package views

import (
	"fmt"
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/dialog"
	"fyne.io/fyne/v2/widget"
	"time"
	"work_cation/cfg"
	"work_cation/global"
	"work_cation/models"
	"work_cation/repo"
	"work_cation/service"
)

type ChatView struct {
	usersChat map[string]*ChatUserInfo
}

type ChatUserInfo struct {
	models.Users
	messages []models.ChatMessage
	shows    *fyne.Container
	scroll   *container.Scroll
}

var chat = &ChatView{usersChat: make(map[string]*ChatUserInfo)}

func ListenChat() {
	go func() {
		for {
			message := <-global.Send.SendChan
			userInfo := chat.usersChat[message.User.ID]
			if userInfo == nil {
				userInfo = &ChatUserInfo{}
				chat.usersChat[message.User.ID] = userInfo
			}
			userInfo.messages = append(userInfo.messages, message.ChatMessage)
			userInfo.Users = message.User.Users
			if userInfo.shows == nil {
				OpenChat(message.User.Users)
			} else {
				userInfo.shows.Add(itemMessage(message.ChatMessage))
				userInfo.scroll.ScrollToBottom()
			}
		}
	}()
}

func OpenChat(user models.Users) {
	userInfo := chat.usersChat[user.ID]
	if userInfo == nil {
		userInfo = &ChatUserInfo{}
		chat.usersChat[user.ID] = userInfo
	}
	if userInfo.shows == nil {
		w := fyne.CurrentApp().NewWindow(user.Name)
		w.CenterOnScreen()
		w.Resize(fyne.NewSize(500, 300))
		list := container.NewVBox()
		for _, item := range userInfo.messages {
			list.Add(itemMessage(item))
		}
		scroll := container.NewScroll(list)
		userInfo.scroll = scroll
		scroll.ScrollToBottom()
		// 发送表单
		en := widget.NewEntry()
		formBase := &widget.Form{
			SubmitText: "发送",
			OnSubmit: func() {
				if en.Text == "" {
					return
				}
				online := service.Zeroconf.GetOnline(user.ID)
				if online == nil {
					online = &models.Online{ID: user.ID, Ip: user.Ip, Port: cfg.T.ServerAddr}
				}
				msg, err := service.Client.Chat(online, en.Text)
				if err != nil || msg != "ok" {
					dialog.ShowInformation("发送失败", err.Error(), w)
					return
				}
				chatItem := models.ChatMessage{
					User: *repo.User.GetUserInfo(global.DB),
					Time: time.Now(),
					Text: en.Text,
				}
				userInfo.messages = append(userInfo.messages, chatItem)
				list.Add(itemMessage(chatItem))
				en.SetText("")
				scroll.ScrollToBottom()
			}}

		formBase.AppendItem(&widget.FormItem{Text: "", Widget: en})
		w.SetContent(container.NewBorder(nil, formBase, nil, nil, scroll))
		userInfo.shows = list
		w.SetOnClosed(func() {
			userInfo.shows = nil
			userInfo.scroll = nil
		})
		w.Show()
	}
	userInfo.scroll.ScrollToBottom()
}

func itemMessage(msg models.ChatMessage) fyne.CanvasObject {
	my := repo.User.GetUserInfo(global.DB)
	var card *widget.Card
	if msg.User.ID != my.ID {
		card = widget.NewCard("",
			fmt.Sprintf("%s  %s", msg.Time.Format(time.DateTime),
				msg.User.Name), widget.NewLabel(msg.Text))
	} else {

		title := fmt.Sprintf("%s  %s", msg.Time.Format(time.DateTime), "我")
		card = widget.NewCard("", "",
			container.NewVBox(
				widget.NewLabelWithStyle(title, fyne.TextAlignTrailing, fyne.TextStyle{}),
				widget.NewLabelWithStyle(msg.Text, fyne.TextAlignTrailing, fyne.TextStyle{})))

	}
	return card
}