315 lines
12 KiB
Go
315 lines
12 KiB
Go
// gomuks - A terminal Matrix client written in Go.
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// Copyright (C) 2020 Tulir Asokan
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//
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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
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// 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
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package messages
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import (
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"fmt"
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"strings"
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"go.mau.fi/tcell"
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"maunium.net/go/mautrix/event"
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"maunium.net/go/mautrix/id"
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"maunium.net/go/gomuks/debug"
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ifc "maunium.net/go/gomuks/interface"
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"maunium.net/go/gomuks/matrix/muksevt"
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"maunium.net/go/gomuks/matrix/rooms"
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"maunium.net/go/gomuks/ui/messages/html"
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"maunium.net/go/gomuks/ui/messages/tstring"
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"maunium.net/go/gomuks/ui/widget"
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)
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func getCachedEvent(mainView ifc.MainView, roomID id.RoomID, eventID id.EventID) *UIMessage {
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if roomView := mainView.GetRoom(roomID); roomView != nil {
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if replyToIfcMsg := roomView.GetEvent(eventID); replyToIfcMsg != nil {
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if replyToMsg, ok := replyToIfcMsg.(*UIMessage); ok && replyToMsg != nil {
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return replyToMsg
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}
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}
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}
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return nil
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}
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func ParseEvent(matrix ifc.MatrixContainer, mainView ifc.MainView, room *rooms.Room, evt *muksevt.Event) *UIMessage {
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msg := directParseEvent(matrix, room, evt)
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if msg == nil {
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return nil
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}
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if content, ok := evt.Content.Parsed.(*event.MessageEventContent); ok && len(content.GetReplyTo()) > 0 {
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if replyToMsg := getCachedEvent(mainView, room.ID, content.GetReplyTo()); replyToMsg != nil {
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msg.ReplyTo = replyToMsg.Clone()
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} else if replyToEvt, _ := matrix.GetEvent(room, content.GetReplyTo()); replyToEvt != nil {
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if replyToMsg = directParseEvent(matrix, room, replyToEvt); replyToMsg != nil {
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msg.ReplyTo = replyToMsg
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msg.ReplyTo.Reactions = nil
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} else {
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// TODO add unrenderable reply header
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}
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} else {
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// TODO add unknown reply header
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}
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}
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return msg
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}
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func directParseEvent(matrix ifc.MatrixContainer, room *rooms.Room, evt *muksevt.Event) *UIMessage {
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displayname := string(evt.Sender)
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member := room.GetMember(evt.Sender)
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if member != nil {
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displayname = member.Displayname
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}
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if evt.Unsigned.RedactedBecause != nil || evt.Type == event.EventRedaction {
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return NewRedactedMessage(evt, displayname)
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}
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switch content := evt.Content.Parsed.(type) {
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case *event.MessageEventContent:
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if evt.Type == event.EventSticker {
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content.MsgType = event.MsgImage
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}
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return ParseMessage(matrix, room, evt, displayname)
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case *muksevt.BadEncryptedContent:
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return NewExpandedTextMessage(evt, displayname, tstring.NewStyleTString(content.Reason, tcell.StyleDefault.Italic(true)))
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case *muksevt.EncryptionUnsupportedContent:
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return NewExpandedTextMessage(evt, displayname, tstring.NewStyleTString("gomuks not built with encryption support", tcell.StyleDefault.Italic(true)))
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case *event.TopicEventContent, *event.RoomNameEventContent, *event.CanonicalAliasEventContent:
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return ParseStateEvent(evt, displayname)
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case *event.MemberEventContent:
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return ParseMembershipEvent(room, evt)
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default:
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debug.Printf("Unknown event content type %T in directParseEvent", content)
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return nil
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}
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}
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func findAltAliasDifference(newList, oldList []id.RoomAlias) (addedStr, removedStr tstring.TString) {
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var addedList, removedList []tstring.TString
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OldLoop:
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for _, oldAlias := range oldList {
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for _, newAlias := range newList {
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if oldAlias == newAlias {
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continue OldLoop
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}
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}
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removedList = append(removedList, tstring.NewStyleTString(string(oldAlias), tcell.StyleDefault.Foreground(widget.GetHashColor(oldAlias)).Underline(true)))
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}
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NewLoop:
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for _, newAlias := range newList {
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for _, oldAlias := range oldList {
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if newAlias == oldAlias {
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continue NewLoop
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}
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}
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addedList = append(addedList, tstring.NewStyleTString(string(newAlias), tcell.StyleDefault.Foreground(widget.GetHashColor(newAlias)).Underline(true)))
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}
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if len(addedList) == 1 {
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addedStr = tstring.NewColorTString("added alternative address ", tcell.ColorGreen).AppendTString(addedList[0])
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} else if len(addedList) != 0 {
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addedStr = tstring.
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Join(addedList[:len(addedList)-1], ", ").
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PrependColor("added alternative addresses ", tcell.ColorGreen).
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AppendColor(" and ", tcell.ColorGreen).
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AppendTString(addedList[len(addedList)-1])
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}
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if len(removedList) == 1 {
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removedStr = tstring.NewColorTString("removed alternative address ", tcell.ColorGreen).AppendTString(removedList[0])
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} else if len(removedList) != 0 {
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removedStr = tstring.
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Join(removedList[:len(removedList)-1], ", ").
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PrependColor("removed alternative addresses ", tcell.ColorGreen).
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AppendColor(" and ", tcell.ColorGreen).
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AppendTString(removedList[len(removedList)-1])
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}
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return
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}
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func ParseStateEvent(evt *muksevt.Event, displayname string) *UIMessage {
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text := tstring.NewColorTString(displayname, widget.GetHashColor(evt.Sender)).Append(" ")
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switch content := evt.Content.Parsed.(type) {
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case *event.TopicEventContent:
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if len(content.Topic) == 0 {
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text = text.AppendColor("removed the topic.", tcell.ColorGreen)
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} else {
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text = text.AppendColor("changed the topic to ", tcell.ColorGreen).
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AppendStyle(content.Topic, tcell.StyleDefault.Underline(true)).
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AppendColor(".", tcell.ColorGreen)
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}
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case *event.RoomNameEventContent:
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if len(content.Name) == 0 {
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text = text.AppendColor("removed the room name.", tcell.ColorGreen)
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} else {
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text = text.AppendColor("changed the room name to ", tcell.ColorGreen).
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AppendStyle(content.Name, tcell.StyleDefault.Underline(true)).
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AppendColor(".", tcell.ColorGreen)
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}
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case *event.CanonicalAliasEventContent:
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prevContent := &event.CanonicalAliasEventContent{}
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if evt.Unsigned.PrevContent != nil {
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_ = evt.Unsigned.PrevContent.ParseRaw(evt.Type)
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prevContent = evt.Unsigned.PrevContent.AsCanonicalAlias()
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}
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debug.Printf("%+v -> %+v", prevContent, content)
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if len(content.Alias) == 0 && len(prevContent.Alias) != 0 {
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text = text.AppendColor("removed the main address of the room", tcell.ColorGreen)
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} else if content.Alias != prevContent.Alias {
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text = text.
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AppendColor("changed the main address of the room to ", tcell.ColorGreen).
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AppendStyle(string(content.Alias), tcell.StyleDefault.Underline(true))
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} else {
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added, removed := findAltAliasDifference(content.AltAliases, prevContent.AltAliases)
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if len(added) > 0 {
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if len(removed) > 0 {
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text = text.
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AppendTString(added).
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AppendColor(" and ", tcell.ColorGreen).
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AppendTString(removed)
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} else {
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text = text.AppendTString(added)
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}
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} else if len(removed) > 0 {
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text = text.AppendTString(removed)
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} else {
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text = text.AppendColor("changed nothing", tcell.ColorGreen)
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}
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text = text.AppendColor(" for this room", tcell.ColorGreen)
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}
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}
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return NewExpandedTextMessage(evt, displayname, text)
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}
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func ParseMessage(matrix ifc.MatrixContainer, room *rooms.Room, evt *muksevt.Event, displayname string) *UIMessage {
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content := evt.Content.AsMessage()
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if len(content.GetReplyTo()) > 0 {
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content.RemoveReplyFallback()
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}
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if len(evt.Gomuks.Edits) > 0 {
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newContent := evt.Gomuks.Edits[len(evt.Gomuks.Edits)-1].Content.AsMessage().NewContent
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if newContent != nil {
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content = newContent
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}
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}
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switch content.MsgType {
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case event.MsgText, event.MsgNotice, event.MsgEmote:
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if content.Format == event.FormatHTML {
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return NewHTMLMessage(evt, displayname, html.Parse(matrix.Preferences(), room, content, evt, displayname))
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}
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content.Body = strings.Replace(content.Body, "\t", " ", -1)
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return NewHTMLMessage(evt, displayname, html.TextToEntity(content.Body, evt.ID, matrix.Preferences().EnableInlineURLs()))
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case event.MsgImage, event.MsgVideo, event.MsgAudio, event.MsgFile:
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msg := NewFileMessage(matrix, evt, displayname)
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if !matrix.Preferences().DisableDownloads {
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renderer := msg.Renderer.(*FileMessage)
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renderer.DownloadPreview()
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}
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return msg
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}
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return nil
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}
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func getMembershipChangeMessage(evt *muksevt.Event, content *event.MemberEventContent, prevMembership event.Membership, senderDisplayname, displayname, prevDisplayname string) (sender string, text tstring.TString) {
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switch content.Membership {
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case "invite":
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sender = "---"
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text = tstring.NewColorTString(fmt.Sprintf("%s invited %s.", senderDisplayname, displayname), tcell.ColorGreen)
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text.Colorize(0, len(senderDisplayname), widget.GetHashColor(evt.Sender))
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text.Colorize(len(senderDisplayname)+len(" invited "), len(displayname), widget.GetHashColor(evt.StateKey))
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case "join":
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sender = "-->"
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if prevMembership == event.MembershipInvite {
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text = tstring.NewColorTString(fmt.Sprintf("%s accepted the invite.", displayname), tcell.ColorGreen)
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} else {
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text = tstring.NewColorTString(fmt.Sprintf("%s joined the room.", displayname), tcell.ColorGreen)
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}
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text.Colorize(0, len(displayname), widget.GetHashColor(evt.StateKey))
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case "leave":
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sender = "<--"
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if evt.Sender != id.UserID(*evt.StateKey) {
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if prevMembership == event.MembershipBan {
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text = tstring.NewColorTString(fmt.Sprintf("%s unbanned %s", senderDisplayname, displayname), tcell.ColorGreen)
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text.Colorize(len(senderDisplayname)+len(" unbanned "), len(displayname), widget.GetHashColor(evt.StateKey))
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} else {
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text = tstring.NewColorTString(fmt.Sprintf("%s kicked %s: %s", senderDisplayname, displayname, content.Reason), tcell.ColorRed)
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text.Colorize(len(senderDisplayname)+len(" kicked "), len(displayname), widget.GetHashColor(evt.StateKey))
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}
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text.Colorize(0, len(senderDisplayname), widget.GetHashColor(evt.Sender))
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} else {
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if displayname == *evt.StateKey {
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displayname = prevDisplayname
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}
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if prevMembership == event.MembershipInvite {
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text = tstring.NewColorTString(fmt.Sprintf("%s rejected the invite.", displayname), tcell.ColorRed)
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} else {
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text = tstring.NewColorTString(fmt.Sprintf("%s left the room.", displayname), tcell.ColorRed)
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}
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text.Colorize(0, len(displayname), widget.GetHashColor(evt.StateKey))
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}
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case "ban":
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text = tstring.NewColorTString(fmt.Sprintf("%s banned %s: %s", senderDisplayname, displayname, content.Reason), tcell.ColorRed)
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text.Colorize(len(senderDisplayname)+len(" banned "), len(displayname), widget.GetHashColor(evt.StateKey))
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text.Colorize(0, len(senderDisplayname), widget.GetHashColor(evt.Sender))
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}
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return
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}
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func getMembershipEventContent(room *rooms.Room, evt *muksevt.Event) (sender string, text tstring.TString) {
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member := room.GetMember(evt.Sender)
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senderDisplayname := string(evt.Sender)
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if member != nil {
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senderDisplayname = member.Displayname
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}
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content := evt.Content.AsMember()
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displayname := content.Displayname
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if len(displayname) == 0 {
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displayname = *evt.StateKey
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}
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prevMembership := event.MembershipLeave
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prevDisplayname := *evt.StateKey
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if evt.Unsigned.PrevContent != nil {
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_ = evt.Unsigned.PrevContent.ParseRaw(evt.Type)
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prevContent := evt.Unsigned.PrevContent.AsMember()
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prevMembership = prevContent.Membership
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prevDisplayname = prevContent.Displayname
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if len(prevDisplayname) == 0 {
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prevDisplayname = *evt.StateKey
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}
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}
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if content.Membership != prevMembership {
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sender, text = getMembershipChangeMessage(evt, content, prevMembership, senderDisplayname, displayname, prevDisplayname)
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} else if displayname != prevDisplayname {
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sender = "---"
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color := widget.GetHashColor(evt.StateKey)
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text = tstring.NewBlankTString().
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AppendColor(prevDisplayname, color).
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AppendColor(" changed their display name to ", tcell.ColorGreen).
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AppendColor(displayname, color).
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AppendColor(".", tcell.ColorGreen)
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}
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return
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}
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func ParseMembershipEvent(room *rooms.Room, evt *muksevt.Event) *UIMessage {
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displayname, text := getMembershipEventContent(room, evt)
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if len(text) == 0 {
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return nil
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}
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return NewExpandedTextMessage(evt, displayname, text)
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}
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