gomuks/ui/commands.go

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// gomuks - A terminal Matrix client written in Go.
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// Copyright (C) 2020 Tulir Asokan
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//
// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package ui
import (
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"encoding/json"
"fmt"
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"io"
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"math"
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"os"
"regexp"
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"runtime"
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dbg "runtime/debug"
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"runtime/pprof"
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"runtime/trace"
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"strconv"
"strings"
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"time"
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"unicode"
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"github.com/lucasb-eyer/go-colorful"
"github.com/pkg/errors"
"github.com/russross/blackfriday/v2"
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"maunium.net/go/mautrix"
"maunium.net/go/mautrix/event"
"maunium.net/go/mautrix/format"
"maunium.net/go/mautrix/id"
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"maunium.net/go/gomuks/debug"
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)
func cmdMe(cmd *Command) {
text := strings.Join(cmd.Args, " ")
go cmd.Room.SendMessage(event.MsgEmote, text)
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}
// GradientTable from https://github.com/lucasb-eyer/go-colorful/blob/master/doc/gradientgen/gradientgen.go
type GradientTable []struct {
Col colorful.Color
Pos float64
}
func (gt GradientTable) GetInterpolatedColorFor(t float64) colorful.Color {
for i := 0; i < len(gt)-1; i++ {
c1 := gt[i]
c2 := gt[i+1]
if c1.Pos <= t && t <= c2.Pos {
t := (t - c1.Pos) / (c2.Pos - c1.Pos)
return c1.Col.BlendHcl(c2.Col, t).Clamped()
}
}
return gt[len(gt)-1].Col
}
var rainbow = GradientTable{
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{colorful.LinearRgb(1, 0, 0), 0 / 11.0},
{colorful.LinearRgb(1, 0.5, 0), 1 / 11.0},
{colorful.LinearRgb(1, 1, 0), 2 / 11.0},
{colorful.LinearRgb(0.5, 1, 0), 3 / 11.0},
{colorful.LinearRgb(0, 1, 0), 4 / 11.0},
{colorful.LinearRgb(0, 1, 0.5), 5 / 11.0},
{colorful.LinearRgb(0, 1, 1), 6 / 11.0},
{colorful.LinearRgb(0, 0.5, 1), 7 / 11.0},
{colorful.LinearRgb(0, 0, 1), 8 / 11.0},
{colorful.LinearRgb(0.5, 0, 1), 9 / 11.0},
{colorful.LinearRgb(1, 0, 1), 10 / 11.0},
{colorful.LinearRgb(1, 0, 0.5), 11 / 11.0},
}
// TODO this command definitely belongs in a plugin once we have a plugin system.
func makeRainbow(cmd *Command, msgtype event.MessageType) {
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text := strings.Join(cmd.Args, " ")
render := NewRainbowRenderer(blackfriday.NewHTMLRenderer(blackfriday.HTMLRendererParameters{
Flags: blackfriday.UseXHTML,
}))
htmlBodyBytes := blackfriday.Run([]byte(text), format.Extensions, blackfriday.WithRenderer(render))
htmlBody := strings.TrimRight(string(htmlBodyBytes), "\n")
htmlBody = format.AntiParagraphRegex.ReplaceAllString(htmlBody, "$1")
text = format.HTMLToText(htmlBody)
count := strings.Count(htmlBody, render.ColorID)
i := -1
htmlBody = regexp.MustCompile(render.ColorID).ReplaceAllStringFunc(htmlBody, func(match string) string {
i++
return rainbow.GetInterpolatedColorFor(float64(i) / float64(count)).Hex()
})
go cmd.Room.SendMessageHTML(msgtype, text, htmlBody)
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}
func cmdRainbow(cmd *Command) {
makeRainbow(cmd, event.MsgText)
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}
func cmdRainbowMe(cmd *Command) {
makeRainbow(cmd, event.MsgEmote)
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}
func cmdNotice(cmd *Command) {
go cmd.Room.SendMessage(event.MsgNotice, strings.Join(cmd.Args, " "))
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}
func cmdAccept(cmd *Command) {
room := cmd.Room.MxRoom()
if room.SessionMember.Membership != "invite" {
cmd.Reply("/accept can only be used in rooms you're invited to")
return
}
_, server, _ := room.SessionMember.Sender.Parse()
_, err := cmd.Matrix.JoinRoom(room.ID, server)
if err != nil {
cmd.Reply("Failed to accept invite: %v", err)
} else {
cmd.Reply("Successfully accepted invite")
}
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cmd.MainView.UpdateTags(room)
go cmd.MainView.LoadHistory(room.ID)
}
func cmdReject(cmd *Command) {
room := cmd.Room.MxRoom()
if room.SessionMember.Membership != "invite" {
cmd.Reply("/reject can only be used in rooms you're invited to")
return
}
err := cmd.Matrix.LeaveRoom(room.ID)
if err != nil {
cmd.Reply("Failed to reject invite: %v", err)
} else {
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cmd.Reply("Successfully rejected invite")
}
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cmd.MainView.RemoveRoom(room)
}
func cmdID(cmd *Command) {
cmd.Reply("The internal ID of this room is %s", cmd.Room.MxRoom().ID)
}
type SelectReason string
const (
SelectReply SelectReason = "reply to"
SelectReact = "react to"
SelectRedact = "redact"
SelectDownload = "download"
SelectOpen = "open"
SelectCopy = "copy"
)
func cmdReply(cmd *Command) {
cmd.Room.StartSelecting(SelectReply, strings.Join(cmd.Args, " "))
}
func cmdRedact(cmd *Command) {
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cmd.Room.StartSelecting(SelectRedact, strings.Join(cmd.Args, " "))
}
func cmdDownload(cmd *Command) {
cmd.Room.StartSelecting(SelectDownload, strings.Join(cmd.Args, " "))
}
func cmdOpen(cmd *Command) {
cmd.Room.StartSelecting(SelectOpen, strings.Join(cmd.Args, " "))
}
func cmdCopy(cmd *Command) {
register := strings.Join(cmd.Args, " ")
if len(register) == 0 {
register = "clipboard"
}
if register == "clipboard" || register == "primary" {
cmd.Room.StartSelecting(SelectCopy, register)
} else {
cmd.Reply("Usage: /copy [register], where register is either \"clipboard\" or \"primary\". Defaults to \"clipboard\".")
}
}
func cmdReact(cmd *Command) {
if len(cmd.Args) == 0 {
cmd.Reply("Usage: /react <reaction>")
return
}
cmd.Room.StartSelecting(SelectReact, strings.Join(cmd.Args, " "))
}
func readRoomAlias(cmd *Command) (alias id.RoomAlias, err error) {
param := strings.Join(cmd.Args[1:], " ")
if strings.ContainsRune(param, ':') {
if param[0] != '#' {
return "", errors.New("Full aliases must start with #")
}
alias = id.RoomAlias(param)
} else {
_, homeserver, _ := cmd.Matrix.Client().UserID.Parse()
alias = id.NewRoomAlias(param, homeserver)
}
return
}
func cmdAlias(cmd *Command) {
if len(cmd.Args) < 2 {
cmd.Reply("Usage: /alias <add|remove> <localpart>")
return
}
alias, err := readRoomAlias(cmd)
if err != nil {
cmd.Reply(err.Error())
return
}
subcmd := strings.ToLower(cmd.Args[0])
switch subcmd {
case "add", "create":
cmdAddAlias(cmd, alias)
case "remove", "delete", "del", "rm":
cmdRemoveAlias(cmd, alias)
case "resolve", "get":
cmdResolveAlias(cmd, alias)
default:
cmd.Reply("Usage: /alias <add|remove|resolve> <localpart>")
}
}
func niceError(err error) string {
httpErr, ok := err.(mautrix.HTTPError)
if ok && httpErr.RespError != nil {
return httpErr.RespError.Error()
}
return err.Error()
}
func cmdAddAlias(cmd *Command, alias id.RoomAlias) {
_, err := cmd.Matrix.Client().CreateAlias(alias, cmd.Room.MxRoom().ID)
if err != nil {
cmd.Reply("Failed to create alias: %v", niceError(err))
} else {
cmd.Reply("Created alias %s", alias)
}
}
func cmdRemoveAlias(cmd *Command, alias id.RoomAlias) {
_, err := cmd.Matrix.Client().DeleteAlias(alias)
if err != nil {
cmd.Reply("Failed to delete alias: %v", niceError(err))
} else {
cmd.Reply("Deleted alias %s", alias)
}
}
func cmdResolveAlias(cmd *Command, alias id.RoomAlias) {
resp, err := cmd.Matrix.Client().ResolveAlias(alias)
if err != nil {
cmd.Reply("Failed to resolve alias: %v", niceError(err))
} else {
roomIDText := string(resp.RoomID)
if resp.RoomID == cmd.Room.MxRoom().ID {
roomIDText += " (this room)"
}
cmd.Reply("Alias %s points to room %s\nThere are %d servers in the room.", alias, roomIDText, len(resp.Servers))
}
}
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func cmdTags(cmd *Command) {
tags := cmd.Room.MxRoom().RawTags
if len(cmd.Args) > 0 && cmd.Args[0] == "--internal" {
tags = cmd.Room.MxRoom().Tags()
}
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if len(tags) == 0 {
if cmd.Room.MxRoom().IsDirect {
cmd.Reply("This room has no tags, but it's marked as a direct chat.")
} else {
cmd.Reply("This room has no tags.")
}
return
}
var resp strings.Builder
resp.WriteString("Tags in this room:\n")
for _, tag := range tags {
if tag.Order != "" {
_, _ = fmt.Fprintf(&resp, "%s (order: %s)\n", tag.Tag, tag.Order)
} else {
_, _ = fmt.Fprintf(&resp, "%s (no order)\n", tag.Tag)
}
}
cmd.Reply(strings.TrimSpace(resp.String()))
}
func cmdTag(cmd *Command) {
if len(cmd.Args) == 0 {
cmd.Reply("Usage: /tag <tag> [order]")
return
}
order := math.NaN()
if len(cmd.Args) > 1 {
var err error
order, err = strconv.ParseFloat(cmd.Args[1], 64)
if err != nil {
cmd.Reply("%s is not a valid order: %v", cmd.Args[1], err)
return
}
}
var err error
if len(cmd.Args) > 2 && cmd.Args[2] == "--reset" {
tags := event.Tags{
cmd.Args[0]: {Order: json.Number(fmt.Sprintf("%f", order))},
}
for _, tag := range cmd.Room.MxRoom().RawTags {
tags[tag.Tag] = event.Tag{Order: tag.Order}
}
err = cmd.Matrix.Client().SetTags(cmd.Room.MxRoom().ID, tags)
} else {
err = cmd.Matrix.Client().AddTag(cmd.Room.MxRoom().ID, cmd.Args[0], order)
}
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if err != nil {
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cmd.Reply("Failed to add tag: %v", err)
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}
}
func cmdUntag(cmd *Command) {
if len(cmd.Args) == 0 {
cmd.Reply("Usage: /untag <tag>")
return
}
err := cmd.Matrix.Client().RemoveTag(cmd.Room.MxRoom().ID, cmd.Args[0])
if err != nil {
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cmd.Reply("Failed to remove tag: %v", err)
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}
}
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func cmdRoomNick(cmd *Command) {
room := cmd.Room.MxRoom()
member := room.GetMember(room.SessionUserID)
member.Displayname = strings.Join(cmd.Args, " ")
_, err := cmd.Matrix.Client().SendStateEvent(room.ID, event.StateMember, string(room.SessionUserID), member)
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if err != nil {
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cmd.Reply("Failed to set room nick: %v", err)
}
}
func cmdFingerprint(cmd *Command) {
c := cmd.Matrix.Crypto()
if c == nil {
cmd.Reply("Encryption support is not enabled")
} else {
cmd.Reply("Device ID: %s\nFingerprint: %s", cmd.Matrix.Client().DeviceID, c.Fingerprint())
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}
}
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func cmdHeapProfile(cmd *Command) {
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if len(cmd.Args) == 0 || cmd.Args[0] != "nogc" {
runtime.GC()
dbg.FreeOSMemory()
}
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memProfile, err := os.Create("gomuks.heap.prof")
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if err != nil {
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debug.Print("Failed to open gomuks.heap.prof:", err)
return
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}
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defer func() {
err := memProfile.Close()
if err != nil {
debug.Print("Failed to close gomuks.heap.prof:", err)
}
}()
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if err := pprof.WriteHeapProfile(memProfile); err != nil {
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debug.Print("Heap profile error:", err)
}
}
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func runTimedProfile(cmd *Command, start func(writer io.Writer) error, stop func(), task, file string) {
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if len(cmd.Args) == 0 {
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cmd.Reply("Usage: /%s <seconds>", cmd.Command)
} else if dur, err := strconv.Atoi(cmd.Args[0]); err != nil || dur < 0 {
cmd.Reply("Usage: /%s <seconds>", cmd.Command)
} else if cpuProfile, err := os.Create(file); err != nil {
debug.Printf("Failed to open %s: %v", file, err)
} else if err = start(cpuProfile); err != nil {
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_ = cpuProfile.Close()
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debug.Print(task, "error:", err)
} else {
cmd.Reply("Started %s for %d seconds", task, dur)
go func() {
time.Sleep(time.Duration(dur) * time.Second)
stop()
cmd.Reply("%s finished.", task)
err := cpuProfile.Close()
if err != nil {
debug.Print("Failed to close gomuks.cpu.prof:", err)
}
}()
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}
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}
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func cmdCPUProfile(cmd *Command) {
runTimedProfile(cmd, pprof.StartCPUProfile, pprof.StopCPUProfile, "CPU profiling", "gomuks.cpu.prof")
}
func cmdTrace(cmd *Command) {
runTimedProfile(cmd, trace.Start, trace.Stop, "Call tracing", "gomuks.trace")
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}
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func cmdQuit(cmd *Command) {
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cmd.Gomuks.Stop(true)
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}
func cmdClearCache(cmd *Command) {
cmd.Config.Clear()
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cmd.Gomuks.Stop(false)
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}
func cmdUnknownCommand(cmd *Command) {
cmd.Reply("Unknown command \"%s\". Try \"/help\" for help.", cmd.Command)
}
func cmdHelp(cmd *Command) {
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cmd.Reply(`# General
/help - Show this "temporary" help message.
/quit - Quit gomuks.
/clearcache - Clear cache and quit gomuks.
/logout - Log out of Matrix.
/toggle <thing> - Temporary command to toggle various UI features.
Things: rooms, users, baremessages, images, typingnotif
# Sending special messages
/me <message> - Send an emote message.
/notice <message> - Send a notice (generally used for bot messages).
/rainbow <message> - Send rainbow text (markdown not supported).
/rainbowme <message> - Send rainbow text in an emote.
/reply [text] - Reply to the selected message.
/react <reaction> - React to the selected message.
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/redact [reason] - Redact the selected message.
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# Rooms
/pm <user id> <...> - Create a private chat with the given user(s).
/create [room name] - Create a room.
/join <room> [server] - Join a room.
/accept - Accept the invite.
/reject - Reject the invite.
/invite <user id> - Invite the given user to the room.
/roomnick <name> - Change your per-room displayname.
/tag <tag> <priority> - Add the room to <tag>.
/untag <tag> - Remove the room from <tag>.
/tags - List the tags the room is in.
/alias <act> <name> - Add or remove local addresses.
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/leave - Leave the current room.
/kick <user id> [reason] - Kick a user.
/ban <user id> [reason] - Ban a user.
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/unban <user id> - Unban a user.`)
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}
func cmdLeave(cmd *Command) {
err := cmd.Matrix.LeaveRoom(cmd.Room.MxRoom().ID)
debug.Print("Leave room error:", err)
if err == nil {
cmd.MainView.RemoveRoom(cmd.Room.MxRoom())
}
}
func cmdInvite(cmd *Command) {
if len(cmd.Args) != 1 {
cmd.Reply("Usage: /invite <user id>")
return
}
_, err := cmd.Matrix.Client().InviteUser(cmd.Room.MxRoom().ID, &mautrix.ReqInviteUser{UserID: id.UserID(cmd.Args[0])})
if err != nil {
debug.Print("Error in invite call:", err)
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cmd.Reply("Failed to invite user: %v", err)
}
}
func cmdBan(cmd *Command) {
if len(cmd.Args) < 1 {
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cmd.Reply("Usage: /ban <user> [reason]")
return
}
reason := "you are the weakest link, goodbye!"
if len(cmd.Args) >= 2 {
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reason = strings.Join(cmd.Args[1:], " ")
}
_, err := cmd.Matrix.Client().BanUser(cmd.Room.MxRoom().ID, &mautrix.ReqBanUser{Reason: reason, UserID: id.UserID(cmd.Args[0])})
if err != nil {
debug.Print("Error in ban call:", err)
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cmd.Reply("Failed to ban user: %v", err)
}
}
func cmdUnban(cmd *Command) {
if len(cmd.Args) != 1 {
cmd.Reply("Usage: /unban <user>")
return
}
_, err := cmd.Matrix.Client().UnbanUser(cmd.Room.MxRoom().ID, &mautrix.ReqUnbanUser{UserID: id.UserID(cmd.Args[0])})
if err != nil {
debug.Print("Error in unban call:", err)
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cmd.Reply("Failed to unban user: %v", err)
}
}
func cmdKick(cmd *Command) {
if len(cmd.Args) < 1 {
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cmd.Reply("Usage: /kick <user> [reason]")
return
}
reason := "you are the weakest link, goodbye!"
if len(cmd.Args) >= 2 {
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reason = strings.Join(cmd.Args[1:], " ")
}
_, err := cmd.Matrix.Client().KickUser(cmd.Room.MxRoom().ID, &mautrix.ReqKickUser{Reason: reason, UserID: id.UserID(cmd.Args[0])})
if err != nil {
debug.Print("Error in kick call:", err)
debug.Print("Failed to kick user:", err)
}
}
func cmdCreateRoom(cmd *Command) {
req := &mautrix.ReqCreateRoom{}
if len(cmd.Args) > 0 {
req.Name = strings.Join(cmd.Args, " ")
}
room, err := cmd.Matrix.CreateRoom(req)
if err != nil {
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cmd.Reply("Failed to create room: %v", err)
return
}
cmd.MainView.SwitchRoom("", room)
}
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func cmdPrivateMessage(cmd *Command) {
if len(cmd.Args) == 0 {
cmd.Reply("Usage: /pm <user id> [more user ids...]")
}
invites := make([]id.UserID, len(cmd.Args))
for i, userID := range cmd.Args {
invites[i] = id.UserID(userID)
_, _, err := invites[i].Parse()
if err != nil {
cmd.Reply("%s isn't a valid user ID", userID)
return
}
}
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req := &mautrix.ReqCreateRoom{
Preset: "trusted_private_chat",
Invite: invites,
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}
room, err := cmd.Matrix.CreateRoom(req)
if err != nil {
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cmd.Reply("Failed to create room: %v", err)
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return
}
cmd.MainView.SwitchRoom("", room)
}
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func cmdJoin(cmd *Command) {
if len(cmd.Args) == 0 {
cmd.Reply("Usage: /join <room>")
return
}
identifer := id.RoomID(cmd.Args[0])
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server := ""
if len(cmd.Args) > 1 {
server = cmd.Args[1]
}
room, err := cmd.Matrix.JoinRoom(identifer, server)
debug.Print("Join room error:", err)
if err == nil {
cmd.MainView.AddRoom(room)
}
}
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func cmdMSendEvent(cmd *Command) {
if len(cmd.Args) < 2 {
cmd.Reply("Usage: /msend <event type> <content>")
return
}
cmd.Args = append([]string{string(cmd.Room.MxRoom().ID)}, cmd.Args...)
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cmdSendEvent(cmd)
}
func cmdSendEvent(cmd *Command) {
if len(cmd.Args) < 3 {
cmd.Reply("Usage: /send <room id> <event type> <content>")
return
}
roomID := id.RoomID(cmd.Args[0])
eventType := event.NewEventType(cmd.Args[1])
rawContent := strings.Join(cmd.Args[2:], " ")
var content interface{}
err := json.Unmarshal([]byte(rawContent), &content)
debug.Print(err)
if err != nil {
cmd.Reply("Failed to parse content: %v", err)
return
}
debug.Print("Sending event to", roomID, eventType, content)
resp, err := cmd.Matrix.Client().SendMessageEvent(roomID, eventType, content)
debug.Print(resp, err)
if err != nil {
cmd.Reply("Error from server: %v", err)
} else {
cmd.Reply("Event sent, ID: %s", resp.EventID)
}
}
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func cmdMSetState(cmd *Command) {
if len(cmd.Args) < 2 {
cmd.Reply("Usage: /msetstate <event type> <state key> <content>")
return
}
cmd.Args = append([]string{string(cmd.Room.MxRoom().ID)}, cmd.Args...)
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cmdSetState(cmd)
}
func cmdSetState(cmd *Command) {
if len(cmd.Args) < 4 {
cmd.Reply("Usage: /setstate <room id> <event type> <state key/`-`> <content>")
return
}
roomID := id.RoomID(cmd.Args[0])
eventType := event.NewEventType(cmd.Args[1])
stateKey := cmd.Args[2]
if stateKey == "-" {
stateKey = ""
}
rawContent := strings.Join(cmd.Args[3:], " ")
var content interface{}
err := json.Unmarshal([]byte(rawContent), &content)
if err != nil {
cmd.Reply("Failed to parse content: %v", err)
return
}
debug.Print("Sending state event to", roomID, eventType, stateKey, content)
resp, err := cmd.Matrix.Client().SendStateEvent(roomID, eventType, stateKey, content)
if err != nil {
cmd.Reply("Error from server: %v", err)
} else {
cmd.Reply("State event sent, ID: %s", resp.EventID)
}
}
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type ToggleMessage interface {
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Name() string
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Format(state bool) string
}
type HideMessage string
func (hm HideMessage) Format(state bool) string {
if state {
return string(hm) + " is now hidden"
} else {
return string(hm) + " is now visible"
}
}
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func (hm HideMessage) Name() string {
return string(hm)
}
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type SimpleToggleMessage string
func (stm SimpleToggleMessage) Format(state bool) string {
if state {
return "Disabled " + string(stm)
} else {
return "Enabled " + string(stm)
}
}
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func (stm SimpleToggleMessage) Name() string {
return string(unicode.ToUpper(rune(stm[0]))) + string(stm[1:])
}
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var toggleMsg = map[string]ToggleMessage{
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"rooms": HideMessage("Room list sidebar"),
"users": HideMessage("User list sidebar"),
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"baremessages": SimpleToggleMessage("bare message view"),
"images": SimpleToggleMessage("image rendering"),
"typingnotif": SimpleToggleMessage("typing notifications"),
"emojis": SimpleToggleMessage("emoji shortcode conversion"),
"html": SimpleToggleMessage("HTML input"),
"markdown": SimpleToggleMessage("markdown input"),
"downloads": SimpleToggleMessage("automatic downloads"),
"notifications": SimpleToggleMessage("desktop notifications"),
}
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func makeUsage() string {
var buf strings.Builder
buf.WriteString("Usage: /toggle <things...>\n\n")
buf.WriteString("List of Things:\n")
for key, value := range toggleMsg {
_, _ = fmt.Fprintf(&buf, "* %s - %s\n", key, value.Name())
}
return buf.String()[:buf.Len()-1]
}
func cmdToggle(cmd *Command) {
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if len(cmd.Args) == 0 {
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cmd.Reply(makeUsage())
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return
}
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for _, thing := range cmd.Args {
var val *bool
switch thing {
case "rooms":
val = &cmd.Config.Preferences.HideRoomList
case "users":
val = &cmd.Config.Preferences.HideUserList
case "baremessages":
val = &cmd.Config.Preferences.BareMessageView
case "images":
val = &cmd.Config.Preferences.DisableImages
case "typingnotif":
val = &cmd.Config.Preferences.DisableTypingNotifs
case "emojis":
val = &cmd.Config.Preferences.DisableEmojis
case "html":
val = &cmd.Config.Preferences.DisableHTML
case "markdown":
val = &cmd.Config.Preferences.DisableMarkdown
case "downloads":
val = &cmd.Config.Preferences.DisableDownloads
case "notifications":
val = &cmd.Config.Preferences.DisableNotifications
default:
cmd.Reply("Unknown toggle %s. Use /toggle without arguments for a list of togglable things.", thing)
return
}
*val = !(*val)
debug.Print(thing, *val)
cmd.Reply(toggleMsg[thing].Format(*val))
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}
cmd.UI.Render()
go cmd.Matrix.SendPreferencesToMatrix()
}
func cmdLogout(cmd *Command) {
cmd.Matrix.Logout()
}