1 files changed, 120 insertions, 0 deletions
diff --git a/ui/messages/parser.go b/ui/messages/parser.go
new file mode 100644
index 0000000..4300c86
--- /dev/null
+++ b/ui/messages/parser.go
@@ -0,0 +1,120 @@
+// 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 messages
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/gdamore/tcell"
+	"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/widget"
+)
+
+func ParseEvent(mx ifc.MatrixContainer, room *rooms.Room, evt *gomatrix.Event) UIMessage {
+	member := room.GetMember(evt.Sender)
+	if member != nil {
+		evt.Sender = member.DisplayName
+	}
+	switch evt.Type {
+	case "m.room.message":
+		return ParseMessage(mx, evt)
+	case "m.room.member":
+		return ParseMembershipEvent(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(mx ifc.MatrixContainer, evt *gomatrix.Event) UIMessage {
+	msgtype, _ := evt.Content["msgtype"].(string)
+	ts := unixToTime(evt.Timestamp)
+	switch msgtype {
+	case "m.text", "m.notice":
+		text, _ := evt.Content["body"].(string)
+		return NewTextMessage(evt.ID, evt.Sender, msgtype, text, ts)
+	case "m.image":
+		url, _ := evt.Content["url"].(string)
+		data, err := mx.Download(url)
+		if err != nil {
+			debug.Printf("Failed to download %s: %v", url, err)
+		}
+		return NewImageMessage(evt.ID, evt.Sender, msgtype, data, ts)
+	}
+	return nil
+}
+
+func getMembershipEventContent(evt *gomatrix.Event) (sender string, text UIString) {
+	membership, _ := evt.Content["membership"].(string)
+	displayname, _ := evt.Content["displayname"].(string)
+	if len(displayname) == 0 {
+		displayname = *evt.StateKey
+	}
+	prevMembership := "leave"
+	prevDisplayname := ""
+	if evt.Unsigned.PrevContent != nil {
+		prevMembership, _ = evt.Unsigned.PrevContent["membership"].(string)
+		prevDisplayname, _ = evt.Unsigned.PrevContent["displayname"].(string)
+	}
+
+	if membership != prevMembership {
+		switch membership {
+		case "invite":
+			sender = "---"
+			text = NewColorUIString(fmt.Sprintf("%s invited %s.", evt.Sender, displayname), tcell.ColorYellow)
+			text.Colorize(0, len(evt.Sender), widget.GetHashColor(evt.Sender))
+			text.Colorize(len(evt.Sender)+len(" invited "), len(displayname), widget.GetHashColor(displayname))
+		case "join":
+			sender = "-->"
+			text = NewColorUIString(fmt.Sprintf("%s joined the room.", displayname), tcell.ColorGreen)
+			text.Colorize(0, len(displayname), widget.GetHashColor(displayname))
+		case "leave":
+			sender = "<--"
+			if evt.Sender != *evt.StateKey {
+				reason, _ := evt.Content["reason"].(string)
+				text = NewColorUIString(fmt.Sprintf("%s kicked %s: %s", evt.Sender, displayname, reason), tcell.ColorRed)
+				text.Colorize(0, len(evt.Sender), widget.GetHashColor(evt.Sender))
+				text.Colorize(len(evt.Sender)+len(" kicked "), len(displayname), widget.GetHashColor(displayname))
+			} else {
+				text = NewColorUIString(fmt.Sprintf("%s left the room.", displayname), tcell.ColorRed)
+				text.Colorize(0, len(displayname), widget.GetHashColor(displayname))
+			}
+		}
+	} else if displayname != prevDisplayname {
+		sender = "---"
+		text = NewColorUIString(fmt.Sprintf("%s changed their display name to %s.", prevDisplayname, displayname), tcell.ColorYellow)
+		text.Colorize(0, len(prevDisplayname), widget.GetHashColor(prevDisplayname))
+		text.Colorize(len(prevDisplayname)+len(" changed their display name to "), len(displayname), widget.GetHashColor(displayname))
+	}
+	return
+}
+
+func ParseMembershipEvent(evt *gomatrix.Event) UIMessage {
+	sender, text := getMembershipEventContent(evt)
+	ts := unixToTime(evt.Timestamp)
+	return NewExpandedTextMessage(evt.ID, sender, "m.room.membership", text, ts)
+}