// 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 . 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() roomID := evt.Content.RelatesTo.InReplyTo.RoomID if len(roomID) == 0 { roomID = room.ID } replyToEvt, _ := matrix.GetEvent(room, evt.Content.GetReplyTo()) if replyToEvt != nil { 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 %[1]s
%[2]s


%[3]s", replyToEvt.Sender, replyToEvt.Content.FormattedBody, evt.Content.FormattedBody) } else { evt.Content.FormattedBody = fmt.Sprintf( "In reply to unknown event https://matrix.to/#/%[1]s/%[2]s
%[3]s", roomID, evt.Content.GetReplyTo(), evt.Content.FormattedBody) } } ts := unixToTime(evt.Timestamp) switch evt.Content.MsgType { case "m.text", "m.notice", "m.emote": if evt.Content.Format == mautrix.FormatHTML { return messages.NewHTMLMessage(evt.ID, evt.Sender, displayname, evt.Content.MsgType, ParseHTMLMessage(room, evt, displayname), 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 }