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// Copyright (c) 2020 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package event
import (
"sync"
"go.mau.fi/util/ptr"
"golang.org/x/exp/maps"
"maunium.net/go/mautrix/id"
)
// PowerLevelsEventContent represents the content of a m.room.power_levels state event content.
// https://spec.matrix.org/v1.5/client-server-api/#mroompower_levels
type PowerLevelsEventContent struct {
usersLock sync.RWMutex
Users map[id.UserID]int `json:"users,omitempty"`
UsersDefault int `json:"users_default,omitempty"`
eventsLock sync.RWMutex
Events map[string]int `json:"events,omitempty"`
EventsDefault int `json:"events_default,omitempty"`
Notifications *NotificationPowerLevels `json:"notifications,omitempty"`
StateDefaultPtr *int `json:"state_default,omitempty"`
InvitePtr *int `json:"invite,omitempty"`
KickPtr *int `json:"kick,omitempty"`
BanPtr *int `json:"ban,omitempty"`
RedactPtr *int `json:"redact,omitempty"`
}
func (pl *PowerLevelsEventContent) Clone() *PowerLevelsEventContent {
if pl == nil {
return nil
}
return &PowerLevelsEventContent{
Users: maps.Clone(pl.Users),
UsersDefault: pl.UsersDefault,
Events: maps.Clone(pl.Events),
EventsDefault: pl.EventsDefault,
StateDefaultPtr: ptr.Clone(pl.StateDefaultPtr),
Notifications: pl.Notifications.Clone(),
InvitePtr: ptr.Clone(pl.InvitePtr),
KickPtr: ptr.Clone(pl.KickPtr),
BanPtr: ptr.Clone(pl.BanPtr),
RedactPtr: ptr.Clone(pl.RedactPtr),
}
}
type NotificationPowerLevels struct {
RoomPtr *int `json:"room,omitempty"`
}
func (npl *NotificationPowerLevels) Clone() *NotificationPowerLevels {
if npl == nil {
return nil
}
return &NotificationPowerLevels{
RoomPtr: ptr.Clone(npl.RoomPtr),
}
}
func (npl *NotificationPowerLevels) Room() int {
if npl != nil && npl.RoomPtr != nil {
return *npl.RoomPtr
}
return 50
}
func (pl *PowerLevelsEventContent) Invite() int {
if pl.InvitePtr != nil {
return *pl.InvitePtr
}
return 0
}
func (pl *PowerLevelsEventContent) Kick() int {
if pl.KickPtr != nil {
return *pl.KickPtr
}
return 50
}
func (pl *PowerLevelsEventContent) Ban() int {
if pl.BanPtr != nil {
return *pl.BanPtr
}
return 50
}
func (pl *PowerLevelsEventContent) Redact() int {
if pl.RedactPtr != nil {
return *pl.RedactPtr
}
return 50
}
func (pl *PowerLevelsEventContent) StateDefault() int {
if pl.StateDefaultPtr != nil {
return *pl.StateDefaultPtr
}
return 50
}
func (pl *PowerLevelsEventContent) GetUserLevel(userID id.UserID) int {
pl.usersLock.RLock()
defer pl.usersLock.RUnlock()
level, ok := pl.Users[userID]
if !ok {
return pl.UsersDefault
}
return level
}
func (pl *PowerLevelsEventContent) SetUserLevel(userID id.UserID, level int) {
pl.usersLock.Lock()
defer pl.usersLock.Unlock()
if level == pl.UsersDefault {
delete(pl.Users, userID)
} else {
if pl.Users == nil {
pl.Users = make(map[id.UserID]int)
}
pl.Users[userID] = level
}
}
func (pl *PowerLevelsEventContent) EnsureUserLevel(target id.UserID, level int) bool {
return pl.EnsureUserLevelAs("", target, level)
}
func (pl *PowerLevelsEventContent) EnsureUserLevelAs(actor, target id.UserID, level int) bool {
existingLevel := pl.GetUserLevel(target)
if actor != "" {
actorLevel := pl.GetUserLevel(actor)
if actorLevel <= existingLevel || actorLevel < level {
return false
}
}
if existingLevel != level {
pl.SetUserLevel(target, level)
return true
}
return false
}
func (pl *PowerLevelsEventContent) GetEventLevel(eventType Type) int {
pl.eventsLock.RLock()
defer pl.eventsLock.RUnlock()
level, ok := pl.Events[eventType.String()]
if !ok {
if eventType.IsState() {
return pl.StateDefault()
}
return pl.EventsDefault
}
return level
}
func (pl *PowerLevelsEventContent) SetEventLevel(eventType Type, level int) {
pl.eventsLock.Lock()
defer pl.eventsLock.Unlock()
if (eventType.IsState() && level == pl.StateDefault()) || (!eventType.IsState() && level == pl.EventsDefault) {
delete(pl.Events, eventType.String())
} else {
if pl.Events == nil {
pl.Events = make(map[string]int)
}
pl.Events[eventType.String()] = level
}
}
func (pl *PowerLevelsEventContent) EnsureEventLevel(eventType Type, level int) bool {
return pl.EnsureEventLevelAs("", eventType, level)
}
func (pl *PowerLevelsEventContent) EnsureEventLevelAs(actor id.UserID, eventType Type, level int) bool {
existingLevel := pl.GetEventLevel(eventType)
if actor != "" {
actorLevel := pl.GetUserLevel(actor)
if existingLevel > actorLevel || level > actorLevel {
return false
}
}
if existingLevel != level {
pl.SetEventLevel(eventType, level)
return true
}
return false
}
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