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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2019 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// 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
// GNU Affero General Public License for more details.
//
// 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/>.
package parser
import (
"fmt"
"html"
"strings"
"time"
"maunium.net/go/gomuks/debug"
"maunium.net/go/gomuks/interface"
"maunium.net/go/gomuks/matrix/rooms"
"maunium.net/go/gomuks/ui/messages"
"maunium.net/go/gomuks/ui/messages/tstring"
"maunium.net/go/gomuks/ui/widget"
"maunium.net/go/mautrix"
"maunium.net/go/tcell"
)
func ParseEvent(matrix ifc.MatrixContainer, room *rooms.Room, evt *mautrix.Event) messages.UIMessage {
switch evt.Type {
case mautrix.EventSticker:
evt.Content.MsgType = mautrix.MsgImage
fallthrough
case mautrix.EventMessage:
return ParseMessage(matrix, room, evt)
case mautrix.StateTopic, mautrix.StateRoomName, mautrix.StateAliases, mautrix.StateCanonicalAlias:
return ParseStateEvent(matrix, room, evt)
case mautrix.StateMember:
return ParseMembershipEvent(room, evt)
}
return nil
}
func unixToTime(unix int64) time.Time {
timestamp := time.Now()
if unix != 0 {
timestamp = time.Unix(unix/1000, unix%1000*1000)
}
return timestamp
}
func ParseStateEvent(matrix ifc.MatrixContainer, room *rooms.Room, evt *mautrix.Event) messages.UIMessage {
displayname := evt.Sender
member := room.GetMember(evt.Sender)
if member != nil {
displayname = member.Displayname
}
text := tstring.NewColorTString(displayname, widget.GetHashColor(evt.Sender))
switch evt.Type {
case mautrix.StateTopic:
if len(evt.Content.Topic) == 0 {
text = text.AppendColor(" removed the topic.", tcell.ColorGreen)
} else {
text = text.AppendColor(" changed the topic to ", tcell.ColorGreen).
AppendStyle(evt.Content.Topic, tcell.StyleDefault.Underline(true)).
AppendColor(".", tcell.ColorGreen)
}
case mautrix.StateRoomName:
if len(evt.Content.Name) == 0 {
text = text.AppendColor(" removed the room name.", tcell.ColorGreen)
} else {
text = text.AppendColor(" changed the room name to ", tcell.ColorGreen).
AppendStyle(evt.Content.Name, tcell.StyleDefault.Underline(true)).
AppendColor(".", tcell.ColorGreen)
}
case mautrix.StateCanonicalAlias:
if len(evt.Content.Alias) == 0 {
text = text.AppendColor(" removed the main address of the room.", tcell.ColorGreen)
} else {
text = text.AppendColor(" changed the main address of the room to ", tcell.ColorGreen).
AppendStyle(evt.Content.Alias, tcell.StyleDefault.Underline(true)).
AppendColor(".", tcell.ColorGreen)
}
case mautrix.StateAliases:
text = ParseAliasEvent(evt, displayname)
}
ts := unixToTime(evt.Timestamp)
return messages.NewExpandedTextMessage(evt.ID, evt.Sender, displayname, mautrix.MessageType(evt.Type.Type), text, ts)
}
func ParseMessage(matrix ifc.MatrixContainer, room *rooms.Room, evt *mautrix.Event) messages.UIMessage {
displayname := evt.Sender
member := room.GetMember(evt.Sender)
if member != nil {
displayname = member.Displayname
}
if len(evt.Content.GetReplyTo()) > 0 {
evt.Content.RemoveReplyFallback()
replyToEvt, _ := matrix.Client().GetEvent(room.ID, evt.Content.GetReplyTo())
replyToEvt.Content.RemoveReplyFallback()
if len(replyToEvt.Content.FormattedBody) == 0 {
replyToEvt.Content.FormattedBody = html.EscapeString(replyToEvt.Content.Body)
}
evt.Content.FormattedBody = fmt.Sprintf(
"In reply to <a href='https://matrix.to/#/%[1]s'>%[1]s</a><blockquote>%[2]s</blockquote><br/>%[3]s",
replyToEvt.Sender, replyToEvt.Content.FormattedBody, evt.Content.FormattedBody)
}
ts := unixToTime(evt.Timestamp)
switch evt.Content.MsgType {
case "m.text", "m.notice", "m.emote":
if evt.Content.Format == mautrix.FormatHTML {
text := ParseHTMLMessage(room, evt, displayname)
return messages.NewExpandedTextMessage(evt.ID, evt.Sender, displayname, evt.Content.MsgType, text, ts)
}
evt.Content.Body = strings.Replace(evt.Content.Body, "\t", " ", -1)
return messages.NewTextMessage(evt.ID, evt.Sender, displayname, evt.Content.MsgType, evt.Content.Body, ts)
case "m.image":
data, hs, id, err := matrix.Download(evt.Content.URL)
if err != nil {
debug.Printf("Failed to download %s: %v", evt.Content.URL, err)
}
return messages.NewImageMessage(matrix, evt.ID, evt.Sender, displayname, evt.Content.MsgType, evt.Content.Body, hs, id, data, ts)
}
return nil
}
func getMembershipChangeMessage(evt *mautrix.Event, membership, prevMembership mautrix.Membership, senderDisplayname, displayname, prevDisplayname string) (sender string, text tstring.TString) {
switch membership {
case "invite":
sender = "---"
text = tstring.NewColorTString(fmt.Sprintf("%s invited %s.", senderDisplayname, displayname), tcell.ColorGreen)
text.Colorize(0, len(senderDisplayname), widget.GetHashColor(evt.Sender))
text.Colorize(len(senderDisplayname)+len(" invited "), len(displayname), widget.GetHashColor(*evt.StateKey))
case "join":
sender = "-->"
text = tstring.NewColorTString(fmt.Sprintf("%s joined the room.", displayname), tcell.ColorGreen)
text.Colorize(0, len(displayname), widget.GetHashColor(*evt.StateKey))
case "leave":
sender = "<--"
if evt.Sender != *evt.StateKey {
if prevMembership == mautrix.MembershipBan {
text = tstring.NewColorTString(fmt.Sprintf("%s unbanned %s", senderDisplayname, displayname), tcell.ColorGreen)
text.Colorize(len(senderDisplayname)+len(" unbanned "), len(displayname), widget.GetHashColor(*evt.StateKey))
} else {
text = tstring.NewColorTString(fmt.Sprintf("%s kicked %s: %s", senderDisplayname, displayname, evt.Content.Reason), tcell.ColorRed)
text.Colorize(len(senderDisplayname)+len(" kicked "), len(displayname), widget.GetHashColor(*evt.StateKey))
}
text.Colorize(0, len(senderDisplayname), widget.GetHashColor(evt.Sender))
} else {
if displayname == *evt.StateKey {
displayname = prevDisplayname
}
text = tstring.NewColorTString(fmt.Sprintf("%s left the room.", displayname), tcell.ColorRed)
text.Colorize(0, len(displayname), widget.GetHashColor(*evt.StateKey))
}
case "ban":
text = tstring.NewColorTString(fmt.Sprintf("%s banned %s: %s", senderDisplayname, displayname, evt.Content.Reason), tcell.ColorRed)
text.Colorize(len(senderDisplayname)+len(" banned "), len(displayname), widget.GetHashColor(*evt.StateKey))
text.Colorize(0, len(senderDisplayname), widget.GetHashColor(evt.Sender))
}
return
}
func getMembershipEventContent(room *rooms.Room, evt *mautrix.Event) (sender string, text tstring.TString) {
member := room.GetMember(evt.Sender)
senderDisplayname := evt.Sender
if member != nil {
senderDisplayname = member.Displayname
}
membership := evt.Content.Membership
displayname := evt.Content.Displayname
if len(displayname) == 0 {
displayname = *evt.StateKey
}
prevMembership := mautrix.MembershipLeave
prevDisplayname := *evt.StateKey
if evt.Unsigned.PrevContent != nil {
prevMembership = evt.Unsigned.PrevContent.Membership
prevDisplayname = evt.Unsigned.PrevContent.Displayname
if len(prevDisplayname) == 0 {
prevDisplayname = *evt.StateKey
}
}
if membership != prevMembership {
sender, text = getMembershipChangeMessage(evt, membership, prevMembership, senderDisplayname, displayname, prevDisplayname)
} else if displayname != prevDisplayname {
sender = "---"
color := widget.GetHashColor(*evt.StateKey)
text = tstring.NewBlankTString().
AppendColor(prevDisplayname, color).
AppendColor(" changed their display name to ", tcell.ColorGreen).
AppendColor(displayname, color).
AppendColor(".", tcell.ColorGreen)
}
return
}
func ParseMembershipEvent(room *rooms.Room, evt *mautrix.Event) messages.UIMessage {
displayname, text := getMembershipEventContent(room, evt)
if len(text) == 0 {
return nil
}
ts := unixToTime(evt.Timestamp)
return messages.NewExpandedTextMessage(evt.ID, evt.Sender, displayname, "m.room.member", text, ts)
}
func ParseAliasEvent(evt *mautrix.Event, displayname string) tstring.TString {
var prevAliases []string
if evt.Unsigned.PrevContent != nil {
prevAliases = evt.Unsigned.PrevContent.Aliases
}
aliases := evt.Content.Aliases
var added, removed []tstring.TString
Outer1:
for _, oldAlias := range prevAliases {
for _, newAlias := range aliases {
if oldAlias == newAlias {
continue Outer1
}
}
removed = append(removed, tstring.NewStyleTString(oldAlias, tcell.StyleDefault.Foreground(widget.GetHashColor(oldAlias)).Underline(true)))
}
Outer2:
for _, newAlias := range aliases {
for _, oldAlias := range prevAliases {
if oldAlias == newAlias {
continue Outer2
}
}
added = append(added, tstring.NewStyleTString(newAlias, tcell.StyleDefault.Foreground(widget.GetHashColor(newAlias)).Underline(true)))
}
var addedStr, removedStr tstring.TString
if len(added) == 1 {
addedStr = added[0]
} else if len(added) > 1 {
addedStr = tstring.
Join(added[:len(added)-1], ", ").
Append(" and ").
AppendTString(added[len(added)-1])
}
if len(removed) == 1 {
removedStr = removed[0]
} else if len(removed) > 1 {
removedStr = tstring.
Join(removed[:len(removed)-1], ", ").
Append(" and ").
AppendTString(removed[len(removed)-1])
}
text := tstring.NewBlankTString()
if len(addedStr) > 0 && len(removedStr) > 0 {
text = text.AppendColor(fmt.Sprintf("%s added ", displayname), tcell.ColorGreen).
AppendTString(addedStr).
AppendColor(" and removed ", tcell.ColorGreen).
AppendTString(removedStr).
AppendColor(" as addresses for this room.", tcell.ColorGreen)
} else if len(addedStr) > 0 {
text = text.AppendColor(fmt.Sprintf("%s added ", displayname), tcell.ColorGreen).
AppendTString(addedStr).
AppendColor(" as addresses for this room.", tcell.ColorGreen)
} else if len(removedStr) > 0 {
text = text.AppendColor(fmt.Sprintf("%s removed ", displayname), tcell.ColorGreen).
AppendTString(removedStr).
AppendColor(" as addresses for this room.", tcell.ColorGreen)
} else {
return nil
}
return text
}
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