// 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 messages

import (
	"fmt"
	"strings"

	"maunium.net/go/mautrix"
	"maunium.net/go/mauview"
	"maunium.net/go/tcell"

	"maunium.net/go/gomuks/config"
	"maunium.net/go/gomuks/ui/messages/html"
)

type HTMLMessage struct {
	BaseMessage

	Root      html.Entity
	FocusedBg tcell.Color
	focused   bool
}

func NewHTMLMessage(event *mautrix.Event, displayname string, root html.Entity) UIMessage {
	return &HTMLMessage{
		BaseMessage: newBaseMessage(event, displayname),
		Root:        root,
	}
}

func (hw *HTMLMessage) Clone() UIMessage {
	return &HTMLMessage{
		BaseMessage: hw.BaseMessage.clone(),
		Root:        hw.Root.Clone(),
		FocusedBg:   hw.FocusedBg,
	}
}

func (hw *HTMLMessage) Draw(screen mauview.Screen) {
	screen = hw.DrawReply(screen)
	if hw.focused {
		screen.SetStyle(tcell.StyleDefault.Background(hw.FocusedBg))
	}
	screen.Clear()
	hw.Root.Draw(screen)
}

func (hw *HTMLMessage) Focus() {
	hw.focused = true
}

func (hw *HTMLMessage) Blur() {
	hw.focused = false
}

func (hw *HTMLMessage) OnKeyEvent(event mauview.KeyEvent) bool {
	return false
}

func (hw *HTMLMessage) OnMouseEvent(event mauview.MouseEvent) bool {
	return false
}

func (hw *HTMLMessage) OnPasteEvent(event mauview.PasteEvent) bool {
	return false
}

func (hw *HTMLMessage) CalculateBuffer(preferences config.UserPreferences, width int) {
	if width < 2 {
		return
	}
	hw.CalculateReplyBuffer(preferences, width)
	// TODO account for bare messages in initial startX
	startX := 0
	hw.Root.CalculateBuffer(width, startX, preferences.BareMessageView)
}

func (hw *HTMLMessage) Height() int {
	return hw.ReplyHeight() + hw.Root.Height()
}

func (hw *HTMLMessage) PlainText() string {
	return hw.Root.PlainText()
}

func (hw *HTMLMessage) NotificationContent() string {
	return hw.Root.PlainText()
}

func (hw *HTMLMessage) String() string {
	return fmt.Sprintf("&messages.HTMLMessage{\n" +
		"    Base=%s,\n" +
		"    Root=||\n%s\n" +
		"}", strings.Replace(hw.BaseMessage.String(), "\n", "\n    ", -1), hw.Root.String())
}