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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2018 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package parser
import (
"fmt"
"strings"
"time"
"maunium.net/go/gomatrix"
"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/tcell"
)
func ParseEvent(matrix ifc.MatrixContainer, room *rooms.Room, evt *gomatrix.Event) messages.UIMessage {
switch evt.Type {
case "m.room.message":
return ParseMessage(matrix, room, evt)
case "m.room.member":
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 ParseMessage(matrix ifc.MatrixContainer, room *rooms.Room, evt *gomatrix.Event) messages.UIMessage {
displayname := evt.Sender
member := room.GetMember(evt.Sender)
if member != nil {
displayname = member.DisplayName
}
msgtype, _ := evt.Content["msgtype"].(string)
text, _ := evt.Content["body"].(string)
ts := unixToTime(evt.Timestamp)
switch msgtype {
case "m.text", "m.notice", "m.emote":
format, hasFormat := evt.Content["format"].(string)
if hasFormat && format == "org.matrix.custom.html" {
text := ParseHTMLMessage(room, evt, displayname)
return messages.NewExpandedTextMessage(evt.ID, evt.Sender, displayname, msgtype, text, ts)
}
text = strings.Replace(text, "\t", " ", -1)
return messages.NewTextMessage(evt.ID, evt.Sender, displayname, msgtype, text, ts)
case "m.image":
url, _ := evt.Content["url"].(string)
data, hs, id, err := matrix.Download(url)
if err != nil {
debug.Printf("Failed to download %s: %v", url, err)
}
return messages.NewImageMessage(matrix, evt.ID, evt.Sender, displayname, msgtype, text, hs, id, data, ts)
}
return nil
}
func getMembershipChangeMessage(evt *gomatrix.Event, membership, prevMembership, 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 == "ban" {
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 {
reason, _ := evt.Content["reason"].(string)
text = tstring.NewColorTString(fmt.Sprintf("%s kicked %s: %s", senderDisplayname, displayname, 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":
reason, _ := evt.Content["reason"].(string)
text = tstring.NewColorTString(fmt.Sprintf("%s banned %s: %s", senderDisplayname, displayname, 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 *gomatrix.Event) (sender string, text tstring.TString) {
member := room.GetMember(evt.Sender)
senderDisplayname := evt.Sender
if member != nil {
senderDisplayname = member.DisplayName
}
membership, _ := evt.Content["membership"].(string)
displayname, _ := evt.Content["displayname"].(string)
if len(displayname) == 0 {
displayname = *evt.StateKey
}
prevMembership := "leave"
prevDisplayname := *evt.StateKey
if evt.Unsigned.PrevContent != nil {
prevMembership, _ = evt.Unsigned.PrevContent["membership"].(string)
prevDisplayname, _ = evt.Unsigned.PrevContent["displayname"].(string)
if len(prevDisplayname) == 0 {
prevDisplayname = *evt.StateKey
}
}
if membership != prevMembership {
sender, text = getMembershipChangeMessage(evt, membership, prevMembership, senderDisplayname, displayname, prevDisplayname)
} else if displayname != prevDisplayname {
sender = "---"
text = tstring.NewColorTString(fmt.Sprintf("%s changed their display name to %s.", prevDisplayname, displayname), tcell.ColorGreen)
color := widget.GetHashColor(*evt.StateKey)
text.Colorize(0, len(prevDisplayname), color)
text.Colorize(len(prevDisplayname) + len(" changed their display name to "), len(displayname), color)
}
return
}
func ParseMembershipEvent(room *rooms.Room, evt *gomatrix.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)
}
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