package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"log"
	"net/http"
	"sync"
	"time"

	"gitea.balki.me/telegram-msgchkbox/glist"
)

var apiToken = "421791796:AAE4wPbcqfLP1GNeGR3RTBiyX16fCj3HPAM"

func main() {
	var chats sync.Map
	fmt.Println("vim-go")
	http.HandleFunc("/zeexkfcsdjpmncirkyelwzotjmmefcqtcogrfwnafidionxiacwnslwuhbwfuppjgwzbmazd", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("ok"))
		body, err := io.ReadAll(r.Body)
		if err != nil {
			log.Println(err)
			return
		}
		log.Println(string(body))
		update := struct {
			Message *struct {
				ID   int `json:"message_id"`
				Chat struct {
					ID int `json:"id"`
				}
				Text string
			}
			CallbackQuery *struct {
				ID      string `json:"id"`
				Message struct {
					ID   int `json:"message_id"`
					Chat struct {
						ID int `json:"id"`
					}
				}
				Data string
			} `json:"callback_query"`
		}{}
		err = json.Unmarshal(body, &update)
		if err != nil {
			log.Println(err)
			return
		}

		if update.Message != nil {

			chatID := update.Message.Chat.ID
			g, _ := chats.LoadOrStore(chatID, glist.NewGList(chatID))
			gl := g.(*glist.GList)
			go handleTextAdded(gl, update.Message.Text)
		} else if update.CallbackQuery != nil {
			defer func() { go answerCallbackQuery(update.CallbackQuery.ID) }()

			chatID := update.CallbackQuery.Message.Chat.ID
			g, ok := chats.Load(chatID)
			if !ok {
				log.Println("Chat not found: %s", chatID)
				return
			}
			gl := g.(*glist.GList)
			go handleButtonClick(gl, update.CallbackQuery.Message.ID, update.CallbackQuery.Data)

		}
	})
	port := 28923
	log.Panic(http.ListenAndServe(fmt.Sprintf(":%v", port), nil))
}

func handleTextAdded(gl *glist.GList, text string) {
	gl.Mutex.Lock()
	defer gl.Mutex.Unlock()
	gl.Add(text)
	count := gl.AllMsgCounter + 1
	gl.AllMsgCounter = count
	time.AfterFunc(30*time.Second, func() {
		gl.Mutex.Lock()
		defer gl.Mutex.Unlock()
		if count == gl.AllMsgCounter {
			sendList(gl, "sendMessage")
		}
	})
}

func handleButtonClick(gl *glist.GList, messageID int, text string) {
	gl.Mutex.Lock()
	defer gl.Mutex.Unlock()
	if gl.MessageID != nil {
		if messageID != *gl.MessageID {
			go deleteMessage(gl.ChatID, *gl.MessageID)
		}
	}
	gl.MessageID = &messageID
	if text == "clear" {
		gl.ClearChecked()

	} else {
		gl.Toggle(text)
	}

	if len(gl.Items) == 0 {
		deleteMessage(gl.ChatID, messageID)
	} else {
		sendList(gl, "editMessageText")
	}
}

func sendList(gl *glist.GList, method string) {
	url := fmt.Sprintf("https://api.telegram.org/bot%s/%s", apiToken, method)
	sendMsgReq, err := gl.GenSendListReq()
	if err != nil {
		log.Println(err)
		return
	}
	resp, err := http.Post(url, "application/json", bytes.NewReader(sendMsgReq))
	if err != nil {
		log.Println(err)
		return
	}
	logBody(resp.Body)
}

func answerCallbackQuery(callbackQueryID string) {
	answerUrl := fmt.Sprintf("https://api.telegram.org/bot%s/answerCallbackQuery?callback_query_id=%stext=ok", apiToken, callbackQueryID)
	resp, err := http.Get(answerUrl)
	if err != nil {
		log.Println(err)
		return
	}
	logBody(resp.Body)
}

func deleteMessage(chatID int, messageID int) {
	deleteUrl := fmt.Sprintf("https://api.telegram.org/bot%s/deleteMessage?chat_id=%d&message_id=%d", apiToken, chatID, messageID)
	resp, err := http.Get(deleteUrl)
	if err != nil {
		log.Println(err)
		return
	}
	logBody(resp.Body)
}

func logBody(respBody io.ReadCloser) {
	defer func() {
		err := respBody.Close()
		if err != nil {
			log.Println(err)
		}
	}()
	body, err := io.ReadAll(respBody)
	if err != nil {
		log.Println(err)
		return
	}
	log.Println(string(body))
}

/* Example data
update_id: 547400623
message:
  message_id: 869
  from:
    id: 385713421
    is_bot: false
    first_name: Balakrishnan
    language_code: en
  chat:
    id: -832015899
    title: Playbot
    type: group
    all_members_are_administrators: true
  date: 1671850862
  text: Hi
update_id: 547400624
callback_query:
  id: "1656626530601531051"
  from:
    id: 385713421
    is_bot: false
    first_name: Balakrishnan
    language_code: en
  message:
    message_id: 868
    from:
      id: 421791796
      is_bot: true
      first_name: grocery_guy
      username: grocery_guy_bot
    chat:
      id: -832015899
      title: Playbot
      type: group
      all_members_are_administrators: true
    date: 1671074930
    text: foo
    reply_markup:
      inline_keyboard:
        - - text: blah
            callback_data: "42"
  chat_instance: "5165047605234327446"
  data: "42"
*/