package client

import (
	"bytes"
	_ "embed"
	"fmt"
	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
	"go.uber.org/zap"
	"penahub.gitlab.yandexcloud.net/backend/verification/internal/models"
	"text/template"
)

//go:embed assets/new_verification.txt
var NewVerification string

//go:embed assets/updated_verification.txt
var UpdatedVerification string

type Deps struct {
	Logger     *zap.Logger
	Bot        *tgbotapi.BotAPI
	ChatID     int64
	StagingURL string
}

type Telegram struct {
	logger     *zap.Logger
	bot        *tgbotapi.BotAPI
	chatID     int64
	stagingURL string
}

func NewTelegram(deps Deps) *Telegram {
	return &Telegram{logger: deps.Logger, bot: deps.Bot, chatID: deps.ChatID, stagingURL: deps.StagingURL}
}

func (t *Telegram) SendVerification(data *models.Verification, url string, isUpdate bool) error {
	var tplPath string
	if isUpdate {
		tplPath = UpdatedVerification
	} else {
		tplPath = NewVerification
	}

	var userURL string
	if url == t.stagingURL {
		userURL = fmt.Sprintf("https://sadmin.pena/users/%s", data.UserID)
	} else {
		userURL = fmt.Sprintf("https://admin.pena/users/%s", data.UserID)
	}

	tpl, err := template.New("verification_template").Parse(tplPath)
	if err != nil {
		return fmt.Errorf("error parsing template: %w", err)
	}

	var text bytes.Buffer

	toTG := models.ToTelegram{
		ID:        data.ID,
		UserID:    data.UserID,
		UserURL:   userURL,
		Accepted:  data.Accepted,
		Status:    data.Status,
		UpdatedAt: data.UpdatedAt,
		Comment:   data.Comment,
		Files:     data.Files,
		TaxNumber: data.TaxNumber,
	}

	err = tpl.Execute(&text, toTG)
	if err != nil {
		return fmt.Errorf("error executing template: %w", err)
	}

	msg := tgbotapi.NewMessage(t.chatID, text.String())

	_, err = t.bot.Send(msg)
	if err != nil {
		return fmt.Errorf("error sending message: %w", err)
	}

	return nil
}