package main

import (
	"encoding/json"
	"fmt"
	"io"
	"log"
	"net/http"
	"strings"
)

var apiToken = "421791796:AAE4wPbcqfLP1GNeGR3RTBiyX16fCj3HPAM"

func main() {
	fmt.Println("vim-go")
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusNotFound)
	})
	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 {
			go sendButton(update.Message.Chat.ID, update.Message.ID, update.Message.Text)
			go DeleteMessage(update.Message.Chat.ID, update.Message.ID)
		} else if update.CallbackQuery != nil {
			go markButtonChecked(update.CallbackQuery.Message.Chat.ID, update.CallbackQuery.Message.ID, update.CallbackQuery.Data)
			go answerCallbackQuery(update.CallbackQuery.ID)
		}
	})
	port := 28923
	log.Panic(http.ListenAndServe(fmt.Sprintf(":%v", port), nil))
}

func markButtonChecked(chatID int, messageID int, text string) {
	url := fmt.Sprintf("https://api.telegram.org/bot%s/editMessageText", apiToken)
	text = fmt.Sprintf("✓ %s", text)
	sendMsgFmt := `
				{
				  "chat_id": "%d",
				  "message_id": "%d",
				  "text": "ok",
				  "reply_markup": {
					"inline_keyboard": [
					  [
						{
						  "text": "%s",
						  "callback_data": "%s"
						}
					  ]
					]
				  }
				}
			`
	sendMsgReq := fmt.Sprintf(sendMsgFmt, chatID, messageID, text, text)
	resp, err := http.Post(url, "application/json", strings.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 sendButton(chatID int, messageID int, text string) {
	url := fmt.Sprintf("https://api.telegram.org/bot%s/sendMessage", apiToken)
	sendMsgFmt := `
			{
			  "chat_id": "%d",
			  "text": "ok",
			  "reply_markup": {
				"inline_keyboard": [
				  [
					{
					  "text": "%s",
					  "callback_data": "%s"
					}
				  ]
				]
			  }
			}
			`
	sendMsgReq := fmt.Sprintf(sendMsgFmt, chatID, text, text)
	resp, err := http.Post(url, "application/json", strings.NewReader(sendMsgReq))
	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))
}

/*
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"
*/