64img
}

func (m *Manager) AddCommunityToken(token *CommunityToken) (*CommunityToken, error) {

	community, err := m.GetByIDString(token.CommunityID)
	if err != nil {
		return nil, err
	}
	if community == nil {
		return nil, ErrOrgNotFound
	}

	token.Base64Image = m.ImageToBase64(token.Base64Image)

	tokenMetadata := &protobuf.CommunityTokenMetadata{
		ContractAddresses: map[uint64]string{uint64(token.ChainID): token.Address},
		Description:       token.Description,
		Image:             token.Base64Image,
		Symbol:            token.Symbol,
		TokenType:         token.TokenType,
		Name:              token.Name,
	}
	_, err = community.AddCommunityTokensMetadata(tokenMetadata)
	if err != nil {
		return nil, err
	}

	err = m.persistence.SaveCommunity(community)
	if err != nil {
		return nil, err
	}

	m.publish(&Subscription{Community: community})

	return token, m.persistence.AddCommunityToken(token)
}

func (m *Manager) UpdateCommunityTokenState(contractAddress string, deployState DeployState) error {
	return m.persistence.UpdateCommunityTokenState(contractAddress, deployState)
}

func (m *Manager) SetCommunityActiveMembersCount(communityID string, activeMembersCount uint64) error {
	community, err := m.GetByIDString(communityID)
	if err != nil {
		return err
	}
	if community == nil {
		return ErrOrgNotFound
	}

	updated, err := community.SetActiveMembersCount(activeMembersCount)
	if err != nil {
		return err
	}

	if updated {
		if err = m.persistence.SaveCommunity(community); err != nil {
			return err
		}

		m.publish(&Subscription{Community: community})
	}

	return nil
}